Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average sea temperature in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
The start of October comes with a reduction in the average high-temperature, receding from a pleasant 73.2°F (22.9°C) in September to an enjoyable 63°F (17.2°C). Registering an almost steady temperature, Hewlett Harbor's nights in October see an average low of 54.1°F (12.3°C).Humidity
In October, the average relative humidity is 74%.Rainfall
In Hewlett Harbor, in October, it is raining for 11.4 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, in Hewlett Harbor, New York, there are 135.3 rainfall days, and 18.62" (473mm) of precipitation is accumulated.Snowfall
Months with snowfall in Hewlett Harbor are January through March, October through December. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 15.8 snowfall days, and 2.95" (75mm) of snow is accumulated.Ocean temperature
In Hewlett Harbor, New York, the average seawater temperature in October is 63.7°F (17.6°C).Note: Swimming is not a pleasant activity for most when the water temperature is 63.7°F (17.6°C). As the water temperature drops from 69.8°F (21°C) to 59°F (15°C), breathing becomes more difficult to control.
Daylight
In October, the average length of the day is 11h and 7min.On the first day of October, sunrise is at 6:51 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:52 pm EDT.
Sunshine
In October, the average sunshine in Hewlett Harbor, New York, is 5.9h.UV index
In October, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 4 in October converts into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures in Hewlett Harbor?
What is the average humidity in October in Hewlett Harbor?
How many days does it rain in October in Hewlett Harbor?
When does it start to snow in Hewlett Harbor?
How cold is the water in October in Hewlett Harbor?
What is the average length of the day in October in Hewlett Harbor?
When are sunrise and sunset in October in Hewlett Harbor?
How many hours of sunshine does Hewlett Harbor have in October?
How high is the UV index in October in Hewlett Harbor?
Average temperature in October
Hewlett Harbor, NY
- Average high temperature in October: 63°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 October: 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 October
Hewlett Harbor, NY
- Average pressure in October: 30.02"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 October
Hewlett Harbor, NY
- Average wind speed in October: 11.1mph
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 October
Hewlett Harbor, NY
- Average humidity in October: 74%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (72%).
Average rainfall in October
Hewlett Harbor, NY
- Average rainfall in October: 1.61"
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 October
Hewlett Harbor, NY
- Average rainfall days in October: 11.4 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 October
Hewlett Harbor, NY
- Average snowfall in October: 0.08"
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 October
Hewlett Harbor, NY
- Average snowfall days in October: 0.1 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 October
Hewlett Harbor, NY
- Average sea temperature in October: 63.7°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 October /
Average sunshine in October
Hewlett Harbor, NY
- Average daylight in October: 11h and 1min
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 October: 5h 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 October
Hewlett Harbor, NY
- Average sunshine days in October: 17.4 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 October
Hewlett Harbor, NY
- Average UV index in October: 4
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 October
Hewlett Harbor, NY
- Average cloud cover in October: 39
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 October
Hewlett Harbor, NY
- Average visibility in October: 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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