Newhaven weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Newhaven in September. Check more long-term weather averages for Newhaven in September before you book your next holiday to England in 2025/2026.

18
18°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
81
81 mm of monthly rainfall
4
4 (Moderate) UV index
17
17°C sea temperature

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The September weather guide for England (Newhaven) 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 Newhaven in September?

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

How sunny is it in Newhaven in September?

There are normally 5 hours of bright sunshine each day in Newhaven in September - that's 41% of daylight hours.

How warm is the sea around Newhaven in September?

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

Does it rain in Newhaven in September?

There are usually 12 days with some rain in Newhaven in September and the average monthly rainfall is 81mm.

Newhaven September sunrise & sunset times

Browse the sunrise and sunset times for Newhaven in September 2025. Select a month to view Newhaven sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Monday, 1st September 2025	05:14	18:45
Monday, 15th September 2025	05:35	18:13
Tuesday, 30th September 2025	05:59	17:40

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England - quick facts
Time difference	UK +0 hours
Language(s)	English
Currency	Pound Sterling
Electricity	G plug (230V)
Driving side	Left
Tourist info	Visit England