Monthly Climate
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Best time to visit Southend-on-Sea

July is the best time to visit Southend-on-Sea for general sightseeing, with average highs of 21 °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 July comfort 85/100
A beach holiday August sea 18 °C
The least cloud July 61 % average cloud cover
The least rain March 46 mm
Warmth July 21 °C
Cooler weather January 7.3 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 July 85 21 °C 10 46
2 August 85 21 °C 10 51
3 June 81 19 °C 10 30
4 September 78 18 °C 10 36
5 May 69 16 °C 9 18
6 October 60 14 °C 12 11
7 April 55 13 °C 10 11
8 November 42 10 °C 12 6
9 March 42 9.7 °C 10 10
10 February 32 7.6 °C 11 9
11 December 30 7.8 °C 13 5
12 January 27 7.3 °C 13 5

For a beach holiday

August scores highest, with a sea temperature of 18 °C and air temperatures around 21 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 7.3 °C 7.3 °C 73 % 5
February 6.3 °C 7.6 °C 71 % 9
March 6.9 °C 9.7 °C 69 % 10
April 9.0 °C 13 °C 63 % 11
May 12 °C 16 °C 64 % 18
June 15 °C 19 °C 64 % 30
July 17 °C 21 °C 61 % 46
August 18 °C 21 °C 62 % 51
September 17 °C 18 °C 63 % 36
October 15 °C 14 °C 68 % 11
November 12 °C 10 °C 72 % 6
December 9.0 °C 7.8 °C 72 % 5

When to think twice

January scores lowest with about 13 wet days and highs near 7.3 °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 7.3 °C 65 mm 73 %
February 7.6 °C 53 mm 71 %
March 9.7 °C 46 mm 69 %
April 12.5 °C 46 mm 63 %
May 15.6 °C 53 mm 64 %
June 18.7 °C 55 mm 64 %
July 21.0 °C 56 mm 61 %
August 20.9 °C 62 mm 62 %
September 18.2 °C 55 mm 63 %
October 14.5 °C 72 mm 68 %
November 10.4 °C 71 mm 72 %
December 7.8 °C 71 mm 72 %

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.