San Marcos Weather in December
What's the weather like in San Marcos (Santa Bárbara) in December 2024?
The climate in San Marcos during December can be summarized as warm, humid and damp.
December is in the winter in San Marcos and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a muggy 26°C (79°F), whilst at night 18°C (65°F) is normal.
| Daytime temperature | 26.3°C 79.3°F |
|---|---|
| Nightly temperature | 18.2°C 64.7°F |
| Average temperature | 22.2°C 72°F |
| Daily sunshine | 6 hrs |
| Avg rainfall | 113 mm 4.5 ins |
| Rainy days | 14 days |
| Sea temperature | 27.8°C 82.1°F |
| Humidity | 84% |
| Windspeed | 17.3kph 11 mph |
On average December is the 5th driest month of the year in San Marcos with around 113mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
December temperatures in San Marcos
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 Marcos in December 2024.
Other monthly averages
Best places to visit in December
San Marcos weather stats
| Hottest month: | May | 31.4°C 88.5°F |
|---|---|---|
| Driest month: | March | 43mm 1.7ins |
| Sunniest month: | March | 8.2hrs |
| Coldest month: | January | 26.1°C 79°F |
| Wettest month: | September | 295mm 11.6ins |
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