Climate Overview
The climate in Princess Juliana International Airport is hot. The average annual temperature is 26°C and approximately 750mm of precipitation falls per year. September is the wettest month, receiving around 127mm of rainfall. Princess Juliana International Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: September, August, October. The coldest months are February, March, January, when temperatures can drop to 24°C.
Temperature
Princess Juliana International Airport has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is September, when average highs reach 28°C and the mean temperature sits around 28°C. February is the coolest month, with minimum temperatures around 24°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows.
Precipitation
Princess Juliana International Airport is a relatively dry area, receiving approximately 750mm of precipitation annually, which averages out to around 63mm per month. The wettest month is September, averaging 127mm of rainfall. October and November also tend to see above-average precipitation. The driest month is March, with just 20mm. That's 108mm less than September, 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
Princess Juliana International Airport is moderately windy, with an average annual wind speed of 29km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 33km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in October, with average winds dropping to 26km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 7km/h between the calmest and windiest months.
Seasons
90 days until Summer
It is currently spring in Princess Juliana International Airport, which began on March 20, 2026. Princess Juliana International 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 28°C, while the coldest stretch bottoms out in February near 24°C. Summer is next, beginning on June 21, 2026 — 90 days from now.
Spring
Temperatures range from 24 to 27°C. Rainfall is relatively light, with around 93mm over the season and a monthly average of 31mm. Winds are strong, averaging 29km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 26 to 28°C. Precipitation is moderate at around 202mm for the season, averaging 67mm per month. Winds are strong, averaging 31km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 354mm across the season with a monthly average of 118mm. Winds are strong, averaging 27km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 27°C. Rainfall is relatively light, with around 101mm over the season and a monthly average of 34mm. Winds are strong, averaging 30km/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 Princess Juliana International Airport is during February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 36mm per month. By contrast, September can be uncomfortably hot with temperatures reaching 28°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Princess Juliana International 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.
