Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
With the advent of January, Nantucket experiences an average high-temperature of an icy 40.3°F, mirroring a close resemblance to the previous month. Nantucket notes a steady average temperature of 32.9°F during the nights of January.Humidity
January, November and December, with an average relative humidity of 75%, are the least humid months in Nantucket.Rainfall
In January, the rain falls for 11.1 days. Throughout January, 2.24" of precipitation is accumulated. Throughout the year, there are 153 rainfall days, and 26.61" of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. The month with the most snowfall in Nantucket is January, when snow falls for 5.8 days and typically aggregates up to 1.06" of snow.Ocean temperature
In January, the average ocean temperature is 40.5°F.Note: During the act of swimming, this is a direct threat to life. Breathing becomes erratic and cognitive abilities decline rapidly. The importance of a specialized swimsuit to minimize thermal loss is paramount.
Daylight
In January, the average length of the day is 9h and 36min.On the first day of January, sunrise is at 7:06 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 4:55 pm EST.
Sunshine
In Nantucket, Massachusetts, the average sunshine in January is 4.6h.UV index
The months with the lowest UV index in Nantucket are January through March and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 2 during January translates into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
FAQ
Is January cold in Nantucket?
What are the least humid months in Nantucket?
What is the average humidity in January in Nantucket?
How many days does it rain in January in Nantucket?
What is the snowiest month in Nantucket?
How much does it snow in Nantucket in January?
How cold is the water in January in Nantucket?
What is the average length of the day in January in Nantucket?
When are sunrise and sunset in January in Nantucket?
How many hours of sunshine does Nantucket have in January?
What are the months with the lowest UV index in Nantucket?
What is the UV index intensity in January in Nantucket?
Average temperature in January
Nantucket, MA
- Average high temperature in January: 40.3°F
The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is February (39.7°F).
- Average low temperature in January: 32.9°F
The month with the highest average low temperature is August (68.7°F).
The coldest month (with the lowest average low temperature) is February (32.5°F).
Average pressure in January
Nantucket, MA
- Average pressure in January: 30"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Nantucket, MA
- Average wind speed in January: 18.5mph
The windiest month (with the highest average wind speed) is January (18.5mph).
The calmest month (with the lowest average wind speed) is August (11.8mph).
Average humidity in January
Nantucket, MA
- Average humidity in January: 75%
The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are January, November and December (75%).
Average rainfall in January
Nantucket, MA
- Average rainfall in January: 2.24"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is November (1.77").
Average rainfall days in January
Nantucket, MA
- Average rainfall days in January: 11.1 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (9.2 days).
Average snowfall in January
Nantucket, MA
- Average snowfall in January: 1.06"
The month with the highest snowfall is January (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Nantucket, MA
- Average snowfall days in January: 5.8 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in January
Nantucket, MA
- Average sea temperature in January: 40.5°F
The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).
Average daylight in January /
Average sunshine in January
Nantucket, MA
- Average daylight in January: 9h and 4min
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 January: 4h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in January
Nantucket, MA
- Average sunshine days in January: 11.3 days
The month with the most sunshine days is August (16.5 days).
The month with the least sunshine days is January (11.3 days).
Average UV index in January
Nantucket, MA
- Average UV index in January: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in January
Nantucket, MA
- Average cloud cover in January: 52
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in January
Nantucket, MA
- Average visibility in January: 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).
Nantucket, Massachusetts, USA
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