Click on a day for an hourly weather forecast
The temperatures in Southport in September are usually low and can range between 12°C and 17°C.
You can expect about 3 to 8 days of rain in Southport 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 Southport in September 2025.
If you’re planning to visit Southport in the near future, we highly recommend that you review the 14 day weather forecast for Southport before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 4° | 9 | 18 | 3 | 85 mm | Awful | Southport in January |
| February | 7° / 4° | 8 | 17 | 3 | 70 mm | Awful | Southport in February |
| March | 10° / 5° | 6 | 24 | 2 | 59 mm | Bad | Southport in March |
| April | 12° / 6° | 4 | 26 | 1 | 46 mm | Ok | Southport in April |
| May | 14° / 9° | 6 | 25 | 0 | 65 mm | Good | Southport in May |
| June | 17° / 11° | 6 | 24 | 0 | 81 mm | Good | Southport in June |
| July | 19° / 13° | 6 | 25 | 0 | 93 mm | Good | Southport in July |
| August | 19° / 14° | 6 | 25 | 0 | 97 mm | Good | Southport in August |
| September | 17° / 12° | 5 | 25 | 0 | 77 mm | Good | Southport in September |
| October | 14° / 10° | 7 | 24 | 0 | 89 mm | Ok | Southport in October |
| November | 10° / 7° | 8 | 21 | 0 | 103 mm | Bad | Southport in November |
| December | 8° / 5° | 8 | 21 | 2 | 93 mm | Awful | Southport in December |