Click on a day for an hourly weather forecast
The temperatures in Ireland in September are usually low and can range between 11°C and 16°C.
You can expect about 3 to 8 days of rain in Ireland during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Ireland in September 2024.
If you’re planning to visit Ireland in the near future, we highly recommend that you review the 14 day weather forecast for Ireland before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 8° / 4° | 10 | 18 | 2 | 103 mm | Awful | Ireland in January |
| February | 8° / 4° | 8 | 18 | 2 | 92 mm | Awful | Ireland in February |
| March | 9° / 5° | 7 | 23 | 1 | 78 mm | Bad | Ireland in March |
| April | 10° / 6° | 7 | 22 | 1 | 72 mm | Bad | Ireland in April |
| May | 13° / 8° | 6 | 25 | 0 | 74 mm | Ok | Ireland in May |
| June | 15° / 11° | 6 | 24 | 0 | 98 mm | Good | Ireland in June |
| July | 17° / 12° | 7 | 24 | 0 | 97 mm | Ok | Ireland in July |
| August | 17° / 12° | 7 | 24 | 0 | 106 mm | Ok | Ireland in August |
| September | 16° / 11° | 7 | 23 | 0 | 89 mm | Ok | Ireland in September |
| October | 13° / 10° | 8 | 23 | 0 | 123 mm | Bad | Ireland in October |
| November | 10° / 7° | 9 | 21 | 0 | 124 mm | Bad | Ireland in November |
| December | 8° / 5° | 9 | 20 | 2 | 114 mm | Awful | Ireland in December |