Climate averages 1991–2020
Teresina weather
in January.
A hot, very wet month: the 8th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Teresina: daytime highs average 31.0°C and nights cool to about 23.2°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 235 mm of rain on roughly 23 days, which makes January a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 23 min on an average January day.
The nearest other city in this atlas is Caxias (67 km away). In January its highs average 30.4°C, 0.5°C cooler than Teresina, with 236 mm of rain.
Among the 448 cities listed in Brazil, Teresina ranks joint 32nd of 448 for the warmest January highs and joint 266th of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; Teresina is 2.5°C warmer than that mean.
From January to February, average highs fall by 0.8°C to 30.2°C, and monthly rainfall rises from 235 mm to 283 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
Teresina climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 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 | 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
January in nearby cities
- Caxias in JanuaryBrazil · 67 kmHigh 30.4°C · Low 23.1°C · 236 mm rain
- Codó in JanuaryBrazil · 139 kmHigh 30.4°C · Low 23.2°C · 226 mm rain
- Chapadinha in JanuaryBrazil · 162 kmHigh 31.0°C · Low 23.5°C · 198 mm rain
- Crateús in JanuaryBrazil · 236 kmHigh 32.3°C · Low 22.9°C · 94 mm rain
- Bacabal in JanuaryBrazil · 239 kmHigh 30.3°C · Low 23.5°C · 249 mm rain
- Tianguá in JanuaryBrazil · 251 kmHigh 28.0°C · Low 20.1°C · 141 mm rain
- Picos in JanuaryBrazil · 266 kmHigh 32.1°C · Low 24.2°C · 141 mm rain
- Parnaíba in JanuaryBrazil · 268 kmHigh 30.1°C · Low 24.9°C · 129 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.