Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average sea temperature in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
July
Weather in July
Temperature
July brings a slight rise in Nantucket's average high-temperature, moving from a refreshing 62.6°F (17°C) in June to a pleasant 70.5°F (21.4°C). During July, Nantucket's nights hold steady with an average temperature of 67.3°F (19.6°C), barely dropping from the daytime highs.Humidity
The most humid month is July, with an average relative humidity of 86%.Rainfall
In Nantucket, in July, it is raining for 13.4 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, there are 153 rainfall days, and 26.61" (676mm) of precipitation is accumulated.Snowfall
In Nantucket, snow does not fall in April through October.Ocean temperature
In July, the average ocean temperature is 64.9°F (18.3°C).Note: The majority of individuals find it unpleasurable to swim in 64.9°F (18.3°C). It becomes progressively harder to manage one's breathing as the water temperature falls below 69.8°F (21°C).
Daylight
The average length of the day in July is 14h and 49min.On the first day of the month, sunrise is at 5:11 am and sunset at 8:17 pm. On the last day of July, sunrise is at 5:35 am and sunset at 7:58 pm EDT.
Sunshine
July and August, with an average of 10.7h of sunshine, are months with the most sunshine.UV index
July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in July?
What is the most humid month?
What is the average humidity in July?
How many days does it rain in July?
When it does not snow in Nantucket?
How cold is the water in July?
What is the average length of the day in July in Nantucket?
What time are sunrise and sunset in July in Nantucket?
What are the months with the most sunshine?
How long on average sun shines in July?
What is the month with the highest UV index?
What is the UV index reading in July?
Average temperature in July
Nantucket, MA
- Average high temperature in July: 70.5°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 July: 67.3°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 July
Nantucket, MA
- Average pressure in July: 29.96"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 July
Nantucket, MA
- Average wind speed in July: 11.9mph
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 July
Nantucket, MA
- Average humidity in July: 86%
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 July
Nantucket, MA
- Average rainfall in July: 1.81"
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 July
Nantucket, MA
- Average rainfall days in July: 13.4 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 July
Nantucket, MA
- Average snowfall in July: 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 July
Nantucket, MA
- Average snowfall days in July: 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 July
Nantucket, MA
- Average sea temperature in July: 64.9°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 July /
Average sunshine in July
Nantucket, MA
- Average daylight in July: 14h and 5min
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 July: 10h 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 July
Nantucket, MA
- Average sunshine days in July: 16.1 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 July
Nantucket, MA
- Average UV index in July: 6
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 July
Nantucket, MA
- Average cloud cover in July: 29
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 July
Nantucket, MA
- Average visibility in July: 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).