St John's weather by month

Check out St John's weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in St John's (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
28°C maximum daytime temperature in January in St John's28
28°C maximum daytime temperature in February in St John's28
29°C maximum daytime temperature in March in St John's29
29°C maximum daytime temperature in April in St John's29
30°C maximum daytime temperature in May in St John's30
30°C maximum daytime temperature in June in St John's30
31°C maximum daytime temperature in July in St John's31
31°C maximum daytime temperature in August in St John's31
31°C maximum daytime temperature in September in St John's31
30°C maximum daytime temperature in October in St John's30
30°C maximum daytime temperature in November in St John's30
29°C maximum daytime temperature in December in St John's29
Min temperature (night-time)
22°C minimum night-time temperature in January in St John's22
22°C minimum night-time temperature in February in St John's22
22°C minimum night-time temperature in March in St John's22
23°C minimum night-time temperature in April in St John's23
24°C minimum night-time temperature in May in St John's24
25°C minimum night-time temperature in June in St John's25
25°C minimum night-time temperature in July in St John's25
25°C minimum night-time temperature in August in St John's25
25°C minimum night-time temperature in September in St John's25
24°C minimum night-time temperature in October in St John's24
23°C minimum night-time temperature in November in St John's23
23°C minimum night-time temperature in December in St John's23
Heat & Humidity
Moderate heat & humidity in January in St John'sM
Moderate heat & humidity in February in St John'sM
Moderate heat & humidity in March in St John'sM
High heat & humidity in April in St John'sH
High heat & humidity in May in St John'sH
High heat & humidity in June in St John'sH
Very high heat & humidity in July in St John'sVH
Very high heat & humidity in August in St John'sVH
Very high heat & humidity in September in St John'sVH
High heat & humidity in October in St John'sH
High heat & humidity in November in St John'sH
Moderate heat & humidity in December in St John'sM
Sea temperature
26°C sea temperature in January in St John's26
26°C sea temperature in February in St John's26
26°C sea temperature in March in St John's26
27°C sea temperature in April in St John's27
27°C sea temperature in May in St John's27
28°C sea temperature in June in St John's28
28°C sea temperature in July in St John's28
28°C sea temperature in August in St John's28
29°C sea temperature in September in St John's29
29°C sea temperature in October in St John's29
28°C sea temperature in November in St John's28
27°C sea temperature in December in St John's27

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in St John's

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
11 hours of daylight per day in January in St John's11
12 hours of daylight per day in February in St John's12
12 hours of daylight per day in March in St John's12
13 hours of daylight per day in April in St John's13
13 hours of daylight per day in May in St John's13
13 hours of daylight per day in June in St John's13
13 hours of daylight per day in July in St John's13
13 hours of daylight per day in August in St John's13
12 hours of daylight per day in September in St John's12
12 hours of daylight per day in October in St John's12
11 hours of daylight per day in November in St John's11
11 hours of daylight per day in December in St John's11
UV Index (Maximum)
UV (maximum) index 8 (Very High) in January in St John's8
UV (maximum) index 10 (Very High) in February in St John's10
UV (maximum) index 11+ (Extreme) in March in St John's11
UV (maximum) index 11+ (Extreme) in April in St John's11
UV (maximum) index 11+ (Extreme) in May in St John's11
UV (maximum) index 11+ (Extreme) in June in St John's11
UV (maximum) index 11+ (Extreme) in July in St John's11
UV (maximum) index 11+ (Extreme) in August in St John's11
UV (maximum) index 11+ (Extreme) in September in St John's11
UV (maximum) index 10 (Very High) in October in St John's10
UV (maximum) index 9 (Very High) in November in St John's9
UV (maximum) index 8 (Very High) in December in St John's8

Rainfall in St John's

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
16 days with some rainfall in January in St John's16
13 days with some rainfall in February in St John's13
12 days with some rainfall in March in St John's12
11 days with some rainfall in April in St John's11
14 days with some rainfall in May in St John's14
14 days with some rainfall in June in St John's14
16 days with some rainfall in July in St John's16
16 days with some rainfall in August in St John's16
17 days with some rainfall in September in St John's17
17 days with some rainfall in October in St John's17
17 days with some rainfall in November in St John's17
17 days with some rainfall in December in St John's17
Average monthly rainfall (mm)
67 mm monthly rainfall in January in St John's67
37 mm monthly rainfall in February in St John's37
40 mm monthly rainfall in March in St John's40
57 mm monthly rainfall in April in St John's57
91 mm monthly rainfall in May in St John's91
70 mm monthly rainfall in June in St John's70
79 mm monthly rainfall in July in St John's79
124 mm monthly rainfall in August in St John's124
140 mm monthly rainfall in September in St John's140
134 mm monthly rainfall in October in St John's134
113 mm monthly rainfall in November in St John's113
88 mm monthly rainfall in December in St John's88

More about St John's

St John's by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Antigua (St John's) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in St John's?

St John's has a hot tropical climate with a winter dry season.

St John's weather in January

Expect daytime maximum temperatures of 28°C in St John's, Antigua in January based on long-term weather averages. There are 8 hours of sunshine per day on average with 16 days with some rainfall and typically 67 mm of rainfall in the month.

  • 28°C maximum daytime temperature in January in St John's28
    28°C max day temperature
  • 8 hours of sunshine per day
  • 16 days with some rainfall in January in St John's16
    16 days with some rainfall
  • 22°C minimum night-time temperature in January in St John's22
    22°C min night temperature
  • 11 hours of daylight per day in January in St John's11
    11 hours of daylight per day
  • Moderate heat & humidity in January in St John'sM
    Moderate heat & humidity
  • 67 mm monthly rainfall in January in St John's67
    67 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in January in St John's8
    8 (Very High) UV index
  • 26°C sea temperature in January in St John's26
    26°C sea temperature

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St John's weather in February

Expect daytime maximum temperatures of 28°C in St John's, Antigua in February based on long-term weather averages. There are 8 hours of sunshine per day on average with 13 days with some rainfall.

  • 28°C maximum daytime temperature in February in St John's28
    28°C max day temperature
  • 8 hours of sunshine per day
  • 13 days with some rainfall in February in St John's13
    13 days with some rainfall
  • 22°C minimum night-time temperature in February in St John's22
    22°C min night temperature
  • 12 hours of daylight per day in February in St John's12
    12 hours of daylight per day
  • Moderate heat & humidity in February in St John'sM
    Moderate heat & humidity
  • 37 mm monthly rainfall in February in St John's37
    37 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in February in St John's10
    10 (Very High) UV index
  • 26°C sea temperature in February in St John's26
    26°C sea temperature

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St John's weather in March

Expect daytime maximum temperatures of 29°C in St John's, Antigua in March based on long-term weather averages. There are 8 hours of sunshine per day on average with 12 days with some rainfall and typically 40 mm of rainfall in the month.

  • 29°C maximum daytime temperature in March in St John's29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in March in St John's12
    12 days with some rainfall
  • 22°C minimum night-time temperature in March in St John's22
    22°C min night temperature
  • 12 hours of daylight per day in March in St John's12
    12 hours of daylight per day
  • Moderate heat & humidity in March in St John'sM
    Moderate heat & humidity
  • 40 mm monthly rainfall in March in St John's40
    40 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in March in St John's11
    11+ (Extreme) UV index
  • 26°C sea temperature in March in St John's26
    26°C sea temperature

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St John's weather in April

Expect daytime maximum temperatures of 29°C in St John's, Antigua in April and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 57 mm of rainfall in the month.

  • 29°C maximum daytime temperature in April in St John's29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in April in St John's11
    11 days with some rainfall
  • 23°C minimum night-time temperature in April in St John's23
    23°C min night temperature
  • 13 hours of daylight per day in April in St John's13
    13 hours of daylight per day
  • High heat & humidity in April in St John'sH
    High heat & humidity
  • 57 mm monthly rainfall in April in St John's57
    57 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in St John's11
    11+ (Extreme) UV index
  • 27°C sea temperature in April in St John's27
    27°C sea temperature

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St John's weather in May

Expect daytime maximum temperatures of 30°C in St John's, Antigua in May and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 14 days with some rainfall and typically 91 mm of rainfall in the month.

  • 30°C maximum daytime temperature in May in St John's30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 14 days with some rainfall in May in St John's14
    14 days with some rainfall
  • 24°C minimum night-time temperature in May in St John's24
    24°C min night temperature
  • 13 hours of daylight per day in May in St John's13
    13 hours of daylight per day
  • High heat & humidity in May in St John'sH
    High heat & humidity
  • 91 mm monthly rainfall in May in St John's91
    91 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in St John's11
    11+ (Extreme) UV index
  • 27°C sea temperature in May in St John's27
    27°C sea temperature

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St John's weather in June

Expect daytime maximum temperatures of 30°C in St John's, Antigua in June and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 14 days with some rainfall and typically 70 mm of rainfall in the month.

  • 30°C maximum daytime temperature in June in St John's30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 14 days with some rainfall in June in St John's14
    14 days with some rainfall
  • 25°C minimum night-time temperature in June in St John's25
    25°C min night temperature
  • 13 hours of daylight per day in June in St John's13
    13 hours of daylight per day
  • High heat & humidity in June in St John'sH
    High heat & humidity
  • 70 mm monthly rainfall in June in St John's70
    70 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in June in St John's11
    11+ (Extreme) UV index
  • 28°C sea temperature in June in St John's28
    28°C sea temperature

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St John's weather in July

Expect daytime maximum temperatures of 31°C in St John's, Antigua in July and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 16 days with some rainfall and typically 79 mm of rainfall in the month.

  • 31°C maximum daytime temperature in July in St John's31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 16 days with some rainfall in July in St John's16
    16 days with some rainfall
  • 25°C minimum night-time temperature in July in St John's25
    25°C min night temperature
  • 13 hours of daylight per day in July in St John's13
    13 hours of daylight per day
  • Very high heat & humidity in July in St John'sVH
    Very High heat & humidity
  • 79 mm monthly rainfall in July in St John's79
    79 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in July in St John's11
    11+ (Extreme) UV index
  • 28°C sea temperature in July in St John's28
    28°C sea temperature

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St John's weather in August

Expect daytime maximum temperatures of 31°C in St John's, Antigua in August and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 16 days with some rainfall and typically 124 mm of rainfall in the month.

  • 31°C maximum daytime temperature in August in St John's31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 16 days with some rainfall in August in St John's16
    16 days with some rainfall
  • 25°C minimum night-time temperature in August in St John's25
    25°C min night temperature
  • 13 hours of daylight per day in August in St John's13
    13 hours of daylight per day
  • Very high heat & humidity in August in St John'sVH
    Very High heat & humidity
  • 124 mm monthly rainfall in August in St John's124
    124 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in St John's11
    11+ (Extreme) UV index
  • 28°C sea temperature in August in St John's28
    28°C sea temperature

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St John's weather in September

Expect daytime maximum temperatures of 31°C in St John's, Antigua in September and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 140 mm of rainfall in the month.

  • 31°C maximum daytime temperature in September in St John's31
    31°C max day temperature
  • 7 hours of sunshine per day
  • 17 days with some rainfall in September in St John's17
    17 days with some rainfall
  • 25°C minimum night-time temperature in September in St John's25
    25°C min night temperature
  • 12 hours of daylight per day in September in St John's12
    12 hours of daylight per day
  • Very high heat & humidity in September in St John'sVH
    Very High heat & humidity
  • 140 mm monthly rainfall in September in St John's140
    140 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in St John's11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in St John's29
    29°C sea temperature

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St John's weather in October

Expect daytime maximum temperatures of 30°C in St John's, Antigua in October and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 134 mm of rainfall in the month.

  • 30°C maximum daytime temperature in October in St John's30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 17 days with some rainfall in October in St John's17
    17 days with some rainfall
  • 24°C minimum night-time temperature in October in St John's24
    24°C min night temperature
  • 12 hours of daylight per day in October in St John's12
    12 hours of daylight per day
  • High heat & humidity in October in St John'sH
    High heat & humidity
  • 134 mm monthly rainfall in October in St John's134
    134 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in October in St John's10
    10 (Very High) UV index
  • 29°C sea temperature in October in St John's29
    29°C sea temperature

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St John's weather in November

Expect daytime maximum temperatures of 30°C in St John's, Antigua in November and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 113 mm of rainfall in the month.

  • 30°C maximum daytime temperature in November in St John's30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 17 days with some rainfall in November in St John's17
    17 days with some rainfall
  • 23°C minimum night-time temperature in November in St John's23
    23°C min night temperature
  • 11 hours of daylight per day in November in St John's11
    11 hours of daylight per day
  • High heat & humidity in November in St John'sH
    High heat & humidity
  • 113 mm monthly rainfall in November in St John's113
    113 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in November in St John's9
    9 (Very High) UV index
  • 28°C sea temperature in November in St John's28
    28°C sea temperature

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St John's weather in December

Expect daytime maximum temperatures of 29°C in St John's, Antigua in December based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 88 mm of rainfall in the month.

  • 29°C maximum daytime temperature in December in St John's29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 17 days with some rainfall in December in St John's17
    17 days with some rainfall
  • 23°C minimum night-time temperature in December in St John's23
    23°C min night temperature
  • 11 hours of daylight per day in December in St John's11
    11 hours of daylight per day
  • Moderate heat & humidity in December in St John'sM
    Moderate heat & humidity
  • 88 mm monthly rainfall in December in St John's88
    88 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in December in St John's8
    8 (Very High) UV index
  • 27°C sea temperature in December in St John's27
    27°C sea temperature

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More about St John's

St John's by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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  • Save up to £300 on all inclusive holidays to the Caribbean
  • Discount varies by travel dates. 7 night minimum stay
  • Travel before 31st December 2027 (inclusive)
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Redeem Sandals discount code >>

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The climate guide for Antigua (St John's) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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Tropical storm risk: St John's, Antigua hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
<1%
2.9%
4.4%
1.5%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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Compare St John's with the UK

Below the St John's chart shows average maximum daytime temperature for St John's, Antigua and the UK (London).

Maximum daytime temperature (°C)

St John's, Antigua
UK (London)
28
7
28
7
29
10
29
13
30
17
30
20
31
22
31
22
31
19
30
15
30
10
29
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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