Clonmel weather in September 2025

Expect 63°F daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Clonmel in September. Check more long-term weather averages for Clonmel in September before you book your next holiday to Ireland in 2025/2026.

  • 63°F maximum daytime temperature in September in Clonmel63
    63°F max day temperature
  • 4 hours of sunshine per day
  • 17 days with some rainfall in September in Clonmel17
    17 days with some rainfall
  • 48°F minimum night-time temperature in September in Clonmel48
    48°F min night temperature
  • 13 hours of daylight per day in September in Clonmel13
    13 hours of daylight per day
  • No heat & humidity in September in Clonmel0
    No heat & humidity
  • 4.1 inches monthly rainfall in September in Clonmel4.1
    4.1 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Clonmel4
    4 (Moderate) UV index

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Clonmel by month

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The September weather guide for Ireland (Clonmel) 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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How warm is it in Clonmel in September?

Daytime temperatures usually reach 63°F in Clonmel in September, falling to 48°F at night.

How sunny is it in Clonmel in September?

There are normally 4 hours of bright sunshine each day in Clonmel in September - that's 31% of daylight hours.

Does it rain in Clonmel in September?

There are usually 17 days with some rain in Clonmel in September and the average monthly rainfall is 4.1 inches.

Clonmel September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:42 19:18
Monday, 15th September 2025 06:05 18:45
Tuesday, 30th September 2025 06:30 18:10

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