May weather forecastHatteras, NC
May
Weather in May
May's weather in Hatteras, North Carolina embraces the warmth of spring as it rolls into the sweltering summer months. With longer sunshine hours at 10.1 and a daylight period of 14 hours, outdoor lovers get more daylight to enjoy. Importantly, sea temperature registers at 70°F (21.1°C), drawing beachgoers and swimmers alike to the coast. Heat-resistant flora and fauna thrive in the welcoming climate. The noticeable shift is that the rainfall is mildly above average at 0.83" (21mm), over 8.5 days.Temperature
May in Hatteras witnesses a minor rise in the average high-temperature, transitioning from an enjoyable 64.8°F (18.2°C) in April to an agreeable 71.6°F (22°C). Hatteras, during May nights, records a temperature marginally cooler than the daytime average, at a refreshing 66.7°F (19.3°C).Humidity
May through July, with an average relative humidity of 79%, are the most humid months.Rainfall
In Hatteras, in May, during 8.5 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, there are 100.9 rainfall days, and 8.58" (218mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Ocean temperature
In Hatteras, the average seawater temperature in May is 69.8°F (21°C).Note: Swimming is not a pleasurable activity for most people when the water temperature is 69.8°F (21°C). Breathing control gets harder as the water temperature drops from 69.8°F (21°C) to 59°F (15°C).
Daylight
In May, the average length of the day is 14h and 2min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:48 pm. On the last day of May, sunrise is at 5:49 am and sunset at 8:11 pm EDT.
Sunshine
The average sunshine in May is 10.1h.UV index
In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Resist overexposure. Safeguarding from solar damage is indispensable. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Hatteras, NC
- Average high temperature in May: 71.6°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (54.5°F).
- Average low temperature in May: 66.7°F
The month with the highest average low temperature is July (78.4°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure in May
Hatteras, NC
- Average pressure in May: 30.04"Hg
The months with the highest atmospheric pressure are January, November and December (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in May
Hatteras, NC
- Average wind speed in May: 13.9mph
The windiest month (with the highest average wind speed) is March (17mph).
The calmest month (with the lowest average wind speed) is August (12mph).
Average humidity in May
Hatteras, NC
- Average humidity in May: 79%
The months with the highest relative humidity are May, June and July (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Hatteras, NC
- Average rainfall in May: 0.83"
The wettest month (with the highest rainfall) is August (1.06").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in May
Hatteras, NC
- Average rainfall days in May: 8.5 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is February (5.6 days).
Average snowfall days in May
Hatteras, NC
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January, February, March and December (0.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in May
Hatteras, NC
- Average sea temperature in May: 70°F
The best months for swimming (with the highest average sea temperature) are July and August (81°F).
The coldest month (with the lowest average sea temperature) is February (61°F).
Average daylight in May /
Average sunshine in May
Hatteras, NC
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 10h and 6min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in May
Hatteras, NC
- Average sunshine days in May: 16.5 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in May
Hatteras, NC
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in May
Hatteras, NC
- Average cloud cover in May: 32
The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in May
Hatteras, NC
- 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).
