Casillas Weather in December
What's the weather like in Casillas (Santa Rosa) in December 2025?
The climate in Casillas during December can be summarized as warm and very dry.
December is in the winter in Casillas and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 14°C (56°F) is normal.
| Daytime temperature | 23.9°C 75°F |
|---|---|
| Nightly temperature | 13.5°C 56.3°F |
| Average temperature | 18.7°C 65.7°F |
| Daily sunshine | 7.3 hrs |
| Avg rainfall | 3 mm 0.1 ins |
| Rainy days | 9 days |
| Sea temperature | 28.9°C 84°F |
| Humidity | 78% |
| Windspeed | 8.6kph 5 mph |
On average December is the 3rd driest month of the year in Casillas with around 3mm 0.1 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 7.3 hours of sunshine per day.
December temperatures in Casillas
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 Casillas in December 2025.
Other monthly averages
Best places to visit in December
Casillas weather stats
| Hottest month: | May | 26.9°C 80.4°F |
|---|---|---|
| Driest month: | February | 2mm 0.1ins |
| Sunniest month: | January | 7.9hrs |
| Coldest month: | January | 23.9°C 75°F |
| Wettest month: | June | 244mm 9.6ins |
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