Click on a day for an hourly weather forecast
The temperatures in Killarney in October are quite cold with temperatures between 7°C and 13°C, warm clothes are a must.
You can expect rain for roughly half of the month of October in Killarney. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Killarney in October 2025.
If you’re planning to visit Killarney in the near future, we highly recommend that you review the 14 day weather forecast for Killarney before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 8° / 2° | 11 | 19 | 2 | 139 mm | Awful | Killarney in January |
| February | 8° / 2° | 11 | 16 | 2 | 121 mm | Awful | Killarney in February |
| March | 10° / 2° | 7 | 22 | 2 | 82 mm | Awful | Killarney in March |
| April | 12° / 4° | 6 | 24 | 0 | 76 mm | Ok | Killarney in April |
| May | 14° / 6° | 7 | 24 | 0 | 96 mm | Ok | Killarney in May |
| June | 17° / 8° | 6 | 24 | 0 | 84 mm | Good | Killarney in June |
| July | 18° / 10° | 7 | 24 | 0 | 91 mm | Ok | Killarney in July |
| August | 17° / 10° | 7 | 24 | 0 | 92 mm | Ok | Killarney in August |
| September | 16° / 8° | 6 | 24 | 0 | 87 mm | Good | Killarney in September |
| October | 13° / 7° | 9 | 22 | 0 | 106 mm | Bad | Killarney in October |
| November | 10° / 4° | 10 | 20 | 0 | 130 mm | Bad | Killarney in November |
| December | 8° / 3° | 11 | 19 | 1 | 149 mm | Bad | Killarney in December |