Verdict: Excellent month
Santiago Weather in December
December runs warm in Santiago, with daily highs around 29°C (84°F) and nights near 14°C (57°F). Rain is a non-issue, with only ~0 wet days in an average year. Overall, December is one of the best months of the year to be in Santiago.
Average high
29°C / 84°F
Average low
14°C / 57°F
Rain days
~0
Precipitation
2 mm
What to pack for Santiago in December
- Summer clothes, plus one light layer for air-con and evenings
- High-SPF sunscreen, sunglasses, and a refillable water bottle
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in Santiago: Jan (30°C / 86°F) · Coolest: Jun (15°C / 59°F) · Wettest: Jun (~7 rain days)
30°
15°
Jan
30°
15°
Feb
29°
14°
Mar
24°
12°
Apr
19°
9°
May
15°
8°
Jun
15°
7°
Jul
16°
7°
Aug
18°
8°
Sep
23°
10°
Oct
26°
12°
Nov
29°
14°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)