Weather in Rio de Janeiro for May 2025
In general, the average temperature in Rio de Janeiro at the beginning of May is 29.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.6 °C by the end of May.
The climate of Rio de Janeiro in May is notably wet, with an average of 12 rainy days, and a total of 73.9 mm of precipitation.
Temperatures
Rain 🌧️
Rio de Janeiro in May average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  30° | 2 30° | 3  29° | 4 30° | |||
| 5 30° | 6  29° | 7 30° | 8  31° | 9 31° | 10  27° | 11 26° |
| 12 27° | 13 28° | 14 25° | 15 24° | 16 27° | 17  28° | 18 26° |
| 19 26° | 20 27° | 21 26° | 22 28° | 23 29° | 24 29° | 25 26° |
| 26 24° | 27 27° | 28 28° | 29 22° | 30 23° | 31 22° |
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Temperatures trend during May in Rio de Janeiro
May weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Overcast | 30° /21° | 0 mm | 8 | |
| 2 May | Overcast | 30° /21° | 0 mm | 8 | |
| 3 May | Sunny | 29° /21° | 0 mm | 8 | |
| 4 May | Sunny | 30° /21° | 0 mm | 9 | |
| 5 May | Sunny | 30° /21° | 0 mm | 8 | |
| 6 May | Cloudy | 29° /21° | 0 mm | 7 | |
| 7 May | Sunny | 30° /21° | 0 mm | 8 | |
| 8 May | Partly cloudy | 31° /21° | 0 mm | 9 | |
| 9 May | Sunny | 31° /22° | 0.1 mm | 9 | |
| 10 May | Moderate or heavy rain shower | 27° /22° | 6.4 mm | 7 | |
| 11 May | Moderate or heavy rain shower | 26° /21° | 3.1 mm | 6 | |
| 12 May | Moderate rain at times | 27° /21° | 2.2 mm | 7 | |
| 13 May | Moderate rain at times | 28° /21° | 1.9 mm | 7 | |
| 14 May | Cloudy | 25° /20° | 0.4 mm | 6 | |
| 15 May | Sunny | 24° /19° | 2.6 mm | 6 | |
| 16 May | Sunny | 27° /18° | 0.1 mm | 7 | |
| 17 May | Patchy rain possible | 28° /20° | 0.6 mm | 7 | |
| 18 May | Overcast | 26° /20° | 0.1 mm | 7 | |
| 19 May | Sunny | 26° /19° | 0 mm | 7 | |
| 20 May | Sunny | 27° /18° | 0 mm | 8 | |
| 21 May | Partly cloudy | 26° /18° | 1.8 mm | 7 | |
| 22 May | Cloudy | 28° /18° | 0 mm | 7 | |
| 23 May | Sunny | 29° /19° | 0 mm | 8 | |
| 24 May | Partly cloudy | 29° /20° | 0 mm | 8 | |
| 25 May | Sunny | 26° /19° | 1.6 mm | 7 | |
| 26 May | Sunny | 24° /18° | 16.2 mm | 7 | |
| 27 May | Sunny | 27° /19° | 6.7 mm | 7 | |
| 28 May | Sunny | 28° /19° | 2.8 mm | 7 | |
| 29 May | Moderate or heavy rain shower | 22° /19° | 21.7 mm | 6 | |
| 30 May | Patchy rain possible | 23° /19° | 0.2 mm | 6 | |
| 31 May | Moderate or heavy rain shower | 22° /18° | 5.3 mm | 6 | |
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Guide for Rio de Janeiro in May
In May, Rio de Janeiro experiences a transition from the warm, humid conditions of autumn to the cooler, drier weather of winter. At the beginning of the month, the average temperature hovers around 25°, with occasional showers and high humidity.
As the month progresses, the temperature gradually decreases to around 23°, and the humidity levels begin to drop. By the end of May, Rio de Janeiro enjoys more comfortable weather, with cooler evenings and pleasant daytime temperatures.
The city experiences an average of 7 hours of sunshine per day throughout May, providing ample opportunity for outdoor activities and sightseeing. However, visitors should be prepared for sporadic rain showers, especially in the first half of the month.
The sea temperature remains relatively warm, making it suitable for beach activities and water sports.
Overall, May in Rio de Janeiro offers a mix of warm days, occasional rain showers, and comfortable evenings, making it an ideal time to explore the city's vibrant culture, beautiful beaches, and stunning natural landscapes.
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Rio de Janeiro in May - FAQ
May rainfall patterns in Rio de Janeiro
UV exposure in Rio de Janeiro during May
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