Climate averages 1991–2020
Teresina weather
in August.
A very hot, very dry month: the 4th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a very hot month in Teresina: daytime highs average 35.0°C and nights cool to about 23.5°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 2.1 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 57 min on an average August day.
The nearest other city in this atlas is Caxias (67 km away). In August its highs average 34.8°C, about as warm as Teresina, with 3.0 mm of rain.
Among the 448 cities listed in Brazil, Teresina ranks 1st of 448 for the warmest August highs and joint 15th of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Teresina is 8.8°C warmer than that mean.
From August to September, average highs rise by 1.5°C to 36.5°C, and monthly rainfall rises from 2.1 mm to 3.3 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
Teresina climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.0°C23.2°C | 23.2°C | 235 | 22.5 | 12.412 h |
| February | 30.2°C22.9°C | 22.9°C | 283 | 22.8 | 12.312 h |
| March | 29.9°C22.9°C | 22.9°C | 328 | 26.9 | 12.112 h |
| April | 29.9°C23.0°C | 23.0°C | 264 | 23.3 | 12.012 h |
| May | 30.9°C23.1°C | 23.1°C | 124 | 12.7 | 11.912 h |
| June | 32.6°C23.2°C | 23.2°C | 16 | 2.9 | 11.812 h |
| July | 33.5°C23.2°C | 23.2°C | 8.7 | 1.5 | 11.912 h |
| August, selected | 35.0°C23.5°C | 23.5°C | 2.1 | 0.5 | 11.912 h |
| September | 36.5°C24.1°C | 24.1°C | 3.3 | 0.9 | 12.112 h |
| October | 36.9°C24.5°C | 24.5°C | 15 | 2.0 | 12.212 h |
| November | 35.6°C24.6°C | 24.6°C | 41 | 5.8 | 12.312 h |
| December | 33.8°C24.2°C | 24.2°C | 93 | 11.4 | 12.412 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
- Caxias in AugustBrazil · 67 kmHigh 34.8°C · Low 23.3°C · 3.0 mm rain
- Codó in AugustBrazil · 139 kmHigh 34.0°C · Low 23.5°C · 3.7 mm rain
- Chapadinha in AugustBrazil · 162 kmHigh 33.6°C · Low 23.6°C · 3.8 mm rain
- Crateús in AugustBrazil · 236 kmHigh 32.9°C · Low 21.8°C · 2.2 mm rain
- Bacabal in AugustBrazil · 239 kmHigh 33.9°C · Low 23.9°C · 5.4 mm rain
- Tianguá in AugustBrazil · 251 kmHigh 29.6°C · Low 19.2°C · 3.4 mm rain
- Picos in AugustBrazil · 266 kmHigh 33.9°C · Low 22.6°C · 0.7 mm rain
- Parnaíba in AugustBrazil · 268 kmHigh 33.4°C · Low 24.8°C · 2.6 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 Teresina) is explained once on the Teresina year overview and on the Sources, method and limits page.