Mystic water temp
This data the coastal Mystic ocean water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Current ocean temperature in Mystic
Water temperature in Mystic today is 67.6°F. Based on our historical data over a period of ten years, the warmest water in this day in Mystic was recorded in 2021 and was 70.3°F, and the coldest was recorded in 2013 at 64.4°F. Sea water temperature in Mystic is expected to drop to 65.1°F in the next 10 days. September average water temperature in Mystic is 67.8°F, the minimum temperature is 63.1°F, and the maximum is 72.9°F.
The swimming season in Mystic lasts from July to September. During those months, Mystic water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Mystic in winter reaches 43.3°F, in spring 45.3°F, in summer the average temperature rises to 66°F, and in autumn it is 62.2°F.
Mystic water temperature now
| September 25, 2025 |
|---|
| today temp |
| 67.6°F |
| September 24, 2025 |
|---|
| yesterday temp |
| 67.6°F |
The ocean salinity in Mystic is 28.86‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Mystic for today
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Mystic. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Mystic. Data in table shown for September 25, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
| 1' 10" | 1' 9" | 1' 8" | 2' 2" |
| 0.55 m | 0.54 m | 0.52 m | 0.65 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 2' 2" | 2' 5" | 2' 5" | 2' 10" |
| 0.67 m | 0.73 m | 0.74 m | 0.87 m |
Surf report in Mystic
Mystic weather forecast
Current temperature and weather
Data in a table show Mystic temperature today (September 25, 2025). For more information and forecast for a few days, go to the weather forecast Mystic.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | |  | |
| 65.8°F | 65.5°F | 65.7°F | 68.4°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| | | |
| 70°F | 70.2°F | 70.3°F | 70°F |
You may also be interested in other sections of our site for Mystic: Sunrise and Sunset, Tides
Mystic water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Mystic. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Mystic on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
| Month | Avr | Min | Max | |
|---|---|---|---|---|
| January | 42.3°F | 37°F | 49.6°F | cold |
| Ocean water temperature in Mystic in January | ||||
| February | 39.4°F | 32.5°F | 44.2°F | cold |
| Ocean water temperature in Mystic in February | ||||
| March | 40.1°F | 33.1°F | 50.7°F | cold |
| Ocean water temperature in Mystic in March | ||||
| April | 44.2°F | 36.3°F | 51.6°F | cold |
| Ocean water temperature in Mystic in April | ||||
| May | 51.4°F | 44.8°F | 62.6°F | cold |
| Ocean water temperature in Mystic in May | ||||
| June | 60.4°F | 53.6°F | 68.9°F | cold |
| Ocean water temperature in Mystic in June | ||||
| July | 67.8°F | 61.7°F | 74.5°F | cold |
| Ocean water temperature in Mystic in July | ||||
| August | 69.6°F | 64.4°F | 74.8°F | warm |
| Ocean water temperature in Mystic in August | ||||
| September | 67.8°F | 63.1°F | 72.9°F | cold |
| Ocean water temperature in Mystic in September | ||||
| October | 63°F | 56.1°F | 68°F | cold |
| Ocean water temperature in Mystic in October | ||||
| November | 55.8°F | 49.5°F | 62.6°F | cold |
| Ocean water temperature in Mystic in November | ||||
| December | 48.2°F | 41.5°F | 53.8°F | cold |
| Ocean water temperature in Mystic in December | ||||
Chart monthly average water temperature in Mystic
