Climate Insights for União

The climate in União is cold. The average annual temperature is -38°C and approximately 47mm of precipitation falls per year. September is the wettest month, receiving around 11mm of rainfall. União sits near the equator, so seasonal temperature differences are minimal throughout the year. Light snow can occur between April and October.

União sees moderate temperature variation throughout the year, ranging from -43°C to -31°C. May is the warmest month, though highs remain moderate at -31°C with a mean of -35°C. January brings the harshest conditions, with lows dropping to -43°C and an average temperature of -42°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between July and August, with a 5°C shift in average temperatures.

União is a quite dry location, receiving approximately 47mm of precipitation annually, which averages out to around 4mm per month. The wettest month is September, averaging 11mm of rainfall. August and May also tend to see above-average precipitation. The driest month is January, with just 0mm. 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. Light snowfall can occur between April and October, totalling around 47cm annually. September is the snowiest month with approximately 11cm.

União is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 5km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

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 May at around -31°C, while the coldest stretch bottoms out in January near -43°C. Spring is next, beginning on September 23, 2026 — 16 days from now.

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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.