Daytime highs, nighttime lows and the warmest cities across Saint Barthélemy this September.
Saint Barthélemy, typically experiences warm weather in September, with maximum daytime temperatures around 30°C (86°F) and nighttime temperatures around 27°C (81°F) in Gustavia.
To get a sense of September's typical temperatures in the key spots of Saint Barthélemy, explore the map below. Click on a point for an in-depth look.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Saint Barthélemy.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Average daytime highs in Saint Barthélemy during September reach about 30°C (86°F) in Gustavia.
Nighttime temperatures in Gustavia typically drop to around 27°C (81°F) in September.
Gustavia enjoys close to 240 hours of sunlight. This not only brightens the days but also uplifts the atmosphere during the month.
We have much more information about the climate in Saint Barthélemy.
Weather and climate has detailed information for every country in the world. Are you going to Saint Barthélemy? Get detailed historical weather averages for many cities in Saint Barthélemy.
Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.