St Barthelemy weather in September 2024

Expect 31°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Barthelemy in September. Check more long-term weather averages for St Barthelemy in September before you book your next holiday to St Barthelemy in 2024/2025.

  • 31°C maximum daytime temperature in September in St Barthelemy31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 19 days with some rainfall in September in St Barthelemy19
    19 days with some rainfall
  • 25°C minimum night-time temperature in September in St Barthelemy25
    25°C min night temperature
  • 12 hours of daylight per day in September in St Barthelemy12
    12 hours of daylight per day
  • Very high heat & humidity in September in St BarthelemyVH
    Very High heat & humidity
  • 129 mm monthly rainfall in September in St Barthelemy129
    129 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in St Barthelemy11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in St Barthelemy29
    29°C sea temperature

More about St Barthelemy

St Barthelemy by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec