May weather forecast
Hatteras, NC

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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.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Hatteras in May?

The average high-temperature and low-temperature during May are 71.6°F (22°C) and 66.7°F (19.3°C) respectively.

What is the most humid month?

The months with the highest humidity are May through July, with an average relative humidity of 79%.

What is the average humidity in May?

In Hatteras, the average relative humidity in May is 79%.

How much does it rain in May?

In Hatteras, in May, during 8.5 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

When it does not snow?

In Hatteras, snow does not fall in April through November.

How cold is the water in May?

In Hatteras, in May, the average water temperature is 69.8°F (21°C). Swimming in 69.8°F (21°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in May?

The average day length in May is 14h and 2min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 6:10 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:11 pm EDT.

How many hours of sunshine does Hatteras have in May?

In May, the average sunshine duration is 10.1h.

What is the UV index reading in May?

In Hatteras, North Carolina, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Hatteras, NC

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / 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 1min

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 - 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 - 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 - 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 - 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).

Hatteras, North Carolina, USA

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