Ballyliffin weather in September 2025

Expect 15°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Ballyliffin in September. Check more long-term weather averages for Ballyliffin in September before you book your next holiday to Ireland in 2025/2026.

  • 15°C maximum daytime temperature in September in Ballyliffin15
    15°C max day temperature
  • 3 hours of sunshine per day
  • 21 days with some rainfall in September in Ballyliffin21
    21 days with some rainfall
  • 9°C minimum night-time temperature in September in Ballyliffin9
    9°C min night temperature
  • 13 hours of daylight per day in September in Ballyliffin13
    13 hours of daylight per day
  • No heat & humidity in September in Ballyliffin0
    No heat & humidity
  • 117 mm monthly rainfall in September in Ballyliffin117
    117 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Ballyliffin3
    3 (Moderate) UV index
  • 14°C sea temperature in September in Ballyliffin14
    14°C sea temperature

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The September weather guide for Ireland (Ballyliffin) 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 Ballyliffin in September?

Daytime temperatures usually reach 15°C in Ballyliffin in September, falling to 9°C at night.

How sunny is it in Ballyliffin in September?

There are normally 3 hours of bright sunshine each day in Ballyliffin in September - that's 27% of daylight hours.

How warm is the sea around Ballyliffin in September?

The average sea temperature around Ballyliffin in September is 14°C.

Does it rain in Ballyliffin in September?

There are usually 21 days with some rain in Ballyliffin in September and the average monthly rainfall is 117mm.

Ballyliffin September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:36 19:22
Monday, 15th September 2025 06:02 18:46
Tuesday, 30th September 2025 06:31 18:07

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