September weather forecastVirginia Beach, VA
September
Weather in September
September in Virginia Beach, Virginia heralds the onset of fall with a discernible change in the air. Mellowing from the summer peak, temperatures commence a downward trend, although the days remain pleasantly warm. The shift from summer's scorching heat to fall's comfortable weather is best experienced at the beach, with the sea surface temperature averaging a comfortable 74.8°F (23.8°C). The changing colors and the gentle whispers of the falling leaves create a picturesque backdrop. Clearly, September is a month of transition as it blends the remnants of summer with the dawn of a cooler season.Temperature
Virginia Beach marks the onset of September with an average high-temperature of a still moderately hot 77.9°F (25.5°C), a subtle shift from August's 82.9°F (28.3°C). Night temperatures in September exhibit a subtle decrease, settling at an average of 70.3°F (21.3°C).Humidity
The average relative humidity in September is 76%.Rainfall
In Virginia Beach, in September, it is raining for 11.5 days, with typically 1.54" (39mm) of accumulated precipitation. In Virginia Beach, during the entire year, the rain falls for 134.5 days and collects up to 14.21" (361mm) of precipitation.Snowfall
April through November are months without snowfall.Ocean temperature
In Virginia Beach, in September, the average water temperature is 74.8°F (23.8°C).Note: A swim in 74.8°F (23.8°C) waters can be refreshing, especially when factoring in a person's cold tolerance, sunshine, wind, and the overall temperature. As a point of reference, Olympic swimming events are held in 77°F (25°C) to 82.4°F (28°C) waters.
Daylight
The average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 6:35 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:48 pm EDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 5 in September translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Virginia Beach, VA
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (46°F).
- Average low temperature in September: 70.3°F
The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (36.7°F).
Average pressure in September
Virginia Beach, 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).
Average wind speed in September
Virginia Beach, VA
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is March (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Virginia Beach, VA
- Average humidity in September: 76%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are October and November (74%).
Average rainfall in September
Virginia Beach, VA
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is August (1.73").
The driest month (with the least rainfall) is November (0.75").
Average rainfall days in September
Virginia Beach, VA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is August (15.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Virginia Beach, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Virginia Beach, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Virginia Beach, VA
- Average sea temperature in September: 74.8°F
The best month for swimming (with the highest average sea temperature) is August (80°F).
The coldest month (with the lowest average sea temperature) is February (41.8°F).
Average daylight in September /
Average sunshine in September
Virginia Beach, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in September
Virginia Beach, VA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (20.6 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in September
Virginia Beach, VA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Virginia Beach, VA
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in September
Virginia Beach, 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).
