Weather in Jaco: December
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Average day temperature: | 82.0°F |
| Average night temperature: | 76.4°F | |
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Sea water temperature: | 83.2°F |
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Number of sunny days: | 5 days |
| Day length: | 11.6 - 11.6 hours | |
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Number of rainy days: | 7 days |
| Precipitation totals: | 4.1 in. | |
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forecast
| Jaco |
temperature
| Jaco |
Air temperature in December, °F
The highest day temperature during December of 2025 was 83°F. At the same time the lowest night temperature was 73°F. Daily and nightly averages during December were 81.3°F and 75.6°F.
Sea water temperature in Jaco in December, °F
The average sea water temperature in December of 2025 was 83.2°F. The highest and lowest sea temperatures during the month were 84.2°F and 82.4°F.
Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Jaco in December is 4.1 in.
The average wind speed value in December is 4.2 mph It makes December lest windy month of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 5.2.
Best time for vacation in Jaco
Jaco on a weather map
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