Click on a day for an hourly weather forecast
The temperatures in Eastbourne in September are quite cold with temperatures between 9°C and 17°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Eastbourne 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 Eastbourne in September 2025.
If you’re planning to visit Eastbourne in the near future, we highly recommend that you review the 14 day weather forecast for Eastbourne before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 1° | 6 | 20 | 5 | 56 mm | Awful | Eastbourne in January |
| February | 7° / 1° | 6 | 16 | 6 | 55 mm | Bad | Eastbourne in February |
| March | 9° / 2° | 5 | 23 | 3 | 43 mm | Bad | Eastbourne in March |
| April | 12° / 3° | 4 | 24 | 2 | 40 mm | Bad | Eastbourne in April |
| May | 14° / 6° | 5 | 25 | 0 | 60 mm | Good | Eastbourne in May |
| June | 17° / 8° | 5 | 25 | 0 | 71 mm | Good | Eastbourne in June |
| July | 19° / 11° | 5 | 26 | 0 | 77 mm | Good | Eastbourne in July |
| August | 19° / 11° | 5 | 26 | 0 | 77 mm | Good | Eastbourne in August |
| September | 17° / 9° | 3 | 27 | 0 | 49 mm | Good | Eastbourne in September |
| October | 13° / 7° | 6 | 25 | 0 | 66 mm | Ok | Eastbourne in October |
| November | 9° / 4° | 8 | 22 | 1 | 73 mm | Bad | Eastbourne in November |
| December | 6° / 2° | 7 | 21 | 3 | 58 mm | Awful | Eastbourne in December |