Verdict: Excellent month
San Miguel de Allende Weather in December
December hits the sweet spot in San Miguel de Allende — highs around 22°C (72°F), ideal for a full day on foot. Rain is a non-issue, with only ~3 wet days in an average year. Overall, December is one of the best months of the year to be in San Miguel de Allende.
Average high
22°C / 72°F
Average low
8°C / 46°F
Rain days
~3
Precipitation
15 mm
What to pack for San Miguel de Allende in December
- Summer clothes, plus one light layer for air-con and evenings
- Evenings turn genuinely cool — pack a warm layer for after dark
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in San Miguel de Allende: Apr (30°C / 86°F) · Coolest: Jan (22°C / 72°F) · Wettest: Jul (~17 rain days)
22°
8°
Jan
25°
8°
Feb
28°
11°
Mar
30°
14°
Apr
30°
15°
May
28°
14°
Jun
26°
14°
Jul
25°
14°
Aug
25°
13°
Sep
25°
11°
Oct
24°
10°
Nov
22°
8°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)