Scilly Isles weather in September 2026

Q: How hot is it in Scilly Isles in September?

Daytime temperatures usually reach 19°C in Scilly Isles in September, falling to 11°C at night.

Q: How sunny is it in Scilly Isles in September?

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

Q: Does it rain in Scilly Isles in September?

There are usually 11 days with some rain in Scilly Isles in September and the average monthly rainfall is 55mm.

Expect daytime maximum temperatures of 17°C in Scilly Isles, 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 89 mm of rainfall in the month.

17
17°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
89
89 mm of monthly rainfall
4
4 (Moderate) UV index
16
16°C sea temperature

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The September weather guide for England (Scilly Isles) 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 Scilly Isles in September?

Daytime temperatures usually reach 19°C in Scilly Isles in September, falling to 11°C at night.

How sunny is it in Scilly Isles in September?

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

Does it rain in Scilly Isles in September?

There are usually 11 days with some rain in Scilly Isles in September and the average monthly rainfall is 55mm.

Scilly Isles September sunrise & sunset times

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

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