Climate averages 1991–2020
Vilhena weather
in August.
A hot, fairly dry month: the warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Vilhena: daytime highs average 31.0°C and nights cool to about 19.6°C. By daytime temperature it is the warmest month of the year.
Expect about 24 mm of rain on roughly 5 days, which makes August a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 41 min on an average August day.
The nearest other city in this atlas is Cacoal (202 km away). In August its highs average 33.7°C, 2.7°C warmer than Vilhena, with 26 mm of rain.
Among the 448 cities listed in Brazil, Vilhena ranks joint 63rd of 448 for the warmest August highs and joint 163rd of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Vilhena is 4.8°C warmer than that mean.
From August to September, average highs fall by 0.2°C to 30.8°C, and monthly rainfall rises from 24 mm to 84 mm.
The annual picture
August 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
Vilhena climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.5°C21.0°C | 21.0°C | 267 | 29.4 | 12.813 h |
| February | 27.2°C20.8°C | 20.8°C | 276 | 27.2 | 12.513 h |
| March | 27.5°C20.9°C | 20.9°C | 241 | 28.6 | 12.212 h |
| April | 27.6°C20.4°C | 20.4°C | 128 | 21.4 | 11.812 h |
| May | 27.5°C19.4°C | 19.4°C | 57 | 12.1 | 11.512 h |
| June | 28.3°C18.5°C | 18.5°C | 14 | 3.0 | 11.411 h |
| July | 29.3°C18.2°C | 18.2°C | 10 | 2.1 | 11.411 h |
| August, selected | 31.0°C19.6°C | 19.6°C | 24 | 4.8 | 11.712 h |
| September | 30.8°C20.9°C | 20.9°C | 84 | 13.5 | 12.012 h |
| October | 29.5°C21.2°C | 21.2°C | 165 | 22.4 | 12.412 h |
| November | 28.2°C21.1°C | 21.1°C | 207 | 25.5 | 12.713 h |
| December | 27.7°C21.1°C | 21.1°C | 259 | 28.2 | 12.913 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
August in nearby cities
- Cacoal in AugustBrazil · 202 kmHigh 33.7°C · Low 21.5°C · 26 mm rain
- Ji Paraná in AugustBrazil · 285 kmHigh 33.6°C · Low 21.9°C · 23 mm rain
- Tangará da Serra in AugustBrazil · 355 kmHigh 31.3°C · Low 18.8°C · 16 mm rain
- Ariquemes in AugustBrazil · 445 kmHigh 33.9°C · Low 22.4°C · 32 mm rain
- Cáceres, Brazil in AugustBrazil · 456 kmHigh 32.6°C · Low 20.8°C · 10 mm rain
- Lucas do Rio Verde in AugustBrazil · 460 kmHigh 32.7°C · Low 20.8°C · 6.9 mm rain
- Sorriso in AugustBrazil · 482 kmHigh 33.3°C · Low 20.9°C · 6.6 mm rain
- Sinop in AugustBrazil · 514 kmHigh 33.5°C · Low 20.6°C · 6.6 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 Vilhena) is explained once on the Vilhena year overview and on the Sources, method and limits page.