Climate Insights for Cruzeiro do Sul

The climate in Cruzeiro do Sul is hot. The average annual temperature is 26°C and approximately 2224mm of precipitation falls per year. Cruzeiro do Sul receives a notable amount of rainfall throughout the year, including during its driest month. Cruzeiro do Sul sits near the equator, so seasonal temperature differences are minimal throughout the year.

Cruzeiro do Sul sees moderate temperature variation throughout the year, ranging from 21°C to 33°C. The warmest month is September, when average highs reach 33°C and the mean temperature sits around 27°C. July is the coolest month, with minimum temperatures around 21°C and an average of 25°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.

Cruzeiro do Sul is a very wet location, receiving approximately 2224mm of precipitation annually, which averages out to around 185mm per month. The wettest month is March, averaging 323mm of rainfall. January and February also tend to see above-average precipitation. The driest month is July, with just 52mm. That's 272mm 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.

Cruzeiro do Sul is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 7km/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.

It is currently autumn in Cruzeiro do Sul, which began on March 20, 2026. Cruzeiro do Sul 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 July near 21°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Cruzeiro do Sul is during June, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 81mm per month. By contrast, September can be uncomfortably hot with highs reaching 33°C, while July is the coldest period with lows dropping to 21°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Cruzeiro do Sul 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.