December weather in San Diego, United States
Averages from 155 days in December across 2020–2024.
Typical conditions
| Average high | 17.9°C |
|---|---|
| Average low | 8.9°C |
| Average mean | 13.2°C |
| Total precipitation | 178.9 mm |
| Rainy days | 42 |
| Average precipitation hours | 1.9 h |
| Average max wind speed | 15.9 km/h |
| Average sunshine | 8.1 h/day |
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