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

In December, Phoenix averages 21°C high / 9°C low with about 19 mm of rain; San Diego averages 19°C high / 10°C low with about 46 mm.

Phoenix vs San Diego in December

Phoenix is the better pick in December — 81 vs 71 on SeasonMap's comfort score. Phoenix is nice, dry, while San Diego is nice, a little rain, muggy air.

Phoenix vs San Diego — December climate, side by side

	Phoenix	San Diego
Comfort score	81/100 (A)	71/100 (B)
Feels-like high	18°C	18°C
Avg high / low	21° / 9°	19° / 10°
Rainfall	19 mm	46 mm
Rainy days	3	4
Humidity	52%	76%
Air quality (AQI)	54	66

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

Phoenix vs San Diego in December — FAQ

Is December better in Phoenix or San Diego?: Phoenix is the better pick in December — 81 vs 71 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 December?: In December, Phoenix averages 21°C high / 9°C low with about 19 mm of rain; San Diego averages 19°C high / 10°C low with about 46 mm.