April weather forecast
Mystic, CT

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Weather in April

April experiences a significant leap in temperatures to a welcoming 52.5°F (11.4°C), signaling the peak of the short-lived spring. With the snow completely melted away, locals and tourists can now enjoy full days outside. The landscape transitions from the drab winter tones to vibrant springtime hues, with flowering trees accentuating Mystic's quaint charm. The longer daylight hours, approximately 13.4 hours, provide ample time for sightseeing and other outdoor activities. Mystic blooms in April, making it an ideal month to experience the city's scenic beauty.

Temperature

In Mystic, the onset of April comes with an increased average high-temperature, moving from March's chilly 43.3°F (6.3°C) to a cool 52.5°F (11.4°C). Throughout the nights in April, an average low-temperature of 42.4°F (5.8°C) is noted in Mystic.

Humidity

The months with the lowest humidity in Mystic are January, March, April and November, with an average relative humidity of 74%.

Rainfall

In April, the rain falls for 16 days. Throughout April, 3.23" (82mm) of precipitation is accumulated. Throughout the year, there are 166.1 rainfall days, and 34.09" (866mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Mystic, Connecticut. April is the last month it regularly snows in Mystic, Connecticut. During 0.7 snowfall days, in April, Mystic aggregates 0.2" (5mm) of snow. In Mystic, during the entire year, snow falls for 24.7 days and aggregates up to 7.87" (200mm) of snow.

Ocean temperature

In Mystic, the average seawater temperature in April is 44.2°F (6.8°C).
Note: It is advised against swimming in 44.2°F (6.8°C) when it drops below 50°F (10°C). Such temperatures can cause extreme cold shock, leading to hyperventilation.

Daylight

In April, the average length of the day in Mystic is 13h and 21min.
On the first day of April, sunrise is at 6:29 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 7:44 pm EDT.

Sunshine

The average sunshine in April in Mystic, Connecticut, is 8.4h.

UV index

The average daily maximum UV index in April in Mystic is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A daily maximum UV index of 3 in April translates into the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Frequently asked questions

What are the temperatures in Mystic in April?

The average high-temperature, in April, in Mystic, is 52.5°F (11.4°C), while the average low-temperature is 42.4°F (5.8°C).

What are the least humid months in Mystic?

The months with the lowest humidity in Mystic are January, March, April and November, with an average relative humidity of 74%.

What is the average humidity in April in Mystic?

In April, the average relative humidity in Mystic, Connecticut, is 74%.

How much does it rain in Mystic in April?

In April, in Mystic, the rain falls for 16 days. Throughout April, 3.23" (82mm) of precipitation is accumulated.

What is the last month it snows in Mystic?

April is the last month it regularly snows. During 0.7 snowfall days, in April, Mystic aggregates 0.2" (5mm) of snow.

What is the ocean temperature in April in Mystic?

In April, the average ocean temperature in Mystic is 44.2°F (6.8°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.

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

In Mystic, the average day length in April is 13h and 21min.

What time are sunrise and sunset in April in Mystic?

In April, on the first day of the month, sunrise is at 6:29 am and sunset at 7:13 pm. On the last day of the month, in Mystic, Connecticut, sunrise is at 5:45 am and sunset at 7:44 pm EDT.

How long on average sun shines in April in Mystic?

The average sunshine duration in April in Mystic, Connecticut, is 8.4h.

What is the UV index reading in April in Mystic?

In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Mystic, CT

Average temperature in April - Mystic, CT
  • Average high temperature in April: 52.5°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 April: 42.4°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 April
Mystic, CT

Average pressure in April - Mystic, CT
  • Average pressure in April: 29.98"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 April
Mystic, CT

Average wind speed in April - Mystic, CT
  • Average wind speed in April: 11.1mph

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 April
Mystic, CT

Average humidity in April - Mystic, CT
  • Average humidity in April: 74%

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 April
Mystic, CT

Average rainfall in April - Mystic, CT
  • Average rainfall in April: 3.23"

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 April
Mystic, CT

Average rainfall days in April - Mystic, CT
  • Average rainfall days in April: 16 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 April
Mystic, CT

Average snowfall in April - Mystic, CT
  • Average snowfall in April: 0.2"

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 April
Mystic, CT

Average snowfall days in April - Mystic, CT
  • Average snowfall days in April: 0.7 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 April
Mystic, CT

Average sea temperature in April - Mystic, CT
  • Average sea temperature in April: 44.2°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 April /
Average sunshine in April
Mystic, CT

Average daylight in April / Average sunshine in April - Mystic, CT
  • Average daylight in April: 13h and 2min

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 April: 8h and 2min

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 April
Mystic, CT

Average sunshine days in April - Mystic, CT
  • Average sunshine days in April: 12.4 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 April
Mystic, CT

Average UV index in April - Mystic, CT
  • Average UV index in April: 3

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 April
Mystic, CT

Average cloud cover in April - Mystic, CT
  • Average cloud cover in April: 44

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 April
Mystic, CT

Average visibility in April - Mystic, CT
  • Average visibility in April: 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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