Climate averages 1991–2020
Teresina weather
in May.
A hot, wet month: the 9th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Teresina: daytime highs average 30.9°C and nights cool to about 23.1°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 124 mm of rain on roughly 13 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 53 min on an average May day.
The nearest other city in this atlas is Caxias (67 km away). In May its highs average 30.5°C, about as warm as Teresina, with 128 mm of rain.
Among the 448 cities listed in Brazil, Teresina ranks joint 10th of 448 for the warmest May highs and 360th of 448 for the driest May (rainfall, lowest first). The mean May high of those 448 cities is 25.3°C; Teresina is 5.6°C warmer than that mean.
From May to June, average highs rise by 1.7°C to 32.6°C, and monthly rainfall falls from 124 mm to 16 mm.
The annual picture
May 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 | 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, selected | 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
May in nearby cities
- Caxias in MayBrazil · 67 kmHigh 30.5°C · Low 23.0°C · 128 mm rain
- Codó in MayBrazil · 139 kmHigh 30.0°C · Low 23.1°C · 121 mm rain
- Chapadinha in MayBrazil · 162 kmHigh 29.9°C · Low 23.0°C · 175 mm rain
- Crateús in MayBrazil · 236 kmHigh 30.5°C · Low 21.8°C · 44 mm rain
- Bacabal in MayBrazil · 239 kmHigh 30.0°C · Low 23.5°C · 130 mm rain
- Tianguá in MayBrazil · 251 kmHigh 26.8°C · Low 19.7°C · 96 mm rain
- Picos in MayBrazil · 266 kmHigh 32.5°C · Low 23.8°C · 30 mm rain
- Parnaíba in MayBrazil · 268 kmHigh 30.0°C · Low 24.9°C · 148 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.