Rio de Janeiro, Brazil Weather
Rio de Janeiro hourly forecast: next 24 hours
Today's high of 81°F (27°C) is about 3°F (2°C) above the typical August high of 78°F (25°C).
Current conditions in detail
Rio de Janeiro weather tomorrow (Friday, August 14)
Tomorrow in Rio de Janeiro looks patchy rain nearby, with a high of 75° and an overnight low of 69°. There is a 49% chance of rain - plan accordingly. Winds top out near 7 mph, and the UV index reaches 7 (high).
Rio de Janeiro 14-day forecast
About the weather in Rio de Janeiro
Rio de Janeiro has a tropical wet-and-dry climate, marked by year-round warmth split between a rainy season and a pronounced dry season. Average daytime highs range from about 77°F (25°C) in July to around 87°F (30°C) in January, and the city records roughly 148 days of measurable precipitation a year.
Rio de Janeiro weather: quick facts
- Hottest month: January - highs near 87°F (30°C)
- Coldest month: July - highs near 77°F (25°C)
- Record high: 104°F (40°C) · Record low: 53°F (12°C) (2015–2024)
- Wettest month: January (15 rainy days) · Sunniest: January (10.5 h sun/day)
- Climate type: tropical wet-and-dry - year-round warmth split between a rainy season and a pronounced dry season
Temperatures through the year
The warmest stretch of the year centers on January. Highs average 87°F (30°C) and overnight lows stay near 75°F (24°C). The coolest month is July, with typical highs of 77°F (25°C) and lows around 65°F (18°C). Based on 2015–2024 weather data, temperatures have reached as high as 104°F (40°C) and dropped as low as 53°F (12°C).
Rain, sun and snow
January is usually the wettest month. It brings about 6.3 inches (161 mm) of rain over 15 days, while July is the driest. January brings the most sunshine, averaging 10.5 hours of sun a day.
Season by season
September through November
September through November in Rio de Janeiro brings comfortable warmth, with daytime highs averaging 80°F (27°C) and nights around 69°F (20°C); expect showers on roughly 40 days across the season.
December through February
December through February in Rio de Janeiro runs hot, with daytime highs averaging 86°F (30°C) and nights around 74°F (24°C); expect showers on roughly 46 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
March through May
March through May in Rio de Janeiro is hot, with daytime highs averaging 81°F (27°C) and nights around 71°F (22°C); expect showers on roughly 37 days across the season.
June through August
June through August in Rio de Janeiro brings comfortable warmth, with daytime highs averaging 77°F (25°C) and nights around 65°F (18°C); expect showers on roughly 25 days across the season.
Average temperatures in Rio de Janeiro by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 87° | 75° | 15 | 6.3 in | 10.5 h/day | 79% |
| February | 86° | 75° | 15 | 5.9 in | 10.1 h/day | 81% |
| March | 85° | 74° | 14 | 6.0 in | 10.4 h/day | 82% |
| April | 81° | 71° | 12 | 3.2 in | 10.1 h/day | 81% |
| May | 78° | 68° | 10 | 2.5 in | 9.2 h/day | 81% |
| June | 77° | 66° | 9 | 1.6 in | 9.0 h/day | 80% |
| July | 77° | 65° | 7 | 1.6 in | 9.0 h/day | 79% |
| August | 78° | 64° | 10 | 2.5 in | 9.0 h/day | 78% |
| September | 80° | 67° | 9 | 2.8 in | 9.6 h/day | 79% |
| October | 80° | 69° | 15 | 3.5 in | 9.1 h/day | 81% |
| November | 81° | 70° | 16 | 5.8 in | 9.6 h/day | 82% |
| December | 84° | 73° | 16 | 5.4 in | 10.4 h/day | 82% |