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
October
Weather in October
Temperature
The arrival of October in Nantucket signals a subtle shift in temperature, down from a comfortable 67.6°F (19.8°C) in September to a still enjoyable 60.8°F (16°C). Registering an almost steady temperature, Nantucket's nights in October see an average low of 56.3°F (13.5°C).Humidity
In October, the average relative humidity is 77%.Rainfall
The month with the most rainfall is October, when the rain falls for 13.8 days and typically aggregates up to 3.27" (83mm) of precipitation.Snowfall
April through October are months without snowfall.Ocean temperature
In October, the average ocean temperature is 59.9°F (15.5°C).Note: For most, swimming in 59.9°F (15.5°C) is not a pleasant experience. As the temperature falls from 69.8°F (21°C) to 59°F (15°C), controlling one's breathing becomes more difficult.
Daylight
In Nantucket, Massachusetts, the average length of the day in October is 11h and 5min.On the first day of the month, sunrise is at 6:37 am and sunset at 6:21 pm. On the last day of October, sunrise is at 7:11 am and sunset at 5:36 pm EDT.
Sunshine
In October, the average sunshine is 6.7h.UV index
In October, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In October, the UV index of 4 transforms into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in October?
What is the average humidity in October?
What is the rainiest month?
How many days does it rain in October in Nantucket?
When it does not snow?
Does it snow in October?
How cold is the water in October?
How many hours of daylight does Nantucket have in October?
What time are sunrise and sunset in October in Nantucket?
How long on average sun shines in October?
What is the UV index intensity in October?
Average temperature in October
Nantucket, MA
- Average high temperature in October: 60.8°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 October: 56.3°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 October
Nantucket, MA
- Average pressure in October: 30.01"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 October
Nantucket, MA
- Average wind speed in October: 16.4mph
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 October
Nantucket, MA
- Average humidity in October: 77%
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 October
Nantucket, MA
- Average rainfall in October: 3.27"
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 October
Nantucket, MA
- Average rainfall days in October: 13.8 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 October
Nantucket, MA
- Average snowfall in October: 0"
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 October
Nantucket, MA
- Average snowfall days in October: 0 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 October
Nantucket, MA
- Average sea temperature in October: 59.9°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 October /
Average sunshine in October
Nantucket, MA
- Average daylight in October: 11h and 1min
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 October: 6h 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 October
Nantucket, MA
- Average sunshine days in October: 14.3 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 October
Nantucket, MA
- Average UV index in October: 4
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 October
Nantucket, MA
- Average cloud cover in October: 40
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 October
Nantucket, MA
- 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).