Climate averages 1991–2020
Açailândia weather
by month.
See how the year changes. September has the highest average daily maximum; August has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Açailândia averages a daytime high of 30.5°C and a nighttime low of 22.3°C, with about 1,477 mm of rain on roughly 173 days. September is the warmest month (average high 33.6°C) and March the coolest (28.2°C). March is the wettest month with 300 mm; August is the driest with 3.5 mm.
The annual picture
A year in Açailândia
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
Açailândia climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.5°C22.0°C | 22.0°C | 255 | 27.4 | 12.412 h |
| February | 28.3°C21.9°C | 21.9°C | 262 | 25.4 | 12.312 h |
| March | 28.2°C22.0°C | 22.0°C | 300 | 28.8 | 12.112 h |
| April | 28.4°C22.0°C | 22.0°C | 210 | 24.6 | 12.012 h |
| May | 29.1°C21.9°C | 21.9°C | 102 | 14.9 | 11.912 h |
| June | 30.6°C21.6°C | 21.6°C | 15 | 3.3 | 11.812 h |
| July | 31.9°C21.6°C | 21.6°C | 8.6 | 1.7 | 11.912 h |
| August | 33.2°C22.1°C | 22.1°C | 3.5 | 0.7 | 12.012 h |
| September | 33.6°C22.9°C | 22.9°C | 14 | 2.8 | 12.112 h |
| October | 33.0°C23.4°C | 23.4°C | 41 | 7.1 | 12.212 h |
| November | 31.5°C23.1°C | 23.1°C | 101 | 14.5 | 12.312 h |
| December | 30.0°C22.6°C | 22.6°C | 165 | 21.4 | 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
Nearby cities
- ImperatrizBrazil · 64 kmHigh 31.4°C · Low 23.5°C · 1,160 mm rain a year
- GrajaúBrazil · 180 kmHigh 31.3°C · Low 22.8°C · 1,002 mm rain a year
- MarabáBrazil · 187 kmHigh 30.8°C · Low 23.3°C · 1,686 mm rain a year
- ParagominasBrazil · 218 kmHigh 31.4°C · Low 23.1°C · 1,704 mm rain a year
- Barra do CordaBrazil · 258 kmHigh 31.5°C · Low 23.1°C · 1,176 mm rain a year
- AraguaínaBrazil · 261 kmHigh 31.0°C · Low 22.1°C · 1,692 mm rain a year
- TailândiaBrazil · 274 kmHigh 31.4°C · Low 23.3°C · 1,928 mm rain a year
- TucuruíBrazil · 275 kmHigh 30.7°C · Low 24.3°C · 2,088 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-3, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at -4.90°, -47.50° (5 km from the city centre). Rain comes from the 0.25° cell at -5.00°, -47.50°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.