Climate Overview
The climate in Barra Mansa is warm and mild. The average annual temperature is 22°C and approximately 1399mm of precipitation falls per year. January is the wettest month, receiving around 241mm of rainfall. Barra Mansa 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, August, June, when temperatures can drop to 14°C.
Temperature
Barra Mansa sees moderate temperature variation throughout the year, ranging from 14°C to 30°C. The warmest month is January, when average highs reach 30°C and the mean temperature sits around 25°C. July is the coolest month, with minimum temperatures around 14°C and an average of 18°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between August and September, with a 2°C shift in average temperatures.
Precipitation
Barra Mansa is a fairly wet location, receiving approximately 1399mm of precipitation annually, which averages out to around 117mm per month. The wettest month is January, averaging 241mm of rainfall. February and December also tend to see above-average precipitation. The driest month is July, with just 18mm. That's 223mm less than January, 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
Barra Mansa is relatively calm, with an average annual wind speed of 11km/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 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, 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 3km/h between the calmest and windiest months.
Seasons
89 days until Winter
It is currently autumn in Barra Mansa, which began on March 20, 2026. Barra Mansa 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 30°C, while the coldest stretch bottoms out in July near 14°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 17 to 28°C. Rainfall is heavy, totalling around 347mm across the season with a monthly average of 116mm. Winds are generally light, averaging 12km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 20 to 30°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 16 to 29°C. Precipitation is moderate at around 294mm for the season, averaging 98mm per month. Winds are generally light, averaging 10km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 14 to 25°C. Rainfall is relatively light, with around 76mm over the season and a monthly average of 25mm. Winds are generally light, averaging 10km/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 Barra Mansa 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 41mm per month. By contrast, January can be uncomfortably hot with temperatures reaching 30°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 Barra Mansa 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.
