- Explore the latest offers on IHG hotels in Ireland
- Book direcly with IHG online & get the lowest rate
- Join the IHG Rewards Club for discounts, benefits & more
Galway weather in September 2020
- 1717°C max day temperature
- 2020 days with some rainfall
- 99°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 104104 mm of monthly rainfall
- 44 (Moderate) UV index
- 1515°C sea temperature
The September weather guide for Galway, 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.
How warm is it in Galway in September?
Daytime temperatures usually reach 17°C in Galway in September, falling to 9°C at night.
How sunny is it in Galway in September?
There are normally 3 hours of bright sunshine each day in Galway in September - that's 26% of daylight hours.
How warm is the sea around Galway in September?
The average sea temperature around Galway in September is 15°C.
Does it rain in Galway in September?
There are usually 20 days with some rain in Galway in September and the average monthly rainfall is 104mm.
Galway sunrise & sunset times for September 2020
Browse the sunrise & sunset times for Galway in September 2020. Select a month to view Galway sunrise & sunset times for the next twelve months.
|Date||Sunrise times||Sunset times|
|Tuesday, 1st September 2020||06:46||20:25|
|Tuesday, 15th September 2020||07:11||19:51|
|Wednesday, 30th September 2020||07:37||19:14|
- Browse flights to Dublin, Cork, Shannon, Knock & Belfast
- Fly from the UK from £29 one-way including taxes & fees
- No Aer Lingus promo code required
Metric (°C / mm) | Imperial (°F / inches)
Discover more about Ireland
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.
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Popular travel offers
*affiliate links: find out how we are funded and why this helps us remain free to use.