Rio de Janeiro weather in May 2025

Expect 79°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Rio de Janeiro in May. Check more long-term weather averages for Rio de Janeiro in May before you book your next holiday to Brazil in 2025/2026.

  • 79°F maximum daytime temperature in May in Rio de Janeiro79
    79°F max day temperature
  • 6 hours of sunshine per day
  • 12 days with some rainfall in May in Rio de Janeiro12
    12 days with some rainfall
  • 63°F minimum night-time temperature in May in Rio de Janeiro63
    63°F min night temperature
  • 11 hours of daylight per day in May in Rio de Janeiro11
    11 hours of daylight per day
  • Low heat & humidity in May in Rio de JaneiroL
    Low heat & humidity
  • 4.2 inches monthly rainfall in May in Rio de Janeiro4.2
    4.2 inches of monthly rainfall
  • UV (maximum) index 7 (High) in May in Rio de Janeiro7
    7 (High) UV index
  • 75°F sea temperature in May in Rio de Janeiro75
    75°F sea temperature

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The May weather guide for Brazil (Rio de Janeiro) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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More about Brazil

How hot is it in Rio de Janeiro in May?

Daytime temperatures usually reach 79°F in Rio de Janeiro in May with low heat and humidity, falling to 63°F at night.

How sunny is it in Rio de Janeiro in May?

There are normally 6 hours of bright sunshine each day in Rio de Janeiro in May - that's 53% of daylight hours.

How warm is the sea around Rio de Janeiro in May?

The average sea temperature around Rio de Janeiro in May is 75°F.

Does it rain in Rio de Janeiro in May?

There are usually 12 days with some rain in Rio de Janeiro in May and the average monthly rainfall is 4.2 inches.

Rio de Janeiro May sunrise & sunset times

Browse the sunrise and sunset times for Rio de Janeiro in May 2025. Select a month to view Rio de Janeiro sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 06:13 17:27
Friday, 16th May 2025 06:19 17:19
Saturday, 31st May 2025 06:26 17:15

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