Armagh weather in September 2025

Expect 61°F daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Armagh in September. Check more long-term weather averages for Armagh in September before you book your next holiday to Northern Ireland in 2025/2026.

  • 61°F maximum daytime temperature in September in Armagh61
    61°F max day temperature
  • 4 hours of sunshine per day
  • 18 days with some rainfall in September in Armagh18
    18 days with some rainfall
  • 48°F minimum night-time temperature in September in Armagh48
    48°F min night temperature
  • 13 hours of daylight per day in September in Armagh13
    13 hours of daylight per day
  • No heat & humidity in September in Armagh0
    No heat & humidity
  • 3.0 inches monthly rainfall in September in Armagh3.0
    3.0 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Armagh3
    3 (Moderate) UV index

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The September weather guide for Northern Ireland (Armagh) 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)

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More about the UK

How warm is it in Armagh in September?

Daytime temperatures usually reach 61°F in Armagh in September, falling to 48°F at night.

How sunny is it in Armagh in September?

There are normally 4 hours of bright sunshine each day in Armagh in September - that's 28% of daylight hours.

Does it rain in Armagh in September?

There are usually 18 days with some rain in Armagh in September and the average monthly rainfall is 3.0 inches.

Armagh September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:34 19:17
Monday, 15th September 2025 06:00 18:43
Tuesday, 30th September 2025 06:27 18:05

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