Climate averages 1991–2020
Parnaíba weather
in August.
A hot, very dry month: the 3rd warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Parnaíba: daytime highs average 33.4°C and nights cool to about 24.8°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 2.6 mm of rain on fewer than one day, which makes August a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 01 min on an average August day.
The nearest other city in this atlas is Tianguá (127 km away). In August its highs average 29.6°C, 3.8°C cooler than Parnaíba, with 3.4 mm of rain.
Among the 448 cities listed in Brazil, Parnaíba ranks joint 25th of 448 for the warmest August highs and 19th of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Parnaíba is 7.2°C warmer than that mean.
From August to September, average highs rise by 0.4°C to 33.8°C, and monthly rainfall falls from 2.6 mm to 1.1 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
Parnaíba climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.1°C24.9°C | 24.9°C | 129 | 20.0 | 12.312 h |
| February | 29.4°C24.7°C | 24.7°C | 172 | 23.3 | 12.212 h |
| March | 29.1°C24.6°C | 24.6°C | 265 | 27.7 | 12.112 h |
| April | 29.2°C24.7°C | 24.7°C | 268 | 25.9 | 12.012 h |
| May | 30.0°C24.9°C | 24.9°C | 148 | 17.9 | 12.012 h |
| June | 31.0°C24.9°C | 24.9°C | 31 | 7.0 | 12.012 h |
| July | 32.2°C24.8°C | 24.8°C | 16 | 2.7 | 12.012 h |
| August, selected | 33.4°C24.8°C | 24.8°C | 2.6 | 0.5 | 12.012 h |
| September | 33.8°C25.0°C | 25.0°C | 1.1 | 0.2 | 12.112 h |
| October | 33.6°C25.2°C | 25.2°C | 5.6 | 0.7 | 12.212 h |
| November | 33.1°C25.5°C | 25.5°C | 7.4 | 1.6 | 12.212 h |
| December | 32.1°C25.5°C | 25.5°C | 35 | 7.1 | 12.312 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
- Tianguá in AugustBrazil · 127 kmHigh 29.6°C · Low 19.2°C · 3.4 mm rain
- Sobral in AugustBrazil · 181 kmHigh 34.4°C · Low 23.3°C · 3.9 mm rain
- Chapadinha in AugustBrazil · 199 kmHigh 33.6°C · Low 23.6°C · 3.8 mm rain
- Itapipoca in AugustBrazil · 253 kmHigh 33.5°C · Low 23.7°C · 4.7 mm rain
- São José de Ribamar in AugustBrazil · 257 kmHigh 29.8°C · Low 25.6°C · 25 mm rain
- Teresina in AugustBrazil · 268 kmHigh 35.0°C · Low 23.5°C · 2.1 mm rain
- Caxias in AugustBrazil · 279 kmHigh 34.8°C · Low 23.3°C · 3.0 mm rain
- Crateús in AugustBrazil · 281 kmHigh 32.9°C · Low 21.8°C · 2.2 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 Parnaíba) is explained once on the Parnaíba year overview and on the Sources, method and limits page.