Monthly weather forecast and climate
San Juan, Dominican Republic

Weather in January

January, the same as December, is another warm winter month in San Juan, Dominican Republic, with average temperature fluctuating between 14°C (57.2°F) and 29°C (84.2°F). January, November and December, with an average high-temperature of 29°C (84.2°F), are the coldest months. The month with the least rainfall is January when the rain falls for 12 days and typically collects 20mm (0.79") of precipitation. Weather in January »

Weather in February

The last month of the winter, February, is a tropical month in San Juan, Dominican Republic, with average temperature fluctuating between 30°C (86°F) and 15°C (59°F). In San Juan, the average high-temperature in February is practically the same as in January - a tropical 30°C (86°F). Weather in February »

Weather in March

The first month of the spring, March, is still a hot month in San Juan, Dominican Republic, with average temperature varying between 30°C (86°F) and 16°C (60.8°F). In San Juan, the average high-temperature remains equal as in February - a still hot 30°C (86°F). Weather in March »

Weather in April

April, like March, is a hot spring month in San Juan, Dominican Republic, with temperature in the range of an average low of 18°C (64.4°F) and an average high of 31°C (87.8°F). In San Juan, the average high-temperature in April is almost the same as in March - a still hot 31°C (87.8°F). Weather in April »

Weather in May

May, the last month of the spring, in San Juan, is another tropical month, with average temperature fluctuating between 19°C (66.2°F) and 31°C (87.8°F). In San Juan, the average high-temperature remains equal as in April - a still tropical 31°C (87.8°F). Weather in May »

Weather in June

June, the first month of the summer, in San Juan, is still a tropical month, with average temperature varying between 31°C (87.8°F) and 19°C (66.2°F). In June, the average high-temperature remains equal as in May - a still tropical 31°C (87.8°F). Weather in June »

Weather in July

July, the same as June, in San Juan, Dominican Republic, is another hot summer month, with average temperature varying between 32°C (89.6°F) and 18°C (64.4°F). July through September, with an average high-temperature of 32°C (89.6°F), are the warmest months. Weather in July »

Weather in August

August, the last month of the summer, in San Juan, is another tropical month, with temperature in the range of an average high of 32°C (89.6°F) and an average low of 19°C (66.2°F). The warmest months are July through September, with an average high-temperature of 32°C (89.6°F). Weather in August »

Weather in September

September, the first month of the autumn, in San Juan, is still a hot month, with average temperature fluctuating between 19°C (66.2°F) and 32°C (89.6°F). The warmest months are July through September, with an average high-temperature of 32°C (89.6°F). In San Juan, during September, the rain falls for 15 days and regularly aggregates up to 155mm (6.1") of precipitation. Weather in September »

Weather in October

October, the same as September, in San Juan, Dominican Republic, is another hot autumn month, with average temperature ranging between max 31°C (87.8°F) and min 18°C (64.4°F). In San Juan, the average high-temperature is almost the same as in September - a still tropical 31°C (87.8°F). Weather in October »

Weather in November

The last month of the autumn, November, is also a moderately hot month in San Juan, Dominican Republic, with average temperature ranging between min 17°C (62.6°F) and max 29°C (84.2°F). January, November and December, with an average high-temperature of 29°C (84.2°F), are the coldest months. In San Juan, Dominican Republic, during November, the rain falls for 14 days and regularly aggregates up to 72mm (2.83") of precipitation. Weather in November »

Weather in December

December, the first month of the winter, in San Juan, is still a warm month, with average temperature varying between 29°C (84.2°F) and 15°C (59°F). The coldest months are January, November and December, with an average high-temperature of 29°C (84.2°F). In San Juan, in December, it is raining for 13 days, with typically 44mm (1.73") of accumulated precipitation. Weather in December »
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FAQ

What are the coldest months in San Juan?

The coldest months in San Juan, Dominican Republic, are January, November and December, with an average high-temperature of 29°C (84.2°F).

How many days does it rain in San Juan?

Throughout the year, there are 154 rainfall days, and 1160mm (45.67") of precipitation is accumulated.

What is the driest month in San Juan?

January is the month with the least rainfall. Rain falls for 12 days and accumulates 20mm (0.79") of precipitation.

What is the month with the least sunshine in San Juan?

Months with the least sunshine are January, May, September through December, with an average of 7h of sunshine.

When is the lowest UV index in San Juan?

Months with the lowest UV index are January and December, with an average maximum UV index of 8.

What are the months with the most sunshine in San Juan?

Months with the most sunshine in San Juan are February through April, June through August, with an average of 8h of sunshine.

What is the month with the highest UV index in San Juan?

Months with the highest UV index are March through September, with an average maximum UV index of 12.

What is the wettest month in San Juan?

The month with the most rainfall in San Juan is May when the rain falls for 12 days and typically aggregates up to 189mm (7.44") of precipitation.

When are the longest days in San Juan?

With an average of 13.3h of daylight, June has the longest days of the year.

What is the warmest month in San Juan?

Warmest months are July through September, with an average high-temperature of 32°C (89.6°F).

What is the month with the shortest days in San Juan?

December has the shortest days of the year, with an average of 11h of daylight.

Average temperature
San Juan, Dominican Republic

Average temperature - San Juan, Dominican Republic

The warmest months (with the highest average high temperature) are July, August and September (32°C).
Months with the lowest average high temperature are January, November and December (29°C).

Months with the highest average low temperature are May, June, August and September (19°C).
The coldest month (with the lowest average low temperature) is January (14°C).

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Average rainfall
San Juan, Dominican Republic

Average rainfall - San Juan, Dominican Republic

The wettest month (with the highest rainfall) is May (189mm).
The driest month (with the least rainfall) is January (20mm).

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Average rainfall days
San Juan, Dominican Republic

Average rainfall days - San Juan, Dominican Republic

The month with the highest number of rainy days is October (16 days).
Months with the least rainy days are February, March and April (10 days).

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Average daylight / Average sunshine
San Juan, Dominican Republic

Average daylight / Average sunshine - San Juan, Dominican Republic

The month with the longest days is June (Average daylight: 13.3h).
The month with the shortest days is December (Average daylight: 11h).

Months with the most sunshine are February, March, April, June, July and August (Average sunshine: 8h).
Months with the least sunshine are January, May, September, October, November and December (Average sunshine: 7).

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Average UV index
San Juan, Dominican Republic

Average UV index - San Juan, Dominican Republic

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
Months with the lowest UV index are January and December (UV index 8).

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