Climate averages 1991–2020
Cacoal weather
in October.
A hot, wet month: the 4th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a hot month in Cacoal: daytime highs average 32.0°C and nights cool to about 23.2°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 156 mm of rain on roughly 22 days, which makes October a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 21 min on an average October day.
The nearest other city in this atlas is Ji Paraná (83 km away). In October its highs average 32.1°C, about as warm as Cacoal, with 143 mm of rain.
Among the 448 cities listed in Brazil, Cacoal ranks joint 70th of 448 for the warmest October highs and 386th of 448 for the driest October (rainfall, lowest first). The mean October high of those 448 cities is 28.3°C; Cacoal is 3.8°C warmer than that mean.
From October to November, average highs fall by 1.8°C to 30.3°C, and monthly rainfall rises from 156 mm to 239 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Ji Paraná in OctoberBrazil · 83 kmHigh 32.1°C · Low 23.3°C · 143 mm rain
- Vilhena in OctoberBrazil · 202 kmHigh 29.5°C · Low 21.2°C · 165 mm rain
- Ariquemes in OctoberBrazil · 243 kmHigh 32.1°C · Low 23.3°C · 142 mm rain
- Porto Velho in OctoberBrazil · 401 kmHigh 31.7°C · Low 23.9°C · 178 mm rain
- Riberalta in OctoberBolivia · 505 kmHigh 31.4°C · Low 23.6°C · 159 mm rain
- Trinidad in OctoberBolivia · 531 kmHigh 31.0°C · Low 23.3°C · 161 mm rain
- Tangará da Serra in OctoberBrazil · 556 kmHigh 31.5°C · Low 22.4°C · 120 mm rain
- Lucas do Rio Verde in OctoberBrazil · 628 kmHigh 31.7°C · Low 22.7°C · 126 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.