September weather forecastOcean View, DE
September
Weather in September
September in Ocean View, Delaware signals the onset of fall with the average high temperature dropping to a comfortable 73.9°F (23.3°C). Despite this, many consider September to be an extension of summer, with plenty of sunshine and lingering warm temperatures. As the transition month between summer and fall, September comprises varying weather conditions, including decreases in daylight hours. The decline in wind speeds and the lessening humidity provide a gentle introduction to the cooler autumn months ahead.Temperature
Ocean View experiences an average high-temperature of a still moderately hot 73.9°F (23.3°C) in September, subtly different from August's 79.2°F (26.2°C). Ocean View maintains an average of approximately a pleasant 68.9°F (20.5°C) during September nights, with only a minimal decrease from the daytime temperature.Humidity
The average relative humidity in September is 77%.Rainfall
In Ocean View, during September, the rain falls for 13.3 days and regularly aggregates up to 2.09" (53mm) of precipitation. Throughout the year, there are 147.9 rainfall days, and 23.58" (599mm) of precipitation is accumulated.Snowfall
In Ocean View, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:30 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:44 pm EDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In Ocean View, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Put precautions into practice - Guidance to elude sunburn is provided. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ocean View, DE
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in September: 68.9°F
The month with the highest average low temperature is July (74.1°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in September
Ocean View, DE
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Ocean View, DE
- Average wind speed in September: 11.3mph
The windiest months (with the highest average wind speed) are January and November (13.5mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).
Average humidity in September
Ocean View, DE
- Average humidity in September: 77%
The month with the highest relative humidity is May (82%).
The month with the lowest relative humidity is November (73%).
Average rainfall in September
Ocean View, DE
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is November (1.14").
Average rainfall days in September
Ocean View, DE
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in September
Ocean View, DE
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Ocean View, DE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Ocean View, DE
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 12min
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 0min).
Average sunshine days in September
Ocean View, DE
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is August (13.1 days).
Average UV index in September
Ocean View, DE
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Ocean View, DE
- Average cloud cover in September: 33
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Ocean View, DE
- 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).
