Monthly climate guide
Rio de Janeiro weather in May
Expect warm weather in Rio de Janeiro in May: afternoons reach about 25°C (77°F), while nights drop to around 20°C (68°F). Around 73 mm of rain falls over the month (some rain), and skies are often cloudy. Daytime highs are 2°C cooler than April and about the same as June.
What stands out in May
- May is among Rio de Janeiro's three coolest months.
- Good walking weather for combining Sugarloaf Mountain and Christ the Redeemer in one day.
- May sits in Rio de Janeiro's drier season — usually a comfortable time to visit.
- Days and nights are close, only about 5°C apart.
Avg high
25°C
77°F
Avg low
20°C
68°F
Rainfall
73 mm
some rain
Humidity
81%
relative
Sky
58%
cloud · often cloudy
Rio de Janeiro weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 29°C / 84°F | 24°C / 75°F | 215 mm | 82% | 65% |
| February | 29°C / 84°F | 24°C / 75°F | 180 mm | 82% | 62% |
| March | 28°C / 82°F | 23°C / 74°F | 197 mm | 83% | 71% |
| April | 27°C / 80°F | 22°C / 72°F | 106 mm | 82% | 57% |
| May | 25°C / 77°F | 20°C / 68°F | 73 mm | 81% | 58% |
| June | 25°C / 76°F | 19°C / 67°F | 56 mm | 81% | 53% |
| July | 24°C / 76°F | 18°C / 65°F | 30 mm | 78% | 45% |
| August | 25°C / 77°F | 18°C / 65°F | 47 mm | 77% | 46% |
| September | 26°C / 79°F | 19°C / 67°F | 73 mm | 77% | 53% |
| October | 27°C / 80°F | 21°C / 69°F | 99 mm | 79% | 69% |
| November | 26°C / 79°F | 21°C / 70°F | 261 mm | 83% | 78% |
| December | 28°C / 82°F | 23°C / 73°F | 235 mm | 83% | 71% |
What to pack for May
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is May a good time to visit Rio de Janeiro?
Our Rio de Janeiro guide recommends: April to June or September to October, avoiding the peak heat and crowds of the December–February summer.
Stick to well-touristed areas and take standard city precautions with valuables — like any major city, it pays to be aware of your surroundings.
Best time to visit Rio de Janeiro →Other Brazil cities in May
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Rio de Janeiro weather in May. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/brazil/rio-de-janeiro/may
<a href="https://weathercompare.eu/weather/brazil/rio-de-janeiro/may">Rio de Janeiro weather in May</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/brazil/rio-de-janeiro" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Rio de Janeiro weather in May"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/brazil/rio-de-janeiro/may">Rio de Janeiro weather in May</a> – WeatherCompare</p>
Rio de Janeiro in May: quick answers
Is May a good time to visit Rio de Janeiro?
May is a reasonable time for Rio de Janeiro: highs around 25°C and about 73 mm of rain, though not one of the three best months.
How warm is Rio de Janeiro in May?
Average highs are about 25°C (77°F) and average lows about 20°C (68°F), based on 10 years of daily data.
Does it rain a lot in Rio de Janeiro in May?
Rio de Janeiro typically gets around 73 mm of rain in May — some rain.
When is the best time to visit Rio de Janeiro?
April to June or September to October, avoiding the peak heat and crowds of the December–February summer.
Figures are long-term averages for the area around Rio de Janeiro (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.