What is the weather like in Phoenix vs San Diego in January?

In January, Phoenix averages 20°C high / 8°C low with about 16 mm of rain; San Diego averages 19°C high / 10°C low with about 56 mm.

Phoenix vs San Diego in January

Phoenix is the better pick in January — 78 vs 70 on SeasonMap's comfort score. Phoenix is nice, dry, while San Diego is nice, a little rain, muggy air.

Phoenix vs San Diego — January climate, side by side

	Phoenix	San Diego
Comfort score	78/100 (B)	70/100 (B)
Feels-like high	17°C	18°C
Avg high / low	20° / 8°	19° / 10°
Rainfall	16 mm	56 mm
Rainy days	3	6
Humidity	54%	77%
Air quality (AQI)	59	56

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Phoenix vs San Diego in January — FAQ

Is January better in Phoenix or San Diego?: Phoenix is the better pick in January — 78 vs 70 on SeasonMap's comfort score. Phoenix is nice, dry, while San Diego is nice, a little rain, muggy air.
What is the weather like in Phoenix vs San Diego in January?: In January, Phoenix averages 20°C high / 8°C low with about 16 mm of rain; San Diego averages 19°C high / 10°C low with about 56 mm.