Climate averages 1991–2020
Grajaú weather
in August.
A hot, very dry month: the 3rd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Grajaú: daytime highs average 33.7°C and nights cool to about 22.6°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 1.9 mm of rain on fewer than one day, which makes August a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 55 min on an average August day.
The nearest other city in this atlas is Barra do Corda (105 km away). In August its highs average 34.0°C, about as warm as Grajaú, with 2.5 mm of rain.
Among the 448 cities listed in Brazil, Grajaú ranks joint 18th of 448 for the warmest August highs and joint 13th of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Grajaú is 7.5°C warmer than that mean.
From August to September, average highs rise by 0.6°C to 34.4°C, and monthly rainfall rises from 1.9 mm to 8.9 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
Grajaú climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.3°C22.6°C | 22.6°C | 172 | 24.7 | 12.412 h |
| February | 29.2°C22.6°C | 22.6°C | 177 | 24.0 | 12.312 h |
| March | 29.2°C22.6°C | 22.6°C | 188 | 26.1 | 12.112 h |
| April | 29.5°C22.6°C | 22.6°C | 132 | 20.4 | 12.012 h |
| May | 30.1°C22.3°C | 22.3°C | 64 | 10.5 | 11.912 h |
| June | 31.5°C22.1°C | 22.1°C | 8.4 | 1.6 | 11.812 h |
| July | 32.5°C22.2°C | 22.2°C | 4.7 | 0.8 | 11.812 h |
| August, selected | 33.7°C22.6°C | 22.6°C | 1.9 | 0.3 | 11.912 h |
| September | 34.4°C23.5°C | 23.5°C | 8.9 | 1.7 | 12.112 h |
| October | 33.8°C24.1°C | 24.1°C | 32 | 5.3 | 12.212 h |
| November | 32.1°C23.7°C | 23.7°C | 78 | 11.9 | 12.412 h |
| December | 30.7°C23.2°C | 23.2°C | 135 | 17.8 | 12.512 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
- Barra do Corda in AugustBrazil · 105 kmHigh 34.0°C · Low 23.0°C · 2.5 mm rain
- Imperatriz in AugustBrazil · 153 kmHigh 34.3°C · Low 23.7°C · 2.1 mm rain
- Açailândia in AugustBrazil · 180 kmHigh 33.2°C · Low 22.1°C · 3.5 mm rain
- Balsas in AugustBrazil · 191 kmHigh 33.9°C · Low 22.7°C · 0.9 mm rain
- Bacabal in AugustBrazil · 232 kmHigh 33.9°C · Low 23.9°C · 5.4 mm rain
- Santa Inês in AugustBrazil · 254 kmHigh 33.0°C · Low 23.6°C · 11 mm rain
- Araguaína in AugustBrazil · 275 kmHigh 34.0°C · Low 21.3°C · 3.0 mm rain
- Codó in AugustBrazil · 292 kmHigh 34.0°C · Low 23.5°C · 3.7 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 Grajaú) is explained once on the Grajaú year overview and on the Sources, method and limits page.