Killybegs weather in September 2025

Expect 16°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Killybegs in September. Check more long-term weather averages for Killybegs in September before you book your next holiday to Ireland in 2025/2026.

  • 16°C maximum daytime temperature in September in Killybegs16
    16°C max day temperature
  • 3 hours of sunshine per day
  • 22 days with some rainfall in September in Killybegs22
    22 days with some rainfall
  • 8°C minimum night-time temperature in September in Killybegs8
    8°C min night temperature
  • 13 hours of daylight per day in September in Killybegs13
    13 hours of daylight per day
  • No heat & humidity in September in Killybegs0
    No heat & humidity
  • 141 mm monthly rainfall in September in Killybegs141
    141 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Killybegs3
    3 (Moderate) UV index
  • 15°C sea temperature in September in Killybegs15
    15°C sea temperature

More about Killybegs

Killybegs by month

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

Daytime temperatures usually reach 16°C in Killybegs in September, falling to 8°C at night.

How sunny is it in Killybegs in September?

There are normally 3 hours of bright sunshine each day in Killybegs in September - that's 26% of daylight hours.

How warm is the sea around Killybegs in September?

The average sea temperature around Killybegs in September is 15°C.

Does it rain in Killybegs in September?

There are usually 22 days with some rain in Killybegs in September and the average monthly rainfall is 141mm.

Killybegs September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:41 19:25
Monday, 15th September 2025 06:07 18:50
Tuesday, 30th September 2025 06:35 18:12

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