Monthly weather forecast and climate
Jaco, Costa Rica

How many days does it rain in Jaco?

In Jaco, during the entire year, the rain falls for 185 days and collects up to 2615mm (103") of precipitation.

What is the driest month in Jaco?

January is the only month when rain does not fall in Jaco, Costa Rica.

When does it rain in Jaco?

February through December are months with rainfall.

What are the warmest months in Jaco?

March and April, with an average high-temperature of 32°C (89.6°F), are warmest months.

What month is the sea warmest in Jaco?

Month with the warmest seawater in Jaco, Costa Rica, is March, with an average sea temperature of 29.4°C (84.9°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What are the coldest months in Jaco?

The coldest months are September through December, with an average high-temperature of 29°C (84.2°F).

What is the wettest month in Jaco?

October is the month with the most rainfall in Jaco, Costa Rica. Rain falls for 21 days and accumulates 503mm (19.8") of precipitation.

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. For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.
Average temperature - Jaco, Costa Rica

Warmest months (with the highest average high temperature) are March and April (32°C).
Months with the lowest average high temperature are September, October, November and December (29°C).

Months with the highest average low temperature are March, April and May (24°C).
Coldest months (with the lowest average low temperature) are September, October, November and December (22°C).

Average rainfall - Jaco, Costa Rica
Average rainfall days - Jaco, Costa Rica

Months with the highest number of rainy days are June, August and September (22 days).
Months with the lowest number of rainy days are February and March (7 days).

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).

Average daylight / Average sunshine - Jaco, 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).

Months with most sunshine are February, March and April (Average sunshine: 8h).
Months with least sunshine are September and October (Average sunshine: 5).

Average UV index - Jaco, 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).

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