Dublin weather in September 2020

  • 17°C maximum daytime temperature in September in Dublin17
    17°C max day temperature
  • 4 hours of sunshine per day
  • 15 days with some rainfall in September in Dublin15
    15 days with some rainfall
  • 10°C minimum night-time temperature in September in Dublin10
    10°C min night temperature
  • 13 hours of daylight per day in September in Dublin13
    13 hours of daylight per day
  • No heat & humidity in September in Dublin0
    No heat & humidity
  • 64 mm monthly rainfall in September in Dublin64
    64 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Dublin4
    4 (Moderate) UV index
  • 14°C sea temperature in September in Dublin14
    14°C sea temperature
  • Top deals & discounts
  • Dublin weather overview
  • Dublin climate averages by month
  • More destinations
  • Best time to go to Dublin
  • Dublin 5-day weather forecast

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

The September weather guide for Dublin, Ireland 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.

  • Check out the best deals on holidays & hotels worldwide
  • Select a destination to see popular hotels & apartments
  • Filter deals by TripAdvisor rating, star rating, facilities & more

How warm is it in Dublin in September?

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

How sunny is it in Dublin in September?

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

How warm is the sea around Dublin in September?

The average sea temperature around Dublin in September is 14°C.

Does it rain in Dublin in September?

There are usually 15 days with some rain in Dublin in September and the average monthly rainfall is 64mm.

Dublin sunrise & sunset times for September 2020

Browse the sunrise & sunset times for Dublin in September 2020. Select a month to view Dublin sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2020 06:35 20:13
Tuesday, 15th September 2020 06:59 19:40
Wednesday, 30th September 2020 07:25 19:03
  • Get the best available weekend rate at European hotels
  • Book direct with IHG at least 21 days in advance
  • Breakfast included when stayings Friday or Saturday night

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Discover more about Dublin

Where's hot in Ireland in September?

Below are average maximum temperatures at popular destinations in Ireland in September. Select a destination to see more weather parameters.

More destinations & map >>

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.