Monthly weather forecast and climate
Jaco, Costa Rica

Weather in January

January, like December, in Jaco, Costa Rica, is another warm winter month, with average temperature varying between 24.5°C (76.1°F) and 29.5°C (85.1°F). In Jaco, Costa Rica, the average high-temperature is relatively the same as in December - a still moderately hot 29.5°C (85.1°F). Weather in January »

Weather in February

February, the last month of the winter, in Jaco, is another warm month, with average temperature ranging between min 24.8°C (76.6°F) and max 29.9°C (85.8°F). In Jaco, the average high-temperature is relatively the same as in January - a still warm 29.9°C (85.8°F). Weather in February »

Weather in March

March, the first month of the spring, in Jaco, is a tropical month, with average temperature ranging between min 25.3°C (77.5°F) and max 30.3°C (86.5°F). In Jaco, the average high-temperature is essentially the same as in February - a hot 30.3°C (86.5°F). Weather in March »

Weather in April

April, like March, is another hot spring month in Jaco, Costa Rica, with temperature in the range of an average high of 30.4°C (86.7°F) and an average low of 26.2°C (79.2°F). The warmest month is April, with an average high-temperature of 30.4°C (86.7°F) and an average low-temperature of 26.2°C (79.2°F). The average heat index is appraised at a sweltering 36.3°C (97.3°F). Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in Jaco, Costa Rica, with average temperature ranging between min 26.2°C (79.2°F) and max 29.5°C (85.1°F). In Jaco, the average high-temperature is essentially the same as in April - a moderately hot 29.5°C (85.1°F). Weather in May »

Weather in June

June, the first month of the summer, in Jaco, is also a moderately hot month, with average temperature varying between 25.5°C (77.9°F) and 28.8°C (83.8°F). In June, the average high-temperature is relatively the same as in May - a still warm 28.8°C (83.8°F). Weather in June »

Weather in July

July, like June, in Jaco, Costa Rica, is another warm summer month, with average temperature ranging between min 25.4°C (77.7°F) and max 28.7°C (83.7°F). In Jaco, the average high-temperature in July is practically the same as in June - a still warm 28.7°C (83.7°F). Weather in July »

Weather in August

August, the last month of the summer, in Jaco, is another warm month, with temperature in the range of an average high of 28.8°C (83.8°F) and an average low of 25.3°C (77.5°F). In Jaco, the average high-temperature is practically the same as in July - a still moderately hot 28.8°C (83.8°F). Weather in August »

Weather in September

September, the first month of the autumn, in Jaco, is also a moderately hot month, with average temperature varying between 25.3°C (77.5°F) and 28.5°C (83.3°F). In Jaco, Costa Rica, the average high-temperature is relatively the same as in August - a still moderately hot 28.5°C (83.3°F). Weather in September »

Weather in October

October, like September, in Jaco, Costa Rica, is another warm autumn month, with average temperature ranging between min 25.2°C (77.4°F) and max 28.1°C (82.6°F). October is the coldest month, with an average high-temperature of 28.1°C (82.6°F) and an average low-temperature of 25.2°C (77.4°F). The average heat index is estimated at a hot 32.4°C (90.3°F). Weather in October »

Weather in November

The last month of the autumn, November, is another warm month in Jaco, Costa Rica, with temperature in the range of an average low of 24.9°C (76.8°F) and an average high of 28.3°C (82.9°F). In November, the average high-temperature is essentially the same as in October - a still moderately hot 28.3°C (82.9°F). Weather in November »

Weather in December

The first month of the winter, December, is still a warm month in Jaco, Costa Rica, with temperature in the range of an average high of 28.7°C (83.7°F) and an average low of 24.6°C (76.3°F). In December, the average high-temperature is almost the same as in November - a still moderately hot 28.7°C (83.7°F). Weather in December »
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FAQ

How many days does it rain in Jaco?

Throughout the year, in Jaco, there are 236.2 rainfall days, and 1501mm (59.09") of precipitation is accumulated.

What is the month with the shortest days in Jaco?

Months with the shortest days are January and December, with an average of 11.6h of daylight.

When is the highest UV index in Jaco?

January through December, with an average maximum UV index of 7, are months with the highest UV index.

What are the months with the lowest UV index in Jaco?

Months with the lowest UV index in Jaco are January through December, with an average maximum UV index of 7.

What is the least humid month in Jaco?

Months with the lowest humidity in Jaco, Costa Rica, are February and March, with an average relative humidity of 68%.

What is the driest month in Jaco?

The month with the least rainfall in Jaco, Costa Rica, is February when the rain falls for 7.8 days and typically collects 11mm (0.43") of precipitation.

What is the month with the warmest sea water in Jaco?

The month with the warmest seawater in Jaco is March, with an average sea temperature of 29.4°C (84.9°F).

What is the warmest month in Jaco?

April is the warmest month, with an average high-temperature of 30.4°C (86.7°F) and an average low-temperature of 26.2°C (79.2°F).

What are the most humid months in Jaco?

Months with the highest humidity in Jaco, Costa Rica, are June and October, with an average relative humidity of 80%.

When are the longest days in Jaco?

June has the longest days of the year, with an average of 12.7h of daylight.

What month has the most sunshine in Jaco?

The month with the most sunshine is July, with an average of 10.1h of sunshine.

What is the coldest month in Jaco?

With an average high-temperature of 28.1°C (82.6°F) and an average low-temperature of 25.2°C (77.4°F), October is the coldest month in Jaco.

What is the wettest month in Jaco?

October is the month with the most rainfall. Rain falls for 26.1 days and accumulates 383mm (15.08") of precipitation.

What is the month with the least sunshine in Jaco?

October has the least sunshine of the year in Jaco, Costa Rica, with an average of 8.1h of sunshine.

What is the month with the coldest sea water in Jaco?

With an average sea temperature of 27.8°C (82°F), November is the month with the coldest seawater in Jaco, Costa Rica.

Average temperature
Jaco, Costa Rica

Average temperature - Jaco, Costa Rica

The warmest month (with the highest average high temperature) is April (30.4°C).
The month with the lowest average high temperature is October (28.1°C).

Months with the highest average low temperature are April and May (26.2°C).
The coldest month (with the lowest average low temperature) is January (24.5°C).

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Average pressure
Jaco, Costa Rica

Average pressure - Jaco, Costa Rica

The month with the highest atmospheric pressure is January (1011.4mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).

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Average wind speed
Jaco, Costa Rica

Average wind speed - Jaco, Costa Rica

The windiest month (with the highest average wind speed) is March (9.7km/h).
The calmest month (with the lowest average wind speed) is June (7.6km/h).

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Average humidity
Jaco, Costa Rica

Average humidity - Jaco, Costa Rica

Months with the highest relative humidity are June and October (80%).
Months with the lowest relative humidity are February and March (68%).

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Average rainfall
Jaco, Costa Rica

Average rainfall - Jaco, Costa Rica

The wettest month (with the highest rainfall) is October (383mm).
The driest month (with the least rainfall) is February (11mm).

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Average rainfall days
Jaco, Costa Rica

Average rainfall days - Jaco, Costa Rica

The month with the highest number of rainy days is October (26.1 days).
The month with the least rainy days is February (7.8 days).

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Average sea temperature
Jaco, Costa Rica

Average sea temperature - Jaco, Costa Rica

The best month for swimming (with the highest average sea temperature) is March (29.4°C).
The coldest month (with the lowest average sea temperature) is November (27.8°C).

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Average daylight / Average sunshine
Jaco, Costa Rica

Average daylight / Average sunshine - Jaco, 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 July (Average sunshine: 10.1h).
The month with the least sunshine is October (Average sunshine: 8.1h).

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Average sunshine days
Jaco, Costa Rica

Average sunshine days - Jaco, Costa Rica

The month with the most sunshine days is March (18.6 days).
The month with the least sunshine days is May (4.3 days).

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Average UV index
Jaco, Costa Rica

Average UV index - Jaco, Costa Rica

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

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Average visibility
Jaco, Costa Rica

Average visibility - Jaco, Costa Rica

Months with the highest visibility are January, February, March, April, June, July, August, September, November and December (10km).
Months with the lowest visibility are May and October (9km).

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