Rio de Janeiro Climate — Average Highs, Lows & Rainfall by Month
Rio de Janeiro has a temperate climate with four distinct seasons. Daytime temperatures average 30°C / 86°F in February, the warmest month, and drop to 24°C / 76°F in July, the coldest. Overnight lows in July average 18°C / 64°F. Rio de Janeiro receives about 1008 mm of rain a year across roughly 136 wet days, with January the wettest month.
Averages for 2021–2025 · Open-Meteo Historical Weather API (ERA5 reanalysis) · Updated 2026-10-05
Monthly averages in Rio de Janeiro
Average daytime high, overnight low and rainfall for each month of the year.
| Month | Avg high | Avg low | Rainfall | Wet days |
|---|---|---|---|---|
| January | 30°C / 85°F | 24°C / 74°F | 149 mm | 15 |
| February | 30°C / 86°F | 24°C / 75°F | 88 mm | 13 |
| March | 30°C / 85°F | 23°C / 74°F | 100 mm | 9 |
| April | 27°C / 81°F | 21°C / 71°F | 105 mm | 14 |
| May | 26°C / 79°F | 20°C / 68°F | 40 mm | 7 |
| June | 25°C / 77°F | 19°C / 66°F | 36 mm | 9 |
| July | 24°C / 76°F | 18°C / 64°F | 39 mm | 6 |
| August | 25°C / 77°F | 18°C / 65°F | 66 mm | 9 |
| September | 27°C / 80°F | 20°C / 67°F | 46 mm | 8 |
| October | 26°C / 79°F | 20°C / 69°F | 100 mm | 16 |
| November | 27°C / 80°F | 21°C / 69°F | 100 mm | 14 |
| December | 29°C / 84°F | 22°C / 72°F | 139 mm | 16 |
Best time to visit Rio de Janeiro
June, July, May offer the most comfortable weather in Rio de Janeiro: mild daytime temperatures with the year's lowest rainfall — June averages 25°C (77°F); July averages 24°C (76°F); May averages 26°C (79°F).
Rio de Janeiro climate FAQ
- What is the hottest month in Rio de Janeiro?
- February is the hottest month in Rio de Janeiro, with average daytime highs of 30°C / 86°F and overnight lows of 24°C / 75°F (averages for 2021–2025).
- What is the coldest month in Rio de Janeiro?
- July is the coldest month in Rio de Janeiro, with average highs of 24°C / 76°F and lows of 18°C / 64°F.
- How much rain does Rio de Janeiro get a year?
- Rio de Janeiro receives about 1008 mm of rainfall a year, spread over roughly 136 wet days. January is the wettest month (149 mm on average) and June the driest (36 mm).
- When is the best time to visit Rio de Janeiro?
- June, July, May are the most comfortable months in Rio de Janeiro: mild daytime temperatures with the least rainfall of the year.
Want today's conditions instead of averages?
See live weather in Rio de Janeiro →Source: Open-Meteo Historical Weather API (ERA5 reanalysis), Open-Meteo. Averages are daily means across 2021–2025 and are rounded for display — for a live forecast see the Rio de Janeiro weather page.