Monthly Climate
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Best time to visit Brighton

August is the best time to visit Brighton for general sightseeing, with average highs of 20 °C and about 10 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 August comfort 84/100
A beach holiday August sea 17 °C
The least cloud July 61 % average cloud cover
The least rain March 46 mm
Warmth August 20 °C
Cooler weather January 7.6 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 August 84 20 °C 10 42
2 July 84 20 °C 10 35
3 September 79 18 °C 9 37
4 June 77 17 °C 10 23
5 May 66 15 °C 10 14
6 October 62 14 °C 11 16
7 April 53 12 °C 10 11
8 November 45 11 °C 12 7
9 March 43 9.5 °C 10 11
10 February 35 7.6 °C 10 11
11 December 34 8.2 °C 12 7
12 January 31 7.6 °C 11 7

For a beach holiday

August scores highest, with a sea temperature of 17 °C and air temperatures around 20 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 9.6 °C 7.6 °C 72 % 7
February 8.6 °C 7.6 °C 70 % 11
March 8.3 °C 9.5 °C 69 % 11
April 9.3 °C 12 °C 62 % 11
May 11 °C 15 °C 65 % 14
June 13 °C 17 °C 64 % 23
July 16 °C 20 °C 61 % 35
August 17 °C 20 °C 62 % 42
September 17 °C 18 °C 63 % 37
October 16 °C 14 °C 67 % 16
November 14 °C 11 °C 71 % 7
December 12 °C 8.2 °C 70 % 7

When to think twice

January scores lowest with about 11 wet days and highs near 7.6 °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 7.6 °C 68 mm 72 %
February 7.6 °C 54 mm 70 %
March 9.5 °C 46 mm 69 %
April 11.9 °C 50 mm 62 %
May 14.8 °C 52 mm 65 %
June 17.4 °C 52 mm 64 %
July 19.5 °C 54 mm 61 %
August 19.7 °C 64 mm 62 %
September 17.7 °C 53 mm 63 %
October 14.4 °C 76 mm 67 %
November 10.7 °C 79 mm 71 %
December 8.2 °C 76 mm 70 %

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.