Saint-Denis weather in December 2025

Q: How hot is it in Saint-Denis in December?

Daytime temperatures usually reach 26°C in Saint-Denis in December with moderate heat and humidity, falling to 19°C at night.

Q: How sunny is it in Saint-Denis in December?

There are normally 7 hours of bright sunshine each day in Saint-Denis in December - that's 50% of daylight hours.

Q: How warm is the sea around Saint-Denis in December?

The average sea temperature around Saint-Denis in December is 26°C.

Q: Does it rain in Saint-Denis in December?

There are usually 17 days with some rain in Saint-Denis in December and the average monthly rainfall is 153mm.

Q: What is the chance of a cyclone in Saint-Denis in December?

On average less than 1 day in December in Saint-Denis is likely to be affected by the passage of one or more tropical storms.

Expect daytime maximum temperatures of 79°F in Saint-Denis, Reunion in December based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 6.0 inches of rainfall in the month.

79
79°F max day temperature
7
7 hours of sunshine per day
17
17 days with some rainfall
66
66°F min night temperature
13
13 hours of daylight per day
M
Moderate heat & humidity
6.0
6.0 inches of monthly rainfall
11
11+ (Extreme) UV index
79
79°F sea temperature

More about Saint-Denis

Saint-Denis by month

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

Recommended for Reunion

Booking.com: Latest worldwide hotel deals

Sale

Check out latest hotel deals worldwide with Booking.com
Find trending hotels, popular destinations & more
Search for specific destinations & dates or by hotel type

Go to Booking.com deal >>

View all Booking.com offers

The December weather guide for Reunion (Saint-Denis) 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) | Imperial (°F)

How hot is it in Saint-Denis in December?

Daytime temperatures usually reach 79°F in Saint-Denis in December with moderate heat and humidity, falling to 66°F at night.

How sunny is it in Saint-Denis in December?

There are normally 7 hours of bright sunshine each day in Saint-Denis in December - that's 50% of daylight hours.

How warm is the sea around Saint-Denis in December?

The average sea temperature around Saint-Denis in December is 79°F.

Does it rain in Saint-Denis in December?

There are usually 17 days with some rain in Saint-Denis in December and the average monthly rainfall is 6.0 inches.

What is the chance of a cyclone in Saint-Denis in December?

On average less than 1 day in December in Saint-Denis is likely to be affected by the passage of one or more tropical storms.

Saint-Denis December sunrise & sunset times

Browse the sunrise and sunset times for Saint-Denis in December 2025. Select a month to view Saint-Denis sunrise and sunset times for the next 12 months.

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

Date	Sunrise times	Sunset times
Monday, 1st December 2025	05:28	18:47
Tuesday, 16th December 2025	05:32	18:56
Wednesday, 31st December 2025	05:40	19:03

Be inspired

Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers

We promise not to share your details

Popular travel offers

Reunion - quick facts
Time difference	UK +4 hours
Language(s)	French
Currency	Euro
Electricity	C + E plug (230V)
Driving side	Right
Why visit?	Beaches Nature
Tourist info	Reunion Island Tourism