Climate averages 1991–2020
Parnaíba weather
in April.
A hot, very wet month: the 11th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Parnaíba: daytime highs average 29.2°C and nights cool to about 24.7°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 268 mm of rain on roughly 26 days, which makes April a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 03 min on an average April day.
The nearest other city in this atlas is Tianguá (127 km away). In April its highs average 26.4°C, 2.8°C cooler than Parnaíba, with 239 mm of rain.
Among the 448 cities listed in Brazil, Parnaíba ranks joint 67th of 448 for the warmest April highs and 415th of 448 for the driest April (rainfall, lowest first). The mean April high of those 448 cities is 27.0°C; Parnaíba is 2.2°C warmer than that mean.
From April to May, average highs rise by 0.8°C to 30.0°C, and monthly rainfall falls from 268 mm to 148 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Tianguá in AprilBrazil · 127 kmHigh 26.4°C · Low 19.8°C · 239 mm rain
- Sobral in AprilBrazil · 181 kmHigh 30.2°C · Low 23.3°C · 187 mm rain
- Chapadinha in AprilBrazil · 199 kmHigh 29.5°C · Low 22.9°C · 312 mm rain
- Itapipoca in AprilBrazil · 253 kmHigh 29.7°C · Low 23.6°C · 248 mm rain
- São José de Ribamar in AprilBrazil · 257 kmHigh 28.1°C · Low 24.6°C · 437 mm rain
- Teresina in AprilBrazil · 268 kmHigh 29.9°C · Low 23.0°C · 264 mm rain
- Caxias in AprilBrazil · 279 kmHigh 29.6°C · Low 22.9°C · 282 mm rain
- Crateús in AprilBrazil · 281 kmHigh 30.1°C · Low 22.0°C · 94 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.