Southend-on-Sea climate
Southend-on-Sea (England, United Kingdom) has a temperate oceanic climate (Köppen Cfb). The average temperature over the year is 11 °C51 °F, and about 681 mm27 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Southend-on-Sea climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 745 | 337 | 541 | 612.4 | 6 |
| Feb | 745 | 236 | 541 | 512.0 | 7 |
| Mar | 1049 | 338 | 644 | 481.9 | 4 |
| Apr | 1355 | 542 | 949 | 381.5 | 1 |
| May | 1661 | 847 | 1254 | 512.0 | 0 |
| Jun | 1967 | 1253 | 1660 | 552.2 | 0 |
| Jul | 2271 | 1457 | 1864 | 582.3 | 0 |
| Aug | 2271 | 1457 | 1864 | 632.5 | 0 |
| Sep | 1966 | 1153 | 1559 | 431.7 | 0 |
| Oct | 1559 | 948 | 1254 | 722.8 | 0 |
| Nov | 1151 | 642 | 847 | 712.8 | 1 |
| Dec | 846 | 338 | 642 | 692.7 | 5 |
| Year | 2271 | 236 | 1151 | 68127 | 23 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 91% | 76% | 0.8 | 8:18 |
| Feb | 89% | 75% | 1.5 | 9:53 |
| Mar | 85% | 73% | 2.6 | 11:42 |
| Apr | 82% | 66% | 4.2 | 13:47 |
| May | 80% | 68% | 4.9 | 15:35 |
| Jun | 79% | 69% | 5.4 | 16:37 |
| Jul | 78% | 66% | 5.2 | 16:11 |
| Aug | 79% | 67% | 4.3 | 14:35 |
| Sep | 82% | 65% | 3.3 | 12:33 |
| Oct | 86% | 73% | 1.9 | 10:33 |
| Nov | 91% | 76% | 1.0 | 8:45 |
| Dec | 93% | 76% | 0.6 | 7:51 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Southend-on-Sea is like
The warmest month is July, with an average high of 22 °C71 °F and a low of 14 °C57 °F. The coldest is February, when highs average 7 °C45 °F and lows 2 °C36 °F. There is a clear seasonal cycle, with 12.9 °C23.2 °F between the average temperature of the warmest and the coolest month.
Annual precipitation is moderate at about 681 mm27 in. Rain is spread fairly evenly through the year. The wettest month is October (72 mm2.8 in), the driest is April (38 mm1.5 in).
Relative humidity ranges from 78% in July to 93% in December. The clearest skies (lowest average cloud amount, 65%) are typical of September. Average wind speed near the ground ranges from 12 km/h (7 mph) in June to 17 km/h (10 mph) in January. Daylight lasts from about 7.8 hours in December to 16.6 hours in June.
Best time to visit Southend-on-Sea
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–September: average highs of 19 °C66 °F to 22 °C71 °F with 43 mm1.7 in to 63 mm2.5 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 7 °C45 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Southend-on-Sea
- Winter (December–February) — highs 745 to 8 °C46 °F, lows 236 to 3 °C38 °F, about 61 mm2.4 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Spring (March–May) — highs 1049 to 16 °C61 °F, lows 338 to 8 °C47 °F, about 46 mm1.8 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Summer (June–August) — highs 1967 to 22 °C71 °F, lows 1253 to 14 °C57 °F, about 59 mm2.3 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Autumn (September–November) — highs 1151 to 19 °C66 °F, lows 642 to 11 °C53 °F, about 62 mm2.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Southend-on-Sea compares
Compared with London, about 58 km to the west, Southend-on-Sea has practically the same average temperature and receives a similar amount of precipitation. The difference is largest in November (0.6 °C1 °F warmer).
Of the 66 places in the United Kingdom covered by World Climates, Southend-on-Sea is the 16th warmest by annual mean temperature and the 66th wettest by annual precipitation. See all of them on the United Kingdom climate page.
Places in other countries with the most similar temperature and rainfall pattern: Rouen (France, Cfb), Caen (France, Cfb) and Brugge (Belgium, Cfb).
The same NASA POWER grid cell also contains Basildon (pop. 144,859), Chelmsford (pop. 111,511), Maidstone (pop. 107,627) and Gillingham (pop. 101,187). Their long-term averages in this dataset are essentially the same as for Southend-on-Sea, so they do not have separate pages.
Nearby places
- Bexley 41 km · 11 °C51 °F · 709 mm28 in
- Colchester 41 km · 10 °C51 °F · 700 mm28 in
- Saint Peters 52 km · 11 °C52 °F · 697 mm27 in
- London 58 km · 11 °C51 °F · 709 mm28 in
- Ipswich 65 km · 11 °C51 °F · 717 mm28 in
- Crawley 78 km · 11 °C51 °F · 765 mm30 in
- Cambridge 84 km · 11 °C51 °F · 693 mm27 in
- Luton 87 km · 10 °C50 °F · 712 mm28 in
Frequently asked questions
What is the warmest month in Southend-on-Sea?
July is the warmest month in Southend-on-Sea, with an average high of 22 °C (71 °F) and an average low of 14 °C (57 °F).
What is the coldest month in Southend-on-Sea?
February is the coldest month, with an average high of 7 °C (45 °F) and an average low of 2 °C (36 °F).
When does it rain the most in Southend-on-Sea?
October is the wettest month with about 72 mm (2.8 in) of precipitation; April is the driest with about 38 mm (1.5 in).
What is the best time to visit Southend-on-Sea?
Judging by long-term averages, the most comfortable months are June–September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.