Which is the hottest month in St Barthelemy?

The hottest time of year in St Barthelemy is normally September. Expect maximum daytime temperatures to reach 31°C with very high heat and humidity.

Best time to visit St Barthelemy

Q: When is the best time to visit St Barthelemy?

The best time to visit St Barthelemy is March based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Q: Which month has the most rain in St Barthelemy?

In terms of rainfall, September is usually the wettest month in St Barthelemy with 129mm on average. There are normally 19 days in September with some rain.

Q: When is it sunniest in St Barthelemy?

The sunniest time of year in St Barthelemy is normally January with bright sunshine on average for 75% of daylight hours; that's 8 hours of sunshine per day.

Q: When is the sea warmest in St Barthelemy?

The sea is usually at its warmest in St Barthelemy in September when the water temperature reaches 29°C.

Find the best time to visit St Barthelemy and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

St Barthelemy by month

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

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When is the best time to visit St Barthelemy?

The best time to visit St Barthelemy is March based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

4
Jan
4
Feb
4
Mar
4
Apr
4
May
3.5
Jun
3.5
Jul
3.5
Aug
3.5
Sep
3.5
Oct
4
Nov
4
Dec

Change criteria

Max Day Temperature (°C)

29
Jan
29
Feb
29
Mar
30
Apr
30
May
31
Jun
31
Jul
31
Aug
31
Sep
31
Oct
30
Nov
29
Dec

Hours of Sunshine (daily)

8
Jan
8
Feb
9
Mar
9
Apr
8
May
8
Jun
8
Jul
9
Aug
8
Sep
8
Oct
8
Nov
8
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for St Barthelemy shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

More about St Barthelemy

Explore our complete guide to St Barthelemy with the latest travel advice for travellers and holidaymakers including official updates and local travel tips for St Barthelemy.

Essential travel guide
Travel guidance
Travel health
Travel features
Top travel deals
FAQs

St Barthelemy travel guide - essential info

Below is a beginner's guide to St Barthelemy with essential travel facts such as dominant language spoken, typical flight time from the UK and the local currency. You can also check whether visas are required and what plug adapter you need to pack.

St Barthelemy - quick facts
Time difference	UK -4 hours
Language(s)	French
Currency	Euro
Electricity	C + E plug (230V)
Driving side	Right

Why visit St Barthelemy?

Considering a holiday to the St Barthelemy? Here are some of the very good reasons it makes such a wonderful holiday destination such as for its beaches to ensure you get the most out of your 2025/2026 escape.

Beaches

St Barthelemy tourist information

Tourisme St Barth

Travelling to St Barthelemy?
Hotels Car hire eSIMs Travel insurance

St Barthelemy travel guidance

Check the latest travel guidance and advice on visiting St Barthelemy from official government sources (in english) from around the world including entry requirements and travel restrictions.

UK traveller advice for St Barthelemy - UK FCDO
Canadian travel advice for St Barthelemy - Government of Canada
US travel advisories for St Barthelemy - US Department of State

Learn more about the current safety and security risks from terrorism, natural disasters and more. Read about the local laws and customs to consider when travelling around St Barthelemy.

Note: UK FCDO - UK Foreign, Commonwealth & Development Office

St Barthelemy travel health

Find out more about staying safe when travelling to St Barthelemy with the latest guidance on required vaccinations and recommended medication to take with you.

Vaccines & medicines for St Barthelemy - CDC
Health & vaccinations for St Barthelemy - TravelHealthPro, NaTHNac
How to stay safe & healthy in St Barthelemy - Fit for Travel, Public Health Scotland

Check out the general travel tips for staying safe and healthy in St Barthelemy, risks of preventable diseases and what to pack.

Note: CDC - Centers for Disease Control and Prevention

St Barthelemy travel features

Do you want to learn more about St Barthelemy? Read our latest features covering travel tips and insider destination guides on where to go and what to do in St Barthelemy.

We don't currently have any travel features on St Barthelemy. Discover more about holiday destinations around the world with this selection of general travel articles.

St Barthelemy FAQs

Read our frequently asked questions about travelling to St Barthelemy including the current entry restrictions, driving side, electrical plugs used and much more.

Which month has the most rain in St Barthelemy?

In terms of rainfall, January is usually the wettest month in St Barthelemy with 0mm on average. There are normally no days in January with some rain.

When is it sunniest in St Barthelemy?

The sunniest time of year in St Barthelemy is normally January with bright sunshine on average for 0% of daylight hours; that's 0 hours of sunshine per day.

When is the sea warmest in St Barthelemy?

The sea is usually at its warmest in St Barthelemy in January when the water temperature reaches 0°C.

What is the time difference between St Barthelemy and the UK?

The time difference between St Barthelemy and the UK is UK time-4 hours.

What is the main language spoken in St Barthelemy?

The main language spoken in St Barthelemy is French.

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What is the currency in St Barthelemy?

The currency in St Barthelemy is the Euro (EUR).

Which plugs are used in St Barthelemy?

St Barthelemy uses electrical plug type C + E (230 Volts).

Which side of the road do they drive on in St Barthelemy?

They drive on the right side of the road in St Barthelemy.

St Barthelemy travel deals

Holidays to St Barthelemy

Check out the latest deals, discount codes and special offers on holidays to St Barthelemy in 2025/2026. Pay low deposits and save with last minute holiday availability and free kids places.