Climate averages 1991–2020
Rio de Janeiro weather
in July.
A warm, moderately wet month: the coolest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Rio de Janeiro: daytime highs average 24.9°C and nights cool to about 17.1°C. By daytime temperature it is the coolest month of the year.
Expect about 51 mm of rain on roughly 8 days, which makes July a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 52 min on an average July day.
The nearest other city in this atlas is São Gonçalo (16 km away). In July its highs average 24.3°C, 0.6°C cooler than Rio de Janeiro, with 49 mm of rain.
Among the 448 cities listed in Brazil, Rio de Janeiro ranks joint 202nd of 448 for the warmest July highs and joint 276th of 448 for the driest July (rainfall, lowest first). The mean July high of those 448 cities is 24.7°C; Rio de Janeiro is 0.2°C warmer than that mean.
From July to August, average highs rise by 0.9°C to 25.9°C, and monthly rainfall falls from 51 mm to 41 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Rio de Janeiro climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.7°C23.5°C | 23.5°C | 170 | 16.4 | 13.413 h |
| February | 31.2°C23.6°C | 23.6°C | 118 | 13.3 | 12.913 h |
| March | 29.6°C23.0°C | 23.0°C | 145 | 16.7 | 12.212 h |
| April | 28.0°C21.4°C | 21.4°C | 88 | 12.0 | 11.612 h |
| May | 25.6°C19.0°C | 19.0°C | 76 | 11.1 | 11.011 h |
| June | 25.2°C17.8°C | 17.8°C | 48 | 7.3 | 10.811 h |
| July, selected | 24.9°C17.1°C | 17.1°C | 51 | 7.9 | 10.911 h |
| August | 25.9°C17.5°C | 17.5°C | 41 | 7.5 | 11.311 h |
| September | 26.8°C18.6°C | 18.6°C | 75 | 10.5 | 11.912 h |
| October | 28.0°C20.0°C | 20.0°C | 92 | 11.7 | 12.613 h |
| November | 28.0°C21.0°C | 21.0°C | 139 | 15.8 | 13.213 h |
| December | 29.7°C22.6°C | 22.6°C | 151 | 16.2 | 13.514 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- São Gonçalo in JulyBrazil · 16 kmHigh 24.3°C · Low 16.4°C · 49 mm rain
- Duque de Caxias in JulyBrazil · 19 kmHigh 25.1°C · Low 16.1°C · 47 mm rain
- Barra da Tijuca in JulyBrazil · 21 kmHigh 25.5°C · Low 17.0°C · 51 mm rain
- Belford Roxo in JulyBrazil · 27 kmHigh 25.3°C · Low 16.3°C · 34 mm rain
- Magé in JulyBrazil · 32 kmHigh 24.4°C · Low 15.6°C · 49 mm rain
- Nova Iguaçu in JulyBrazil · 32 kmHigh 25.3°C · Low 15.9°C · 34 mm rain
- Maricá in JulyBrazil · 37 kmHigh 24.4°C · Low 17.9°C · 45 mm rain
- Itaboraí in JulyBrazil · 38 kmHigh 24.1°C · Low 15.4°C · 44 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Rio de Janeiro) is explained once on the Rio de Janeiro year overview and on the Sources, method and limits page.
Barra da Tijuca lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.