Weather in Galway in September
September in Galway is mild enough that walking is the default. This is a city-break month more than a sea-holiday month.
In Ireland, this is how Galway actually wears September, not how a country centroid would. Compared with July and January, September sits in the middle of Galway's year.
- Average temp
- 14°C
11–18°C
- Rainfall
- 77 mm
Showers likely
- Sunshine
- 4 h
hours per day
- Wind
- 17 km/h
What to expect
Daytime
Mild afternoons in Galway are the prize in September. You can eat outside on the good days. You still want something for the breeze.
This is walking weather. Shade is useful, not essential the way it is in the hot months. A long outdoor day is a reasonable plan.
Rain
Mixed skies in Galway in September. Dry days and wet days share the month. Outdoor plans need a backup, not a cancellation policy.
Pack a shell you will actually carry. The monthly table is the place for totals. This is the feel: usable, interrupted.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
Rain jacket
A layer for cooler evenings
Where to stay in Galway
Dates are a starting point for September.
Travel guides for Galway
What to read before you book.
Average weather in Galway
TemperatureRainfall
Similar weather in September
Other destinations whose September averages sit close to this one.
Check another month
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FAQs about Galway
Climate averages for Galway, 1991–2020.
The best time to visit Galway is between May and October, the most comfortable stretch of the year on these averages.
July is the hottest month, with an average around 16°C.
December is the wettest month, with about 113 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
