Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The arrival of May brings a change in Dewey Beach's weather, with average high-temperatures moving from April's refreshing 56.5°F (13.6°C) to a comfortable 65.5°F (18.6°C). The nighttime temperature in Dewey Beach in May experiences a minor dip, averaging a still refreshing 58.5°F (14.7°C).Humidity
With an average relative humidity of 82%, May is the most humid month.Rainfall
In Dewey Beach, Delaware, in May, it is raining for 9 days, with typically 0.55" (14mm) of accumulated precipitation. In Dewey Beach, during the entire year, the rain falls for 89.4 days and collects up to 6.18" (157mm) of precipitation.Snowfall
April through October are months without snowfall in Dewey Beach.Daylight
The average length of the day in May is 14h and 18min.On the first day of May, sunrise is at 6:01 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:18 pm EDT.
Sunshine
The average sunshine in May is 9.4h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Dewey Beach, Delaware. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In May, a regular UV index of 6 translates into these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What are the temperatures in Dewey Beach in May?
What is the most humid month in Dewey Beach?
What is the average humidity in May in Dewey Beach?
How much does it rain in Dewey Beach in May?
When it does not snow in Dewey Beach?
How many hours of daylight does Dewey Beach have in May?
What time are sunrise and sunset in May in Dewey Beach?
How long on average sun shines in May in Dewey Beach?
What are the months with the highest UV index in Dewey Beach?
How high is the UV index in May in Dewey Beach?
Average temperature in May
Dewey Beach, DE
- Average high temperature in May: 65.5°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (41.4°F).
- Average low temperature in May: 58.5°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).
Average pressure in May
Dewey Beach, DE
- Average pressure in May: 30.02"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 May
Dewey Beach, DE
- Average wind speed in May: 10.7mph
The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).
Average humidity in May
Dewey Beach, DE
- Average humidity in May: 82%
The month with the highest relative humidity is May (82%).
The month with the lowest relative humidity is November (73%).
Average rainfall in May
Dewey Beach, DE
- Average rainfall in May: 0.55"
The wettest month (with the highest rainfall) is October (0.71").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in May
Dewey Beach, DE
- Average rainfall days in May: 9 days
The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is November (4.9 days).
Average snowfall in May
Dewey Beach, DE
- Average snowfall in May: 0"
The months with the highest snowfall are January and December (0.12").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Dewey Beach, DE
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Dewey Beach, DE
- Average daylight in May: 14h and 2min
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 May: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in May
Dewey Beach, DE
- Average sunshine days in May: 19.5 days
The month with the most sunshine days is January (23.5 days).
The months with the least sunshine days are June and July (18.2 days).
Average UV index in May
Dewey Beach, DE
- Average UV index in May: 6
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 May
Dewey Beach, DE
- Average cloud cover in May: 38
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in May
Dewey Beach, DE
- Average visibility in May: 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).
Dewey Beach, Delaware, USA
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