Monthly weather forecast and climate
Alajuela, Costa Rica

Weather in January

January, like December, in Alajuela, Costa Rica, is a moderately hot winter month, with average temperature ranging between min 15.2°C (59.4°F) and max 25.9°C (78.6°F). In Alajuela, the average high-temperature in January is essentially the same as in December - a still warm 25.9°C (78.6°F). Weather in January »

Weather in February

February, the last month of the winter, in Alajuela, is also a moderately hot month, with temperature in the range of an average low of 15.3°C (59.5°F) and an average high of 26.9°C (80.4°F). In Alajuela, the average high-temperature is practically the same as in January - a still warm 26.9°C (80.4°F). Weather in February »

Weather in March

The first month of the spring, March, is still a warm month in Alajuela, Costa Rica, with average temperature varying between 15.9°C (60.6°F) and 27.8°C (82°F). In Alajuela, the average high-temperature is relatively the same as in February - a still moderately hot 27.8°C (82°F). Weather in March »

Weather in April

April, like March, in Alajuela, Costa Rica, is a moderately hot spring month, with average temperature ranging between max 28°C (82.4°F) and min 17.5°C (63.5°F). April is the warmest month, with an average high-temperature of 28°C (82.4°F) and an average low-temperature of 17.5°C (63.5°F). The average heat index in April is calculated to a hot 31.4°C (88.5°F). Weather in April »

Weather in May

The last month of the spring, May, is another warm month in Alajuela, Costa Rica, with average temperature varying between 18.3°C (64.9°F) and 26.1°C (79°F). In May, the average high-temperature is essentially the same as in April - a still warm 26.1°C (79°F). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Alajuela, Costa Rica, with temperature in the range of an average low of 18.1°C (64.6°F) and an average high of 24.8°C (76.6°F). In June, the average high-temperature is almost the same as in May - a still moderately hot 24.8°C (76.6°F). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Alajuela, Costa Rica, with average temperature ranging between min 17.3°C (63.1°F) and max 24.8°C (76.6°F). In Alajuela, the average high-temperature remains the same as in June - a still warm 24.8°C (76.6°F). Weather in July »

Weather in August

August, the last month of the summer, in Alajuela, is also a moderately hot month, with temperature in the range of an average low of 17.3°C (63.1°F) and an average high of 24.9°C (76.8°F). In August, the average high-temperature is almost the same as in July - a still moderately hot 24.9°C (76.8°F). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Alajuela, Costa Rica, with average temperature ranging between min 17.5°C (63.5°F) and max 24.5°C (76.1°F). In September, the average high-temperature is almost the same as in August - a still warm 24.5°C (76.1°F). Weather in September »

Weather in October

October, like September, in Alajuela, Costa Rica, is a moderately hot autumn month, with average temperature ranging between max 23.8°C (74.8°F) and min 17.5°C (63.5°F). The coldest month is October, with an average high-temperature of 23.8°C (74.8°F) and an average low-temperature of 17.5°C (63.5°F). Weather in October »

Weather in November

November, the last month of the autumn, in Alajuela, is also a moderately hot month, with average temperature ranging between max 24.5°C (76.1°F) and min 16.5°C (61.7°F). In Alajuela, the average high-temperature is almost the same as in October - a still warm 24.5°C (76.1°F). Weather in November »

Weather in December

The first month of the winter, December, is still a warm month in Alajuela, Costa Rica, with average temperature fluctuating between 25.2°C (77.4°F) and 15.7°C (60.3°F). In December, the average high-temperature is practically the same as in November - a still warm 25.2°C (77.4°F). Weather in December »
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FAQ

How much does it rain in Alajuela?

Throughout the year, there are 289.5 rainfall days, and 2506mm (98.66") of precipitation is accumulated.

What is the month with the lowest UV index in Alajuela?

January, February, May through December, with an average maximum UV index of 5, are months with the lowest UV index in Alajuela, Costa Rica.

What is the driest month in Alajuela?

The month with the least rainfall in Alajuela, Costa Rica, is February when the rain falls for 12.3 days and typically collects 25mm (0.98") of precipitation.

What month has the most sunshine in Alajuela?

With an average of 9.4h of sunshine, February has the most sunshine of the year in Alajuela, Costa Rica.

What is the least humid month in Alajuela?

March is the least humid month, with an average relative humidity of 71%.

When is the highest UV index in Alajuela?

Months with the highest UV index in Alajuela are March and April, with an average maximum UV index of 6.

What is the warmest month in Alajuela?

April is the warmest month, with an average high-temperature of 28°C (82.4°F) and an average low-temperature of 17.5°C (63.5°F).

When are the longest days in Alajuela?

June and July, with an average of 12.7h of daylight, are months with the longest days in Alajuela.

What is the coldest month in Alajuela?

The coldest month in Alajuela, Costa Rica, is October, with an average high-temperature of 23.8°C (74.8°F) and an average low-temperature of 17.5°C (63.5°F).

What is the most humid month in Alajuela?

With an average relative humidity of 90%, October is the most humid month in Alajuela.

What is the wettest month in Alajuela?

The month with the most rainfall is October when the rain falls for 30.5 days and typically aggregates up to 421mm (16.57") of precipitation.

What is the month with the least sunshine in Alajuela?

With an average of 6.2h of sunshine, October has the least sunshine of the year in Alajuela, Costa Rica.

What is the month with the shortest days in Alajuela?

December has the shortest days of the year in Alajuela, with an average of 11.5h of daylight.

Average temperature
Alajuela, Costa Rica

Average temperature - Alajuela, Costa Rica

The warmest month (with the highest average high temperature) is April (28°C).
The month with the lowest average high temperature is October (23.8°C).

The month with the highest average low temperature is May (18.3°C).
The coldest month (with the lowest average low temperature) is January (15.2°C).

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Average pressure
Alajuela, Costa Rica

Average pressure - Alajuela, Costa Rica

The month with the highest atmospheric pressure is January (1012.2mbar).
The month with the lowest atmospheric pressure is October (1010.8mbar).

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Average wind speed
Alajuela, Costa Rica

Average wind speed - Alajuela, Costa Rica

The windiest month (with the highest average wind speed) is February (10.9km/h).
The calmest month (with the lowest average wind speed) is September (3.9km/h).

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Average humidity
Alajuela, Costa Rica

Average humidity - Alajuela, Costa Rica

The month with the highest relative humidity is October (90%).
The month with the lowest relative humidity is March (71%).

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Average rainfall
Alajuela, Costa Rica

Average rainfall - Alajuela, Costa Rica

The wettest month (with the highest rainfall) is October (421mm).
The driest month (with the least rainfall) is February (25mm).

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Average rainfall days
Alajuela, Costa Rica

Average rainfall days - Alajuela, 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 (12.3 days).

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Average daylight / Average sunshine
Alajuela, Costa Rica

Average daylight / Average sunshine - Alajuela, Costa Rica

Months with the longest days are June and July (Average daylight: 12.7h).
The month with the shortest days is December (Average daylight: 11.5h).

The month with the most sunshine is February (Average sunshine: 9.4h).
The month with the least sunshine is October (Average sunshine: 6.2h).

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Average sunshine days
Alajuela, Costa Rica

Average sunshine days - Alajuela, Costa Rica

The month with the most sunshine days is February (11.9 days).
The month with the least sunshine days is September (0.4 days).

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Average UV index
Alajuela, Costa Rica

Average UV index - Alajuela, Costa Rica

Months with the highest UV index are March and April (UV index 6).
Months with the lowest UV index are January, February, May, June, July, August, September, October, November and December (UV index 5).

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Average visibility
Alajuela, Costa Rica

Average visibility - Alajuela, Costa Rica

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

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