Climate Overview
The climate in Belém de São Francisco is hot. The average annual temperature is 27°C and approximately 300mm of precipitation falls per year. March is the wettest month, receiving around 72mm of rainfall. Belém de São Francisco sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Belém de São Francisco sees moderate temperature variation throughout the year, ranging from 20°C to 35°C. The warmest month is November, when average highs reach 35°C and the mean temperature sits around 29°C. August is the coolest month, with minimum temperatures around 20°C and an average of 25°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.
Precipitation
Belém de São Francisco is a quite dry location, receiving approximately 300mm of precipitation annually, which averages out to around 25mm per month. The wettest month is March, averaging 72mm of rainfall. February and April also tend to see above-average precipitation. The driest month is September, with just 2mm. That's 70mm 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
Belém de São Francisco is moderately windy, with an average annual wind speed of 22km/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 25km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in April, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 6km/h between the calmest and windiest months.
Seasons
89 days until Winter
It is currently autumn in Belém de São Francisco, which began on March 20, 2026. Belém de São Francisco sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in November at around 35°C, while the coldest stretch bottoms out in August near 20°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 21 to 35°C. Precipitation is minimal, with only around 29mm for the entire season. Winds are moderate at around 24km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 24 to 34°C. Rainfall is relatively light, with around 101mm over the season and a monthly average of 34mm. Winds are moderate at around 21km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 22 to 33°C. Rainfall is relatively light, with around 138mm over the season and a monthly average of 46mm. Winds are moderate at around 19km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 20 to 30°C. Precipitation is minimal, with only around 31mm for the entire season. Winds are moderate at around 23km/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 Belém de São Francisco is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 10mm per month. By contrast, November can be uncomfortably hot with temperatures reaching 35°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.
Monthly Climate Data
The table below shows monthly climate averages for Belém de São Francisco 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.
