Climate averages 1991–2020
Rio Grande weather
in January.
A warm, moderately wet month: the 2nd warmest and the joint 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Rio Grande: daytime highs average 24.6°C and nights cool to about 21.9°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 87 mm of rain on roughly 9 days, which makes January a moderately wet month (the joint 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 59 min on an average January day.
The nearest other city in this atlas is Pelotas (37 km away). In January its highs average 26.3°C, 1.7°C warmer than Rio Grande, with 109 mm of rain.
Among the 448 cities listed in Brazil, Rio Grande ranks joint 440th of 448 for the warmest January highs and joint 58th of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; Rio Grande is 3.8°C cooler than that mean.
From January to February, average highs rise by 0.3°C to 24.9°C, and monthly rainfall falls from 87 mm to 85 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Pelotas in JanuaryBrazil · 37 kmHigh 26.3°C · Low 20.8°C · 109 mm rain
- Bagé in JanuaryBrazil · 206 kmHigh 28.4°C · Low 18.7°C · 132 mm rain
- Guaíba in JanuaryBrazil · 226 kmHigh 29.2°C · Low 20.8°C · 137 mm rain
- Cachoeira do Sul in JanuaryBrazil · 235 kmHigh 29.3°C · Low 20.1°C · 133 mm rain
- Porto Alegre in JanuaryBrazil · 238 kmHigh 29.2°C · Low 20.6°C · 137 mm rain
- Viamão in JanuaryBrazil · 240 kmHigh 28.3°C · Low 20.6°C · 140 mm rain
- Alvorada in JanuaryBrazil · 246 kmHigh 28.9°C · Low 20.7°C · 140 mm rain
- Canoas in JanuaryBrazil · 251 kmHigh 29.1°C · Low 20.5°C · 137 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.