Waterford weather in September 2025

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

  • 17°C maximum daytime temperature in September in Waterford17
    17°C max day temperature
  • 4 hours of sunshine per day
  • 15 days with some rainfall in September in Waterford15
    15 days with some rainfall
  • 9°C minimum night-time temperature in September in Waterford9
    9°C min night temperature
  • 13 hours of daylight per day in September in Waterford13
    13 hours of daylight per day
  • No heat & humidity in September in Waterford0
    No heat & humidity
  • 96 mm monthly rainfall in September in Waterford96
    96 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Waterford4
    4 (Moderate) UV index
  • 15°C sea temperature in September in Waterford15
    15°C sea temperature

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

Daytime temperatures usually reach 17°C in Waterford in September, falling to 9°C at night.

How sunny is it in Waterford in September?

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

How warm is the sea around Waterford in September?

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

Does it rain in Waterford in September?

There are usually 15 days with some rain in Waterford in September and the average monthly rainfall is 96mm.

Waterford September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:40 19:16
Monday, 15th September 2025 06:03 18:43
Tuesday, 30th September 2025 06:28 18:08

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