Weather in San Diego, California, United States in December
In an average December, San Diego sees a daily high around 64°F and a low around 48°F, based on 1981–2026 of local climate records.
| Average high | 64°F |
|---|---|
| Typical high range | 56°F to 73°F |
| Average low | 48°F |
| Typical low range | 42°F to 53°F |
| Average daily precipitation | 0.10 in |
December records
The most extreme December on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
82°F
2025-12-18
Lowest
43°F
1990-12-23
Low
Highest
60°F
2025-12-11
Lowest
30°F
1990-12-23
Feels-like
Highest
83°F
2025-12-18
Lowest
16°F
1990-12-23
Humidity
Highest
13.4 g/m³
2014-12-03
Lowest
1.9 g/m³
1990-12-23
Wind
Highest
37 mph
2009-12-07
Lowest
4 mph
2000-12-01
Precip
Wettest
4.96 in
2016
Driest
0.04 in
2024
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