San Juan weather by month

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

Temperature in San Juan (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
29°C maximum daytime temperature in January in San Juan29
30°C maximum daytime temperature in February in San Juan30
30°C maximum daytime temperature in March in San Juan30
31°C maximum daytime temperature in April in San Juan31
31°C maximum daytime temperature in May in San Juan31
31°C maximum daytime temperature in June in San Juan31
32°C maximum daytime temperature in July in San Juan32
32°C maximum daytime temperature in August in San Juan32
32°C maximum daytime temperature in September in San Juan32
31°C maximum daytime temperature in October in San Juan31
29°C maximum daytime temperature in November in San Juan29
29°C maximum daytime temperature in December in San Juan29
Min temperature (night-time)
14°C minimum night-time temperature in January in San Juan14
15°C minimum night-time temperature in February in San Juan15
16°C minimum night-time temperature in March in San Juan16
18°C minimum night-time temperature in April in San Juan18
19°C minimum night-time temperature in May in San Juan19
19°C minimum night-time temperature in June in San Juan19
18°C minimum night-time temperature in July in San Juan18
19°C minimum night-time temperature in August in San Juan19
19°C minimum night-time temperature in September in San Juan19
18°C minimum night-time temperature in October in San Juan18
17°C minimum night-time temperature in November in San Juan17
15°C minimum night-time temperature in December in San Juan15
Heat & Humidity
Moderate heat & humidity in January in San JuanM
Moderate heat & humidity in February in San JuanM
High heat & humidity in March in San JuanH
High heat & humidity in April in San JuanH
High heat & humidity in May in San JuanH
High heat & humidity in June in San JuanH
High heat & humidity in July in San JuanH
High heat & humidity in August in San JuanH
High heat & humidity in September in San JuanH
High heat & humidity in October in San JuanH
Moderate heat & humidity in November in San JuanM
Moderate heat & humidity in December in San JuanM

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

Sunshine & Daylight in San Juan

  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 San Juan11
12 hours of daylight per day in February in San Juan12
12 hours of daylight per day in March in San Juan12
13 hours of daylight per day in April in San Juan13
13 hours of daylight per day in May in San Juan13
13 hours of daylight per day in June in San Juan13
13 hours of daylight per day in July in San Juan13
13 hours of daylight per day in August in San Juan13
12 hours of daylight per day in September in San Juan12
12 hours of daylight per day in October in San Juan12
11 hours of daylight per day in November in San Juan11
11 hours of daylight per day in December in San Juan11
UV Index (Maximum)
UV (maximum) index 8 (Very High) in January in San Juan8
UV (maximum) index 10 (Very High) in February in San Juan10
UV (maximum) index 11+ (Extreme) in March in San Juan11
UV (maximum) index 11+ (Extreme) in April in San Juan11
UV (maximum) index 11+ (Extreme) in May in San Juan11
UV (maximum) index 11+ (Extreme) in June in San Juan11
UV (maximum) index 11+ (Extreme) in July in San Juan11
UV (maximum) index 11+ (Extreme) in August in San Juan11
UV (maximum) index 11+ (Extreme) in September in San Juan11
UV (maximum) index 10 (Very High) in October in San Juan10
UV (maximum) index 9 (Very High) in November in San Juan9
UV (maximum) index 8 (Very High) in December in San Juan8

Rainfall in San Juan

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
12 days with some rainfall in January in San Juan12
10 days with some rainfall in February in San Juan10
10 days with some rainfall in March in San Juan10
10 days with some rainfall in April in San Juan10
12 days with some rainfall in May in San Juan12
12 days with some rainfall in June in San Juan12
15 days with some rainfall in July in San Juan15
15 days with some rainfall in August in San Juan15
15 days with some rainfall in September in San Juan15
16 days with some rainfall in October in San Juan16
14 days with some rainfall in November in San Juan14
13 days with some rainfall in December in San Juan13
Average monthly rainfall (mm)
20 mm monthly rainfall in January in San Juan20
24 mm monthly rainfall in February in San Juan24
36 mm monthly rainfall in March in San Juan36
107 mm monthly rainfall in April in San Juan107
189 mm monthly rainfall in May in San Juan189
109 mm monthly rainfall in June in San Juan109
111 mm monthly rainfall in July in San Juan111
135 mm monthly rainfall in August in San Juan135
155 mm monthly rainfall in September in San Juan155
158 mm monthly rainfall in October in San Juan158
72 mm monthly rainfall in November in San Juan72
44 mm monthly rainfall in December in San Juan44

More about the San Juan

San Juan by month

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

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The climate guide for Dominican Republic (San Juan) 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 San Juan?

San Juan has a hot tropical climate with a winter dry season.

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

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Tropical storm risk: San Juan hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
2%
2.7%
1.5%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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More about the Dominican Republic

Compare San Juan with the USA

Below the San Juan chart shows average maximum daytime temperature for San Juan, Dominican Republic and the USA (Washington).

Maximum daytime temperature (°C)

San Juan, Dominican Republic
USA (Washington)
29
5
30
7
30
13
31
19
31
24
31
29
32
31
32
30
32
26
31
20
29
14
29
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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