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
May's arrival brings a temperature shift, moving from a cool 52.3°F (11.3°C) in April to a refreshing 65.7°F (18.7°C). Belfast registers a consistent average low-temperature of 45.1°F (7.3°C) during May.Humidity
May through July, with an average relative humidity of 79%, are the least humid months.Rainfall
In Belfast, in May, it is raining for 18.8 days, with typically 2.72" (69mm) of accumulated precipitation. Throughout the year, there are 170.2 rainfall days, and 29.29" (744mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Belfast. During 1.1 snowfall days, in May, Belfast aggregates 0.35" (9mm) of snow. Throughout the year, there are 95.9 snowfall days, and 45.12" (1146mm) of snow is accumulated.Daylight
In Belfast, the average length of the day in May is 14h and 37min.On the first day of May, sunrise is at 6:06 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:42 pm EDT.
Sunshine
In May, the average sunshine in Belfast is 8.4h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index in Belfast. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 5 in May translates into this advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the temperature in May in Belfast?
What are the least humid months in Belfast?
What is the average humidity in May in Belfast?
How much does it rain in Belfast in May?
What is the last month it snows in Belfast?
How many hours of daylight does Belfast have in May?
When are sunrise and sunset in May in Belfast?
How long on average sun shines in May in Belfast?
What is the month with the highest UV index in Belfast?
What is the UV index reading in May in Belfast?
Average temperature in May
Belfast, NY
- Average high temperature in May: 65.7°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in May: 45.1°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in May
Belfast, NY
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Belfast, NY
- Average wind speed in May: 7.6mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Belfast, NY
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in May
Belfast, NY
- Average rainfall in May: 2.72"
The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in May
Belfast, NY
- Average rainfall days in May: 18.8 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in May
Belfast, NY
- Average snowfall in May: 0.35"
The month with the highest snowfall is February (11.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Belfast, NY
- Average snowfall days in May: 1.1 days
The month with the highest number of snowfall days is January (20.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Belfast, NY
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in May
Belfast, NY
- Average sunshine days in May: 9.8 days
The month with the most sunshine days is September (12 days).
The month with the least sunshine days is February (5.2 days).
Average UV index in May
Belfast, NY
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Belfast, NY
- Average cloud cover in May: 48
The month with the most cloud cover is January (Cloud cover 78).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in May
Belfast, NY
- Average visibility in May: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
Belfast, New York, USA
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