Monthly Climate
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Best time to visit Roseau

February is the best time to visit Roseau for general sightseeing, with average highs of 26 °C and about 7 wet days. The comfortable season runs roughly January to April.

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 February comfort 70/100
A beach holiday February sea 27 °C
The least cloud January 31 % average cloud cover
The least rain March 26 mm
Warmth September 28 °C
Cooler weather February 26 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 February 70 26 °C 7 89
2 March 69 26 °C 8 89
3 April 64 27 °C 9 86
4 January 62 26 °C 12 80
5 May 58 28 °C 11 81
6 December 57 27 °C 14 75
7 June 54 28 °C 11 80
8 November 50 27 °C 18 71
9 September 48 28 °C 17 69
10 July 47 28 °C 16 72
11 October 46 28 °C 19 70
12 August 45 28 °C 18 71

For a beach holiday

February scores highest, with a sea temperature of 27 °C and air temperatures around 26 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 27 °C 26 °C 31 % 80
February 27 °C 26 °C 31 % 89
March 27 °C 26 °C 35 % 89
April 27 °C 27 °C 44 % 86
May 28 °C 28 °C 54 % 81
June 28 °C 28 °C 58 % 80
July 28 °C 28 °C 49 % 72
August 29 °C 28 °C 50 % 71
September 29 °C 28 °C 59 % 69
October 29 °C 28 °C 56 % 70
November 29 °C 27 °C 47 % 71
December 28 °C 27 °C 37 % 75

When to think twice

August scores lowest with about 18 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 26.0 °C 38 mm 31 %
February 25.9 °C 26 mm 31 %
March 26.3 °C 26 mm 35 %
April 27.0 °C 35 mm 44 %
May 27.7 °C 48 mm 54 %
June 28.0 °C 53 mm 58 %
July 28.0 °C 82 mm 49 %
August 28.3 °C 106 mm 50 %
September 28.4 °C 123 mm 59 %
October 28.0 °C 120 mm 56 %
November 27.3 °C 106 mm 47 %
December 26.6 °C 55 mm 37 %

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.