Ipswich weather in September 2025

Q: How hot is it in Ipswich in September?

Daytime temperatures usually reach 19°C in Ipswich in September, falling to 10°C at night.

Q: How sunny is it in Ipswich in September?

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

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

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

Q: Does it rain in Ipswich in September?

There are usually 12 days with some rain in Ipswich in September and the average monthly rainfall is 51mm.

Expect daytime maximum temperatures of 19°C in Ipswich, England in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 12 days with some rainfall and typically 51 mm of rainfall in the month.

19
19°C max day temperature
5
5 hours of sunshine per day
12
12 days with some rainfall
10
10°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
51
51 mm of monthly rainfall
4
4 (Moderate) UV index
17
17°C sea temperature

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The September weather guide for England (Ipswich) 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)