Usually the weather in Killarney during the duration of September is 12. Highs are around 17 with low daily temperautes being 11.
| Month | Degrees Celsius |
|---|---|
| Temperature | 12 |
| High Temperature | 17 |
| Low Temperature | 11 |
| Sunshine Per Day | 5 |
Useful Links: Killarney Weather: Average Weather & Yearly Climate