San Juan Weather in December
What's the weather like in San Juan (San Juan) in December 2024?
The climate in San Juan during December can be summarized as hot and dry.
December is in the summer in San Juan and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a warm 33°C (92°F), whilst at night 18°C (63°F) is normal.
| Daytime temperature | 33.2°C 91.7°F |
|---|---|
| Nightly temperature | 17.5°C 63.4°F |
| Average temperature | 25.3°C 77.5°F |
| Daily sunshine | 11.6 hrs |
| Avg rainfall | 11 mm 0.4 ins |
| Rainy days | 4 days |
| Sea temperature | 17.5°C 63.6°F |
| Humidity | 46% |
| Windspeed | 9.7kph 6 mph |
On average December is the 4th wettest month of the year in San Juan with around 11mm 0.4 inches of rain making it a dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.6 hours of sunshine per day.
December temperatures in San Juan
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Juan in December 2024.
Other monthly averages
Best places to visit in December
San Juan weather stats
| Hottest month: | January | 33.3°C 91.9°F |
|---|---|---|
| Driest month: | May | 2mm 0.1ins |
| Sunniest month: | November | 11.4hrs |
| Coldest month: | July | 15.3°C 59.5°F |
| Wettest month: | January | 19mm 0.7ins |
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