Which is the hottest month in French Guiana?

The hottest time of year in Cayenne, French Guiana is normally October. Expect maximum daytime temperatures to reach 32°C with very high heat and humidity.

Best time to visit French Guiana

Q: When is the best time to visit French Guiana?

The best time to visit French Guiana (Cayenne) is January, February, March and May based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C.

Q: Which month has the most rain in French Guiana?

In terms of rainfall, May is usually the wettest month in Cayenne, French Guiana with 544mm on average. There are normally 26 days in May with some rain.

Q: When is it sunniest in French Guiana?

The sunniest time of year in Cayenne, French Guiana is normally October with bright sunshine on average for 70% of daylight hours; that's 8 hours of sunshine per day.

Q: When is the sea warmest in French Guiana?

The sea is usually at its warmest in Cayenne, French Guiana in August when the water temperature reaches 28°C.

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

French Guiana 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 French Guiana?

The best time to visit French Guiana (Cayenne) is January, February, March and May based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]

Change the criteria to reflect your weather preferences.

4
Jan
4
Feb
4
Mar
3.5
Apr
4
May
3.5
Jun
2.5
Jul
2
Aug
2
Sep
2
Oct
2.5
Nov
3.5
Dec

Change criteria

Max Day Temperature (°F)

84
Jan
84
Feb
84
Mar
86
Apr
84
May
86
Jun
88
Jul
90
Aug
90
Sep
90
Oct
88
Nov
86
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for French Guiana, represented by Cayenne, (Cayenne) 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) | Imperial (°F)

French Guiana weather overview

French Guiana is a small country in South America bordering Brazil and Suriname, with an Atlantic coastline at its northern edge. It consists largely of lowland plains with small hills to the south, and has an equatorial rainforest interior. Expect a climate of Turkish bath-style sultriness throughout the year, though conditions are at their most steamy during the rainy season, which stretches from December to mid-July.

Best time to visit is August and November, when conditions are driest and sunniest, and humidity not too oppressive.

What to pack for French Guiana weather

Take very light cotton clothing and reliable waterproofs if you are visiting in the long wet season. Add a wrap for cooler evenings.

More about French Guiana

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

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

French Guiana travel guide - essential info

Below is a beginner's guide to French Guiana 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.

French Guiana - quick facts
Time difference	UK -3 hours
Language(s)	French
Currency	Euro
Electricity	C + E plug (230V)
Driving side	Right

French Guiana tourist information

Atout France

Travelling to French Guiana?
Hotels Car hire eSIMs

French Guiana travel guidance

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

UK traveller advice for French Guiana - UK FCDO
Irish traveller advice for French Guiana - Department of Foreign Affairs, Ireland
Canadian travel advice for French Guiana - Government of Canada
US travel advisories for French Guiana - US Department of State
Safe travel advisories for French Guiana - Ministry of Foreign Affairs, New Zealand

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 French Guiana.

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

French Guiana travel health

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

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

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

Note: CDC - Centers for Disease Control and Prevention

French Guiana travel features

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

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

French Guiana FAQs

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

Which month has the most rain in French Guiana?

In terms of rainfall, January is usually the wettest month in Cayenne, French Guiana with 0.0 inches on average. There are normally no days in January with some rain.

When is it sunniest in French Guiana?

The sunniest time of year in Cayenne, French Guiana 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 French Guiana?

The sea is usually at its warmest in Cayenne, French Guiana in January when the water temperature reaches 32°F.

What is the time difference between French Guiana and the UK?

The time difference between French Guiana and the UK is UK time-3 hours.

What is the main language spoken in French Guiana?

The main language spoken in French Guiana is French.

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What is the currency in French Guiana?

The currency in French Guiana is the Euro (EUR).

Which plugs are used in French Guiana?

French Guiana uses electrical plug type C + E (230 Volts).

Which side of the road do they drive on in French Guiana?

They drive on the right side of the road in French Guiana.

French Guiana travel deals

Holidays to French Guiana

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