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
Saint Helena's transition into May is noticed by a slight rise in the average high-temperature, advancing from a pleasant 72.1°F (22.3°C) in April to a warm 80.1°F (26.7°C). Saint Helena's temperature in May lowers to a consistent average of 63.1°F (17.3°C) during the nights.Humidity
The average relative humidity in May is 76%.Rainfall
In Saint Helena, during May, the rain falls for 15.7 days and regularly aggregates up to 3.03" (77mm) of precipitation. In Saint Helena, during the entire year, the rain falls for 165.3 days and collects up to 34.21" (869mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In May, the average length of the day is 13h and 59min.On the first day of May, sunrise is at 6:20 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:18 pm EDT.
Sunshine
The average sunshine in May in Saint Helena, North Carolina, is 9.8h.UV index
In Saint Helena, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow in Saint Helena?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Saint Helena have in May?
How high is the UV index in May?
Average temperature in May
Saint Helena, NC
- Average high temperature in May: 80.1°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (52.7°F).
- Average low temperature in May: 63.1°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.7°F).
Average pressure in May
Saint Helena, NC
- Average pressure in May: 30.03"Hg
The months with the highest atmospheric pressure are January, November and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in May
Saint Helena, NC
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in May
Saint Helena, NC
- Average humidity in May: 76%
The month with the highest relative humidity is August (79%).
The months with the lowest relative humidity are January, February, March and April (74%).
Average rainfall in May
Saint Helena, NC
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is January (1.54").
Average rainfall days in May
Saint Helena, NC
- Average rainfall days in May: 15.7 days
The months with the highest number of rainy days are July and August (19.8 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in May
Saint Helena, NC
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Saint Helena, NC
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (1 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
Saint Helena, NC
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 9h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in May
Saint Helena, NC
- Average sunshine days in May: 13.1 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (8.1 days).
Average UV index in May
Saint Helena, NC
- Average UV index in May: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in May
Saint Helena, NC
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Saint Helena, 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).
Saint Helena, North Carolina, USA
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