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Guernsey weather in September 2021
- 1818°C max day temperature
- 1313 days with some rainfall
- 1313°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 6363 mm of monthly rainfall
- 44 (Moderate) UV index
- 1717°C sea temperature
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The September weather guide for Guernsey 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.
How hot is it in Guernsey in September?
Daytime temperatures usually reach 18°C in St Peter Port, Guernsey in September, falling to 13°C at night.
How sunny is it in Guernsey in September?
There are normally 6 hours of bright sunshine each day in St Peter Port, Guernsey in September - that's 45% of daylight hours.
How warm is the sea around Guernsey in September?
The average sea temperature around St Peter Port, Guernsey in September is 17°C.
Does it rain in Guernsey in September?
There are usually 13 days with some rain in St Peter Port, Guernsey in September and the average monthly rainfall is 63mm.
Metric (°C / mm) | Imperial (°F / inches)
Guernsey sunrise & sunset times for September 2021
Browse the sunrise & sunset times for Guernsey in September 2021. Select a month to view Guernsey sunrise & sunset times for the next twelve months. The Guernsey sunrise & sunset times shown below are for St Peter Port.
|Date||Sunrise times||Sunset times|
|Wednesday, 1st September 2021||06:26||19:53|
|Wednesday, 15th September 2021||06:47||19:23|
|Thursday, 30th September 2021||07:09||18:51|
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