Climate Overview
The climate in Union Island Airport is hot. The average annual temperature is 27°C and approximately 1158mm of precipitation falls per year. Union Island Airport receives a notable amount of rainfall throughout the year, including during its driest month. Union Island Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: September, October, August. The coldest months are February, January, March, when temperatures can drop to 25°C.
Temperature
Union Island Airport has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is September, when average highs reach 29°C and the mean temperature sits around 28°C. February is the coolest month, with minimum temperatures around 25°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows.
Precipitation
Union Island Airport is a moderately rainy area, receiving approximately 1158mm of precipitation annually, which averages out to around 96mm per month. The wettest month is October, averaging 165mm of rainfall. November and July also tend to see above-average precipitation. The driest month is April, with just 31mm. That's 134mm less than October, 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
Union Island Airport is moderately windy, with an average annual wind speed of 26km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 29km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in September, with average winds dropping to 20km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 9km/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 28km/h in winter, 27km/h in spring, 26km/h in summer, 22km/h in autumn.
Seasons
87 days until Winter
It is currently autumn in Union Island Airport, which began on September 23, 2026. Union Island Airport is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in September at around 29°C, while the coldest stretch bottoms out in February near 25°C. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from 25 to 28°C. Rainfall is relatively light, with around 117mm over the season and a monthly average of 39mm. Winds are strong, averaging 27km/h. Light layers work well as temperatures warm through the season. It is a great time to be outdoors.
Summer
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 429mm across the season with a monthly average of 143mm. Winds are strong, averaging 26km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 458mm across the season with a monthly average of 153mm. Winds are moderate at around 22km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 27°C. Precipitation is moderate at around 154mm for the season, averaging 51mm per month. Winds are strong, averaging 28km/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 Union Island Airport 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.
