Monthly Climate
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Best time to visit Surrey

July is the best time to visit Surrey for general sightseeing, with average highs of 24 °C and about 5 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 95/100
A beach holiday August sea 16 °C
The least cloud July 43 % average cloud cover
The least rain July 34 mm
Warmth August 24 °C
Cooler weather December 5.1 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 July 95 24 °C 5 62
2 August 94 24 °C 6 62
3 September 86 20 °C 9 36
4 June 86 20 °C 9 34
5 May 75 18 °C 10 22
6 October 55 14 °C 15 0
7 April 51 13 °C 15 0
8 March 34 10 °C 18 0
9 February 30 7.8 °C 15 1
10 November 27 8.4 °C 19 0
11 January 18 5.7 °C 18 0
12 December 17 5.1 °C 18 0

For a beach holiday

August scores highest, with a sea temperature of 16 °C and air temperatures around 24 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 7.1 °C 5.7 °C 75 % 0
February 7.2 °C 7.8 °C 69 % 1
March 7.9 °C 10 °C 71 % 0
April 9.6 °C 13 °C 67 % 0
May 12 °C 18 °C 62 % 22
June 14 °C 20 °C 60 % 34
July 16 °C 24 °C 43 % 62
August 16 °C 24 °C 45 % 62
September 14 °C 20 °C 51 % 36
October 11 °C 14 °C 67 % 0
November 9.1 °C 8.4 °C 75 % 0
December 7.7 °C 5.1 °C 77 % 0

When to think twice

December scores lowest with about 18 wet days and highs near 5.1 °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 5.7 °C 220 mm 75 %
February 7.8 °C 137 mm 69 %
March 10.2 °C 177 mm 71 %
April 13.5 °C 127 mm 67 %
May 17.5 °C 85 mm 62 %
June 19.9 °C 62 mm 60 %
July 23.7 °C 34 mm 43 %
August 23.9 °C 51 mm 45 %
September 20.4 °C 86 mm 51 %
October 14.0 °C 170 mm 67 %
November 8.4 °C 249 mm 75 %
December 5.1 °C 209 mm 77 %

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.