Measurements:
°C
°F
Mystic
12°F
S 10 mph
Feels like: 4°F
Precip: 0%
World Resorts USA Mystic Weather May Weather in Mystic

Mystic Weather: May

Average Day Temperature: 65.1°F
Average Night Temperature: 52.0°F
Sea Water Temperature: 51.9°F
Number of Sunny Days: 10 days
Sunshine Hours: 14.0 - 14.9 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.2 in

Air Temperature in May, °F

Select Year: 2025 2024 2023

The highest day temperature in May 2025 was 75°F. The lowest night temperature was 43°F. The average values for day and night temperatures during May were 65.0°F и 53.5°F respectivly.

Mystic Water Sea Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Mystic was 52.5°F. The maximum and minimum values were 47.2°F and 56.8°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Mystic is 1.2 in. This value is relatively stable throughout the year.

Wind Speed in May, mph

The average wind speed in May is 8.2 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Mystic in May is 7.2 hours.

Best Time to Visit Mystic
The most sunny months:
November 16 days
October 14 days
September 14 days
The most warm months:
July 82.8 °F
August 81.2 °F
June 75.9 °F
Warmest sea temperature:
August 72.2 °F
July 70.7 °F
September 70.2 °F
The most cold months:
January 35.3 °F
February 36.7 °F
December 40.9 °F
The most rainy months:
October 4 days
November 3 days
July 3 days
The most windy months:
January 10 mph
March 9 mph
February 9 mph

Mystic on the Weather Map

USA Resorts:
NAME
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Mystic
Local time: 03:42
05 dec, friday
0600 10°F
S
6 mph
0900 16°F
S
3 mph
1200 24°F
N
6 mph
1500 26°F
NE
7 mph
1800 28°F
NE
4 mph
2100 30°F
NE
3 mph
06 dec, saturday
0000 32°F
N
2 mph
0300 32°F
NE
1 mph