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 sea temperature 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
The transition from April to May brings a temperature rise, with average high-temperatures increasing from a fresh 55°F (12.8°C) to an enjoyable 65.3°F (18.5°C). Throughout May, Roslyn witnesses a consistent average low-temperature of 54.1°F (12.3°C).Humidity
The months with the highest humidity are February, May and December, with an average relative humidity of 75%.Rainfall
In Roslyn, during May, the rain falls for 17.2 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Roslyn, during the entire year, the rain falls for 165.9 days and collects up to 37.56" (954mm) of precipitation.Snowfall
In Roslyn, snow does not fall in May through October.Ocean temperature
In Roslyn, the average seawater temperature in May is 54.1°F (12.3°C).Note: Diving into 54.1°F (12.3°C) when it's under 50°F (10°C) can cause immediate cold shock symptoms, marked by hyperventilation.
Daylight
The average length of the day in May is 14h and 29min.On the first day of May, sunrise is at 5:51 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:19 pm EDT.
Sunshine
The average sunshine in May is 8.8h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 during May translates into the following directions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What are the most humid months?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
What is the water temperature in May?
How many hours of daylight does Roslyn have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Roslyn have in May?
What is the UV index reading in May?
Average temperature in May
Roslyn, NY
- Average high temperature in May: 65.3°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 (36.5°F).
- Average low temperature in May: 54.1°F
The months with the highest average low temperature are July and August (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in May
Roslyn, NY
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Roslyn, NY
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in May
Roslyn, NY
- Average humidity in May: 75%
The months with the highest relative humidity are February, May and December (75%).
The months with the lowest relative humidity are August and November (71%).
Average rainfall in May
Roslyn, NY
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (2.4").
Average rainfall days in May
Roslyn, NY
- Average rainfall days in May: 17.2 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in May
Roslyn, NY
- Average snowfall in May: 0"
The month with the highest snowfall is March (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Roslyn, NY
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in May
Roslyn, NY
- Average sea temperature in May: 54.1°F
The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).
Average daylight in May /
Average sunshine in May
Roslyn, NY
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Roslyn, NY
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in May
Roslyn, NY
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Roslyn, NY
- Average cloud cover in May: 43
The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in May
Roslyn, NY
- 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).
Roslyn, New York, USA
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