St Barthelemy weather live forecast

Friday
18th Sep
31

28

6

11
Saturday
19th Sep
31

28

7

11
Sunday
20th Sep
31

28

6

11
Monday
21st Sep
31

28

7

11
Tuesday
22nd Sep
31

28

6

11

5-day weather forecast updated at 04:01 on Friday 18th September 2026 GMT

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The 5-day weather forecast for St Barthelemy is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

St Barthelemy weather forecast by day

Below are the detailed weather forecasts for St Barthelemy for the next 5 days.

St Barthelemy weather for Friday 18th September 2026

Expect broken clouds in St Barthelemy, St Barthelemy with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the east.

31
°C maximum temperature
28
°C minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from E

St Barthelemy weather for Saturday 19th September 2026

Expect broken clouds in St Barthelemy, St Barthelemy with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the east.

31
°C maximum temperature
28
°C minimum temperature
broken clouds
7
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
5
kph wind from E

St Barthelemy weather for Sunday 20th September 2026

Expect isolated thunderstorms in St Barthelemy, St Barthelemy with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 48% chance of some rain and little or no wind of 3 kph from the south-east.

31
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
48
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
3
kph wind from SE

St Barthelemy weather for Monday 21st September 2026

Expect isolated thunderstorms in St Barthelemy, St Barthelemy with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 7 hours of bright sunshine. There are 10-20 mm of rainfall expected with 53% chance of some rain and little or no wind of 4 kph from the south-east.

31
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
11
UV index (Extreme)
53
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
4
kph wind from SE

St Barthelemy weather for Tuesday 22nd September 2026

Expect isolated thunderstorms in St Barthelemy, St Barthelemy with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 56% chance of some rain and a light breeze of 11 kph from the east.