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Climate · Rio de Janeiro

Rio de Janeiro in December

Hot and wet, as the days hold steady.

Typical weather, averaged over 30 years

December in Rio de Janeiro is hot: highs near 88°F, lows near 72°F. Rain falls on about four days a week, and daylight holds at about 13 hours 31 minutes.December in Rio de Janeiro is hot: highs near 31°C, lows near 22°C. Rain falls on about four days a week, and daylight holds at about 13 hours 31 minutes.

High
88°F31°Caverage
Low
72°F22°Caverage
Wet days
4a week · 63% of days
Daylight
13h 31mon average

Is December a good time to visit Rio de Janeiro?

December sits outside Rio de Janeiro's best months, which run from June to August. Expect hot days and rain on about four days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How December sits in the year

week by week

Temperature

Highs near 88°F in December, against 80°F to 91°F through the year.Highs near 31°C in December, against 27°C to 33°C through the year.

Chance of a wet day

63% of days in December, against 25% to 63% through the year.

Cloud cover

68% cover in December, against 31% to 73% through the year.

Daylight

13h 31m in December, against 10h 45m to 13h 31m through the year.

Week by week, lightly smoothed, with December shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. November86°30°low 69°low 21°4 wet days a weekRain on about four days a week.
  2. December88°31°low 72°low 22°4 wet days a weekRain on about four days a week.
  3. January90°32°low 74°low 23°4 wet days a weekRain on about four days a week.

Where Rio de Janeiro sits, in December

America/Sao Paulo
this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
5:02 AMsets 6:34 PM
Above the sea
0 mlow-lying
Latitude
22.9°Ssouthern hemisphere
Nearest of ours
São Paulo357 km west

The land around Rio de Janeiro, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Brazil in December

high · low · wet days
See December on the planning mapThe whole year in Rio de Janeiro

Typical weather, averaged over 30 years (1995–2024), read 11 km east of Rio de Janeiro. Its own grid square is mostly sea and holds only a daily average, so the page reads the nearest square with a true high and low near the town's height. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (0 m) against the climate model's (66 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (0 m) against the climate model's (66 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.