May weather forecastNassau, DE
May
Weather in May
May, the last month of the spring in Nassau, is a refreshing month, with an average temperature fluctuating between 66.4°F (19.1°C) and 58.1°F (14.5°C).Temperature
May brings a slight elevation in the average high-temperature, transitioning from April's mild 57.6°F (14.2°C) to an enjoyable 66.4°F (19.1°C). Nassau's nocturnal average in May closely mirrors its daytime temperatures, settling at a mild 58.1°F (14.5°C).Humidity
With an average relative humidity of 81%, May is the most humid month.Rainfall
In Nassau, Delaware, in May, during 18.2 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. In Nassau, during the entire year, the rain falls for 173.6 days and collects up to 36.97" (939mm) of precipitation.Snowfall
In Nassau, snow does not fall in April through October.Daylight
In Nassau, the average length of the day in May is 14h and 18min.On the first day of May in Nassau, sunrise is at 6:02 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:19 pm EDT.
Sunshine
The average sunshine in May is 9.3h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 6 translates into these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Nassau, DE
- Average high temperature in May: 66.4°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (41.2°F).
- Average low temperature in May: 58.1°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (32°F).
Average pressure in May
Nassau, 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
Nassau, DE
- Average wind speed in May: 10.2mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in May
Nassau, DE
- Average humidity in May: 81%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall in May
Nassau, DE
- Average rainfall in May: 3.35"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.2").
Average rainfall days in May
Nassau, DE
- Average rainfall days in May: 18.2 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (9.6 days).
Average snowfall in May
Nassau, DE
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Nassau, DE
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Nassau, DE
- Average daylight in May: 14h and 18min
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 18min
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 0min).
Average sunshine days in May
Nassau, DE
- Average sunshine days in May: 9.8 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in May
Nassau, 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 and December (UV index 2).
Average cloud cover in May
Nassau, DE
- Average cloud cover in May: 38
The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in May
Nassau, 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).
