WanderWhen

Rio de Janeiro weather in December

December is a fair shoulder-season month in Rio de Janeiro — decent conditions with some trade-offs. Expect highs around 28°C, lows near 22°C, and about 16.3 days with rain.

6.3 · Fairtravel score for December
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg high
28°C
Avg low
22°C
Rainfall
150 mm
Rain days
16.3
Sunshine
10.3 h/day
Daylight
13.4 h

What to pack for Rio de Janeiro in December

  • light, breathable clothing
  • sun protection (hat, SPF 50)
  • a compact umbrella or rain shell — rain is frequent
  • expect humid, sticky conditions

Humidity averages 84%; max daily wind around 17 km/h.

How December compares

January: 5.8/10 JFebruary: 5.6/10 FMarch: 6.7/10 MApril: 8.8/10 AMay: 9.6/10 MJune: 9.5/10 JJuly: 9.8/10 JAugust: 9.3/10 ASeptember: 9.4/10 SOctober: 8.1/10 ONovember: 8.0/10 NDecember: 6.3/10 D

Best months in Rio de Janeiro: May–September. See the full best time to visit Rio de Janeiro guide.

Rio de Janeiro in December: the details

In December, Rio de Janeiro sees average daytime highs of 28°C (83°F) and overnight lows of 22°C (72°F). Rainfall totals roughly 150 mm across 16.3 rainy days, and the sun shines about 10.3 hours per day with 13.4 hours of daylight mid-month. Relative humidity averages 84%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Rio de Janeiro, Brazil (-22.91, -43.18) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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