Kinsale weather in September 2025

Expect 17°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Kinsale in September. Check more long-term weather averages for Kinsale in September before you book your next holiday to Ireland in 2025/2026.

  • 17°C maximum daytime temperature in September in Kinsale17
    17°C max day temperature
  • 4 hours of sunshine per day
  • 18 days with some rainfall in September in Kinsale18
    18 days with some rainfall
  • 10°C minimum night-time temperature in September in Kinsale10
    10°C min night temperature
  • 13 hours of daylight per day in September in Kinsale13
    13 hours of daylight per day
  • No heat & humidity in September in Kinsale0
    No heat & humidity
  • 103 mm monthly rainfall in September in Kinsale103
    103 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Kinsale4
    4 (Moderate) UV index
  • 15°C sea temperature in September in Kinsale15
    15°C sea temperature

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

Daytime temperatures usually reach 17°C in Kinsale in September, falling to 10°C at night.

How sunny is it in Kinsale in September?

There are normally 4 hours of bright sunshine each day in Kinsale in September - that's 33% of daylight hours.

How warm is the sea around Kinsale in September?

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

Does it rain in Kinsale in September?

There are usually 18 days with some rain in Kinsale in September and the average monthly rainfall is 103mm.

Kinsale September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:47 19:20
Monday, 15th September 2025 06:09 18:48
Tuesday, 30th September 2025 06:33 18:13

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