Teresina climate
Teresina (Piauí, Brazil) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 29 °C83 °F, and about 1,201 mm47 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Teresina climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3290 | 2374 | 2882 | 1847.2 |
| Feb | 3087 | 2373 | 2780 | 2278.9 |
| Mar | 3086 | 2373 | 2680 | 26110 |
| Apr | 3085 | 2373 | 2679 | 2399.4 |
| May | 3187 | 2373 | 2780 | 1064.2 |
| Jun | 3290 | 2272 | 2781 | 240.9 |
| Jul | 3492 | 2373 | 2883 | 100.4 |
| Aug | 3696 | 2374 | 3085 | 60.3 |
| Sep | 38100 | 2476 | 3188 | 70.3 |
| Oct | 38101 | 2577 | 3289 | 210.8 |
| Nov | 3799 | 2577 | 3188 | 391.5 |
| Dec | 3595 | 2576 | 3086 | 773.0 |
| Year | 38101 | 2272 | 2983 | 1,20147 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 74% | 74% | 5.4 | 12:23 |
| Feb | 83% | 78% | 5.4 | 12:17 |
| Mar | 86% | 77% | 5.5 | 12:09 |
| Apr | 87% | 73% | 5.3 | 12:00 |
| May | 81% | 53% | 5.4 | 11:53 |
| Jun | 68% | 37% | 5.5 | 11:50 |
| Jul | 56% | 29% | 5.8 | 11:51 |
| Aug | 47% | 24% | 6.5 | 11:57 |
| Sep | 44% | 30% | 6.8 | 12:05 |
| Oct | 46% | 43% | 6.6 | 12:14 |
| Nov | 51% | 53% | 6.1 | 12:21 |
| Dec | 59% | 63% | 5.7 | 12:25 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Teresina is like
The warmest month is October, with an average high of 38 °C101 °F and a low of 25 °C77 °F. The coldest is April, when highs average 30 °C85 °F and lows 23 °C73 °F. Seasonal differences are small — just 5.4 °C9.7 °F between the warmest and the coolest month.
It is wet, with about 1,201 mm47 in of precipitation per year. The wettest three-month stretch is February–April, which brings 61% of the annual total. Months with less than 20 mm0.8 in on average: July–September. The wettest month is March (261 mm10 in), the driest is August (6 mm0.3 in).
Relative humidity ranges from 44% in September to 87% in April. The clearest skies (lowest average cloud amount, 24%) are typical of August. Average wind speed near the ground ranges from 3 km/h (2 mph) in April to 6 km/h (4 mph) in October.
Best time to visit Teresina
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June: average highs of 32 °C90 °F to 32 °C90 °F with 24 mm0.9 in to 24 mm0.9 in of precipitation per month.
The most challenging month is March, which is very wet (261 mm10 in) and humid (86% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Teresina
- Wetter months (January–May) — highs 3085 to 32 °C90 °F, lows around 23 °C73 °F, about 203 mm8.0 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (June–December) — highs 3290 to 38 °C101 °F, lows 2272 to 25 °C77 °F, about 26 mm1.0 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Teresina compares
Compared with São Luís, about 330 km to the northwest, Teresina is on average 1.4 °C2.6 °F warmer and receives 30% less precipitation (1,201 mm47 in vs 1,717 mm68 in). The difference is largest in October (3.6 °C6.4 °F warmer).
Of the 223 places in Brazil covered by World Climates, Teresina is the warmest by annual mean temperature and the 167th wettest by annual precipitation. See all of them on the Brazil climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Hòa Thành (Vietnam, Aw), Hồng Ngự (Vietnam, Aw) and Trảng Bàng (Vietnam, Aw).
Nearby places
- Timon 4 km · 28 °C83 °F · 1,278 mm50 in
- Caxias 67 km · 28 °C83 °F · 1,278 mm50 in
- Codó 139 km · 28 °C82 °F · 1,381 mm54 in
- Bacabal 239 km · 28 °C82 °F · 1,513 mm60 in
- Parnaíba 268 km · 28 °C82 °F · 1,102 mm43 in
- Sobral 313 km · 28 °C82 °F · 958 mm38 in
- São José de Ribamar 314 km · 27 °C81 °F · 1,511 mm60 in
- São Luís 330 km · 27 °C81 °F · 1,717 mm68 in
Frequently asked questions
What is the warmest month in Teresina?
October is the warmest month in Teresina, with an average high of 38 °C (101 °F) and an average low of 25 °C (77 °F).
What is the coldest month in Teresina?
April is the coldest month, with an average high of 30 °C (85 °F) and an average low of 23 °C (73 °F).
When does it rain the most in Teresina?
March is the wettest month with about 261 mm (10.3 in) of precipitation; August is the driest with about 6 mm (0.3 in).
What is the best time to visit Teresina?
Judging by long-term averages, the most comfortable months are June.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.