Monthly Climate
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Best time to visit Saint-Denis

August is the best time to visit Saint-Denis for general sightseeing, with average highs of 24 °C and about 9 wet days. The comfortable season runs roughly June to October.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking August comfort 87/100
A beach holiday June sea 25 °C
The least cloud July 35 % average cloud cover
The least rain August 35 mm
Warmth February 28 °C
Cooler weather July 23 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 August 87 24 °C 9 78
2 July 86 23 °C 10 77
3 September 85 24 °C 10 79
4 June 84 24 °C 10 81
5 October 80 25 °C 11 81
6 May 71 26 °C 15 74
7 November 69 26 °C 15 75
8 April 62 27 °C 16 73
9 December 58 27 °C 18 74
10 March 52 28 °C 21 72
11 January 52 28 °C 21 73
12 February 51 28 °C 22 72

For a beach holiday

June scores highest, with a sea temperature of 25 °C and air temperatures around 24 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 28 °C 28 °C 65 % 73
February 28 °C 28 °C 64 % 72
March 28 °C 28 °C 60 % 72
April 28 °C 27 °C 50 % 73
May 27 °C 26 °C 43 % 74
June 25 °C 24 °C 36 % 81
July 24 °C 23 °C 35 % 77
August 24 °C 24 °C 35 % 78
September 24 °C 24 °C 38 % 79
October 24 °C 25 °C 45 % 81
November 25 °C 26 °C 51 % 75
December 27 °C 27 °C 57 % 74

When to think twice

February scores lowest with about 22 wet days and highs near 28 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

Month Avg high Rainfall Cloud
January 28.2 °C 266 mm 65 %
February 28.2 °C 256 mm 64 %
March 28.1 °C 244 mm 60 %
April 27.4 °C 81 mm 50 %
May 25.7 °C 72 mm 43 %
June 24.3 °C 40 mm 36 %
July 23.5 °C 37 mm 35 %
August 23.6 °C 35 mm 35 %
September 24.3 °C 37 mm 38 %
October 25.3 °C 50 mm 45 %
November 26.3 °C 84 mm 51 %
December 27.5 °C 141 mm 57 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.