Climate averages 1991–2020
Ariquemes 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 Ariquemes: daytime highs average 33.9°C and nights cool to about 22.4°C. By daytime temperature it is the warmest month of the year.
Expect about 32 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 47 min on an average August day.
The nearest other city in this atlas is Porto Velho (159 km away). In August its highs average 33.0°C, 1.0°C cooler than Ariquemes, with 42 mm of rain.
Among the 448 cities listed in Brazil, Ariquemes ranks joint 13th of 448 for the warmest August highs and joint 204th of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Ariquemes is 7.7°C warmer than that mean.
From August to September, average highs fall by 0.8°C to 33.1°C, and monthly rainfall rises from 32 mm to 86 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
Ariquemes climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.5°C22.8°C | 22.8°C | 281 | 27.6 | 12.613 h |
| February | 29.3°C22.7°C | 22.7°C | 282 | 26.3 | 12.412 h |
| March | 29.4°C22.8°C | 22.8°C | 274 | 28.1 | 12.212 h |
| April | 29.4°C22.7°C | 22.7°C | 185 | 23.8 | 11.912 h |
| May | 29.3°C22.2°C | 22.2°C | 91 | 15.7 | 11.712 h |
| June | 30.7°C21.5°C | 21.5°C | 20 | 4.4 | 11.612 h |
| July | 32.7°C21.5°C | 21.5°C | 13 | 2.5 | 11.612 h |
| August, selected | 33.9°C22.4°C | 22.4°C | 32 | 5.3 | 11.812 h |
| September | 33.1°C23.3°C | 23.3°C | 86 | 13.9 | 12.012 h |
| October | 32.1°C23.3°C | 23.3°C | 142 | 20.1 | 12.312 h |
| November | 30.4°C23.1°C | 23.1°C | 208 | 23.2 | 12.613 h |
| December | 29.8°C22.9°C | 22.9°C | 246 | 26.8 | 12.713 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
- Porto Velho in AugustBrazil · 159 kmHigh 33.0°C · Low 22.9°C · 42 mm rain
- Ji Paraná in AugustBrazil · 161 kmHigh 33.6°C · Low 21.9°C · 23 mm rain
- Cacoal in AugustBrazil · 243 kmHigh 33.7°C · Low 21.5°C · 26 mm rain
- Riberalta in AugustBolivia · 351 kmHigh 31.9°C · Low 21.8°C · 40 mm rain
- Vilhena in AugustBrazil · 445 kmHigh 31.0°C · Low 19.6°C · 24 mm rain
- Rio Branco in AugustBrazil · 522 kmHigh 32.1°C · Low 21.4°C · 38 mm rain
- Trinidad in AugustBolivia · 583 kmHigh 30.3°C · Low 20.6°C · 50 mm rain
- Coari in AugustBrazil · 648 kmHigh 29.9°C · Low 24.3°C · 96 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 Ariquemes) is explained once on the Ariquemes year overview and on the Sources, method and limits page.