Southwold weather in September 2026

Q: How hot is it in Southwold in September?

Daytime temperatures usually reach 18°C in Southwold in September, falling to 11°C at night.

Q: How sunny is it in Southwold in September?

There are normally 5 hours of bright sunshine each day in Southwold in September - that's 39% of daylight hours.

Q: How warm is the sea around Southwold in September?

The average sea temperature around Southwold in September is 17°C.

Q: Does it rain in Southwold in September?

There are usually 15 days with some rain in Southwold in September and the average monthly rainfall is 53mm.

Expect daytime maximum temperatures of 18°C in Southwold, England in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 53 mm of rainfall in the month.

18
18°C max day temperature
5
5 hours of sunshine per day
15
15 days with some rainfall
11
11°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
53
53 mm of monthly rainfall
4
4 (Moderate) UV index
17
17°C sea temperature

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The September weather guide for England (Southwold) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

More about England

How hot is it in Southwold in September?

Daytime temperatures usually reach 18°C in Southwold in September, falling to 11°C at night.

How sunny is it in Southwold in September?

There are normally 5 hours of bright sunshine each day in Southwold in September - that's 39% of daylight hours.

How warm is the sea around Southwold in September?

The average sea temperature around Southwold in September is 17°C.

Does it rain in Southwold in September?

There are usually 15 days with some rain in Southwold in September and the average monthly rainfall is 53mm.

Southwold September sunrise & sunset times

Browse the sunrise and sunset times for Southwold in September 2026. Select a month to view Southwold sunrise and sunset times for the next 12 months.

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