Clifden weather in September 2025

Expect 16°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Clifden in September. Check more long-term weather averages for Clifden in September before you book your next holiday to Ireland in 2025/2026.

  • 16°C maximum daytime temperature in September in Clifden16
    16°C max day temperature
  • 4 hours of sunshine per day
  • 21 days with some rainfall in September in Clifden21
    21 days with some rainfall
  • 10°C minimum night-time temperature in September in Clifden10
    10°C min night temperature
  • 13 hours of daylight per day in September in Clifden13
    13 hours of daylight per day
  • No heat & humidity in September in Clifden0
    No heat & humidity
  • 116 mm monthly rainfall in September in Clifden116
    116 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Clifden4
    4 (Moderate) UV index
  • 15°C sea temperature in September in Clifden15
    15°C sea temperature

More about Clifden

Clifden by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ireland

Red Carnation Hotels: Top 5-star luxury hotel offers

  • Explore Red Carnation Hotels across Europe, Africa & Florida
  • Including London, Edinburgh, Ireland & Guernsey
  • Plus South Africa & Xigera Safari Lodge in Botswana
Go to Red Carnation Hotels deal >>

View all Red Carnation Hotels offers

The September weather guide for Ireland (Clifden) 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)

Back to top

More about Ireland

How warm is it in Clifden in September?

Daytime temperatures usually reach 16°C in Clifden in September, falling to 10°C at night.

How sunny is it in Clifden in September?

There are normally 4 hours of bright sunshine each day in Clifden in September - that's 28% of daylight hours.

How warm is the sea around Clifden in September?

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

Does it rain in Clifden in September?

There are usually 21 days with some rain in Clifden in September and the average monthly rainfall is 116mm.

Clifden September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:50 19:29
Monday, 15th September 2025 06:14 18:55
Tuesday, 30th September 2025 06:40 18:19

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^