Açailândia climate
Açailândia (Maranhão, Brazil) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 27 °C80 °F, and about 1,392 mm55 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Açailândia climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2985 | 2272 | 2678 | 1977.8 |
| Feb | 2983 | 2271 | 2577 | 2409.5 |
| Mar | 2983 | 2272 | 2577 | 26210 |
| Apr | 2984 | 2272 | 2578 | 2098.2 |
| May | 2984 | 2272 | 2678 | 943.7 |
| Jun | 3086 | 2170 | 2678 | 190.7 |
| Jul | 3189 | 2169 | 2679 | 110.4 |
| Aug | 3494 | 2271 | 2882 | 90.3 |
| Sep | 3696 | 2374 | 3085 | 321.3 |
| Oct | 3595 | 2475 | 2985 | 652.6 |
| Nov | 3392 | 2374 | 2883 | 1074.2 |
| Dec | 3188 | 2373 | 2780 | 1485.8 |
| Year | 3696 | 2169 | 2780 | 1,39255 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 84% | 82% | 4.9 | 12:23 |
| Feb | 87% | 85% | 4.9 | 12:16 |
| Mar | 88% | 85% | 5.0 | 12:09 |
| Apr | 88% | 80% | 5.0 | 12:00 |
| May | 86% | 62% | 5.0 | 11:54 |
| Jun | 80% | 41% | 5.3 | 11:50 |
| Jul | 71% | 33% | 5.5 | 11:52 |
| Aug | 59% | 35% | 5.7 | 11:57 |
| Sep | 55% | 45% | 5.6 | 12:05 |
| Oct | 60% | 60% | 5.3 | 12:13 |
| Nov | 69% | 71% | 5.0 | 12:21 |
| Dec | 77% | 77% | 4.8 | 12:24 |
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 Açailândia is like
The warmest month is September, with an average high of 36 °C96 °F and a low of 23 °C74 °F. The coldest is February, when highs average 29 °C83 °F and lows 22 °C71 °F. Seasonal differences are small — just 4.4 °C7.8 °F between the warmest and the coolest month.
It is wet, with about 1,392 mm55 in of precipitation per year. The wettest three-month stretch is February–April, which brings 51% of the annual total. Months with less than 20 mm0.8 in on average: June–August. The wettest month is March (262 mm10 in), the driest is August (9 mm0.3 in).
Relative humidity ranges from 55% in September to 88% in April. The clearest skies (lowest average cloud amount, 33%) are typical of July. Average wind speed near the ground ranges from 3 km/h (2 mph) in April to 4 km/h (3 mph) in September.
Best time to visit Açailândia
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June and July: average highs of 30 °C86 °F to 31 °C89 °F with 11 mm0.4 in to 19 mm0.7 in of precipitation per month.
The most challenging month is March, which is very wet (262 mm10 in) and humid (88% 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 Açailândia
- Wetter months (December–April) — highs 2983 to 31 °C88 °F, lows 2271 to 23 °C73 °F, about 211 mm8.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (May–November) — highs 2984 to 36 °C96 °F, lows 2169 to 24 °C75 °F, about 48 mm1.9 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Açailândia compares
Compared with Imperatriz, about 64 km to the south, Açailândia is on average 1.2 °C2.1 °F cooler and receives 6% more precipitation (1,392 mm55 in vs 1,315 mm52 in). The difference is largest in July (1.6 °C2.9 °F cooler).
Of the 223 places in Brazil covered by World Climates, Açailândia is the 38th warmest by annual mean temperature and the 80th 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): Malappuram (India, Aw), Cần Thơ (Vietnam, Aw) and Ngã Bảy (Vietnam, Aw).
Nearby places
- Imperatriz 64 km · 28 °C82 °F · 1,315 mm52 in
- Marabá 187 km · 28 °C82 °F · 1,569 mm62 in
- Paragominas 218 km · 27 °C80 °F · 1,799 mm71 in
- Araguaína 261 km · 27 °C81 °F · 1,486 mm58 in
- Tucuruí 275 km · 27 °C81 °F · 1,902 mm75 in
- Parauapebas 293 km · 27 °C81 °F · 1,531 mm60 in
- Bacabal 312 km · 28 °C82 °F · 1,513 mm60 in
- Balsas 330 km · 28 °C82 °F · 1,207 mm48 in
Frequently asked questions
What is the warmest month in Açailândia?
September is the warmest month in Açailândia, with an average high of 36 °C (96 °F) and an average low of 23 °C (74 °F).
What is the coldest month in Açailândia?
February is the coldest month, with an average high of 29 °C (83 °F) and an average low of 22 °C (71 °F).
When does it rain the most in Açailândia?
March is the wettest month with about 262 mm (10.3 in) of precipitation; August is the driest with about 9 mm (0.3 in).
What is the best time to visit Açailândia?
Judging by long-term averages, the most comfortable months are June and July.
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.