September · typical climate, not a forecast
Galway in September
Ireland
Workable
17°C day · 12°C night · 49% rain · 12h daylight · moderate crowds · €1,175 estimated
Live · Galway
–°C
Reading…
Live · Tallinn (you)
–°C
Reading…
Cool Score breakdown
Scored for 5 nights from Tallinn in September.
- Temperature fit99
16.5°C typical high vs your 12–20°C window
w 26 - Heat escape0
0.2°C warmer than Tallinn
w 14 - Rain probability50
49% chance of rain on an average day
w 11 - Daylight hours60
12.4h of daylight mid-month
w 8 - Outdoor conditions78
Comfortable for a full day outside at 16.5°C
w 10 - Crowding59
Moderate crowds for this month
w 8 - Flight + stay cost67
≈€1175 estimated for 5 nights vs €1000 budget
w 12 - Nature access80
8/10 — wild ground within reach
w 6 - City atmosphere74
7/10 urban texture · 8/10 food scene
w 4
Why Galway in September
Peak Irish summer tops out where a Mediterranean spring starts.
- Connemara day trips
- Trad music sessions
- Atlantic cliff drives
What September in Galway is actually like
In September, Galway sits around 17°C by day and drops to about 12°C after dark, so a light layer earns its place in the bag even in high summer. That is roughly 0°C warmer than Tallinn at the same time of year — the difference between planning your day around the shade and simply walking out of the door.
Expect rain on roughly 49% of days, usually passing rather than persistent, and about 12 hours of daylight to spend outside. Crowds are moderate crowds this month, and a 5-night trip from Tallinn works out at around €1,175 including flights, a mid-range stay and everyday spending.
Peak Irish summer tops out where a Mediterranean spring starts. Days here tend to fill up with connemara day trips, trad music sessions, atlantic cliff drives — which is why Galway scores 65 out of 100 for september: workable.
Other months
Compare the typical climate month by month.