Dennis Port Weather: September
 |
Average Day Temperature: | 71.3°F |
|
Average Night Temperature: | 65.2°F |
|
Sea Water Temperature: | 70.9°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 11.8 - 13.1 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.4 in | |
| detailed information | ||
forecast
| Dennis Port |
Temperature
| Dennis Port |
Air Temperature in September, °F
The highest day temperature in September 2026 was 85°F. The lowest night temperature was 56°F. The average values for day and night temperatures during September were 70.0°F и 63.4°F respectivly.
Dennis Port Water Sea Temperature in September, °F
The average sea surface temperature in September 2026 for Dennis Port was 70.1°F. The maximum and minimum values were 61.6°F and 76.0°F respectively.
You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Dennis Port is 1.4 in. It makes september one of the most rainy months of the year.
The average wind speed in September is 11.0 mph. It makes September one of the most windless months of the year for Dennis Port.
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 Dennis Port in September is 6.9 hours.
Dennis Port on the Weather Map
| Boston |  |
+52 |
| Chicago | |
+58 |
| Hawaii | |
+80 |
| Houston |  |
+80 |
| Las Vegas | |
+82 |
| Los Angeles | |
+96 |
| Maui | |
+72 |
| Miami |  |
+86 |
| Myrtle Beach | |
+68 |
| New York | |
+56 |
| San Diego | |
+86 |
| San Francisco | |
+66 |
| Santa Monica | |
+88 |
| Sarasota | |
+82 |
| Washington | |
+58 |
| 0300 |  |
52°F | SE 17 mph |
| 0600 | |
48°F | SE 17 mph |
| 0900 |  |
48°F | SE 16 mph |
| 1200 | |
54°F | SE 13 mph |
| 1500 | |
60°F | SE 12 mph |
| 1800 | |
58°F | SE 11 mph |
| 2100 | |
54°F | SE 9 mph |
| 0000 | |
52°F | SE 8 mph |