Monthly Climate
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Best time to visit Jamestown

June is the best time to visit Jamestown for general sightseeing, with average highs of 21 °C and about 2 wet days.

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 June comfort 85/100
A beach holiday March sea 25 °C
The least cloud February 44 % average cloud cover
The least rain November 3 mm
Warmth March 24 °C
Cooler weather September 19 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 June 85 21 °C 2 82
2 July 85 20 °C 1 75
3 December 84 21 °C 0 78
4 May 84 23 °C 2 89
5 August 84 20 °C 1 69
6 November 84 20 °C 1 70
7 September 83 19 °C 1 67
8 January 83 23 °C 1 87
9 October 83 20 °C 1 67
10 February 80 24 °C 1 93
11 April 80 24 °C 2 93
12 March 79 24 °C 3 95

For a beach holiday

March 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 23 °C 23 °C 46 % 87
February 24 °C 24 °C 44 % 93
March 25 °C 24 °C 45 % 95
April 25 °C 24 °C 50 % 93
May 24 °C 23 °C 54 % 89
June 23 °C 21 °C 59 % 82
July 22 °C 20 °C 63 % 75
August 21 °C 20 °C 70 % 69
September 20 °C 19 °C 73 % 67
October 20 °C 20 °C 72 % 67
November 21 °C 20 °C 63 % 70
December 22 °C 21 °C 53 % 78

When to think twice

March scores lowest with about 3 wet days and highs near 24 °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 22.6 °C 5 mm 46 %
February 23.7 °C 5 mm 44 %
March 24.2 °C 8 mm 45 %
April 23.7 °C 6 mm 50 %
May 22.7 °C 6 mm 54 %
June 21.5 °C 8 mm 59 %
July 20.4 °C 5 mm 63 %
August 19.7 °C 5 mm 70 %
September 19.5 °C 4 mm 73 %
October 19.6 °C 3 mm 72 %
November 20.0 °C 3 mm 63 %
December 21.1 °C 3 mm 53 %

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.