Water temperature in Southend-on-Sea in August

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Is it warm enough to swim in Southend-on-Sea in August? Average water temperature in Southend-on-Sea in August is 19.1°C and therefore is not suitable for comfortable swimming. The warmest sea in Southend-on-Sea in August is 22.3°C, and the coldest is 17°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Southend-on-Sea

Changes water temperature in Southend-on-Sea in August 2025, 2024

To get an accurate forecast for the water temperature in Southend-on-Sea for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Southend-on-Sea, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of August.

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 August	20°C	20.4°C	17.5°C	20.5°C
2 August	19.6°C	20°C	17.8°C	21.1°C
3 August	19.7°C	20.4°C	18.1°C	21.1°C
4 August	19.9°C	20.4°C	18.1°C	21.4°C
5 August	19.3°C	20.9°C	17.7°C	21.5°C
6 August	19.2°C	20.4°C	17.8°C	21.4°C
7 August	19.5°C	20.5°C	18°C	22°C
8 August	19.7°C	20.5°C	17.7°C	22.1°C
9 August	19.7°C	20.7°C	17.9°C	21.2°C
10 August	19.8°C	20.7°C	17.8°C	21.5°C
11 August	19.7°C	21°C	17.9°C	21.7°C
12 August	20°C	21.2°C	17.8°C	21.8°C
13 August	20.1°C	21.5°C	17.8°C	22°C
14 August	20.9°C	21.3°C	18°C	21.3°C
15 August	21.1°C	21.4°C	18°C	21.8°C

Day	2025	2024	Min	Max
16 August	20.4°C	21°C	17.6°C	21.7°C
17 August	20.4°C	20.8°C	17.7°C	21.4°C
18 August	20.5°C	20.6°C	17.7°C	22.3°C
19 August	20°C	20.7°C	17.7°C	21.9°C
20 August	19.8°C	20.7°C	17.8°C	21.7°C
21 August	19.7°C	20.3°C	17.7°C	21.5°C
22 August	19.1°C	20.1°C	17.4°C	21.6°C
23 August	19°C	19.7°C	17.5°C	21.3°C
24 August	19.3°C	19.3°C	17.5°C	21.7°C
25 August	19.6°C	19.1°C	17.4°C	20.8°C
26 August	19.4°C	19.2°C	17.4°C	21.3°C
27 August	19.3°C	19.4°C	17.4°C	21.2°C
28 August	19.6°C	19.8°C	17.5°C	20.9°C
29 August	19.3°C	19.4°C	17.2°C	21.1°C
30 August	19.3°C	19°C	17.1°C	20.9°C
31 August	18.8°C	19.2°C	17°C	20.5°C

Southend-on-Sea water temp chart in August

Average water temperature in Southend-on-Sea in August over a decade

2016	2017	2018	2019	2020
19.6°C	18.8°C	20°C	19.3°C	20.2°C

2021	2022	2023	2024	2025
18.6°C	21.3°C	19°C	20.3°C	19.6°C

Southend-on-Sea sea state in August

Chart comparing the height of waves in Southend-on-Sea in August over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Southend-on-Sea in August

Southend-on-Sea water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Temperature in neighboring cities

The nearest locations with the average water temperature in August. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Tilbury	19.1°C	17°C	22.1°C
Tankerton	19°C	17.1°C	21.9°C
Whitstable	19°C	17.1°C	21.9°C
Leysdown-on-Sea	19.1°C	17.1°C	22.3°C
Herne Bay	19°C	17.1°C	21.7°C
Minster on Sea	19.1°C	17.1°C	22.4°C
Reculver	18.9°C	17.1°C	21.7°C
Canterbury	19°C	17.1°C	22°C
Seasalter	19°C	17.1°C	22°C
Shoeburyness	19.2°C	17.1°C	22.6°C

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Our report for Southend-on-Sea is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature