Santiago weather by month

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

Temperature in Santiago (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
28°C maximum daytime temperature in January in Santiago28
29°C maximum daytime temperature in February in Santiago29
30°C maximum daytime temperature in March in Santiago30
31°C maximum daytime temperature in April in Santiago31
31°C maximum daytime temperature in May in Santiago31
33°C maximum daytime temperature in June in Santiago33
33°C maximum daytime temperature in July in Santiago33
33°C maximum daytime temperature in August in Santiago33
33°C maximum daytime temperature in September in Santiago33
32°C maximum daytime temperature in October in Santiago32
30°C maximum daytime temperature in November in Santiago30
28°C maximum daytime temperature in December in Santiago28
Min temperature (night-time)
18°C minimum night-time temperature in January in Santiago18
18°C minimum night-time temperature in February in Santiago18
18°C minimum night-time temperature in March in Santiago18
19°C minimum night-time temperature in April in Santiago19
21°C minimum night-time temperature in May in Santiago21
21°C minimum night-time temperature in June in Santiago21
21°C minimum night-time temperature in July in Santiago21
21°C minimum night-time temperature in August in Santiago21
21°C minimum night-time temperature in September in Santiago21
21°C minimum night-time temperature in October in Santiago21
19°C minimum night-time temperature in November in Santiago19
18°C minimum night-time temperature in December in Santiago18
Heat & Humidity
Moderate heat & humidity in January in SantiagoM
Moderate heat & humidity in February in SantiagoM
High heat & humidity in March in SantiagoH
High heat & humidity in April in SantiagoH
High heat & humidity in May in SantiagoH
Very high heat & humidity in June in SantiagoVH
Very high heat & humidity in July in SantiagoVH
Very high heat & humidity in August in SantiagoVH
Very high heat & humidity in September in SantiagoVH
Very high heat & humidity in October in SantiagoVH
High heat & humidity in November in SantiagoH
Moderate heat & humidity in December in SantiagoM

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

Sunshine & UV index in Santiago

  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 Santiago11
12 hours of daylight per day in February in Santiago12
12 hours of daylight per day in March in Santiago12
13 hours of daylight per day in April in Santiago13
13 hours of daylight per day in May in Santiago13
13 hours of daylight per day in June in Santiago13
13 hours of daylight per day in July in Santiago13
13 hours of daylight per day in August in Santiago13
12 hours of daylight per day in September in Santiago12
12 hours of daylight per day in October in Santiago12
11 hours of daylight per day in November in Santiago11
11 hours of daylight per day in December in Santiago11
UV Index (Maximum)
UV (maximum) index 8 (Very High) in January in Santiago8
UV (maximum) index 10 (Very High) in February in Santiago10
UV (maximum) index 11+ (Extreme) in March in Santiago11
UV (maximum) index 11+ (Extreme) in April in Santiago11
UV (maximum) index 11+ (Extreme) in May in Santiago11
UV (maximum) index 11+ (Extreme) in June in Santiago11
UV (maximum) index 11+ (Extreme) in July in Santiago11
UV (maximum) index 11+ (Extreme) in August in Santiago11
UV (maximum) index 11+ (Extreme) in September in Santiago11
UV (maximum) index 10 (Very High) in October in Santiago10
UV (maximum) index 8 (Very High) in November in Santiago8
UV (maximum) index 7 (High) in December in Santiago7

Rainfall in Santiago

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
13 days with some rainfall in January in Santiago13
10 days with some rainfall in February in Santiago10
10 days with some rainfall in March in Santiago10
10 days with some rainfall in April in Santiago10
12 days with some rainfall in May in Santiago12
13 days with some rainfall in June in Santiago13
15 days with some rainfall in July in Santiago15
15 days with some rainfall in August in Santiago15
15 days with some rainfall in September in Santiago15
16 days with some rainfall in October in Santiago16
14 days with some rainfall in November in Santiago14
14 days with some rainfall in December in Santiago14
Average monthly rainfall (mm)
56 mm monthly rainfall in January in Santiago56
57 mm monthly rainfall in February in Santiago57
71 mm monthly rainfall in March in Santiago71
105 mm monthly rainfall in April in Santiago105
170 mm monthly rainfall in May in Santiago170
80 mm monthly rainfall in June in Santiago80
59 mm monthly rainfall in July in Santiago59
65 mm monthly rainfall in August in Santiago65
103 mm monthly rainfall in September in Santiago103
112 mm monthly rainfall in October in Santiago112
118 mm monthly rainfall in November in Santiago118
93 mm monthly rainfall in December in Santiago93

More about the Santiago

Santiago by month

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

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The climate guide for Dominican Republic (Santiago) 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 Santiago?

Santiago has a hot tropical climate with a winter dry season.

Santiago weather in January

Expect daytime maximum temperatures of 28°C in Santiago, Dominican Republic in January based on long-term weather averages. There are 6 hours of sunshine per day on average with 13 days with some rainfall and typically 56 mm of rainfall in the month.

  • 28°C maximum daytime temperature in January in Santiago28
    28°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in January in Santiago13
    13 days with some rainfall
  • 18°C minimum night-time temperature in January in Santiago18
    18°C min night temperature
  • 11 hours of daylight per day in January in Santiago11
    11 hours of daylight per day
  • Moderate heat & humidity in January in SantiagoM
    Moderate heat & humidity
  • 56 mm monthly rainfall in January in Santiago56
    56 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in January in Santiago8
    8 (Very High) UV index

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Santiago weather in February

Expect daytime maximum temperatures of 29°C in Santiago, Dominican Republic in February based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall and typically 57 mm of rainfall in the month.

  • 29°C maximum daytime temperature in February in Santiago29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in February in Santiago10
    10 days with some rainfall
  • 18°C minimum night-time temperature in February in Santiago18
    18°C min night temperature
  • 12 hours of daylight per day in February in Santiago12
    12 hours of daylight per day
  • Moderate heat & humidity in February in SantiagoM
    Moderate heat & humidity
  • 57 mm monthly rainfall in February in Santiago57
    57 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in February in Santiago10
    10 (Very High) UV index

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Santiago weather in March

Expect daytime maximum temperatures of 30°C in Santiago, Dominican Republic in March and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall and typically 71 mm of rainfall in the month.

  • 30°C maximum daytime temperature in March in Santiago30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in March in Santiago10
    10 days with some rainfall
  • 18°C minimum night-time temperature in March in Santiago18
    18°C min night temperature
  • 12 hours of daylight per day in March in Santiago12
    12 hours of daylight per day
  • High heat & humidity in March in SantiagoH
    High heat & humidity
  • 71 mm monthly rainfall in March in Santiago71
    71 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in March in Santiago11
    11+ (Extreme) UV index

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Santiago weather in April

Expect daytime maximum temperatures of 31°C in Santiago, Dominican Republic in April and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall and typically 105 mm of rainfall in the month.

  • 31°C maximum daytime temperature in April in Santiago31
    31°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in April in Santiago10
    10 days with some rainfall
  • 19°C minimum night-time temperature in April in Santiago19
    19°C min night temperature
  • 13 hours of daylight per day in April in Santiago13
    13 hours of daylight per day
  • High heat & humidity in April in SantiagoH
    High heat & humidity
  • 105 mm monthly rainfall in April in Santiago105
    105 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in Santiago11
    11+ (Extreme) UV index

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Santiago weather in May

Expect daytime maximum temperatures of 31°C in Santiago, Dominican Republic in May and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 170 mm of rainfall in the month.

  • 31°C maximum daytime temperature in May in Santiago31
    31°C max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in May in Santiago12
    12 days with some rainfall
  • 21°C minimum night-time temperature in May in Santiago21
    21°C min night temperature
  • 13 hours of daylight per day in May in Santiago13
    13 hours of daylight per day
  • High heat & humidity in May in SantiagoH
    High heat & humidity
  • 170 mm monthly rainfall in May in Santiago170
    170 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Santiago11
    11+ (Extreme) UV index

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Santiago weather in June

Expect daytime maximum temperatures of 33°C in Santiago, Dominican Republic in June and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 13 days with some rainfall and typically 80 mm of rainfall in the month.

  • 33°C maximum daytime temperature in June in Santiago33
    33°C max day temperature
  • 8 hours of sunshine per day
  • 13 days with some rainfall in June in Santiago13
    13 days with some rainfall
  • 21°C minimum night-time temperature in June in Santiago21
    21°C min night temperature
  • 13 hours of daylight per day in June in Santiago13
    13 hours of daylight per day
  • Very high heat & humidity in June in SantiagoVH
    Very High heat & humidity
  • 80 mm monthly rainfall in June in Santiago80
    80 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in June in Santiago11
    11+ (Extreme) UV index

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Santiago weather in July

Expect daytime maximum temperatures of 33°C in Santiago, Dominican Republic 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 15 days with some rainfall and typically 59 mm of rainfall in the month.

  • 33°C maximum daytime temperature in July in Santiago33
    33°C max day temperature
  • 8 hours of sunshine per day
  • 15 days with some rainfall in July in Santiago15
    15 days with some rainfall
  • 21°C minimum night-time temperature in July in Santiago21
    21°C min night temperature
  • 13 hours of daylight per day in July in Santiago13
    13 hours of daylight per day
  • Very high heat & humidity in July in SantiagoVH
    Very High heat & humidity
  • 59 mm monthly rainfall in July in Santiago59
    59 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in July in Santiago11
    11+ (Extreme) UV index

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Santiago weather in August

Expect daytime maximum temperatures of 33°C in Santiago, Dominican Republic 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 15 days with some rainfall and typically 65 mm of rainfall in the month.

  • 33°C maximum daytime temperature in August in Santiago33
    33°C max day temperature
  • 8 hours of sunshine per day
  • 15 days with some rainfall in August in Santiago15
    15 days with some rainfall
  • 21°C minimum night-time temperature in August in Santiago21
    21°C min night temperature
  • 13 hours of daylight per day in August in Santiago13
    13 hours of daylight per day
  • Very high heat & humidity in August in SantiagoVH
    Very High heat & humidity
  • 65 mm monthly rainfall in August in Santiago65
    65 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Santiago11
    11+ (Extreme) UV index

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Santiago weather in September

Expect daytime maximum temperatures of 33°C in Santiago, Dominican Republic 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 15 days with some rainfall and typically 103 mm of rainfall in the month.

  • 33°C maximum daytime temperature in September in Santiago33
    33°C max day temperature
  • 7 hours of sunshine per day
  • 15 days with some rainfall in September in Santiago15
    15 days with some rainfall
  • 21°C minimum night-time temperature in September in Santiago21
    21°C min night temperature
  • 12 hours of daylight per day in September in Santiago12
    12 hours of daylight per day
  • Very high heat & humidity in September in SantiagoVH
    Very High heat & humidity
  • 103 mm monthly rainfall in September in Santiago103
    103 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Santiago11
    11+ (Extreme) UV index

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Santiago weather in October

Expect daytime maximum temperatures of 32°C in Santiago, Dominican Republic in October and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 16 days with some rainfall and typically 112 mm of rainfall in the month.

  • 32°C maximum daytime temperature in October in Santiago32
    32°C max day temperature
  • 7 hours of sunshine per day
  • 16 days with some rainfall in October in Santiago16
    16 days with some rainfall
  • 21°C minimum night-time temperature in October in Santiago21
    21°C min night temperature
  • 12 hours of daylight per day in October in Santiago12
    12 hours of daylight per day
  • Very high heat & humidity in October in SantiagoVH
    Very High heat & humidity
  • 112 mm monthly rainfall in October in Santiago112
    112 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in October in Santiago10
    10 (Very High) UV index

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Santiago weather in November

Expect daytime maximum temperatures of 30°C in Santiago, Dominican Republic in November and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 14 days with some rainfall and typically 118 mm of rainfall in the month.

  • 30°C maximum daytime temperature in November in Santiago30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in November in Santiago14
    14 days with some rainfall
  • 19°C minimum night-time temperature in November in Santiago19
    19°C min night temperature
  • 11 hours of daylight per day in November in Santiago11
    11 hours of daylight per day
  • High heat & humidity in November in SantiagoH
    High heat & humidity
  • 118 mm monthly rainfall in November in Santiago118
    118 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in November in Santiago8
    8 (Very High) UV index

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Santiago weather in December

Expect daytime maximum temperatures of 28°C in Santiago, Dominican Republic in December based on long-term weather averages. There are 6 hours of sunshine per day on average with 14 days with some rainfall and typically 93 mm of rainfall in the month.

  • 28°C maximum daytime temperature in December in Santiago28
    28°C max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in December in Santiago14
    14 days with some rainfall
  • 18°C minimum night-time temperature in December in Santiago18
    18°C min night temperature
  • 11 hours of daylight per day in December in Santiago11
    11 hours of daylight per day
  • Moderate heat & humidity in December in SantiagoM
    Moderate heat & humidity
  • 93 mm monthly rainfall in December in Santiago93
    93 mm of monthly rainfall
  • UV (maximum) index 7 (High) in December in Santiago7
    7 (High) UV index

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More about the Santiago

Santiago by month

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

Recommended for the Dominican Republic

  • Explore latest special offers & online deals from TUI
  • Free child places & £0 deposits with direct debit available
  • Book summer & winter sun holidays in 2026/2027

TUITUI deal finder

The climate guide for Dominican Republic (Santiago) 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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Compare Santiago weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Santiago, Dominican Republic and the UK (London).

Maximum daytime temperature (°C)

Santiago, Dominican Republic
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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