Climate
Weather in Ireland in September
Weather in Ireland, September
In September, Ireland sees average highs of 17.1°C (63°F) and lows of 11.6°C (53°F), with around 107 mm of rain.
Ireland — September
Ireland → September
- Daytime high
- 17.1°C (63°F)
- Overnight low
- 11.6°C (53°F)
- Rainfall
- 107 mm
- Best-time rank
- Off-peak
How September compares
| This month | 17.1°C (63°F) / 11.6°C (53°F) · 107 mm |
|---|---|
| Yearly average | 13.8°C (57°F) / 8.4°C (47°F) · 83 mm |
September in Ireland runs 3.3°C (5.9°F) warmer than the yearly average, and is wetter than the yearly average. Pack a warm jacket for cooler conditions, and something waterproof — this is a wetter month.
Common questions
What is the weather like in Ireland in September?
Average highs of 17.1°C (63°F) and lows of 11.6°C (53°F), with around 107 mm of rain.
Is September a good time to visit Ireland?
It is an off-peak month for comfort in Ireland; June, July, August tend to be more pleasant.
Updated climate normals, 2025