Monthly weather forecast and climate
San José, Costa Rica

Skyscape of San José, Costa Rica in the evening sun
Skyscape of San José, Costa Rica in the evening sun

Weather in January

January, like December, in San José, Costa Rica, is a moderately hot winter month, with average temperature fluctuating between 13.8°C (56.8°F) and 23.9°C (75°F). In January, the average high-temperature is almost the same as in December - a still warm 23.9°C (75°F). Weather in January »

Weather in February

The last month of the winter, February, is another warm month in San José, Costa Rica, with average temperature ranging between min 14°C (57.2°F) and max 25°C (77°F). In February, the average high-temperature is relatively the same as in January - a still warm 25°C (77°F). Weather in February »

Weather in March

The first month of the spring, March, is still a warm month in San José, Costa Rica, with average temperature fluctuating between 25.8°C (78.4°F) and 14.5°C (58.1°F). In San José, the average high-temperature is essentially the same as in February - a still warm 25.8°C (78.4°F). Weather in March »

Weather in April

April, like March, in San José, Costa Rica, is a moderately hot spring month, with temperature in the range of an average low of 15.9°C (60.6°F) and an average high of 26°C (78.8°F). April is the warmest month, with an average high-temperature of 26°C (78.8°F) and an average low-temperature of 15.9°C (60.6°F). Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in San José, Costa Rica, with temperature in the range of an average high of 24.3°C (75.7°F) and an average low of 16.9°C (62.4°F). In San José, the average high-temperature in May is relatively the same as in April - a still warm 24.3°C (75.7°F). Weather in May »

Weather in June

June, the first month of the summer, in San José, is still a warm month, with average temperature varying between 17°C (62.6°F) and 23.3°C (73.9°F). In June, the average high-temperature is almost the same as in May - a still moderately hot 23.3°C (73.9°F). Weather in June »

Weather in July

July, like June, in San José, Costa Rica, is another warm summer month, with average temperature varying between 15.8°C (60.4°F) and 23.3°C (73.9°F). In July, the average high-temperature remains the same as in June - a still moderately hot 23.3°C (73.9°F). Weather in July »

Weather in August

August, the last month of the summer, in San José, is another warm month, with average temperature fluctuating between 23.3°C (73.9°F) and 15.8°C (60.4°F). In August, the average high-temperature remains equal as in July - a still warm 23.3°C (73.9°F). Weather in August »

Weather in September

September, the first month of the autumn, in San José, is still a warm month, with temperature in the range of an average low of 16.4°C (61.5°F) and an average high of 23°C (73.4°F). In San José, the average high-temperature is relatively the same as in August - a still moderately hot 23°C (73.4°F). Weather in September »

Weather in October

October, the same as September, in San José, Costa Rica, is another pleasant autumn month, with average temperature ranging between min 16.1°C (61°F) and max 22.4°C (72.3°F). October is the coldest month, with an average high-temperature of 22.4°C (72.3°F) and an average low-temperature of 16.1°C (61°F). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in San José, Costa Rica, with average temperature varying between 15.2°C (59.4°F) and 22.7°C (72.9°F). In San José, the average high-temperature is almost the same as in October - a still pleasant 22.7°C (72.9°F). Weather in November »

Weather in December

The first month of the winter, December, is a moderately hot month in San José, Costa Rica, with average temperature fluctuating between 23.4°C (74.1°F) and 14°C (57.2°F). In December, the average high-temperature is almost the same as in November - a moderately hot 23.4°C (74.1°F). Weather in December »
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FAQ

How many days does it rain in San José?

Throughout the year, in San José, Costa Rica, there are 287.8 rainfall days, and 2585mm (101.77") of precipitation is accumulated.

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

January and December, with an average of 11.6h of daylight, are months with the shortest days in San José.

When is the highest UV index in San José?

Months with the highest UV index in San José are January through December, with an average maximum UV index of 5.

What are the months with the lowest UV index in San José?

Months with the lowest UV index in San José are January through December, with an average maximum UV index of 5.

What are the least humid months in San José?

Months with the lowest humidity in San José, Costa Rica, are February and March, with an average relative humidity of 75%.

What is the driest month in San José?

The month with the least rainfall in San José, Costa Rica, is February when the rain falls for 12.2 days and typically collects 26mm (1.02") of precipitation.

What month has the most sunshine in San José?

The month with the most sunshine is February, with an average of 9.2h of sunshine.

What is the warmest month in San José?

With an average high-temperature of 26°C (78.8°F) and an average low-temperature of 15.9°C (60.6°F), April is the warmest month.

When are the longest days in San José?

With an average of 12.7h of daylight, June has the longest days of the year in San José.

What is the most humid month in San José?

Months with the highest humidity in San José are September and October, with an average relative humidity of 91%.

What is the coldest month in San José?

With an average high-temperature of 22.4°C (72.3°F) and an average low-temperature of 16.1°C (61°F), October is the coldest month.

What is the wettest month in San José?

October is the month with the most rainfall. Rain falls for 30.5 days and accumulates 438mm (17.24") of precipitation.

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

The month with the least sunshine is October, with an average of 5.8h of sunshine.

Average temperature
San José, Costa Rica

Average temperature - San José, Costa Rica

The warmest month (with the highest average high temperature) is April (26°C).
The month with the lowest average high temperature is October (22.4°C).

The month with the highest average low temperature is June (17°C).
The coldest month (with the lowest average low temperature) is January (13.8°C).

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Average pressure
San José, Costa Rica

Average pressure - San José, Costa Rica

The month with the highest atmospheric pressure is January (1012.3mbar).
The month with the lowest atmospheric pressure is October (1010.8mbar).

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Average wind speed
San José, Costa Rica

Average wind speed - San José, Costa Rica

The windiest month (with the highest average wind speed) is February (10.7km/h).
The calmest month (with the lowest average wind speed) is September (4.3km/h).

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Average humidity
San José, Costa Rica

Average humidity - San José, Costa Rica

Months with the highest relative humidity are September and October (91%).
Months with the lowest relative humidity are February and March (75%).

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Average rainfall
San José, Costa Rica

Average rainfall - San José, Costa Rica

The wettest month (with the highest rainfall) is October (438mm).
The driest month (with the least rainfall) is February (26mm).

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Average rainfall days
San José, Costa Rica

Average rainfall days - San José, Costa Rica

The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (12.2 days).

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Average daylight / Average sunshine
San José, Costa Rica

Average daylight / Average sunshine - San José, Costa Rica

The month with the longest days is June (Average daylight: 12.7h).
Months with the shortest days are January and December (Average daylight: 11.6h).

The month with the most sunshine is February (Average sunshine: 9.2h).
The month with the least sunshine is October (Average sunshine: 5.8h).

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Average sunshine days
San José, Costa Rica

Average sunshine days - San José, Costa Rica

The month with the most sunshine days is March (13.5 days).
The month with the least sunshine days is September (0.1 days).

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Average UV index
San José, Costa Rica

Average UV index - San José, Costa Rica

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).

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Average visibility
San José, Costa Rica

Average visibility - San José, Costa Rica

Months with the highest visibility are January, February and March (9km).
Months with the lowest visibility are August, September, October and November (6km).

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