San Diego Weather in December
What's the weather like in San Diego (Cartago) in December 2024?
The climate in San Diego during December can be summarized as warm and reasonably dry.
December is in the winter in San Diego and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around 23°C (74°F), whilst at night 16°C (60°F) is normal.
| Daytime temperature | 23.4°C 74.1°F |
|---|---|
| Nightly temperature | 15.6°C 60.1°F |
| Average temperature | 19.5°C 67.1°F |
| Daily sunshine | 6.8 hrs |
| Avg rainfall | 36 mm 1.4 ins |
| Rainy days | 16 days |
| Sea temperature | 28°C 82.5°F |
| Humidity | 81% |
| Windspeed | 19.8kph 12 mph |
On average December is the 4th driest month of the year in San Diego with around 36mm 1.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.8 hours of sunshine per day.
December temperatures in San Diego
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 Diego in December 2024.
Other monthly averages
Best places to visit in December
San Diego weather stats
| Hottest month: | May | 25°C 77°F |
|---|---|---|
| Driest month: | January | 7mm 0.3ins |
| Sunniest month: | March | 7.6hrs |
| Coldest month: | January | 22.9°C 73.2°F |
| Wettest month: | September | 372mm 14.6ins |
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