Climate Overview
The climate in União is hot. The average annual temperature is 28°C and approximately 1480mm of precipitation falls per year. March is the wettest month, receiving around 374mm of rainfall. União sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
União sees moderate temperature variation throughout the year, ranging from 23°C to 37°C. October is the hottest month, with daytime highs reaching 37°C and an average of 31°C. July is the coolest month, with minimum temperatures around 23°C and an average of 28°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.
Precipitation
União is a fairly wet location, receiving approximately 1480mm of precipitation annually, which averages out to around 123mm per month. The wettest month is March, averaging 374mm of rainfall. February and January also tend to see above-average precipitation. The driest month is September, with just 3mm. That's 372mm 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
União is relatively calm, with an average annual wind speed of 2km/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 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
91 days until Spring
It is currently winter in União, which began on June 21, 2026. União sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in October at around 37°C, while the coldest stretch bottoms out in July near 23°C. Spring is next, beginning on September 23, 2026 — 91 days from now.
Spring
Temperatures range from 24 to 37°C. Rainfall is relatively light, with around 56mm over the season and a monthly average of 19mm. Winds are generally light, averaging 2km/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 heavy, totalling around 661mm across the season with a monthly average of 220mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 735mm across the season with a monthly average of 245mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 23 to 35°C. Precipitation is minimal, with only around 28mm for the entire season. Winds are generally light, averaging 2km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for União 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.
