Mystic
Connecticut, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Mystic, CT

The last month of the summer, August, is also a moderately hot month in Mystic, Connecticut, with average temperature varying between 60.8°F (16°C) and 78.8°F (26°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still moderately hot 78.8°F (26°C). In August, the average low-temperature is 60.8°F (16°C).

Rainfall

In Mystic, during August, the rain falls for 9 days and regularly aggregates up to 4" (102mm) of precipitation. Throughout the year, in Mystic, there are 122 rainfall days, and 48.1" (1222mm) of precipitation is accumulated.

Ocean temperature

August is the month with the warmest seawater in Mystic, Connecticut, with an average ocean temperature of 70.3°F (21.3°C). Swimming in 70.3°F (21.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

The average length of the day is 13.8h.

Sunshine

In August, the average sunshine is 8h.

UV index

June through August, with an average maximum UV index of 8, are months with the highest UV index in Mystic, Connecticut. A UV Index of 8 to 10 symbolizes a very high health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
The average daily UV index of 8 transform into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in August in Mystic?

The average high-temperature, in August, in Mystic, is 78.8°F (26°C), while the average low-temperature is 60.8°F (16°C).

How many days does it rain in August in Mystic?

In August, in Mystic, the rain falls for 9 days. Throughout August, 4" (102mm) of precipitation is accumulated.

What is the month with the warmest ocean in Mystic?

The month with the warmest seawater is August, with an average ocean temperature of 70.3°F (21.3°C). Swimming in 70.3°F (21.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the ocean temperature in August in Mystic?

In August, the average ocean temperature in Mystic, Connecticut, is 70.3°F (21.3°C). For swimming, a surface water temperature of 70.3°F (21.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

How many hours of daylight does Mystic have in August?

The average length of the day in August in Mystic is 13.8h.

How many hours of sunshine does Mystic have in August?

In August, the average sunshine in Mystic is 8h.

What are the months with the highest UV index in Mystic?

Months with the highest UV index in Mystic, Connecticut, are June through August, with an average maximum UV index of 8.

What is the UV index reading in August in Mystic?

In Mystic, the average daily maximum UV index in August is 8. A UV Index reading of 8 to 10 represents a very high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in August - Mystic, CT
  • Average high temperature in August: 79°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in August: 61°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (19°F).

Average rainfall in August - Mystic, CT
  • Average rainfall in August: 4"

The wettest month (with the highest rainfall) is November (4.8").
The driest month (with the lowest rainfall) is June (3.3").

Average rainfall days in August - Mystic, CT
  • Average rainfall days in August: 9 days

The month with the highest number of rainy days is December (12 days).
Months with the lowest number of rainy days are September and October (8 days).

Average sea temperature in August - Mystic, CT
  • Average sea temperature in August: 70.3°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).

Average daylight in August / Average sunshine in August - Mystic, CT
  • Average daylight in August: 13.8h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in August: 8h

Months with most sunshine are May, June and July (Average sunshine: 9h).
Months with least sunshine are November and December (Average sunshine: 5).

Average UV index in August - Mystic, CT
  • Average UV index in August: 8

Months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 1).