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
With the transition into May, Port Royal experiences a subtle uplift in average high-temperatures, adjusting from an enjoyable 66.4°F (19.1°C) in April to a warm 75°F (23.9°C). During May nights, Port Royal witnesses a consistent average temperature of 57.2°F (14°C).Humidity
The months with the highest humidity in Port Royal, Virginia, are May and December, with an average relative humidity of 78%.Rainfall
In May, the rain falls for 17.3 days. Throughout May, 2.72" (69mm) of precipitation is accumulated. In Port Royal, during the entire year, the rain falls for 158.1 days and collects up to 30.47" (774mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day in Port Royal is 14h and 16min.On the first day of the month, sunrise is at 6:11 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:47 am and sunset at 8:25 pm EDT.
Sunshine
In Port Royal, the average sunshine in May is 9.2h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Port Royal, Virginia. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 6 during May leads to these instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Port Royal in May?
What is the most humid month in Port Royal?
What is the average humidity in May in Port Royal?
How much does it rain in Port Royal in May?
When it does not snow in Port Royal?
Does it snow in Port Royal in May?
How many hours of daylight does Port Royal have in May?
What time are sunrise and sunset in May in Port Royal?
How long on average sun shines in May in Port Royal?
What are the months with the highest UV index in Port Royal?
What is the UV index intensity in May in Port Royal?
Average temperature in May
Port Royal, VA
- Average high temperature in May: 75°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (42.3°F).
- Average low temperature in May: 57.2°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in May
Port Royal, VA
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Port Royal, VA
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in May
Port Royal, VA
- Average humidity in May: 78%
The months with the highest relative humidity are May and December (78%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Port Royal, VA
- Average rainfall in May: 2.72"
The wettest months (with the highest rainfall) are July and August (3.19").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in May
Port Royal, VA
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in May
Port Royal, VA
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Port Royal, VA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (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
Port Royal, VA
- 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 36min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in May
Port Royal, VA
- Average sunshine days in May: 11.9 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in May
Port Royal, VA
- 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
Port Royal, VA
- Average cloud cover in May: 42
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Port Royal, VA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Port Royal, Virginia, USA
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