French Guiana weather

Read our complete guide to the weather in French Guiana.

Usually in March
- 29
- 23
- 5
Weather by month
Now Today
- 28
- 4
5-day forecast

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Recommended for French Guiana

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.

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

When is the best time to go to French Guiana?

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

Maximum daytime temperature = 22 - 30°C [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 (°C)

29
Jan
29
Feb
29
Mar
30
Apr
29
May
30
Jun
31
Jul
32
Aug
32
Sep
32
Oct
31
Nov
30
Dec

Best time to go for the weather

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

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

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.

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.

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.

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.

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.

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

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

What is the main language spoken in French Guiana?

The main language spoken in French Guiana is French.

Learn a language for French Guiana with Busuu^*, Lingoda^* and Mondly^*.

What is the currency in French Guiana?

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

Send money to French Guiana with Monito^*.

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.

Compare French Guiana weather with the USA

Below the French Guiana weather chart shows average maximum daytime temperature for French Guiana (Cayenne) and the USA (Washington).

Maximum daytime temperature (°C)

French Guiana (Cayenne)

USA (Washington)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec