Dublin Weather in September
Ireland · 30-year monthly averages
👍 Good time to visit
September in Dublin is mild, with average daytime highs around 17°C (62°F) and nighttime lows near 10°C (49°F). Expect roughly 63mm of precipitation spread over about 11 rainy days, with a moderate amount of rain.
Avg high
17°C
62°F
Avg low
10°C
49°F
Rainfall
63mm
moderate
Rainy days
11
days with ≥1mm
☀️ About 131 hours of sunshine over the month (~4h/day).
🎒 What to pack
- light jacket
- layers for cool evenings
September vs the rest of the year
FAQ
- How hot is Dublin in September?
- September in Dublin is mild, with average daytime highs around 17°C (62°F) and nighttime lows near 10°C (49°F). Expect roughly 63mm of precipitation spread over about 11 rainy days, with a moderate amount of rain.
- Does it rain a lot in Dublin in September?
- Dublin sees around 63mm of precipitation in September on average — moderate by global standards.
- Is September a good time to visit Dublin?
- September is a good month to visit Dublin, with generally agreeable conditions.