September weather forecast
Cape Charles, VA

Weather in September

September, the first month of the autumn in Cape Charles, is also a moderately hot month, with an average temperature varying between 70.9°F (21.6°C) and 76.8°F (24.9°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still moderately hot 76.8°F (24.9°C). The average low-temperature, in Cape Charles, is 70.9°F (21.6°C).

Humidity

The average relative humidity in September in Cape Charles is 75%.

Rainfall

In September, the rain falls for 11.6 days. Throughout September, 1.34" (34mm) of precipitation is accumulated. Throughout the year, in Cape Charles, there are 131.1 rainfall days, and 13.54" (344mm) of precipitation is accumulated.

Snowfall

In Cape Charles, snow does not fall in April through December.

Ocean temperature

In September, the average ocean temperature is 75°F (23.9°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 75°F (23.9°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In Cape Charles, the average length of the day in September is 12h and 25min.
On the first day of September in Cape Charles, sunrise is at 6:34 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:49 pm EDT.

Sunshine

In Cape Charles, the average sunshine in September is 9.5h.

UV index

In Cape Charles, Virginia, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in September in Cape Charles?

The average high-temperature, in September, in Cape Charles, is 76.8°F (24.9°C), while the average low-temperature is 70.9°F (21.6°C). in August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 86°F (30°C).

What is the average humidity in September in Cape Charles?

In Cape Charles, the average relative humidity in September is 75%.

How much does it rain in Cape Charles in September?

In Cape Charles, Virginia, during September, the rain falls for 11.6 days and regularly aggregates up to 1.34" (34mm) of precipitation.

When it does not snow in Cape Charles?

April through December are months without snowfall in Cape Charles, Virginia.

How warm is the water in September in Cape Charles?

In Cape Charles, in September, the average water temperature is 75°F (23.9°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 75°F (23.9°C) water may be enjoyable.

What is the average length of the day in September in Cape Charles?

In Cape Charles, Virginia, the average day length in September is 12h and 25min.

What time are sunrise and sunset in September in Cape Charles?

In September, on the first day of the month, sunrise is at 6:34 am and sunset at 7:33 pm. On the last day of the month, in Cape Charles, Virginia, sunrise is at 6:58 am and sunset at 6:49 pm EDT.

How long on average sun shines in September in Cape Charles?

The average sunshine duration in September is 9.5h.

What is the UV index intensity in September in Cape Charles?

The average daily maximum UV index in September in Cape Charles is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Cape Charles, VA

Average temperature in September - Cape Charles, VA
  • Average high temperature in September: 76.8°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (44.2°F).

  • Average low temperature in September: 70.9°F

The month with the highest average low temperature is July (75.9°F).
The coldest month (with the lowest average low temperature) is January (36.5°F).

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Average pressure in September
Cape Charles, VA

Average pressure in September - Cape Charles, VA
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in September
Cape Charles, VA

Average wind speed in September - Cape Charles, VA
  • Average wind speed in September: 11.5mph

The windiest months (with the highest average wind speed) are January and March (13.4mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).

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Average humidity in September
Cape Charles, VA

Average humidity in September - Cape Charles, VA
  • Average humidity in September: 75%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, October and November (74%).

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Average rainfall in September
Cape Charles, VA

Average rainfall in September - Cape Charles, VA
  • Average rainfall in September: 1.34"

The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is November (0.71").

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Average rainfall days in September
Cape Charles, VA

Average rainfall days in September - Cape Charles, VA
  • Average rainfall days in September: 11.6 days

The month with the highest number of rainy days is August (15.1 days).
The months with the least rainy days are January and October (7.5 days).

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Average snowfall in September
Cape Charles, VA

Average snowfall in September - Cape Charles, VA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.24").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Cape Charles, VA

Average snowfall days in September - Cape Charles, VA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in September
Cape Charles, VA

Average sea temperature in September - Cape Charles, VA
  • Average sea temperature in September: 75.1°F

The best month for swimming (with the highest average sea temperature) is August (79.4°F).
The coldest month (with the lowest average sea temperature) is February (43.1°F).

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Average daylight in September /
Average sunshine in September
Cape Charles, VA

Average daylight in September / Average sunshine in September - Cape Charles, VA
  • Average daylight in September: 12h and 25min

The month with the longest days is June (Average daylight: 14h and 41min).
The month with the shortest days is December (Average daylight: 9h and 39min).

  • Average sunshine in September: 9h and 30min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

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Average sunshine days in September
Cape Charles, VA

Average sunshine days in September - Cape Charles, VA
  • Average sunshine days in September: 16.4 days

The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is August (12.7 days).

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Average UV index in September
Cape Charles, VA

Average UV index in September - Cape Charles, VA
  • Average UV index in September: 5

The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in September
Cape Charles, VA

Average cloud cover in September - Cape Charles, VA
  • Average cloud cover in September: 31

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in September
Cape Charles, VA

Average visibility in September - Cape Charles, VA
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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