Saint-Barthelemy weather in September 2025
Saint-Barthelemy weather in September 2025
Day
31 °C
Night
25 °C
Sea
29 °C
Precipitation
104 mm
in month
Rainy days
13 days
in month
Daylight
12 hours
average
Sunshine
8 hours
average
Humidity
77 %
Day
31 °C
Night
25 °C
Sea
29 °C
Precipitation
104 mm
in month
Rainy days
13 days
in month
Daylight
12 hours
average
Sunshine
8 hours
average
Humidity
77 %
Overview: Saint-Barthelemy
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Weather overview
In September in Saint-Barthelemy, the average air temperature ranges from 31 °C (87 °F) during the day to 25 °C (77 °F) at night. There are 13 days of rain on average, where the rainfall is 104 mm (4.09 in).
Is September a good month to visit Saint-Barthelemy?
September is one of the best months to visit Saint-Barthelemy. The daily temperatures in this month reach pleasant 31 °C (87 °F). The seawater temperature reaches ideal 29 °C (83 °F). At night, temperatures hover around a pleasant 25 °C (77 °F).
What is the temperature in Saint-Barthelemy during the day in September?
In Saint-Barthelemy in September, the average daily temperatures will be 31 °C (87 °F). The great temperature for lying by the sea or pool and sunbathing, everywhere else you will probably be a bit hot. Don't forget to drink during the day, in these temperatures you should hydrate yourself a lot.
What is the sea temperature in Saint-Barthelemy in September?
In September in Saint-Barthelemy expect the sea to be warm at 29 °C (83 °F). This temperature is someone's dream come true, while for someone it may no longer be ideal for the purpose of refreshment.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.What is the average number of rainy days in Saint-Barthelemy in September?
There are 13 days, which are rainy in September in Saint-Barthelemy, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 3.1 days of the week, or in general - 44 % days.
How heavy is the precipitation in Saint-Barthelemy in September?
There is precipitation of 104 mm (4.09 in) in September in Saint-Barthelemy, which means 4 mm (0.14 in) rainfall per day on average.
What is the air temperature in September in Saint-Barthelemy at night?
The average night temperature in Saint-Barthelemy in September is 25 °C (77 °F). A very pleasant temperature for long evening walks, fun over a drink outside, or doing sports in the morning. If possible, look for a hotel with air conditioning.
How many hours of sun to expect in September in Saint-Barthelemy?
In Saint-Barthelemy in September, you can expect around 8 hours of sunshine.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.How long is the day (from dawn till dusk) in Saint-Barthelemy in September?
The length of daylight in Saint-Barthelemy in September is 12 hours.
Is it hot in Saint-Barthelemy in September?
In Saint-Barthelemy in September, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
How humid is Saint-Barthelemy in September?
In Saint-Barthelemy in September, expect humidity around 77 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.
Is Saint-Barthelemy rainier in September than in August?
No, September in Saint-Barthelemy is not a rainier month than August.
How windy is it in September in Saint-Barthelemy?
In Saint-Barthelemy in September, there will be an average wind scale of 5.
Is the weather in Saint-Barthelemy warmer in September than in August?
No, in Saint-Barthelemy in September the temperature is not higher than in August.