Climate averages 1991–2020
Rio de Janeiro weather
in April.
A hot, moderately wet month: the joint 5th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Rio de Janeiro: daytime highs average 28.0°C and nights cool to about 21.4°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 88 mm of rain on roughly 12 days, which makes April a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 35 min on an average April day.
The nearest other city in this atlas is São Gonçalo (16 km away). In April its highs average 27.3°C, 0.6°C cooler than Rio de Janeiro, with 101 mm of rain.
Among the 448 cities listed in Brazil, Rio de Janeiro ranks joint 168th of 448 for the warmest April highs and joint 220th of 448 for the driest April (rainfall, lowest first). The mean April high of those 448 cities is 27.0°C; Rio de Janeiro is 1.0°C warmer than that mean.
From April to May, average highs fall by 2.3°C to 25.6°C, and monthly rainfall falls from 88 mm to 76 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- São Gonçalo in AprilBrazil · 16 kmHigh 27.3°C · Low 20.8°C · 101 mm rain
- Duque de Caxias in AprilBrazil · 19 kmHigh 28.1°C · Low 21.0°C · 106 mm rain
- Barra da Tijuca in AprilBrazil · 21 kmHigh 28.5°C · Low 21.7°C · 88 mm rain
- Belford Roxo in AprilBrazil · 27 kmHigh 28.3°C · Low 21.1°C · 85 mm rain
- Magé in AprilBrazil · 32 kmHigh 27.4°C · Low 20.4°C · 101 mm rain
- Nova Iguaçu in AprilBrazil · 32 kmHigh 28.2°C · Low 20.8°C · 85 mm rain
- Maricá in AprilBrazil · 37 kmHigh 27.4°C · Low 22.0°C · 78 mm rain
- Itaboraí in AprilBrazil · 38 kmHigh 27.0°C · Low 20.1°C · 108 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.