French Guiana weather in October 2025

Q: How hot is it in French Guiana in October?

Daytime temperatures usually reach 32°C in Cayenne, French Guiana in October with very high heat and humidity, falling to 23°C at night.

Q: How sunny is it in French Guiana in October?

There are normally 8 hours of bright sunshine each day in Cayenne, French Guiana in October - that's 70% of daylight hours.

Q: How warm is the sea around French Guiana in October?

The average sea temperature around Cayenne, French Guiana in October is 28°C.

Q: Does it rain in French Guiana in October?

There are usually 4 days with some rain in Cayenne, French Guiana in October and the average monthly rainfall is 46mm.

Expect 32°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in French Guiana in October. Check more long-term weather averages for French Guiana in October before you book your next holiday to French Guiana in 2025/2026.

32
32°C max day temperature
8
8 hours of sunshine per day
4
4 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
46
46 mm of monthly rainfall
11
11+ (Extreme) UV index
28
28°C sea temperature

More about French Guiana

French Guiana by month

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

Recommended for French Guiana

Travel Up: up to £20 off flight & hotel bookings

Discount Code

Save up to £20 on flights & hotels with Travel Up
Offer only valid on bookings of £500 or more
Use discount code at check out for offer to apply

Show discount code

******M20

Redeem Travel Up discount code >>

Expires at 23:59 on Saturday 30th Nov 2024 · View all Travel Up offers

The October weather guide for French Guiana, represented by Cayenne, (Cayenne) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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

How hot is it in French Guiana in October?

Daytime temperatures usually reach 32°C in Cayenne, French Guiana in October with very high heat and humidity, falling to 23°C at night.

How sunny is it in French Guiana in October?

There are normally 8 hours of bright sunshine each day in Cayenne, French Guiana in October - that's 70% of daylight hours.

How warm is the sea around French Guiana in October?

The average sea temperature around Cayenne, French Guiana in October is 28°C.

Does it rain in French Guiana in October?

There are usually 4 days with some rain in Cayenne, French Guiana in October and the average monthly rainfall is 46mm.

French Guiana October sunrise & sunset times

Browse the sunrise and sunset times for French Guiana in October 2025. Select a month to view French Guiana sunrise and sunset times for the next 12 months. The French Guiana sunrise and sunset times shown below are for Cayenne.

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