Dauphin Island
Alabama, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Dauphin Island, AL

The aerial view of the scenic Dauphin Island in Alabama
The aerial view of the scenic Dauphin Island in Alabama
The first month of the autumn, September, is still a warm month in Dauphin Island, Alabama, with average temperature fluctuating between 85.8°F (29.9°C) and 75°F (23.9°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a warm 85.8°F (29.9°C). In September, the average low-temperature is 75°F (23.9°C).

Rainfall

In Dauphin Island, in September, it is raining for 9 days, with typically 5.4" (136.7mm) of accumulated precipitation. Throughout the year, in Dauphin Island, there are 115 rainfall days, and 61.4" (1559.2mm) of precipitation is accumulated.

Ocean temperature

In Dauphin Island, in September, the average water temperature is 83.1°F (28.4°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In September, the average length of the day in Dauphin Island, Alabama, is 12.3h.

What is the temperature in September in Dauphin Island?

In September, in Dauphin Island, Alabama, the average high-temperature is 85.8°F (29.9°C), and the average low-temperature is 75°F (23.9°C).

How many days does it rain in September in Dauphin Island?

In Dauphin Island, Alabama, in September, during 9 rainfall days, 5.4" (136.7mm) of precipitation is typically accumulated.

What is the water temperature in September in Dauphin Island?

In September, the average ocean temperature in Dauphin Island, Alabama, is 83.1°F (28.4°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in September in Dauphin Island?

In Dauphin Island, the average length of the day in September is 12.3h.
Average temperature in September - Dauphin Island, AL
  • Average high temperature in September: 85.8°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in September: 75°F

The month with the highest average low temperature is August (78°F).
The coldest month (with the lowest average low temperature) is January (45.5°F).

Average rainfall in September - Dauphin Island, AL
  • Average rainfall in September: 5.4"

The wettest month (with the highest rainfall) is August (7.2").
The driest month (with the lowest rainfall) is October (3.9").

Average rainfall days in September - Dauphin Island, AL
  • Average rainfall days in September: 9 days

Months with the highest number of rainy days are January, August and December (12 days).
Months with the lowest number of rainy days are April, May and October (7 days).

Average sea temperature in September - Dauphin Island, AL
  • Average sea temperature in September: 83.1°F

The best month for swimming (with the highest average sea temperature) is August (86.6°F).
The coldest month (with the lowest average sea temperature) is January (58.7°F).

Average daylight in September - Dauphin Island, AL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.1h).
The month with shortest days is December (Average daylight: 10.2h).