Climate Overview
The climate in Casimiro de Abreu is warm and mild. The average annual temperature is 22°C and approximately 1848mm of precipitation falls per year. December is the wettest month, receiving around 285mm of rainfall. Casimiro de Abreu is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: January, February, March. The coldest months are July, June, August, when temperatures can drop to 15°C.
Temperature
Casimiro de Abreu sees moderate temperature variation throughout the year, ranging from 15°C to 29°C. The warmest month is January, when average highs reach 29°C and the mean temperature sits around 25°C. July is the coolest month, with minimum temperatures around 15°C and an average of 19°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Casimiro de Abreu is a fairly wet location, receiving approximately 1848mm of precipitation annually, which averages out to around 154mm per month. The wettest month is December, averaging 285mm of rainfall. February and November also tend to see above-average precipitation. The driest month is July, with just 27mm. That's 258mm less than December, 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
Casimiro de Abreu 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 September, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.
Seasons
89 days until Winter
It is currently autumn in Casimiro de Abreu, which began on March 20, 2026. Casimiro de Abreu is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in January at around 29°C, while the coldest stretch bottoms out in July near 15°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 18 to 26°C. Rainfall is heavy, totalling around 520mm across the season with a monthly average of 173mm. Winds are generally light, averaging 14km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 21 to 29°C. Rainfall is heavy, totalling around 833mm across the season with a monthly average of 278mm. Winds are generally light, averaging 11km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 17 to 29°C. Rainfall is heavy, totalling around 374mm across the season with a monthly average of 125mm. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 15 to 25°C. Rainfall is relatively light, with around 121mm over the season and a monthly average of 40mm. Winds are generally light, averaging 12km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Casimiro de Abreu is during April, May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 62mm per month. By contrast, January can be uncomfortably hot with temperatures reaching 29°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Casimiro de Abreu 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.
