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United Kingdom weather

Weather in Southend-on-Sea for September 2026

Your guide to Southend-on-Sea weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Southend-on-Sea at the beginning of September is 20.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.3 °C by the end of September.

    • Rain 🌧️

  • Southend-on-Sea in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 90.7 mm.

    • More

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Average dry days
11
Dry days
Average rainy days
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/14°
Temperatures
Average wind speed
24 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Southend-on-Sea Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
20°
2
Light rain shower
21°
3
Light rain shower
21°
4
Light rain shower
19°
5
Overcast
20°
6
Sunny
22°
7
Partly cloudy
22°
8
Overcast
22°
9
Patchy rain possible
20°
10
Partly cloudy
22°
11
Cloudy
19°
12
Overcast
17°
13
Overcast
17°
14
Partly cloudy
19°
15
Sunny
20°
16
Sunny
19°
17
Patchy rain possible
19°
18
Moderate or heavy rain with thunder
21°
19
Light drizzle
21°
20
Moderate rain
20°
21
Patchy light drizzle
17°
22
Light rain shower
17°
23
Patchy rain possible
17°
24
Overcast
17°
25
Patchy rain possible
18°
26
Light rain shower
18°
27
Cloudy
17°
28
Overcast
17°
29
Light rain
17°
30
Cloudy
17°

Temperatures trend during September in Southend-on-Sea

See the weather trend as well as the moving average line

September weather in Southend-on-Sea day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
 20° /15° 3.4 mm 5
2 Sept. Light rain shower
Light rain shower
 21° /15° 1.3 mm 5
3 Sept. Light rain shower
Light rain shower
 21° /15° 1.9 mm 5
4 Sept. Light rain shower
Light rain shower
 19° /15° 2.3 mm 5
5 Sept. Overcast
Overcast
 20° /14° 1.9 mm 5
6 Sept. Sunny
Sunny
 22° /16° 0.8 mm 5
7 Sept. Partly cloudy
Partly cloudy
 22° /16° 4.9 mm 5
8 Sept. Overcast
Overcast
 22° /15° 1.6 mm 5
9 Sept. Patchy rain possible
Patchy rain possible
 20° /14° 0.1 mm 5
10 Sept. Partly cloudy
Partly cloudy
 22° /15° 1.5 mm 5
11 Sept. Cloudy
Cloudy
 19° /13° 0.7 mm 4
12 Sept. Overcast
Overcast
 17° /12° 0.4 mm 4
13 Sept. Overcast
Overcast
 17° /11° 1.5 mm 4
14 Sept. Partly cloudy
Partly cloudy
 19° /11° 0.7 mm 5
15 Sept. Sunny
Sunny
 20° /13° 0.1 mm 5
16 Sept. Sunny
Sunny
 19° /13° 0 mm 5
17 Sept. Patchy rain possible
Patchy rain possible
 19° /14° 0.8 mm 4
18 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 21° /15° 1.5 mm 5
19 Sept. Light drizzle
Light drizzle
 21° /15° 0.8 mm 5
20 Sept. Moderate rain
Moderate rain
 20° /14° 8.3 mm 4
21 Sept. Patchy light drizzle
Patchy light drizzle
 17° /12° 3 mm 4
22 Sept. Light rain shower
Light rain shower
 17° /12° 8.6 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 17° /10° 1.1 mm 4
24 Sept. Overcast
Overcast
 17° /12° 0.5 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 18° /13° 4.7 mm 4
26 Sept. Light rain shower
Light rain shower
 18° /12° 6.1 mm 4
27 Sept. Cloudy
Cloudy
 17° /11° 2.6 mm 4
28 Sept. Overcast
Overcast
 17° /10° 0 mm 4
29 Sept. Light rain
Light rain
 17° /11° 0.9 mm 4
30 Sept. Cloudy
Cloudy
 17° /11° 6.8 mm 4
Next
Important Notice
Our weather forecast for Southend-on-Sea in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Southend-on-Sea forecast closer to your planned date for the most up-to-date weather information.
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Southend-on-Sea in September - FAQ

What are the expected maximum and minimum temperatures in Southend-on-Sea during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Southend-on-Sea during September?
Moderate rainfall is anticipated in Southend-on-Sea during September, with a total of 90.7 mm spread over approximately 19 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Southend-on-Sea during September?
The average wind speed in Southend-on-Sea during September is 24 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Southend-on-Sea

Explore the daily rainfall trends and prepare for Southend-on-Seas September weather 💧

UV exposure in Southend-on-Sea during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Southend-on-Sea?

Get accurate weather forecasts for Southend-on-Sea, located at latitude 51.538 and longitude 0.714. Stay updated with localized weather information tailored for Southend-on-Sea.

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