WanderWhen

Santiago weather in December

December is one of the best months to visit Santiago. Expect highs around 29°C, lows near 14°C, and about 0.2 days with rain.

9.5 · Excellenttravel score for December
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg high
29°C
Avg low
14°C
Rainfall
2 mm
Rain days
0.2
Sunshine
13.5 h/day
Daylight
14.2 h

What to pack for Santiago in December

  • light, breathable clothing
  • sun protection (hat, SPF 50)

Humidity averages 47%; max daily wind around 18 km/h.

How December compares

January: 9.0/10 JFebruary: 9.0/10 FMarch: 10.0/10 MApril: 10.0/10 AMay: 10.0/10 MJune: 7.8/10 JJuly: 8.7/10 JAugust: 9.3/10 ASeptember: 10.0/10 SOctober: 10.0/10 ONovember: 10.0/10 NDecember: 9.5/10 D

Best months in Santiago: March–May & August–December. See the full best time to visit Santiago guide.

Santiago in December: the details

In December, Santiago sees average daytime highs of 29°C (85°F) and overnight lows of 14°C (57°F). Rainfall totals roughly 2 mm across 0.2 rainy days, and the sun shines about 13.5 hours per day with 14.2 hours of daylight mid-month. Relative humidity averages 47%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Santiago, Chile (-33.46, -70.65) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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