Downpatrick weather in September 2025

Q: How warm is it in Downpatrick in September?

Daytime temperatures usually reach 16°C in Downpatrick in September, falling to 9°C at night.

Q: How sunny is it in Downpatrick in September?

There are normally 4 hours of bright sunshine each day in Downpatrick in September - that's 32% of daylight hours.

Q: How warm is the sea around Downpatrick in September?

The average sea temperature around Downpatrick in September is 14°C.

Q: Does it rain in Downpatrick in September?

There are usually 16 days with some rain in Downpatrick in September and the average monthly rainfall is 85mm.

Expect daytime maximum temperatures of 16°C in Downpatrick, Northern Ireland in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 16 days with some rainfall and typically 85 mm of rainfall in the month.

16
16°C max day temperature
4
4 hours of sunshine per day
16
16 days with some rainfall
9
9°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
85
85 mm of monthly rainfall
3
3 (Moderate) UV index
14
14°C sea temperature

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The September weather guide for Northern Ireland (Downpatrick) 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 the UK

How warm is it in Downpatrick in September?

Daytime temperatures usually reach 16°C in Downpatrick in September, falling to 9°C at night.

How sunny is it in Downpatrick in September?

There are normally 4 hours of bright sunshine each day in Downpatrick in September - that's 32% of daylight hours.

How warm is the sea around Downpatrick in September?

The average sea temperature around Downpatrick in September is 14°C.

Does it rain in Downpatrick in September?

There are usually 16 days with some rain in Downpatrick in September and the average monthly rainfall is 85mm.

Downpatrick September sunrise & sunset times

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

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