Wrexham weather in September 2026

Q: How hot is it in Wrexham in September?

Daytime temperatures usually reach 18°C in Wrexham in September, falling to 10°C at night.

Q: How sunny is it in Wrexham in September?

There are normally 5 hours of bright sunshine each day in Wrexham in September - that's 37% of daylight hours.

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

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

Q: Does it rain in Wrexham in September?

There are usually 15 days with some rain in Wrexham in September and the average monthly rainfall is 91mm.

Expect daytime maximum temperatures of 18°C in Wrexham, Wales in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 15 days with some rainfall and typically 58 mm of rainfall in the month.

18
18°C max day temperature
4
4 hours of sunshine per day
15
15 days with some rainfall
10
10°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
58
58 mm of monthly rainfall
4
4 (Moderate) UV index

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The September weather guide for Wales (Wrexham) 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)