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.
Temperatures
18° / 13°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
66
mm
Sun Hours
9.7
Hrs
