St Lucia weather by month

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

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum daytime temperature °F
82°F maximum daytime temperature in January in Castries82
82°F maximum daytime temperature in February in Castries82
84°F maximum daytime temperature in March in Castries84
84°F maximum daytime temperature in April in Castries84
86°F maximum daytime temperature in May in Castries86
86°F maximum daytime temperature in June in Castries86
86°F maximum daytime temperature in July in Castries86
86°F maximum daytime temperature in August in Castries86
86°F maximum daytime temperature in September in Castries86
86°F maximum daytime temperature in October in Castries86
84°F maximum daytime temperature in November in Castries84
84°F maximum daytime temperature in December in Castries84
Hours of sunshine (daily)
Days with some rainfall
17 days with some rainfall in January in Castries17
13 days with some rainfall in February in Castries13
13 days with some rainfall in March in Castries13
11 days with some rainfall in April in Castries11
15 days with some rainfall in May in Castries15
19 days with some rainfall in June in Castries19
21 days with some rainfall in July in Castries21
20 days with some rainfall in August in Castries20
25 days with some rainfall in September in Castries25
18 days with some rainfall in October in Castries18
19 days with some rainfall in November in Castries19
18 days with some rainfall in December in Castries18
Sea temperature °F
81°F sea temperature in January in Castries81
79°F sea temperature in February in Castries79
81°F sea temperature in March in Castries81
81°F sea temperature in April in Castries81
82°F sea temperature in May in Castries82
82°F sea temperature in June in Castries82
82°F sea temperature in July in Castries82
84°F sea temperature in August in Castries84
84°F sea temperature in September in Castries84
84°F sea temperature in October in Castries84
82°F sea temperature in November in Castries82
82°F sea temperature in December in Castries82

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St Lucia by month

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

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The climate guide for St Lucia (Castries) 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.

Top St Lucia destinations

Below are average maximum temperatures at popular countries, regions and places in St Lucia for next month - February. Select a destination to see the climate guide for all months of the year.

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Metric (°C)  |  Imperial (°F)

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St Lucia weather averages

Temperature in St Lucia (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
82°F maximum daytime temperature in January in St Lucia (Castries)82
82°F maximum daytime temperature in February in St Lucia (Castries)82
84°F maximum daytime temperature in March in St Lucia (Castries)84
84°F maximum daytime temperature in April in St Lucia (Castries)84
86°F maximum daytime temperature in May in St Lucia (Castries)86
86°F maximum daytime temperature in June in St Lucia (Castries)86
86°F maximum daytime temperature in July in St Lucia (Castries)86
86°F maximum daytime temperature in August in St Lucia (Castries)86
86°F maximum daytime temperature in September in St Lucia (Castries)86
86°F maximum daytime temperature in October in St Lucia (Castries)86
84°F maximum daytime temperature in November in St Lucia (Castries)84
84°F maximum daytime temperature in December in St Lucia (Castries)84
Min temperature (night-time)
72°F minimum night-time temperature in January in St Lucia (Castries)72
72°F minimum night-time temperature in February in St Lucia (Castries)72
72°F minimum night-time temperature in March in St Lucia (Castries)72
73°F minimum night-time temperature in April in St Lucia (Castries)73
75°F minimum night-time temperature in May in St Lucia (Castries)75
75°F minimum night-time temperature in June in St Lucia (Castries)75
77°F minimum night-time temperature in July in St Lucia (Castries)77
75°F minimum night-time temperature in August in St Lucia (Castries)75
75°F minimum night-time temperature in September in St Lucia (Castries)75
75°F minimum night-time temperature in October in St Lucia (Castries)75
73°F minimum night-time temperature in November in St Lucia (Castries)73
73°F minimum night-time temperature in December in St Lucia (Castries)73
Heat & Humidity
Moderate heat & humidity in January in St Lucia (Castries)M
Moderate heat & humidity in February in St Lucia (Castries)M
Moderate heat & humidity in March in St Lucia (Castries)M
High heat & humidity in April in St Lucia (Castries)H
High heat & humidity in May in St Lucia (Castries)H
High heat & humidity in June in St Lucia (Castries)H
High heat & humidity in July in St Lucia (Castries)H
Very high heat & humidity in August in St Lucia (Castries)VH
Very high heat & humidity in September in St Lucia (Castries)VH
High heat & humidity in October in St Lucia (Castries)H
High heat & humidity in November in St Lucia (Castries)H
Moderate heat & humidity in December in St Lucia (Castries)M
Sea temperature
81°F sea temperature in January in St Lucia (Castries)81
79°F sea temperature in February in St Lucia (Castries)79
81°F sea temperature in March in St Lucia (Castries)81
81°F sea temperature in April in St Lucia (Castries)81
82°F sea temperature in May in St Lucia (Castries)82
82°F sea temperature in June in St Lucia (Castries)82
82°F sea temperature in July in St Lucia (Castries)82
84°F sea temperature in August in St Lucia (Castries)84
84°F sea temperature in September in St Lucia (Castries)84
84°F sea temperature in October in St Lucia (Castries)84
82°F sea temperature in November in St Lucia (Castries)82
82°F sea temperature in December in St Lucia (Castries)82

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

Sunshine & UV index in St Lucia

  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 Lucia (Castries)11
12 hours of daylight per day in February in St Lucia (Castries)12
12 hours of daylight per day in March in St Lucia (Castries)12
12 hours of daylight per day in April in St Lucia (Castries)12
13 hours of daylight per day in May in St Lucia (Castries)13
13 hours of daylight per day in June in St Lucia (Castries)13
13 hours of daylight per day in July in St Lucia (Castries)13
13 hours of daylight per day in August in St Lucia (Castries)13
12 hours of daylight per day in September in St Lucia (Castries)12
12 hours of daylight per day in October in St Lucia (Castries)12
11 hours of daylight per day in November in St Lucia (Castries)11
11 hours of daylight per day in December in St Lucia (Castries)11
UV Index (Maximum)
UV (maximum) index 9 (Very High) in January in St Lucia (Castries)9
UV (maximum) index 11 (Extreme) in February in St Lucia (Castries)11
UV (maximum) index 11+ (Extreme) in March in St Lucia (Castries)11
UV (maximum) index 11+ (Extreme) in April in St Lucia (Castries)11
UV (maximum) index 11+ (Extreme) in May in St Lucia (Castries)11
UV (maximum) index 11+ (Extreme) in June in St Lucia (Castries)11
UV (maximum) index 11+ (Extreme) in July in St Lucia (Castries)11
UV (maximum) index 11+ (Extreme) in August in St Lucia (Castries)11
UV (maximum) index 11+ (Extreme) in September in St Lucia (Castries)11
UV (maximum) index 11 (Extreme) in October in St Lucia (Castries)11
UV (maximum) index 9 (Very High) in November in St Lucia (Castries)9
UV (maximum) index 8 (Very High) in December in St Lucia (Castries)8

Rainfall in St Lucia

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
17 days with some rainfall in January in St Lucia (Castries)17
13 days with some rainfall in February in St Lucia (Castries)13
13 days with some rainfall in March in St Lucia (Castries)13
11 days with some rainfall in April in St Lucia (Castries)11
15 days with some rainfall in May in St Lucia (Castries)15
19 days with some rainfall in June in St Lucia (Castries)19
21 days with some rainfall in July in St Lucia (Castries)21
20 days with some rainfall in August in St Lucia (Castries)20
25 days with some rainfall in September in St Lucia (Castries)25
18 days with some rainfall in October in St Lucia (Castries)18
19 days with some rainfall in November in St Lucia (Castries)19
18 days with some rainfall in December in St Lucia (Castries)18
Average monthly rainfall (inches)
4.4 inches monthly rainfall in January in St Lucia (Castries)4.4
3.4 inches monthly rainfall in February in St Lucia (Castries)3.4
3.0 inches monthly rainfall in March in St Lucia (Castries)3.0
3.8 inches monthly rainfall in April in St Lucia (Castries)3.8
4.9 inches monthly rainfall in May in St Lucia (Castries)4.9
7.2 inches monthly rainfall in June in St Lucia (Castries)7.2
9.6 inches monthly rainfall in July in St Lucia (Castries)9.6
8.5 inches monthly rainfall in August in St Lucia (Castries)8.5
8.8 inches monthly rainfall in September in St Lucia (Castries)8.8
10.6 inches monthly rainfall in October in St Lucia (Castries)10.6
10.0 inches monthly rainfall in November in St Lucia (Castries)10.0
5.9 inches monthly rainfall in December in St Lucia (Castries)5.9

Tropical storm risk: St Lucia hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
1%
2.4%
3.6%
1.8%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Compare St Lucia weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for St Lucia (Castries) and the UK (London).

Maximum daytime temperature (°F)

St Lucia (Castries)
UK (London)
82
45
82
45
84
50
84
55
86
63
86
68
86
72
86
72
86
66
86
59
84
50
84
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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