May weather forecastSouth Wales, NY
May
Weather in May
May, the last month of the spring in South Wales, is an enjoyable month, with an average temperature ranging between min 47.3°F (8.5°C) and max 65.8°F (18.8°C).Temperature
With the beginning of May, South Wales's average high-temperature sees an increase, transitioning from a cool 52.3°F (11.3°C) in April to a comfortable 65.8°F (18.8°C). In May, the temperature drops to an average of 47.3°F (8.5°C) at night.Humidity
The months with the lowest humidity in South Wales are May, July and September, with an average relative humidity of 78%.Rainfall
The month with the most rainfall in South Wales is May, when the rain falls for 18 days and typically aggregates up to 3.07" (78mm) of precipitation.Snowfall
Months with snowfall in South Wales are January through May, October through December. May is the last month it regularly snows in South Wales. During 0.7 snowfall days, in May, South Wales aggregates 0.39" (10mm) of snow. In South Wales, during the entire year, snow falls for 88.4 days and aggregates up to 38.39" (975mm) of snow.Daylight
In South Wales, the average length of the day in May is 14h and 39min.On the first day of the month, sunrise is at 6:07 am and sunset at 8:15 pm. On the last day of May, sunrise is at 5:38 am and sunset at 8:45 pm EDT.
Sunshine
In South Wales, the average sunshine in May is 8.9h.UV index
The average daily maximum UV index in May in South Wales is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 5 during May leads to these instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Boost your sun resistance with garments that are densely woven yet spacious. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
South Wales, NY
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in May: 47.3°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in May
South Wales, NY
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
South Wales, NY
- Average wind speed in May: 7.6mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in May
South Wales, NY
- Average humidity in May: 78%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are May, July and September (78%).
Average rainfall in May
South Wales, NY
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in May
South Wales, NY
- Average rainfall days in May: 18 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is February (8 days).
Average snowfall in May
South Wales, NY
- Average snowfall in May: 0.39"
The month with the highest snowfall is February (9.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
South Wales, NY
- Average snowfall days in May: 0.7 days
The month with the highest number of snowfall days is January (19.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
South Wales, NY
- Average daylight in May: 14h and 36min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in May
South Wales, NY
- Average sunshine days in May: 10 days
The month with the most sunshine days is September (11.9 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in May
South Wales, NY
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
South Wales, NY
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
South Wales, NY
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (4mi).
