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 arrival of May brings a temperature shift, with the average high-temperature escalating from a cool 54.7°F (12.6°C) in April to an enjoyable 64.6°F (18.1°C). Throughout May, a steady low-temperature average of 54.1°F (12.3°C) is noted.Humidity
May is the most humid month, with an average relative humidity of 77%.Rainfall
In May, the rain falls for 14.3 days. Throughout May, 1.65" (42mm) of precipitation is accumulated. In Hewlett Harbor, New York, during the entire year, the rain falls for 135.3 days and collects up to 18.62" (473mm) of precipitation.Snowfall
In Hewlett Harbor, snow does not fall in April through September.Ocean temperature
In May, the average ocean temperature in Hewlett Harbor, New York, is 54.1°F (12.3°C).Note: It is life-risking to swim in 54.1°F (12.3°C). Briefly staying in 55.4°F (13°C) waters feels unsettling, and temperatures below 50°F (10°C) might result in cold shock and loss of breath control, hinging on personal endurance.
Daylight
In Hewlett Harbor, the average length of the day in May is 14h and 28min.On the first day of May, sunrise is at 5:52 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 8:19 pm EDT.
Sunshine
The average sunshine in May in Hewlett Harbor is 8.9h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 5 in May leads to these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hewlett Harbor in May?
What is the most humid month in Hewlett Harbor?
What is the average humidity in May in Hewlett Harbor?
How many days does it rain in May in Hewlett Harbor?
When it does not snow in Hewlett Harbor?
What is the water temperature in May in Hewlett Harbor?
What is the average length of the day in May in Hewlett Harbor?
When are sunrise and sunset in May in Hewlett Harbor?
How long on average sun shines in May in Hewlett Harbor?
How high is the UV index in May in Hewlett Harbor?
Average temperature in May
Hewlett Harbor, NY
- Average high temperature in May: 64.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in May: 54.1°F
The month with the highest average low temperature is August (71.1°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in May
Hewlett 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
Hewlett Harbor, NY
- Average wind speed in May: 9.1mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in May
Hewlett Harbor, NY
- Average humidity in May: 77%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (72%).
Average rainfall in May
Hewlett Harbor, NY
- Average rainfall in May: 1.65"
The wettest months (with the highest rainfall) are July and August (2.32").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in May
Hewlett Harbor, NY
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in May
Hewlett Harbor, NY
- Average snowfall in May: 0"
The month with the highest snowfall is March (1.02").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in May
Hewlett Harbor, NY
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in May
Hewlett 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
Hewlett Harbor, NY
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
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 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Hewlett Harbor, NY
- Average sunshine days in May: 14.5 days
The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in May
Hewlett 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
Hewlett Harbor, NY
- Average cloud cover in May: 42
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Hewlett 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).
Hewlett Harbor, New York, USA
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