Weather in San Diego in January
In an average January, San Diego sees a daily high around 65°F and a low around 45°F, based on 1980–2026 of local climate records.
| Average high | 65°F |
|---|---|
| Typical high range | 57°F to 75°F |
| Average low | 45°F |
| Typical low range | 38°F to 51°F |
| Average daily precipitation | 0.10 in |
January records
The most extreme January on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total January accumulation.
High
Highest
86°F
2003-01-31
Lowest
48°F
2002-01-29
Low
Highest
59°F
2021-01-20
Lowest
30°F
2007-01-14
Feels-like
Highest
88°F
2003-01-31
Lowest
23°F
1989-01-07
Humidity
Highest
12.9 g/m³
1980-01-13
Lowest
1.1 g/m³
2025-01-21
Wind
Highest
23 mph
2017-01-20
Lowest
3 mph
1986-01-05
Gust
Highest
56 mph
1995-01-05
Lowest
9 mph
1986-01-05
Precip
Wettest
15.43 in
1993
Driest
0.15 in
2003
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