Omagh weather in September 2025

Expect 16°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Omagh in September. Check more long-term weather averages for Omagh in September before you book your next holiday to Northern Ireland in 2025/2026.

  • 16°C maximum daytime temperature in September in Omagh16
    16°C max day temperature
  • 3 hours of sunshine per day
  • 21 days with some rainfall in September in Omagh21
    21 days with some rainfall
  • 8°C minimum night-time temperature in September in Omagh8
    8°C min night temperature
  • 13 hours of daylight per day in September in Omagh13
    13 hours of daylight per day
  • No heat & humidity in September in Omagh0
    No heat & humidity
  • 100 mm monthly rainfall in September in Omagh100
    100 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Omagh3
    3 (Moderate) UV index

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The September weather guide for Northern Ireland (Omagh) 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 Omagh in September?

Daytime temperatures usually reach 16°C in Omagh in September, falling to 8°C at night.

How sunny is it in Omagh in September?

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

Does it rain in Omagh in September?

There are usually 21 days with some rain in Omagh in September and the average monthly rainfall is 100mm.

Omagh September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:37 19:20
Monday, 15th September 2025 06:02 18:45
Tuesday, 30th September 2025 06:30 18:07

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