Climate averages 1991–2020
Alegrete weather
in September.
A mild, wet month: the 8th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Alegrete: daytime highs average 21.7°C and nights cool to about 12.1°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 155 mm of rain on roughly 10 days, which makes September a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 53 min on an average September day.
The nearest other city in this atlas is Uruguaiana (125 km away). In September its highs average 22.0°C, about as warm as Alegrete, with 126 mm of rain.
Among the 448 cities listed in Brazil, Alegrete ranks joint 405th of 448 for the warmest September highs and joint 423rd of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Alegrete is 5.8°C cooler than that mean.
From September to October, average highs rise by 2.5°C to 24.2°C, and monthly rainfall rises from 155 mm to 211 mm.
The annual picture
September 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
Alegrete climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.3°C20.8°C | 20.8°C | 143 | 11.7 | 13.814 h |
| February | 29.4°C20.4°C | 20.4°C | 134 | 10.8 | 13.113 h |
| March | 27.9°C18.7°C | 18.7°C | 123 | 9.7 | 12.312 h |
| April | 24.6°C15.7°C | 15.7°C | 162 | 9.5 | 11.411 h |
| May | 20.6°C12.4°C | 12.4°C | 121 | 8.3 | 10.611 h |
| June | 18.5°C10.4°C | 10.4°C | 134 | 9.5 | 10.310 h |
| July | 17.9°C9.3°C | 9.3°C | 124 | 9.0 | 10.410 h |
| August | 20.4°C10.6°C | 10.6°C | 109 | 8.4 | 11.011 h |
| September, selected | 21.7°C12.1°C | 12.1°C | 155 | 9.5 | 11.912 h |
| October | 24.2°C14.7°C | 14.7°C | 211 | 11.4 | 12.813 h |
| November | 26.8°C16.5°C | 16.5°C | 142 | 9.1 | 13.614 h |
| December | 29.5°C19.3°C | 19.3°C | 136 | 9.7 | 14.014 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
September in nearby cities
- Uruguaiana in SeptemberBrazil · 125 kmHigh 22.0°C · Low 12.6°C · 126 mm rain
- Sant'Ana do Livramento in SeptemberBrazil · 126 kmHigh 19.8°C · Low 10.3°C · 131 mm rain
- Rivera in SeptemberUruguay · 127 kmHigh 20.0°C · Low 10.7°C · 131 mm rain
- Santa Maria in SeptemberBrazil · 192 kmHigh 21.2°C · Low 11.4°C · 157 mm rain
- Santo Ângelo in SeptemberBrazil · 222 kmHigh 22.8°C · Low 12.9°C · 159 mm rain
- Bagé in SeptemberBrazil · 236 kmHigh 19.6°C · Low 10.4°C · 139 mm rain
- Ijuí in SeptemberBrazil · 239 kmHigh 22.5°C · Low 12.8°C · 157 mm rain
- Santa Rosa, Brazil in SeptemberBrazil · 248 kmHigh 23.4°C · Low 13.8°C · 152 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 Alegrete) is explained once on the Alegrete year overview and on the Sources, method and limits page.