Click on a day for an hourly weather forecast
The temperatures in Wicklow 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 Wicklow 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 Wicklow in September 2025.
If you’re planning to visit Wicklow in the near future, we highly recommend that you review the 14 day weather forecast for Wicklow before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 8° / 5° | 7 | 22 | 2 | 65 mm | Awful | Wicklow in January |
| February | 8° / 5° | 6 | 20 | 3 | 62 mm | Bad | Wicklow in February |
| March | 9° / 5° | 5 | 25 | 1 | 50 mm | Ok | Wicklow in March |
| April | 10° / 6° | 6 | 24 | 0 | 49 mm | Ok | Wicklow in April |
| May | 12° / 8° | 5 | 26 | 0 | 56 mm | Ok | Wicklow in May |
| June | 15° / 11° | 5 | 25 | 0 | 69 mm | Good | Wicklow in June |
| July | 17° / 13° | 5 | 26 | 0 | 67 mm | Good | Wicklow in July |
| August | 17° / 13° | 5 | 26 | 0 | 69 mm | Good | Wicklow in August |
| September | 16° / 11° | 5 | 25 | 0 | 57 mm | Good | Wicklow in September |
| October | 13° / 10° | 6 | 25 | 0 | 80 mm | Ok | Wicklow in October |
| November | 10° / 7° | 7 | 23 | 0 | 78 mm | Bad | Wicklow in November |
| December | 9° / 6° | 7 | 23 | 1 | 72 mm | Bad | Wicklow in December |