Southend-on-Sea climate: monthly averages: annual mean temperature 10.8 C; warmest month Jul (17.7 C); coldest month Feb (4.8 C).
Annual mean temperature: 10.8 C
Warmest month: Jul (17.7 C)
Coldest month: Feb (4.8 C)
Wettest month: Nov (2.38 mm/day)
All-time record high: 30.7 C
All-time record low: -5.2 C
Southend-on-Sea’s climate averages **10.8°C annually**, with July as the warmest month (17.7°C) and February the coldest (4.8°C). Rainfall totals around **679 mm per year**, peaking in November (2.38 mm/day). Extreme temperatures range from **-5.2°C** to **30.7°C**. |November, with an average of **2.38 mm of rain per day**. |Slightly milder, with **10.8°C** vs. the UK’s ~9.3°C mean. Coastal influence moderates extremes.
Annual mean temperature 10.8 C
Warmest month Jul (17.7 C)
Coldest month Feb (4.8 C)
Wettest month Nov (2.38 mm/day)
All-time record high 30.7 C
All-time record low -5.2 C
Annual precipitation 679 mm / year
Coordinates 51.53782, 0.71433
Population 295,310
Average monthly temperature and rainfall in Southend-on-Sea
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
4.8
1.98
13.3
-5.2
Feb
4.8
1.82
15.3
-4.8
Mar
6.4
1.54
17.9
-3.4
Apr
9.2
1.27
22.9
-0.8
May
12.4
1.64
24.4
1.9
Jun
15.5
1.83
26.8
5.5
Jul
17.7
1.86
30.7
9.3
Aug
17.6
2.03
30.1
7.8
Sep
15.2
1.45
26.8
5.3
Oct
12.0
2.32
24.8
1.0
Nov
8.2
2.38
17.6
-2.6
Dec
5.5
2.23
13.5
-3.9
What the Southend-on-Sea climate table shows
Values are multi-decadal climatological averages for the 51.53782, 0.71433 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.