Climate Overview
The climate in Careiro da Várzea is hot. The average annual temperature is 28°C and approximately 2615mm of precipitation falls per year. Careiro da Várzea receives a notable amount of rainfall throughout the year, including during its driest month. Careiro da Várzea sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Careiro da Várzea has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is September, when average highs reach 33°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 25°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows.
Precipitation
Careiro da Várzea is a very wet location, receiving approximately 2615mm of precipitation annually, which averages out to around 218mm per month. The wettest month is March, averaging 392mm of rainfall. April and December also tend to see above-average precipitation. The driest month is August, with just 48mm. That's 344mm 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
Careiro da Várzea is relatively calm, with an average annual wind speed of 10km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.
Seasons
89 days until Winter
It is currently autumn in Careiro da Várzea, which began on March 20, 2026. Careiro da Várzea 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 33°C, while the coldest stretch bottoms out in January near 25°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 25 to 33°C. Rainfall is heavy, totalling around 371mm across the season with a monthly average of 124mm. Winds are generally light, averaging 10km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 916mm across the season with a monthly average of 305mm. Winds are generally light, averaging 10km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 1071mm across the season with a monthly average of 357mm. Winds are generally light, averaging 10km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 33°C. Precipitation is moderate at around 257mm for the season, averaging 86mm per month. Winds are generally light, averaging 10km/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 Careiro da Várzea 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.
