Monthly Climate
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Best time to visit Plymouth

July is the best time to visit Plymouth for general sightseeing, with average highs of 19 °C and about 12 wet days. The comfortable season runs roughly June to September.

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 July comfort 80/100
A beach holiday July sea 16 °C
The least cloud April 66 % average cloud cover
The least rain September 66 mm
Warmth July 19 °C
Cooler weather February 8.7 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 July 80 19 °C 12 33
2 August 78 19 °C 13 33
3 September 75 17 °C 11 28
4 June 73 18 °C 13 19
5 May 63 15 °C 12 9
6 October 59 14 °C 14 8
7 April 51 12 °C 12 6
8 November 45 11 °C 14 2
9 March 42 10 °C 12 6
10 December 36 9.3 °C 14 3
11 February 36 8.7 °C 12 7
12 January 33 8.8 °C 14 3

For a beach holiday

July scores highest, with a sea temperature of 16 °C and air temperatures around 19 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 10 °C 8.8 °C 75 % 3
February 9.5 °C 8.7 °C 73 % 7
March 9.3 °C 10 °C 71 % 6
April 10 °C 12 °C 66 % 6
May 12 °C 15 °C 68 % 9
June 14 °C 18 °C 69 % 19
July 16 °C 19 °C 69 % 33
August 17 °C 19 °C 70 % 33
September 16 °C 17 °C 69 % 28
October 15 °C 14 °C 72 % 8
November 13 °C 11 °C 74 % 2
December 12 °C 9.3 °C 75 % 3

When to think twice

January scores lowest with about 14 wet days and highs near 8.8 °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 8.8 °C 88 mm 75 %
February 8.7 °C 76 mm 73 %
March 10.2 °C 68 mm 71 %
April 12.4 °C 73 mm 66 %
May 15.0 °C 76 mm 68 %
June 17.6 °C 74 mm 69 %
July 19.4 °C 73 mm 69 %
August 19.3 °C 80 mm 70 %
September 17.4 °C 66 mm 69 %
October 14.5 °C 97 mm 72 %
November 11.4 °C 97 mm 74 %
December 9.3 °C 100 mm 75 %

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.