Portsmouth weather in September 2024

Expect 31°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Portsmouth in September. Check more long-term weather averages for Portsmouth in September before you book your next holiday to Dominica in 2024/2025.

31
31°C max day temperature
7
7 hours of sunshine per day
22
22 days with some rainfall
24
24°C min night temperature
12
12 hours of daylight per day
H
High heat & humidity
269
269 mm of monthly rainfall
11
11+ (Extreme) UV index
29
29°C sea temperature

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The September weather guide for Dominica (Portsmouth) 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)

How hot is it in Portsmouth in September?

Daytime temperatures usually reach 31°C in Portsmouth in September with high heat and humidity, falling to 24°C at night.

How sunny is it in Portsmouth in September?

There are normally 7 hours of bright sunshine each day in Portsmouth in September - that's 58% of daylight hours.

How warm is the sea around Portsmouth in September?

The average sea temperature around Portsmouth in September is 29°C.

Does it rain in Portsmouth in September?

There are usually 22 days with some rain in Portsmouth in September and the average monthly rainfall is 269mm.

What is the chance of a hurricane in Portsmouth in September?

On average 1.2 days in September in Portsmouth are likely to be affected by the passage of one or more tropical storms.

Portsmouth September sunrise & sunset times

Browse the sunrise and sunset times for Portsmouth in September 2024. Select a month to view Portsmouth 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
Sunday, 1st September 2024	05:53	18:18
Sunday, 15th September 2024	05:54	18:07
Monday, 30th September 2024	05:56	17:55

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Dominica - quick facts
Time difference	UK -4 hours
Language(s)	English
Currency	Eastern Caribbean Dollar
Electricity	D + G plug (230V)
Driving side	Left
Why visit?	Beaches Nature
Tourist info	Discover Dominica Authority