Monthly Climate
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Best time to visit West Island

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

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 October comfort 68/100
A beach holiday October sea 27 °C
The least cloud August 55 % average cloud cover
The least rain October 54 mm
Warmth April 28 °C
Cooler weather September 26 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 October 68 26 °C 7 90
2 November 66 26 °C 8 88
3 September 65 26 °C 9 86
4 December 63 27 °C 10 83
5 January 59 27 °C 13 76
6 August 57 26 °C 14 75
7 February 54 27 °C 16 71
8 July 51 26 °C 18 73
9 June 49 27 °C 18 73
10 March 47 28 °C 20 71
11 May 46 27 °C 18 72
12 April 45 28 °C 19 71

For a beach holiday

October 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 28 °C 27 °C 59 % 76
February 28 °C 27 °C 63 % 71
March 29 °C 28 °C 64 % 71
April 29 °C 28 °C 62 % 71
May 28 °C 27 °C 58 % 72
June 28 °C 27 °C 58 % 73
July 27 °C 26 °C 59 % 73
August 27 °C 26 °C 55 % 75
September 27 °C 26 °C 57 % 86
October 27 °C 26 °C 56 % 90
November 27 °C 26 °C 61 % 88
December 27 °C 27 °C 61 % 83

When to think twice

April scores lowest with about 19 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 27.0 °C 119 mm 59 %
February 27.4 °C 178 mm 63 %
March 27.5 °C 207 mm 64 %
April 27.5 °C 199 mm 62 %
May 27.3 °C 135 mm 58 %
June 26.8 °C 125 mm 58 %
July 26.3 °C 122 mm 59 %
August 25.9 °C 72 mm 55 %
September 25.7 °C 59 mm 57 %
October 25.9 °C 54 mm 56 %
November 26.2 °C 94 mm 61 %
December 26.5 °C 118 mm 61 %

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.