Clonmel weather in September 2026

Expect daytime maximum temperatures of 17°C in Clonmel, Ireland in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 17 days with some rainfall and typically 104 mm of rainfall in the month.

  • 17°C maximum daytime temperature in September in Clonmel17
    17°C max day temperature
  • 4 hours of sunshine per day
  • 17 days with some rainfall in September in Clonmel17
    17 days with some rainfall
  • 9°C minimum night-time temperature in September in Clonmel9
    9°C 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
  • 104 mm monthly rainfall in September in Clonmel104
    104 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Clonmel4
    4 (Moderate) UV index

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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 / mm)  |  Imperial (°F / inches)

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More about Ireland

How warm is it in Clonmel in September?

Daytime temperatures usually reach 17°C in Clonmel in September, falling to 9°C 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 104mm.

Clonmel September sunrise & sunset times

Browse the sunrise and sunset times for Clonmel in September 2026. Select a month to view Clonmel sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2026 05:42 19:19
Tuesday, 15th September 2026 06:05 18:46
Wednesday, 30th September 2026 06:30 18:10

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