San José
Costa Rica
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
San José, Costa Rica

An aerial skyscape of San José, Costa Rica in the evening sun
An aerial skyscape of San José, Costa Rica in the evening sun
January, the same as December, is another warm winter month in San José, Costa Rica, with average temperature ranging between max 26°C (78.8°F) and min 17.8°C (64°F). In San José, the average high-temperature is practically the same as in December - a still warm 26°C (78.8°F). Weather in January »
The last month of the winter, February, is also a moderately hot month in San José, Costa Rica, with average temperature ranging between min 18°C (64.4°F) and max 26.8°C (80.2°F). In San José, the average high-temperature in February is relatively the same as in January - a still warm 26.8°C (80.2°F). Weather in February »

The first month of the spring, March, is also a moderately hot month in San José, Costa Rica, with temperature in the range of an average low of 18.1°C (64.6°F) and an average high of 27.9°C (82.2°F). In San José, Costa Rica, the average high-temperature is almost the same as in February - a still warm 27.9°C (82.2°F). Weather in March »

April, like March, in San José, Costa Rica, is another warm spring month, with average temperature varying between 18.8°C (65.8°F) and 28.4°C (83.1°F). The warmest month is April, with an average high-temperature of 28.4°C (83.1°F) and an average low-temperature of 18.8°C (65.8°F). In San José, in April, it is raining for 4 days, with typically 79.9mm (3.1") of accumulated precipitation. Weather in April »

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 low of 19°C (66.2°F) and an average high of 27.6°C (81.7°F). In San José, the average high-temperature in May is essentially the same as in April - a still warm 27.6°C (81.7°F). Weather in May »

June, the first month of the summer, in San José, is also a moderately hot month, with temperature in the range of an average high of 27°C (80.6°F) and an average low of 18.9°C (66°F). In San José, Costa Rica, the average high-temperature in June is essentially the same as in May - a still moderately hot 27°C (80.6°F). Weather in June »

July, the same as June, is another warm summer month in San José, Costa Rica, with average temperature varying between 19°C (66.2°F) and 26.9°C (80.4°F). In July, the average high-temperature is almost the same as in June - a still warm 26.9°C (80.4°F). Weather in July »

August, the last month of the summer, in San José, is also a moderately hot month, with average temperature varying between 18.8°C (65.8°F) and 27°C (80.6°F). In August, the average high-temperature is practically the same as in July - a still warm 27°C (80.6°F). Weather in August »

September, the first month of the autumn, in San José, is also a moderately hot month, with average temperature ranging between max 26.9°C (80.4°F) and min 18.2°C (64.8°F). In September, the average high-temperature is essentially the same as in August - a still moderately hot 26.9°C (80.4°F). Weather in September »

October, the same as September, is a moderately hot autumn month in San José, Costa Rica, with temperature in the range of an average low of 18.2°C (64.8°F) and an average high of 26.5°C (79.7°F). In San José, the average high-temperature is practically the same as in September - a still moderately hot 26.5°C (79.7°F). Weather in October »

The last month of the autumn, November, is also a moderately hot month in San José, Costa Rica, with average temperature ranging between min 18.6°C (65.5°F) and max 26.2°C (79.2°F). In San José, the average high-temperature in November is relatively the same as in October - a still warm 26.2°C (79.2°F). Weather in November »

The first month of the winter, December, is still a warm month in San José, Costa Rica, with average temperature fluctuating between 25.9°C (78.6°F) and 18.3°C (64.9°F). The coldest month is December, with an average high-temperature of 25.9°C (78.6°F) and an average low-temperature of 18.3°C (64.9°F). Weather in December »

How much does it rain in San José?

In San José, during the entire year, the rain falls for 107 days and collects up to 1971mm (77.6") of precipitation.

What is the driest month in San José?

January is the month with the least rainfall in San José, Costa Rica. Rain falls for 1 days and accumulates 6.3mm (0.2") of precipitation.

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

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

What month has the most sunshine in San José?

The month with the most sunshine in San José is February, with an average of 9.5h of sunshine.

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

February through October, with an average maximum UV index of 12, are months with the highest UV index in San José.

What is the warmest month in San José?

April is the warmest month in San José, Costa Rica, with an average high-temperature of 28.4°C (83.1°F) and an average low-temperature of 18.8°C (65.8°F).

When are the longest days in San José?

The month with the longest days in San José is June, with an average of 12.7h of daylight.

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

With an average of 4.8h of sunshine, June has the least sunshine of the year in San José.

What is the wettest month in San José?

The month with the most rainfall is September when the rain falls for 18 days and typically aggregates up to 355.1mm (14") of precipitation.

What is the coldest month in San José?

With an average high-temperature of 25.9°C (78.6°F) and an average low-temperature of 18.3°C (64.9°F), December is the coldest month in San José.

What is the month with the lowest UV index in San José?

December is the month with the lowest UV index in San José, with an average maximum UV index of 10.
Average temperature - San José, Costa Rica
Average rainfall - San José, Costa Rica

The wettest month (with the highest rainfall) is September (355.1mm).
The driest month (with the lowest rainfall) is January (6.3mm).

Average rainfall days - San José, Costa Rica

The month with the highest number of rainy days is September (18 days).
Months with the lowest number of rainy days are January and February (1 days).

Average daylight / Average sunshine - San José, Costa Rica

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

The month with most sunshine is February (Average sunshine: 9.5h).
The month with least sunshine is June (Average sunshine: 4.8h).

Average UV index - San José, Costa Rica

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).