Climate averages 1991–2020
Teresina weather
in October.
A very hot, fairly dry month: the warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a very hot month in Teresina: daytime highs average 36.9°C and nights cool to about 24.5°C. By daytime temperature it is the warmest month of the year.
Expect about 15 mm of rain on roughly 2 days, which makes October a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 13 min on an average October day.
The nearest other city in this atlas is Caxias (67 km away). In October its highs average 36.3°C, 0.6°C cooler than Teresina, with 14 mm of rain.
Among the 448 cities listed in Brazil, Teresina ranks 1st of 448 for the warmest October highs and joint 38th of 448 for the driest October (rainfall, lowest first). The mean October high of those 448 cities is 28.3°C; Teresina is 8.6°C warmer than that mean.
From October to November, average highs fall by 1.2°C to 35.6°C, and monthly rainfall rises from 15 mm to 41 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Caxias in OctoberBrazil · 67 kmHigh 36.3°C · Low 24.4°C · 14 mm rain
- Codó in OctoberBrazil · 139 kmHigh 35.4°C · Low 24.7°C · 16 mm rain
- Chapadinha in OctoberBrazil · 162 kmHigh 35.5°C · Low 24.6°C · 12 mm rain
- Crateús in OctoberBrazil · 236 kmHigh 35.0°C · Low 23.1°C · 9.6 mm rain
- Bacabal in OctoberBrazil · 239 kmHigh 35.1°C · Low 25.2°C · 17 mm rain
- Tianguá in OctoberBrazil · 251 kmHigh 31.3°C · Low 20.0°C · 11 mm rain
- Picos in OctoberBrazil · 266 kmHigh 36.6°C · Low 25.9°C · 9.4 mm rain
- Parnaíba in OctoberBrazil · 268 kmHigh 33.6°C · Low 25.2°C · 5.6 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.