Climate Overview
The climate in Igarapé Açu is hot. The average annual temperature is 27°C and approximately 1839mm of precipitation falls per year. Igarapé Açu receives a notable amount of rainfall throughout the year, including during its driest month. Igarapé Açu sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Igarapé Açu sees moderate temperature variation throughout the year, ranging from 23°C to 34°C. The warmest month is November, when average highs reach 34°C and the mean temperature sits around 28°C. July is the coolest month, with minimum temperatures around 23°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Igarapé Açu is a fairly wet location, receiving approximately 1839mm of precipitation annually, which averages out to around 153mm per month. The wettest month is March, averaging 409mm of rainfall. April and February also tend to see above-average precipitation. The driest month is September, with just 30mm. That's 379mm 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
Igarapé Açu is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
63 days until Spring
It is currently winter in Igarapé Açu, which began on June 21, 2026. Igarapé Açu sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in November at around 34°C, while the coldest stretch bottoms out in July near 23°C. Spring is next, beginning on September 23, 2026 — 63 days from now.
Spring
Temperatures range from 23 to 34°C. Rainfall is relatively light, with around 103mm over the season and a monthly average of 34mm. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 619mm across the season with a monthly average of 206mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 853mm across the season with a monthly average of 284mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 23 to 33°C. Precipitation is moderate at around 264mm for the season, averaging 88mm per month. Winds are generally light, averaging 2km/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 Igarapé Açu 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.