Clonmel weather in September 2026

Expect daytime maximum temperatures of 63°F 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 4.1 inches of rainfall in the month.

  • 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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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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More about Ireland

How warm is it in Clonmel in September?

Daytime temperatures usually reach 63°F in Clonmel in September, falling to 50°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 33% of daylight hours.

How warm is the sea around Clonmel in September?

The average sea temperature around Clonmel in September is 57°F.

Does it rain in Clonmel in September?

There are usually 15 days with some rain in Clonmel in September and the average monthly rainfall is 2.5 inches.

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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