Click on a day for an hourly weather forecast
The temperatures in Littlehampton in September are usually low and can range between 13°C and 18°C.
You can expect about 3 to 8 days of rain in Littlehampton 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 Littlehampton in September 2025.
If you’re planning to visit Littlehampton in the near future, we highly recommend that you review the 14 day weather forecast for Littlehampton before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 8° / 4° | 9 | 20 | 3 | 107 mm | Awful | Littlehampton in January |
| February | 8° / 4° | 9 | 16 | 4 | 88 mm | Awful | Littlehampton in February |
| March | 10° / 5° | 6 | 25 | 1 | 67 mm | Ok | Littlehampton in March |
| April | 12° / 6° | 4 | 26 | 0 | 50 mm | Ok | Littlehampton in April |
| May | 15° / 9° | 5 | 26 | 0 | 67 mm | Good | Littlehampton in May |
| June | 18° / 12° | 4 | 26 | 0 | 88 mm | Good | Littlehampton in June |
| July | 20° / 14° | 5 | 26 | 0 | 75 mm | Good | Littlehampton in July |
| August | 20° / 14° | 4 | 27 | 0 | 77 mm | Good | Littlehampton in August |
| September | 18° / 13° | 4 | 26 | 0 | 66 mm | Good | Littlehampton in September |
| October | 15° / 11° | 7 | 24 | 0 | 119 mm | Ok | Littlehampton in October |
| November | 11° / 8° | 9 | 21 | 0 | 123 mm | Bad | Littlehampton in November |
| December | 9° / 6° | 9 | 20 | 2 | 125 mm | Awful | Littlehampton in December |