Portstewart weather in September 2024

Expect 59°F daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Portstewart in September. Check more long-term weather averages for Portstewart in September before you book your next holiday to Northern Ireland in 2024/2025.

59
59°F max day temperature
3
3 hours of sunshine per day
20
20 days with some rainfall
48
48°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
4.2
4.2 inches of monthly rainfall
3
3 (Moderate) UV index
57
57°F sea temperature

More about Portstewart

Portstewart by month

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

Recommended for Northern Ireland

Hopper: Exclusive deals on hotels worldwide

Sale

Check out exclusive hotel deals available in Hopper App
Save on hotels, flights & car hire in 2023/2024
Download & use for FREE. No hidden charges

Go to Hopper deal >>

The September weather guide for Northern Ireland (Portstewart) 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) | Imperial (°F)

More about the UK

How warm is it in Portstewart in September?

Daytime temperatures usually reach 59°F in Portstewart in September, falling to 48°F at night.

How sunny is it in Portstewart in September?

There are normally 3 hours of bright sunshine each day in Portstewart in September - that's 26% of daylight hours.

How warm is the sea around Portstewart in September?

The average sea temperature around Portstewart in September is 57°F.

Does it rain in Portstewart in September?

There are usually 20 days with some rain in Portstewart in September and the average monthly rainfall is 4.2 inches.

Portstewart September sunrise & sunset times

Browse the sunrise and sunset times for Portstewart in September 2024. Select a month to view Portstewart sunrise and sunset times for the next 12 months.

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