Climate and monthly weather forecast
Rio San Juan, Dominican Republic

Weather in January

January, like December, in Rio San Juan, Dominican Republic, is another warm winter month, with temperature in the range of an average high of 28°C (82.4°F) and an average low of 19°C (66.2°F). January, February and December, with an average high-temperature of 28°C (82.4°F), are the coldest months. Weather in January »

Weather in February

The last month of the winter, February, is another warm month in Rio San Juan, Dominican Republic, with an average temperature varying between 19°C (66.2°F) and 28°C (82.4°F). January, February and December, with an average high-temperature of 28°C (82.4°F), are the coldest months. Weather in February »

Weather in March

The first month of the spring, March, is still a warm month in Rio San Juan, Dominican Republic, with an average temperature fluctuating between 29°C (84.2°F) and 19°C (66.2°F). In March, the average high-temperature is relatively the same as in February - a still warm 29°C (84.2°F). Weather in March »

Weather in April

April is a hot spring month in Rio San Juan, Dominican Republic, with an average temperature fluctuating between 30°C (86°F) and 20°C (68°F). In April, the average high-temperature is practically the same as in March - a tropical 30°C (86°F). Weather in April »

Weather in May

The last month of the spring, May, is another hot month in Rio San Juan, Dominican Republic, with an average temperature fluctuating between 21°C (69.8°F) and 31°C (87.8°F). In May, the average high-temperature is relatively the same as in April - a still hot 31°C (87.8°F). Weather in May »

Weather in June

The first month of the summer, June, is also a hot month in Rio San Juan, Dominican Republic, with temperature in the range of an average high of 32°C (89.6°F) and an average low of 22°C (71.6°F). The warmest months are June through September, with an average high-temperature of 32°C (89.6°F). Weather in June »

Weather in July

July, the same as June, in Rio San Juan, Dominican Republic, is another tropical summer month, with an average temperature varying between 32°C (89.6°F) and 22°C (71.6°F). The warmest months are June through September, with an average high-temperature of 32°C (89.6°F). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Rio San Juan, Dominican Republic, with an average temperature ranging between max 32°C (89.6°F) and min 22°C (71.6°F). The warmest months are June through September, with an average high-temperature of 32°C (89.6°F). In Rio San Juan, during August, the rain falls for 16 days and regularly aggregates up to 162mm (6.38") of precipitation. Weather in August »

Weather in September

September, the first month of the autumn in Rio San Juan, is still a tropical month, with an average temperature fluctuating between 32°C (89.6°F) and 22°C (71.6°F). June through September, with an average high-temperature of 32°C (89.6°F), are the warmest months. In Rio San Juan, in September, during 15 rainfall days, 131mm (5.16") of precipitation is typically accumulated. Weather in September »

Weather in October

October, like September, is a hot autumn month in Rio San Juan, Dominican Republic, with an average temperature ranging between max 31°C (87.8°F) and min 21°C (69.8°F). In October, the average high-temperature is relatively the same as in September - a still hot 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 Rio San Juan, Dominican Republic, with temperature in the range of an average high of 29°C (84.2°F) and an average low of 20°C (68°F). In November, the average high-temperature is essentially the same as in October - a warm 29°C (84.2°F). Weather in November »

Weather in December

The first month of the winter, December, is still a warm month in Rio San Juan, Dominican Republic, with an average temperature fluctuating between 28°C (82.4°F) and 20°C (68°F). The coldest months are January, February and December, with an average high-temperature of 28°C (82.4°F). Weather in December »
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FAQ

What are the coldest months in Rio San Juan?

January, February and December, with an average high-temperature of 28°C (82.4°F), are the coldest months in Rio San Juan, Dominican Republic.

How many days does it rain in Rio San Juan?

In Rio San Juan, during the entire year, the rain falls for 162 days and collects up to 1895mm (74.61") of precipitation.

What is the driest month in Rio San Juan?

The month with the least rainfall is February, when the rain falls for 11 days and typically collects 103mm (4.06") of precipitation.

What month is the sea coldest in Rio San Juan?

With an average sea temperature of 25.7°C (78.3°F), February is the month with the coldest seawater.

When is the highest UV index in Rio San Juan?

March through August, with an average maximum UV index of 12, are months with the highest UV index in Rio San Juan, Dominican Republic.

What are the warmest months in Rio San Juan?

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

When are the longest days in Rio San Juan?

June has the longest days of the year, with an average of 13h and 18min of daylight.

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

The months with the most sunshine in Rio San Juan are June through August, with an average of 8h of sunshine.

When is the sea warmest in Rio San Juan?

September is the month with the warmest seawater in Rio San Juan, Dominican Republic, with an average sea temperature of 29.2°C (84.6°F).

What is the rainiest month in Rio San Juan?

The month with the most rainfall is November, when the rain falls for 14 days and typically aggregates up to 268mm (10.55") of precipitation.

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

The months with the least sunshine are November and December, with an average of 6h of sunshine.

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

With an average of 10h and 58min of daylight, December has the shortest days of the year in Rio San Juan, Dominican Republic.

Is there Daylight Saving Time (DST) in Rio San Juan?

Rio San Juan, Dominican Republic, does not observe Daylight Saving Time (DST). AST timezone is used over the entire year.

What is the month with the lowest UV index in Rio San Juan?

With an average maximum UV index of 7, December is the month with the lowest UV index.

Average temperature
Rio San Juan, Dominican Republic

Average temperature - Rio San Juan, Dominican Republic

The warmest months (with the highest average high temperature) are June, July, August and September (32°C).
The months with the lowest average high temperature are January, February and December (28°C).

The months with the highest average low temperature are June, July, August and September (22°C).
The coldest months (with the lowest average low temperature) are January, February and March (19°C).

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Average rainfall
Rio San Juan, Dominican Republic

Average rainfall - Rio San Juan, Dominican Republic

The wettest month (with the highest rainfall) is November (268mm).
The driest month (with the least rainfall) is February (103mm).

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Average rainfall days
Rio San Juan, Dominican Republic

Average rainfall days - Rio San Juan, Dominican Republic

The months with the highest number of rainy days are August and October (16 days).
The month with the least rainy days is April (10 days).

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Average sea temperature
Rio San Juan, Dominican Republic

Average sea temperature - Rio San Juan, Dominican Republic

The best month for swimming (with the highest average sea temperature) is September (29.2°C).
The coldest month (with the lowest average sea temperature) is February (25.7°C).

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Average daylight / Average sunshine
Rio San Juan, Dominican Republic

Average daylight / Average sunshine - Rio San Juan, Dominican Republic

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 10h and 58min).

The months with the most sunshine are June, July and August (Average sunshine: 8h).
The months with the least sunshine are November and December (Average sunshine: 6h).

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Average UV index
Rio San Juan, Dominican Republic

Average UV index - Rio San Juan, Dominican Republic

The months with the highest UV index are March, April, May, June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 7).

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