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The weather in Cape May in September is hot. The average temperatures are between 20°C and 24°C.
You can expect about 3 to 8 days of rain in Cape May 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 Cape May in September 2025.
If you’re planning to visit Cape May in the near future, we highly recommend that you review the 14 day weather forecast for Cape May before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 0° | 4 | 23 | 4 | 44 mm | Awful | Cape May in January |
| February | 6° / 1° | 4 | 20 | 4 | 52 mm | Awful | Cape May in February |
| March | 9° / 4° | 6 | 23 | 2 | 54 mm | Bad | Cape May in March |
| April | 14° / 9° | 3 | 26 | 0 | 46 mm | Good | Cape May in April |
| May | 19° / 15° | 4 | 27 | 0 | 67 mm | Good | Cape May in May |
| June | 24° / 20° | 4 | 26 | 0 | 74 mm | Perfect | Cape May in June |
| July | 27° / 23° | 5 | 26 | 0 | 85 mm | Perfect | Cape May in July |
| August | 26° / 23° | 5 | 26 | 0 | 90 mm | Perfect | Cape May in August |
| September | 24° / 20° | 4 | 26 | 0 | 62 mm | Perfect | Cape May in September |
| October | 19° / 15° | 4 | 27 | 0 | 71 mm | Good | Cape May in October |
| November | 12° / 9° | 4 | 26 | 0 | 42 mm | Ok | Cape May in November |
| December | 8° / 5° | 5 | 24 | 2 | 59 mm | Bad | Cape May in December |