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 beginning of May signals a rise in the average high-temperature, moving from a fresh 55°F (12.8°C) in April to a comfortable 65.3°F (18.5°C). During May, an average low-temperature of 54.1°F (12.3°C) is observed in Roslyn Harbor, New York.Humidity
February, May and December, with an average relative humidity of 75%, are the most humid months.Rainfall
In Roslyn Harbor, during May, the rain falls for 17.2 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Roslyn Harbor, New York, during the entire year, the rain falls for 165.9 days and collects up to 37.56" (954mm) of precipitation.Snowfall
May through October are months without snowfall.Ocean temperature
In Roslyn Harbor, in May, the average water temperature is 54.1°F (12.3°C).Note: Swimming at temperatures less than 50°F (10°C) in 54.1°F (12.3°C) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 55.4°F (13°C) without adequate warmth can be discomforting.
Daylight
In Roslyn Harbor, New York, the average length of the day in May is 14h and 29min.On the first day of the month, sunrise is at 5:51 am and sunset at 7:51 pm. On the last day of May, in Roslyn Harbor, sunrise is at 5:25 am and sunset at 8:19 pm EDT.
Sunshine
In Roslyn Harbor, the average sunshine in May is 8.8h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In May, an average UV index of 5 transforms into the following instructions:
Ensure safety - Sun damage prevention is strongly urged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Roslyn Harbor?
What is the most humid month in Roslyn Harbor?
What is the average humidity in May in Roslyn Harbor?
How much does it rain in Roslyn Harbor in May?
When it does not snow in Roslyn Harbor?
Does it snow in Roslyn Harbor in May?
How cold is the water in May in Roslyn Harbor?
How many hours of daylight does Roslyn Harbor have in May?
When is the sunrise / sunset in May in Roslyn Harbor?
How many hours of sunshine does Roslyn Harbor have in May?
What is the UV index reading in May in Roslyn Harbor?
Average temperature in May
Roslyn Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, 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 Harbor, New York, USA
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