World Resorts USA Mystic Weather

Mystic sea water temperature

Current sea water temperature:
+38.3°F
Minimum sea water temperature in March: 44.2°F
Maximum sea water temperature in March: 35.1°F
Average sea water temperature in March: 41.0°F

Sea water temperature for the last 10 days:

March 18 38.3°F March 13 38.5°F
March 17 36.9°F March 12 39.2°F
March 16 37.0°F March 11 36.9°F
March 15 37.2°F March 10 36.3°F
March 14 37.4°F March 9 36.0°F

When is the warmest sea in Mystic?

Based on the data about daily sea water temperature for the last three years the warmest sea in Mystic was noticed in August, July and September.

Monthly Sea Temperatures in Mystic, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 69.7°F. The highest and lowest sea temperatures during the month were 73.6°F and 67.8°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 68.9°F. The highest and lowest sea temperatures during the month were 72.0°F and 65.3°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 68.2°F. The highest and lowest sea temperatures during the month were 70.9°F and 66.9°F.

Best time for vacation in Mystic

Sunniest months:
November 16 days
December 14 days
October 14 days
Warmest months:
July 79.5 °F
August 78.1 °F
June 73.3 °F
Warmest sea temp:
August 70.0 °F
July 68.7 °F
September 68.2 °F
Coldest months:
January 36.2 °F
February 37.3 °F
December 41.1 °F
Rainiest months:
October 4 days
November 3 days
July 3 days
Windiest months:
January 10.5 mph
December 10.3 mph
March 9.9 mph

Mystic on a weather map

Mystic
+30°F
N 6 mph
Feels like: +27°F
Precip.: 0%
Places in USA:
Name
°F
+32°F
+75°F
+75°F
+79°F
+70°F
+66°F
+70°F
+70°F
+32°F
+63°F
+59°F
+57°F
+54°F
+61°F
+36°F
24 Hours Forecast
Mystic
Local time: 23:04
March 19, thursday
0000
30°F
N
6 mph
0300
30°F
NW
4 mph
0600
30°F
NW
5 mph
0900
34°F
NW
7 mph
1200
36°F
N
9 mph
1500
39°F
N
9 mph
1800
37°F
N
7 mph
2100
37°F
N
7 mph
Units of measurement: °C / °F