Climate averages 1991–2020
Parnaíba weather
in January.
A hot, wet month: the 8th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Parnaíba: daytime highs average 30.1°C and nights cool to about 24.9°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 129 mm of rain on roughly 20 days, which makes January a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 16 min on an average January day.
The nearest other city in this atlas is Tianguá (127 km away). In January its highs average 28.0°C, 2.1°C cooler than Parnaíba, with 141 mm of rain.
Among the 448 cities listed in Brazil, Parnaíba ranks joint 78th of 448 for the warmest January highs and joint 94th of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; Parnaíba is 1.7°C warmer than that mean.
From January to February, average highs fall by 0.8°C to 29.4°C, and monthly rainfall rises from 129 mm to 172 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Tianguá in JanuaryBrazil · 127 kmHigh 28.0°C · Low 20.1°C · 141 mm rain
- Sobral in JanuaryBrazil · 181 kmHigh 32.4°C · Low 23.9°C · 95 mm rain
- Chapadinha in JanuaryBrazil · 199 kmHigh 31.0°C · Low 23.5°C · 198 mm rain
- Itapipoca in JanuaryBrazil · 253 kmHigh 31.2°C · Low 24.1°C · 113 mm rain
- São José de Ribamar in JanuaryBrazil · 257 kmHigh 28.4°C · Low 25.0°C · 229 mm rain
- Teresina in JanuaryBrazil · 268 kmHigh 31.0°C · Low 23.2°C · 235 mm rain
- Caxias in JanuaryBrazil · 279 kmHigh 30.4°C · Low 23.1°C · 236 mm rain
- Crateús in JanuaryBrazil · 281 kmHigh 32.3°C · Low 22.9°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.