June weather forecast
Mystic, CT

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Weather in June

The onset of June indicates the arrival of summer to Mystic, with average high temperatures reaching 70.9°F (21.6°C). The longer daylight hours, offering a maximum of 15.1 hours, mark the summer solstice period. This transitional phase into summer imbues the city with a vibrant hustle and bustle as locals and tourists alike venture outdoors to make the most of the warm weather and clear skies. Activities focused around the sparkling Mystic seashore, particularly bathing in the sea, become increasingly popular. June truly begins to highlight Mystic's appeal as a picturesque summer retreat.

Temperature

The coming of June brings a minor shift in Mystic's weather, with average high-temperatures adjusting from May's refreshing 62.6°F (17°C) to a pleasant 70.9°F (21.6°C). During the month of June, an average low-temperature of 59.4°F (15.2°C) is recorded in Mystic.

Humidity

With an average relative humidity of 81%, June is the most humid month in Mystic.

Rainfall

In Mystic, Connecticut, in June, it is raining for 15.8 days, with typically 2.83" (72mm) of accumulated precipitation. In Mystic, during the entire year, the rain falls for 166.1 days and collects up to 34.09" (866mm) of precipitation.

Snowfall

In Mystic, snow does not fall in May through September.

Ocean temperature

In June, the average ocean temperature in Mystic is 60.8°F (16°C).
Note: Swimming is not a pleasant activity for most when the water temperature is 60.8°F (16°C). As the water temperature drops from 69.8°F (21°C) to 59°F (15°C), breathing becomes more difficult to control.

Daylight

June has the longest days of the year, with an average of 15h and 6min of daylight.
On the first day of June in Mystic, sunrise is at 5:16 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:25 pm EDT.

Sunshine

The average sunshine in June is 9.6h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 in June translates into these instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

What are June temperatures in Mystic?

Mystic in June has an average high-temperature of 70.9°F (21.6°C) and an average low-temperature of 59.4°F (15.2°C).

What is the most humid month in Mystic?

With an average relative humidity of 81%, June is the most humid month in Mystic, Connecticut.

What is the average humidity in June in Mystic?

In June, the average relative humidity in Mystic is 81%.

How many days does it rain in June in Mystic?

In Mystic, in June, it is raining for 15.8 days, with typically 2.83" (72mm) of accumulated precipitation.

When it does not snow in Mystic?

May through September are months without snowfall in Mystic.

How cold is the water in June in Mystic?

In Mystic, the average seawater temperature in June is 60.8°F (16°C). Swimming in 60.8°F (16°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

When are the longest days in Mystic?

With an average of 15h and 6min of daylight, June has the longest days of the year in Mystic, Connecticut.

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

The average day length in June is 15h and 7min.

What time are sunrise and sunset in June in Mystic?

On the first day of June in Mystic, Connecticut, sunrise is at 5:16 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:25 pm EDT.

How many hours of sunshine does Mystic have in June?

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

When is the highest UV index in Mystic?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Mystic.

What is the UV index reading in June in Mystic?

The average daily maximum UV index in June in Mystic is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJuneJASOND
May
June
Jul
Average high temperature
62.6°F 17°C
70.9°F 21.6°C
77.9°F 25.5°C
Average low temperature
50.7°F 10.4°C
59.4°F 15.2°C
66.9°F 19.4°C
Average pressure
30.01" 762mmHg
29.93" 760mmHg
29.95" 761mmHg
Average wind speed
9.6mph 15.4km/h
8.6mph 13.8km/h
8.2mph 13.2km/h
Average max. wind speed
10.3mph 16.6km/h
9.3mph 15km/h
8.8mph 14.2km/h
Average wind speed gusts
15.8mph 25.4km/h
14.3mph 23km/h
13.4mph 21.6km/h
Average humidity
79%
81%
80%
Average rainfall
2.6" 66mm
2.83" 72mm
2.72" 69mm
Average rainfall days
16.6
15.8
17.1
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average sea temperature
51.7°F 10.9°C
60.9°F 16.1°C
68°F 20°C
Average daylight
14h 3min
15h 1min
14h 5min
Average sunshine
8h 4min
9h 4min
10h 3min
Average sunshine days
12.2
11.7
11.7
Average UV index
5
6
6
Average cloud cover
43%
37%
31%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in June
Mystic, CT

Average temperature in June - Mystic, CT
  • Average high temperature in June: 70.9°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in June: 59.4°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

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Average pressure in June
Mystic, CT

Average pressure in June - Mystic, CT
  • Average pressure in June: 29.93"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in June
Mystic, CT

Average wind speed in June - Mystic, CT
  • Average wind speed in June: 8.6mph

The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).

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Average humidity in June
Mystic, CT

Average humidity in June - Mystic, CT
  • Average humidity in June: 81%

The month with the highest relative humidity is June (81%).
The months with the lowest relative humidity are January, March, April and November (74%).

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Average rainfall in June
Mystic, CT

Average rainfall in June - Mystic, CT
  • Average rainfall in June: 2.83"

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in June
Mystic, CT

Average rainfall days in June - Mystic, CT
  • Average rainfall days in June: 15.8 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (10.1 days).

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Average snowfall in June
Mystic, CT

Average snowfall in June - Mystic, CT
  • Average snowfall in June: 0"

The month with the highest snowfall is March (2.44").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in June
Mystic, CT

Average snowfall days in June - Mystic, CT
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in June
Mystic, CT

Average sea temperature in June - Mystic, CT
  • Average sea temperature in June: 60.9°F

The best month for swimming (with the highest average sea temperature) is August (70.3°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
Mystic, CT

Average daylight in June / Average sunshine in June - Mystic, CT
  • 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 12min).

  • Average sunshine in June: 9h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

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Average sunshine days in June
Mystic, CT

Average sunshine days in June - Mystic, CT
  • Average sunshine days in June: 11.7 days

The month with the most sunshine days is November (16.5 days).
The months with the least sunshine days are June and July (11.7 days).

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Average UV index in June
Mystic, CT

Average UV index in June - Mystic, CT
  • Average UV index in June: 6

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 and December (UV index 2).

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Average cloud cover in June
Mystic, CT

Average cloud cover in June - Mystic, CT
  • Average cloud cover in June: 37

The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in June
Mystic, CT

Average visibility in June - Mystic, CT
  • 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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Mystic, Connecticut, USA

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