Click on a day for an hourly weather forecast
The temperatures in Merseyside in September are usually low and can range between 10°C and 18°C.
You can expect about 3 to 8 days of rain in Merseyside 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 Merseyside in September 2025.
If you’re planning to visit Merseyside in the near future, we highly recommend that you review the 14 day weather forecast for Merseyside before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 2° | 10 | 18 | 4 | 84 mm | Awful | Merseyside in January |
| February | 8° / 2° | 8 | 16 | 4 | 73 mm | Awful | Merseyside in February |
| March | 10° / 3° | 7 | 22 | 2 | 68 mm | Awful | Merseyside in March |
| April | 13° / 4° | 5 | 25 | 1 | 58 mm | Ok | Merseyside in April |
| May | 15° / 7° | 7 | 24 | 0 | 79 mm | Ok | Merseyside in May |
| June | 18° / 10° | 7 | 23 | 0 | 101 mm | Ok | Merseyside in June |
| July | 20° / 12° | 8 | 23 | 0 | 105 mm | Ok | Merseyside in July |
| August | 19° / 12° | 7 | 24 | 0 | 105 mm | Ok | Merseyside in August |
| September | 18° / 10° | 6 | 24 | 0 | 80 mm | Good | Merseyside in September |
| October | 14° / 8° | 6 | 25 | 0 | 90 mm | Good | Merseyside in October |
| November | 10° / 5° | 9 | 21 | 0 | 106 mm | Bad | Merseyside in November |
| December | 7° / 3° | 9 | 20 | 2 | 91 mm | Awful | Merseyside in December |