Early autumn · Weather & things to do
Galway in September
Galway edges cooler than August, with highs of 63°F (17°C), lows of 50°F (10°C) and about 3.4 in (86 mm) of rain.
At 77/100 for comfort (2nd of 12), it's one of the best months to visit.
- Avg high
- 63°F (17°C)
- Avg low
- 50°F (10°C)
- Rain
- 3.4 in (86 mm)
- Humidity
- 86%
- Cloud cover
- 74%
- Daylight
- ~12 h 24 min
- Comfort score
- 77/100 · Great
What September feels like
Highs near 63°F (17°C) make for comfortable sightseeing weather.
Lows average 50°F (10°C).
Showers are part of the month, adding up to about 3.4 in (86 mm).
Plan around September
September is one of Galway's best months on the climate data.
- Last of the best-scoring months: by October, the score drops to 65/100.
- Comfort holds steady from August (76 → 77/100).
- September sits inside the May – Sep window our Dublin to the Wild Atlantic Way route recommends.
What to pack for September
- A warm layer for eveningsnights drop to 50°F
- Packable rain jacket or umbrellaabout 3.4 in of rain
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Galway in September
September is good outdoor weather here, so these picks lean toward the open air.
Latin Quarter and Quay Street
Pedestrian streets of buskers, pubs and shops running down to the river.
Why now September scores 77/100 for comfort, good conditions for being outside.
Salthill Promenade
Two-mile seafront walk over Galway Bay; locals kick the wall at the end.
Why now Highs near 63°F and 3.4 in of monthly rain make this an easy outdoor pick.
The Crane Bar
West End pub with trad sessions in the upstairs room.
Galway Cathedral
Stone cathedral finished in 1965, with mosaics and a large copper dome.
Inis Mór
Largest Aran Island; cycle to the cliff-edge fort of Dún Aonghasa.
Why now One to do outside while the weather is on your side.
Nearby in September
- Doolin & the Cliffs of Moher in September~22 mi · highs 61°F, 4.1 in rain · 1°C (2°F) cooler by day, wetter
- Connemara in September~42 mi · highs 60°F, 4.4 in rain · 2°C (3°F) cooler by day, wetter
- Dublin in September~116 mi · highs 61°F, 3.0 in rain · similar daytime temperatures, about as wet
- Fort William in September~291 mi · highs 59°F, 6.0 in rain · 2°C (4°F) cooler by day, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Galway in September: quick answers
Is September a good time to visit Galway?
Yes. On the climate data it's one of the best months, scoring 77/100. Expect highs of 63°F (17°C) and 3.4 in (86 mm) of rain. September is inside the May – Sep window our Dublin to the Wild Atlantic Way route recommends.
How cold is Galway in September?
Average highs are 63°F (17°C) and average lows 50°F (10°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Galway in September?
Some: about 3.4 in (86 mm) of rain falls across September on average, the 5th-driest month of the year. The annual total is about 44.6 in (1134 mm).
What should I pack for Galway in September?
Bring a warm layer for evenings (nights drop to 50°F), packable rain jacket or umbrella (about 3.4 in of rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Routes in season in September
- Dublin to the Wild Atlantic Way May – Sep
Planning Galway in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.