Downpatrick weather in September 2025

Expect 16°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Downpatrick in September. Check more long-term weather averages for Downpatrick in September before you book your next holiday to Northern Ireland in 2025/2026.

  • 16°C maximum daytime temperature in September in Downpatrick16
    16°C max day temperature
  • 4 hours of sunshine per day
  • 16 days with some rainfall in September in Downpatrick16
    16 days with some rainfall
  • 9°C minimum night-time temperature in September in Downpatrick9
    9°C min night temperature
  • 13 hours of daylight per day in September in Downpatrick13
    13 hours of daylight per day
  • No heat & humidity in September in Downpatrick0
    No heat & humidity
  • 85 mm monthly rainfall in September in Downpatrick85
    85 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Downpatrick3
    3 (Moderate) UV index
  • 14°C sea temperature in September in Downpatrick14
    14°C sea temperature

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Downpatrick by month

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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)

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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.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:31 19:14
Monday, 15th September 2025 05:56 18:39
Tuesday, 30th September 2025 06:23 18:01

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