Climate Insights for Cuiabá

The climate in Cuiabá is hot. The average annual temperature is 27°C and approximately 1267mm of precipitation falls per year. January is the wettest month, receiving around 231mm of rainfall. Cuiabá 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: September, October, August. The coldest months are July, June, August, when temperatures can drop to 18°C.

Cuiabá sees moderate temperature variation throughout the year, ranging from 18°C to 36°C. September is the hottest month, with daytime highs reaching 36°C and an average of 29°C. July is the coolest month, with minimum temperatures around 18°C and an average of 24°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between August and September, with a 2°C shift in average temperatures.

Cuiabá is a fairly wet location, receiving approximately 1267mm of precipitation annually, which averages out to around 106mm per month. The wettest month is January, averaging 231mm of rainfall. March and February also tend to see above-average precipitation. The driest month is July, with just 3mm. That's 229mm 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.

Cuiabá 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 August, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 9km/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. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 13km/h in winter, 12km/h in spring, 11km/h in summer, 10km/h in autumn.

It is currently autumn in Cuiabá, which began on March 20, 2026. Cuiabá 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 September at around 36°C, while the coldest stretch bottoms out in July near 18°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Cuiabá is during May, June and July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 11mm per month. By contrast, September can be uncomfortably hot with temperatures reaching 36°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Cuiabá 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.