Climate averages 1991–2020
Cacoal 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 Cacoal: daytime highs average 33.7°C and nights cool to about 21.5°C. By daytime temperature it is the warmest month of the year.
Expect about 26 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 44 min on an average August day.
The nearest other city in this atlas is Ji Paraná (83 km away). In August its highs average 33.6°C, about as warm as Cacoal, with 23 mm of rain.
Among the 448 cities listed in Brazil, Cacoal ranks joint 18th of 448 for the warmest August highs and joint 171st of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Cacoal is 7.5°C warmer than that mean.
From August to September, average highs fall by 0.3°C to 33.3°C, and monthly rainfall rises from 26 mm to 90 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
Cacoal climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.1°C22.7°C | 22.7°C | 308 | 29.3 | 12.713 h |
| February | 28.9°C22.6°C | 22.6°C | 299 | 26.6 | 12.512 h |
| March | 29.2°C22.6°C | 22.6°C | 270 | 28.2 | 12.212 h |
| April | 29.3°C22.4°C | 22.4°C | 151 | 22.3 | 11.912 h |
| May | 29.3°C21.6°C | 21.6°C | 77 | 13.4 | 11.612 h |
| June | 30.7°C20.5°C | 20.5°C | 17 | 3.5 | 11.511 h |
| July | 32.2°C20.3°C | 20.3°C | 11 | 2.1 | 11.512 h |
| August, selected | 33.7°C21.5°C | 21.5°C | 26 | 4.7 | 11.712 h |
| September | 33.3°C23.0°C | 23.0°C | 90 | 14.1 | 12.012 h |
| October | 32.0°C23.2°C | 23.2°C | 156 | 21.7 | 12.312 h |
| November | 30.3°C22.9°C | 22.9°C | 239 | 24.9 | 12.613 h |
| December | 29.4°C22.8°C | 22.8°C | 284 | 27.9 | 12.813 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
- Ji Paraná in AugustBrazil · 83 kmHigh 33.6°C · Low 21.9°C · 23 mm rain
- Vilhena in AugustBrazil · 202 kmHigh 31.0°C · Low 19.6°C · 24 mm rain
- Ariquemes in AugustBrazil · 243 kmHigh 33.9°C · Low 22.4°C · 32 mm rain
- Porto Velho in AugustBrazil · 401 kmHigh 33.0°C · Low 22.9°C · 42 mm rain
- Riberalta in AugustBolivia · 505 kmHigh 31.9°C · Low 21.8°C · 40 mm rain
- Trinidad in AugustBolivia · 531 kmHigh 30.3°C · Low 20.6°C · 50 mm rain
- Tangará da Serra in AugustBrazil · 556 kmHigh 31.3°C · Low 18.8°C · 16 mm rain
- Lucas do Rio Verde in AugustBrazil · 628 kmHigh 32.7°C · Low 20.8°C · 6.9 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 Cacoal) is explained once on the Cacoal year overview and on the Sources, method and limits page.