Climate averages 1991–2020
Parnaíba weather
in July.
A hot, fairly dry month: the 5th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Parnaíba: daytime highs average 32.2°C and nights cool to about 24.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 16 mm of rain on roughly 3 days, which makes July a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 58 min on an average July day.
The nearest other city in this atlas is Tianguá (127 km away). In July its highs average 28.1°C, 4.1°C cooler than Parnaíba, with 9.2 mm of rain.
Among the 448 cities listed in Brazil, Parnaíba ranks joint 18th of 448 for the warmest July highs and joint 128th of 448 for the driest July (rainfall, lowest first). The mean July high of those 448 cities is 24.7°C; Parnaíba is 7.5°C warmer than that mean.
From July to August, average highs rise by 1.2°C to 33.4°C, and monthly rainfall falls from 16 mm to 2.6 mm.
The annual picture
July 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, selected | 32.2°C24.8°C | 24.8°C | 16 | 2.7 | 12.012 h |
| August | 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
July in nearby cities
- Tianguá in JulyBrazil · 127 kmHigh 28.1°C · Low 19.1°C · 9.2 mm rain
- Sobral in JulyBrazil · 181 kmHigh 32.9°C · Low 22.9°C · 14 mm rain
- Chapadinha in JulyBrazil · 199 kmHigh 31.8°C · Low 23.0°C · 23 mm rain
- Itapipoca in JulyBrazil · 253 kmHigh 31.8°C · Low 23.4°C · 18 mm rain
- São José de Ribamar in JulyBrazil · 257 kmHigh 29.1°C · Low 25.2°C · 94 mm rain
- Teresina in JulyBrazil · 268 kmHigh 33.5°C · Low 23.2°C · 8.7 mm rain
- Caxias in JulyBrazil · 279 kmHigh 33.3°C · Low 23.1°C · 10 mm rain
- Crateús in JulyBrazil · 281 kmHigh 31.5°C · Low 21.4°C · 8.4 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.