Redcastle weather in September 2025

Expect 59°F daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Redcastle in September. Check more long-term weather averages for Redcastle in September before you book your next holiday to Ireland in 2025/2026.

  • 59°F maximum daytime temperature in September in Redcastle59
    59°F max day temperature
  • 3 hours of sunshine per day
  • 21 days with some rainfall in September in Redcastle21
    21 days with some rainfall
  • 48°F minimum night-time temperature in September in Redcastle48
    48°F min night temperature
  • 13 hours of daylight per day in September in Redcastle13
    13 hours of daylight per day
  • No heat & humidity in September in Redcastle0
    No heat & humidity
  • 4.1 inches monthly rainfall in September in Redcastle4.1
    4.1 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Redcastle3
    3 (Moderate) UV index
  • 57°F sea temperature in September in Redcastle57
    57°F sea temperature

More about Redcastle

Redcastle by month

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

Recommended for Ireland

Secret Flight Club promo code: 40% off memberships

  • Save 40% on annual memberships with exclusive offer
  • Sign up to Secret Flight Club for FREE 7-day trial
  • Members usually save up to 81% with flight deals
Show discount codeShow discount code ******L40
Redeem Secret Flight Club discount code >>

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Secret Flight Club offers

The September weather guide for Ireland (Redcastle) 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)  |  Imperial (°F)

Back to top

More about Ireland

How warm is it in Redcastle in September?

Daytime temperatures usually reach 59°F in Redcastle in September, falling to 48°F at night.

How sunny is it in Redcastle in September?

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

How warm is the sea around Redcastle in September?

The average sea temperature around Redcastle in September is 57°F.

Does it rain in Redcastle in September?

There are usually 21 days with some rain in Redcastle in September and the average monthly rainfall is 4.1 inches.

Redcastle September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:35 19:21
Monday, 15th September 2025 06:01 18:45
Tuesday, 30th September 2025 06:29 18:06

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^