Southend-on-Sea, United Kingdom Climate & Monthly Averages
Southend-on-Sea has an oceanic climate. July is the hottest month, averaging 72° by day; January is the coldest at 46°.
How weather changes through the year in Southend-on-Sea
Southend-on-Sea has an oceanic climate. Average highs run from 46°F (8°C) in January to 72°F (22°C) in July, and the city records roughly 135 days of measurable precipitation a year.
Southend-on-Sea climate quick facts
- Hottest month: July - highs near 72°F (22°C)
- Coldest month: January - highs near 46°F (8°C)
- Decade extremes (2015-2024): 101°F (38°C) high · 19°F (-7°C) low
- Wettest month: October (12 rainy days) · Sunniest: June (11.9 h sun/day)
- Climate type: oceanic
- Annual swing: 14°C between the average warmest and coolest month · day to night: 6°C
- Snow: about 2 days a year
- Average humidity: 78%
Temperatures, rain and sunshine
Sunshine averages 8.0 hours a day over the year - duller than about 83% of the cities we track, peaking in June at 11.9 hours. At its warmest, in July, Southend-on-Sea runs to 72°F (22°C) in the afternoon and back to 58°F (15°C) by dawn. January is the coolest month, with highs of 46°F (8°C) and lows near 36°F (2°C).
The gridded 2015-2024 daily record for this location tops out at 101°F (38°C) and bottoms at 19°F (-7°C) - decade extremes, not all-time station records. Snow falls on roughly 2 days a year, mostly January through March.
Four of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is June through September. October is the wettest month at 2.9 inches (75 mm) over 12 days; April is the driest.
Where Southend-on-Sea sits among other climates
- Southend-on-Sea sits close to the middle of our dataset on most measures: 53°F (12°C) as an annual average, 28.0 inches (712 mm) of precipitation and 8.0 hours of sun a day.
These comparisons use the same ten-year window for every city in the dataset.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 46° | 36° | 12 | 2.4 in | 4.5 h/day | 8.3 h | 38% | 85% |
| February | 48° | 38° | 12 | 2.0 in | 5.6 h/day | 9.9 h | 42% | 81% |
| March | 51° | 40° | 13 | 2.3 in | 6.9 h/day | 11.7 h | 43% | 79% |
| April | 55° | 42° | 10 | 1.7 in | 10.1 h/day | 13.8 h | 32% | 75% |
| May | 62° | 48° | 11 | 2.1 in | 11.1 h/day | 15.6 h | 35% | 74% |
| June | 69° | 54° | 9 | 2.3 in | 11.9 h/day | 16.6 h | 31% | 73% |
| July | 72° | 58° | 12 | 2.2 in | 11.7 h/day | 16.2 h | 37% | 70% |
| August | 72° | 58° | 10 | 2.5 in | 10.7 h/day | 14.6 h | 32% | 73% |
| September | 67° | 54° | 11 | 2.2 in | 8.7 h/day | 12.6 h | 37% | 77% |
| October | 60° | 49° | 12 | 2.9 in | 6.4 h/day | 10.5 h | 38% | 82% |
| November | 52° | 43° | 12 | 2.7 in | 4.6 h/day | 8.8 h | 39% | 85% |
| December | 49° | 40° | 13 | 2.7 in | 3.6 h/day | 7.8 h | 41% | 87% |
Southend-on-Sea month by month
Each card shows the average high and low. The bar places that month between Southend-on-Sea's coldest night and warmest afternoon.
January
- Rain
- 12 days
- Sunshine
- 4.5 h
- Daylight
- 8.3 h
February
- Rain
- 12 days
- Sunshine
- 5.6 h
- Daylight
- 9.9 h
March
- Rain
- 13 days
- Sunshine
- 6.9 h
- Daylight
- 11.7 h
April
- Rain
- 10 days
- Sunshine
- 10.1 h
- Daylight
- 13.8 h
May
- Rain
- 11 days
- Sunshine
- 11.1 h
- Daylight
- 15.6 h
June
- Rain
- 9 days
- Sunshine
- 11.9 h
- Daylight
- 16.6 h
July
- Rain
- 12 days
- Sunshine
- 11.7 h
- Daylight
- 16.2 h
August
- Rain
- 10 days
- Sunshine
- 10.7 h
- Daylight
- 14.6 h
September
- Rain
- 11 days
- Sunshine
- 8.7 h
- Daylight
- 12.6 h
October
- Rain
- 12 days
- Sunshine
- 6.4 h
- Daylight
- 10.5 h
November
- Rain
- 12 days
- Sunshine
- 4.6 h
- Daylight
- 8.8 h
December
- Rain
- 13 days
- Sunshine
- 3.6 h
- Daylight
- 7.8 h
Looking for warmer alternatives? Browse warm places by month, or compare Southend-on-Sea's coolest part of the year: January, February, December.
A season-by-season guide to Southend-on-Sea
Spring (March through May)
Spring in Southend-on-Sea stays on the cool side of mild, with daytime highs averaging 56°F (14°C) and nights around 44°F (6°C); rain falls on around 34 of the 90 days.
Summer (June through August)
Summer in Southend-on-Sea brings comfortable warmth, with daytime highs averaging 71°F (22°C) and nights around 57°F (14°C); rain falls on around 31 of the 90 days. Daylight is generous - around 11.4 hours of sun a day.
Fall (September through November)
Fall is mild here - highs near 60°F (15°C), nights near 49°F (9°C), and rain falls on around 35 of the 90 days.
Winter (December through February)
Winter is brisk and cold here - highs near 48°F (9°C), nights near 38°F (4°C), and rain falls on around 36 of the 90 days.
Questions people ask about Southend-on-Sea's climate
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The most useful weather window for Southend-on-Sea
Best time to visit Southend-on-Sea
Aim for May to October if you get the choice: warm days, manageable rainfall and plenty of daylight line up, and highs average 67°F (20°C) against roughly 11 wet days a month. For the same question asked the other way round, see where else is warm in May.
What to pack
Pack for Southend-on-Sea with a warm jacket and layers for the cooler season and a compact umbrella or rain shell. Even in July, lows of 58°F (15°C) make an extra layer worth the space.
Southend-on-Sea temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.