Harrisville water temp
This data the coastal Harrisville 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 water temperature in Harrisville
Water temperature in Harrisville today is 66.2°F. Based on our historical data over a period of ten years, the warmest water in this day in the Lake Huron near Harrisville was recorded in 2018 and was 70.5°F, and the coldest was recorded in 2019 at 62.6°F. Water temperature in Harrisville is expected to drop to 65.5°F in the next 10 days. September average water temperature in Harrisville is 65.5°F, the minimum temperature is 56.7°F, and the maximum is 71.8°F.
The swimming season in Harrisville lasts from July to August. During those months, Harrisville water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Harrisville in winter reaches 36.3°F, in spring 38.1°F, in summer the average temperature rises to 63.5°F, and in autumn it is 56.5°F.
Harrisville water temperature now
| September 5, 2025 |
|---|
| today temp |
| 66.2°F |
| September 4, 2025 |
|---|
| yesterday temp |
| 66.2°F |
Surf Forecast in Harrisville 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 Harrisville. 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 Harrisville. Data in table shown for September 5, 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 |
|---|---|---|---|
| 0' 9" | 0' 11" | 1' 8" | 3' 0" |
| 0.22 m | 0.27 m | 0.5 m | 0.91 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 3' 7" | 3' 3" | 2' 6" | 1' 7" |
| 1.08 m | 0.98 m | 0.75 m | 0.47 m |
Surf report in Harrisville
Harrisville weather forecast
Current temperature and weather
Data in a table show Harrisville temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Harrisville.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | |  |  |
| 55°F | 55.2°F | 57.4°F | 59.2°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| | | |
| 62.2°F | 62.6°F | 59.7°F | 56.7°F |
You may also be interested in other sections of our site for Harrisville: Sunrise and Sunset, Tides
Harrisville water temperature by month
These figures shows the average, minimum and maximum monthly water temperature in Harrisville. 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 Harrisville 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 | 35.2°F | 29.7°F | 40.8°F | cold |
| Water temperature in Harrisville in January | ||||
| February | 32.9°F | 29.3°F | 36°F | cold |
| Water temperature in Harrisville in February | ||||
| March | 33.6°F | 30.2°F | 38.3°F | cold |
| Water temperature in Harrisville in March | ||||
| April | 37.2°F | 31.8°F | 42.8°F | cold |
| Water temperature in Harrisville in April | ||||
| May | 43.7°F | 37.2°F | 54.9°F | cold |
| Water temperature in Harrisville in May | ||||
| June | 55°F | 42.1°F | 66.9°F | cold |
| Water temperature in Harrisville in June | ||||
| July | 66.2°F | 58.1°F | 73°F | cold |
| Water temperature in Harrisville in July | ||||
| August | 69.3°F | 63.7°F | 75°F | warm |
| Water temperature in Harrisville in August | ||||
| September | 65.5°F | 56.7°F | 71.8°F | cold |
| Water temperature in Harrisville in September | ||||
| October | 56.3°F | 47.3°F | 66.9°F | cold |
| Water temperature in Harrisville in October | ||||
| November | 47.5°F | 39.4°F | 56.8°F | cold |
| Water temperature in Harrisville in November | ||||
| December | 40.8°F | 31.6°F | 46.9°F | cold |
| Water temperature in Harrisville in December | ||||
Chart monthly average water temperature in Harrisville
