Climate Overview
The climate in Igarapé Açu is hot. The average annual temperature is 27°C and approximately 2223mm of precipitation falls per year. March is the wettest month, receiving around 507mm of rainfall. 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 October, 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 very wet location, receiving approximately 2223mm of precipitation annually, which averages out to around 185mm per month. The wettest month is March, averaging 507mm of rainfall. April and February also tend to see above-average precipitation. The driest month is October, with just 29mm. That's 479mm 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 mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 11km/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.
Seasons
88 days until Winter
It is currently autumn in Igarapé Açu, which began on March 20, 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 October at around 34°C, while the coldest stretch bottoms out in July near 23°C. Winter is next, beginning on June 21, 2026 — 88 days from now.
Spring
Temperatures range from 23 to 34°C. Rainfall is relatively light, with around 113mm over the season and a monthly average of 38mm. Winds are moderate at around 16km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 23 to 32°C. Rainfall is heavy, totalling around 747mm across the season with a monthly average of 249mm. Winds are generally light, averaging 14km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 1166mm across the season with a monthly average of 389mm. Winds are generally light, averaging 12km/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 198mm for the season, averaging 66mm per month. Winds are generally light, averaging 13km/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.
