June weather forecast
Nantucket, MA

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Beautiful homes built on the water overlooking the boats on the water below, in Nantucket, Massachusetts
Beautiful homes built on the water overlooking the boats on the water below, in Nantucket, Massachusetts

Weather in June

The first month of the summer, June, is a comfortable month in Nantucket, Massachusetts, with an average temperature fluctuating between 58.6°F (14.8°C) and 62.6°F (17°C).

Temperature

In June, the average high-temperature marginally rises from a fresh 54.3°F (12.4°C) in May to a comfortable 62.6°F (17°C). The average low-temperature, in Nantucket, is 58.6°F (14.8°C).

Humidity

The average relative humidity in June in Nantucket is 85%.

Rainfall

In June, in Nantucket, the rain falls for 13.9 days. Throughout June, 1.93" (49mm) of precipitation is accumulated. In Nantucket, during the entire year, the rain falls for 153 days and collects up to 26.61" (676mm) of precipitation.

Snowfall

In Nantucket, snow does not fall in April through October.

Ocean temperature

In Nantucket, the average seawater temperature in June is 57.2°F (14°C).
Note: Swimming in 57.2°F (14°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

With an average of 15h and 7min of daylight, June has the longest days of the year in Nantucket.
On the first day of the month, sunrise is at 5:09 am and sunset at 8:06 pm. On the last day of June, in Nantucket, sunrise is at 5:10 am and sunset at 8:17 pm EDT.

Sunshine

In June, the average sunshine is 9.6h.

UV index

The average daily maximum UV index in June in Nantucket is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 in June transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
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FAQ

What is the temperature in June in Nantucket?

In Nantucket, in June, the average high-temperature is 62.6°F (17°C), and the average low-temperature is 58.6°F (14.8°C).

What is the average humidity in June in Nantucket?

In June, the average relative humidity is 85%.

How many days does it rain in June in Nantucket?

In Nantucket, in June, during 13.9 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

When it does not snow in Nantucket?

In Nantucket, Massachusetts, snow does not fall in April through October.

How cold is the water in June in Nantucket?

In Nantucket, Massachusetts, the average seawater temperature in June is 57.2°F (14°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

When are the longest days in Nantucket?

June has the longest days of the year in Nantucket, Massachusetts, with an average of 15h and 7min of daylight.

What is the average length of the day in June in Nantucket?

In June, the average day length in Nantucket is 15h and 7min.

When is the sunrise / sunset in June in Nantucket?

In June, on the first day of the month, sunrise is at 5:09 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:17 pm EDT.

How long on average sun shines in June in Nantucket?

In Nantucket, the average sunshine duration in June is 9.6h.

How high is the UV index in June in Nantucket?

In June, the average daily maximum UV index in Nantucket is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJuneJASOND
May
June
Jul
Average high temperature
54.3°F 12.4°C
62.6°F 17°C
70.5°F 21.4°C
Average low temperature
50.5°F 10.3°C
58.6°F 14.8°C
67.3°F 19.6°C
Average pressure
30.02" 763mmHg
29.94" 760mmHg
29.96" 761mmHg
Average wind speed
13.9mph 22.4km/h
12.8mph 20.6km/h
11.9mph 19.2km/h
Average max. wind speed
14.9mph 24km/h
13.7mph 22km/h
12.6mph 20.3km/h
Average wind speed gusts
25.4mph 40.9km/h
23.3mph 37.5km/h
21.2mph 34.1km/h
Average humidity
85%
85%
86%
Average rainfall
2.05" 52mm
1.93" 49mm
1.81" 46mm
Average rainfall days
14.3
13.9
13.4
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average sea temperature
49.9°F 9.9°C
57.1°F 13.9°C
64.9°F 18.3°C
Average daylight
14h 3min
15h 1min
14h 5min
Average sunshine
8h 3min
9h 4min
10h 4min
Average sunshine days
14.8
14.9
16.1
Average UV index
4
5
6
Average cloud cover
44%
36%
29%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in June
Nantucket, MA

Average temperature in June - Nantucket, MA
  • Average high temperature in June: 62.6°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 June: 58.6°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).

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Average pressure in June
Nantucket, MA

Average pressure in June - Nantucket, MA
  • Average pressure in June: 29.94"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).

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Average wind speed in June
Nantucket, MA

Average wind speed in June - Nantucket, MA
  • Average wind speed in June: 12.8mph

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).

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Average humidity in June
Nantucket, MA

Average humidity in June - Nantucket, MA
  • Average humidity in June: 85%

The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are January, November and December (75%).

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Average rainfall in June
Nantucket, MA

Average rainfall in June - Nantucket, MA
  • Average rainfall in June: 1.93"

The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is November (1.77").

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Average rainfall days in June
Nantucket, MA

Average rainfall days in June - Nantucket, MA
  • Average rainfall days in June: 13.9 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).

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Average snowfall in June
Nantucket, MA

Average snowfall in June - Nantucket, MA
  • Average snowfall in June: 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").

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Average snowfall days in June
Nantucket, MA

Average snowfall days in June - Nantucket, MA
  • Average snowfall days in June: 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).

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Average sea temperature in June
Nantucket, MA

Average sea temperature in June - Nantucket, MA
  • Average sea temperature in June: 57.1°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).

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Average daylight in June /
Average sunshine in June
Nantucket, MA

Average daylight in June / Average sunshine in June - Nantucket, MA
  • Average daylight in June: 15h 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 June: 9h 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).

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Average sunshine days in June
Nantucket, MA

Average sunshine days in June - Nantucket, MA
  • Average sunshine days in June: 14.9 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).

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Average UV index in June
Nantucket, MA

Average UV index in June - Nantucket, MA
  • Average UV index in June: 5

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).

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Average cloud cover in June
Nantucket, MA

Average cloud cover in June - Nantucket, MA
  • Average cloud cover in June: 36

The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in June
Nantucket, MA

Average visibility in June - Nantucket, MA
  • Average visibility in June: 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).

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