Cape May Weather: September
 |
Average Day Temperature: | 77.2°F |
|
Average Night Temperature: | 68.4°F |
|
Sea Water Temperature: | 75.6°F |
|
Number of Sunny Days: | 14 days |
| Sunshine Hours: | 11.8 - 13.0 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.1 in | |
| detailed information | ||
forecast
| Cape May |
Temperature
| Cape May |
Air Temperature in September, °F
The highest day temperature in September 2025 was 90°F. The lowest night temperature was 55°F. The average values for day and night temperatures during September were 78.9°F и 67.8°F respectivly.
Cape May Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Cape May was 74.7°F. The maximum and minimum values were 73.0°F and 76.8°F respectively.
Most of the days in September are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Cape May is 1.1 in.
The average wind speed in September is 9.6 mph. It makes September one of the most windless months of the year for Cape May.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Cape May in September is 7.7 hours.
Cape May on the Weather Map
| Chicago |  |
-2 |
| Hawaii | |
+78 |
| Honolulu | |
+78 |
| Houston | |
+44 |
| Las Vegas |  |
+40 |
| Los Angeles | |
+52 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach |  |
+80 |
| New York | |
+20 |
| San Diego | |
+54 |
| San Francisco | |
+46 |
| Sarasota | |
+62 |
| Tampa | |
+62 |
| Washington | |
+28 |
| 0600 |  |
26°F | SW 8 mph |
| 0900 | |
26°F | S 7 mph |
| 1200 | |
28°F | SW 8 mph |
| 1500 | |
34°F | SW 6 mph |
| 1800 | |
34°F | SW 8 mph |
| 2100 | |
32°F | S 8 mph |
| 0000 | |
34°F | S 9 mph |
| 0300 | |
34°F | S 9 mph |