Climate Overview
The climate in Açailândia is hot. The average annual temperature is 27°C and approximately 1411mm of precipitation falls per year. March is the wettest month, receiving around 303mm of rainfall. Açailândia sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Açailândia sees moderate temperature variation throughout the year, ranging from 21°C to 34°C. The warmest month is September, when average highs reach 34°C and the mean temperature sits around 28°C. July is the coolest month, with minimum temperatures around 21°C and an average of 27°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.
Precipitation
Açailândia is a fairly wet location, receiving approximately 1411mm of precipitation annually, which averages out to around 118mm per month. The wettest month is March, averaging 303mm of rainfall. February and January also tend to see above-average precipitation. The driest month is August, with just 4mm. That's 299mm less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Açailândia is mildly breezy, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 15km/h in winter, 13km/h in spring, 11km/h in summer, 11km/h in autumn.
Seasons
89 days until Winter
It is currently autumn in Açailândia, which began on March 20, 2026. Açailândia sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in September at around 34°C, while the coldest stretch bottoms out in July near 21°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 23 to 34°C. Rainfall is relatively light, with around 148mm over the season and a monthly average of 49mm. Winds are generally light, averaging 13km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 22 to 31°C. Rainfall is heavy, totalling around 682mm across the season with a monthly average of 227mm. Winds are generally light, averaging 11km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 22 to 31°C. Rainfall is heavy, totalling around 554mm across the season with a monthly average of 185mm. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 21 to 34°C. Precipitation is minimal, with only around 27mm for the entire season. Winds are generally light, averaging 15km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Açailândia based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
