Climate averages 1991–2020
Rio Grande weather
in April.
A mild, wet month: the 5th warmest and the joint 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Rio Grande: daytime highs average 21.7°C and nights cool to about 18.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 112 mm of rain on roughly 10 days, which makes April a wet month (the joint 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 19 min on an average April day.
The nearest other city in this atlas is Pelotas (37 km away). In April its highs average 22.6°C, 0.9°C warmer than Rio Grande, with 116 mm of rain.
Among the 448 cities listed in Brazil, Rio Grande ranks 445th of 448 for the warmest April highs and joint 308th of 448 for the driest April (rainfall, lowest first). The mean April high of those 448 cities is 27.0°C; Rio Grande is 5.3°C cooler than that mean.
From April to May, average highs fall by 3.1°C to 18.6°C, and monthly rainfall falls from 112 mm to 104 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 Grande climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.6°C21.9°C | 21.9°C | 87 | 8.6 | 14.014 h |
| February | 24.9°C22.3°C | 22.3°C | 85 | 9.8 | 13.213 h |
| March | 24.0°C21.4°C | 21.4°C | 92 | 9.9 | 12.312 h |
| April, selected | 21.7°C18.8°C | 18.8°C | 112 | 10.1 | 11.311 h |
| May | 18.6°C15.8°C | 15.8°C | 104 | 9.8 | 10.511 h |
| June | 16.1°C13.0°C | 13.0°C | 110 | 9.7 | 10.110 h |
| July | 15.0°C11.7°C | 11.7°C | 112 | 10.1 | 10.310 h |
| August | 15.8°C12.5°C | 12.5°C | 108 | 9.6 | 11.011 h |
| September | 16.7°C13.7°C | 13.7°C | 125 | 10.2 | 11.912 h |
| October | 18.9°C16.1°C | 16.1°C | 129 | 10.1 | 12.913 h |
| November | 21.0°C18.0°C | 18.0°C | 87 | 7.7 | 13.714 h |
| December | 23.2°C20.2°C | 20.2°C | 86 | 8.0 | 14.214 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
- Pelotas in AprilBrazil · 37 kmHigh 22.6°C · Low 17.0°C · 116 mm rain
- Bagé in AprilBrazil · 206 kmHigh 23.0°C · Low 14.4°C · 127 mm rain
- Guaíba in AprilBrazil · 226 kmHigh 24.9°C · Low 16.7°C · 106 mm rain
- Cachoeira do Sul in AprilBrazil · 235 kmHigh 24.5°C · Low 15.7°C · 125 mm rain
- Porto Alegre in AprilBrazil · 238 kmHigh 24.9°C · Low 16.5°C · 106 mm rain
- Viamão in AprilBrazil · 240 kmHigh 24.2°C · Low 16.7°C · 102 mm rain
- Alvorada in AprilBrazil · 246 kmHigh 24.8°C · Low 16.7°C · 102 mm rain
- Canoas in AprilBrazil · 251 kmHigh 24.8°C · Low 16.5°C · 106 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 Grande) is explained once on the Rio Grande year overview and on the Sources, method and limits page.