Galway vs Dublin

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Dublin edges ahead as the better destination in September. Dublin offers 8 hours of daily sunshine with only 12 rain days, while Galway sees 7 sunshine hours and 13 rain days.

Galway sits in the comfortable travel range at 16°C. Dublin is also comfortable at 17°C.

For travelers who prioritize dry weather, Dublin is the stronger choice in September. Dublin receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Galway reaches an average high of 16°C (61°F) and drops to 11°C (52°F) at night during September. The daily temperature range is 5°C, meaning relatively stable temperatures from day to night.

Dublin averages 17°C (63°F) for the high and 11°C (52°F) for the low, with a daily range of 6°C. The two cities feel quite similar in terms of temperature.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.

Galway receives approximately 80 mm of rainfall across 13 rain days during September. You can expect rain roughly every other day.

Dublin sees 70 mm over 12 rain days. That makes Dublin the drier option by 1 rain day and 10 mm of total precipitation.

Both cities share similar humidity levels at 65%.