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Climate · Rio de Janeiro

Rio de Janeiro in May

Warm and damp, as the days shorten.

Typical weather, averaged over 30 years

May in Rio de Janeiro is warm: highs near 82°F, lows near 66°F. Rain falls on about three days a week, and the days shorten by 24 minutes from the first week to the last.May in Rio de Janeiro is warm: highs near 28°C, lows near 19°C. Rain falls on about three days a week, and the days shorten by 24 minutes from the first week to the last.

High
82°F28°Caverage
Low
66°F19°Caverage
Wet days
3a week · 38% of days
Daylight
11h 01mon average

Is May a good time to visit Rio de Janeiro?

A good month, just outside Rio de Janeiro's best months, which run from June to August.

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 May sits in the year

week by week

Temperature

Highs near 82°F in May, against 80°F to 91°F through the year.Highs near 28°C in May, against 27°C to 33°C through the year.

Chance of a wet day

38% of days in May, against 25% to 63% through the year.

Cloud cover

41% cover in May, against 31% to 73% through the year.

Daylight

11h 01m in May, against 10h 45m to 13h 31m through the year.

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

Either side

  1. April86°30°low 71°low 22°3 wet days a weekRain on about three days a week.
  2. May82°28°low 66°low 19°3 wet days a weekRain on about three days a week.
  3. June81°27°low 64°low 18°2 wet days a weekRain on about two days a week.

Where Rio de Janeiro sits, in May

America/Sao Paulo
this place
typical high in May 40°F4°C95°F35°C
Sunrise, mid-May
6:18 AMsets 5:20 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 May, 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 May

high · low · wet days
See May 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.