Click on a day for an hourly weather forecast
The temperatures in Newry in September are usually low and can range between 10°C and 14°C.
You can expect about 3 to 8 days of rain in Newry 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 Newry in September 2025.
If you’re planning to visit Newry in the near future, we highly recommend that you review the 14 day weather forecast for Newry before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 2° | 10 | 15 | 6 | 90 mm | Awful | Newry in January |
| February | 6° / 2° | 9 | 11 | 7 | 97 mm | Awful | Newry in February |
| March | 7° / 3° | 9 | 17 | 5 | 81 mm | Awful | Newry in March |
| April | 9° / 5° | 8 | 20 | 2 | 74 mm | Awful | Newry in April |
| May | 12° / 7° | 8 | 23 | 0 | 94 mm | Bad | Newry in May |
| June | 14° / 9° | 8 | 23 | 0 | 112 mm | Ok | Newry in June |
| July | 16° / 11° | 8 | 23 | 0 | 117 mm | Ok | Newry in July |
| August | 16° / 11° | 8 | 23 | 0 | 127 mm | Ok | Newry in August |
| September | 14° / 10° | 7 | 23 | 0 | 100 mm | Ok | Newry in September |
| October | 12° / 8° | 9 | 22 | 0 | 132 mm | Bad | Newry in October |
| November | 8° / 5° | 10 | 19 | 2 | 113 mm | Awful | Newry in November |
| December | 6° / 3° | 10 | 16 | 5 | 94 mm | Awful | Newry in December |