Galway weather in September
Galway in September averages 14°C (58°F), 77 mm of rain and 4 hours of sun a day.
Of the twelve months in Galway, September is the fourth warmest, the sixth driest and the sixth sunniest.
- Average temp
- 14°C (58°F)
11–18°C · 51–64°F
- Rainfall
- 77 mm
Showers likely
- Sunshine
- 4 h
hours per day
- Wind
- 17 km/h
What is Galway like in September?
Daytime
Days are cool.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Galway in September?
A light rain jacket
About 77 mm falls this month — showers rather than washouts.
A warm mid-layer
Nights drop to around 11°C (51°F).
September compared with August and October
September in Galway is 1.7°C cooler than August and 12 mm drier than it, which averages 16°C (61°F).
September in Galway is 3°C warmer than October and 24 mm drier than it, which averages 11°C (52°F).
Daylight in Galway in September
On 15 September the sun is up for 12 hours 40 minutes in Galway, rising about 07:10 and setting about 19:50 local time.
September ends 2 hours shorter than it begins, so the last week of the month is a different length of day from the first.
That is 4 hours 18 minutes short of June, the longest-lit month here.
Where to stay in Galway
Dates are a starting point for September.
Travel guides for Galway
What to read before you book.
Galway weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 6°C / 43°F | 100 mm |
| February | 6°C / 44°F | 87 mm |
| March | 8°C / 46°F | 76 mm |
| April | 10°C / 49°F | 63 mm |
| May | 12°C / 54°F | 63 mm |
| June | 15°C / 58°F | 72 mm |
| July | 16°C / 61°F | 76 mm |
| August | 16°C / 61°F | 89 mm |
| September | 14°C / 58°F | 77 mm |
| October | 11°C / 52°F | 101 mm |
| November | 8°C / 47°F | 104 mm |
| December | 7°C / 44°F | 113 mm |
Similar weather in September
Other destinations whose September averages sit close to this one.
Check another month
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FAQs about Galway in September
September climate averages for Galway, 1991–2020.
Galway averages 14°C (58°F) in September, ranging from about 11°C (51°F) at night to 18°C (64°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 77 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 14°C (58°F) against 11°C (52°F) in October — 3°C warmer.
September is 1.7°C cooler than August, and 12 mm drier.
Yes. September falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 4 hours of sun a day on the 1991–2020 average, so daylight is short on useful sun.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours 40 minutes of daylight in mid-September, against 16 hours 58 minutes in June and 7 hours 33 minutes in December.
On 15 September, sunrise is about 07:10 and sunset about 19:50 local time. Both shift across the month — the month ends 2 hours shorter than it starts.
