Winisk — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Winisk (Ontario, Canada). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Winisk help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Winisk in the Hudson Bay today is -1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Winisk will be -0.9°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| APR 10 | -1.0°C | -1.0°C | |
| APR 11 | -1.0°C | -1.8°C | |
| APR 12 | -0.8°C | -1.8°C | |
| APR 13 | -1.0°C | -1.0°C | |
| APR 14 | -1.0°C | -1.0°C | |
| APR 15 | -0.8°C | -1.0°C | |
| APR 16 | -0.8°C | -1.0°C | |
| APR 17 | -1.0°C | -1.0°C | |
| APR 18 | -0.8°C | -1.0°C | -0.8°C |
| APR 19 | -1.0°C | -0.8°C | |
| APR 20 | -1.0°C | -0.8°C | |
| APR 21 | -1.3°C | -0.9°C | |
| APR 22 | -1.0°C | -0.9°C | |
| APR 23 | -1.0°C | -0.9°C | |
| APR 24 | -1.0°C | -0.9°C | |
| APR 25 | -1.0°C | -0.9°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Winisk sits on the northeastern shore of Hudson Bay at the mouth of the Winisk River in northern Ontario, a subarctic location where water temperatures reflect a short, cool season and long periods of ice cover. In winter and into spring the bay and river are at or below freezing, with surface water and shore ice roughly 0°C or colder until breakup. As the ice clears in late spring and early summer, surface temperatures commonly rise into the range of about 0°C to 4°C. During the warmest weeks of July and August, sheltered shallows of the Winisk River and nearshore tidal flats can reach roughly 5°C to 12°C, while open waters of Hudson Bay along the coast typically remain colder, often around 4°C to 8°C even at midsummer. By early autumn temperatures decline rapidly as cooling and ice formation resume.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | -2°C | -1°C | -1°C |
| February | -2°C | -1°C | -1°C |
| March | -2°C | -1°C | -1°C |
| April | -3°C | -1°C | -1°C |
| May | -3°C | -1°C | 0°C |
| June | -3°C | 0°C | 3°C |
| July | -1°C | 4°C | 9°C |
| August | 4°C | 8°C | 12°C |
| September | 1°C | 7°C | 12°C |
| October | 0°C | 4°C | 10°C |
| November | -2°C | 1°C | 6°C |
| December | -3°C | -1°C | 0°C |
* Click on a month to view detailed water temperature data.
Winisk: Weather Forecast
April 19
April 20
April 21
April 22
Location, Beaches & Local Information
Swimming Conditions
Given those temperatures and the region’s remoteness, swimming opportunities are limited and seasonal. Brief dips in protected river shallows and small bays are the most realistic options for visitors during the warmest weeks, though even then water feels very cold and hypothermia risk is real without appropriate clothing or short exposure times. There are few developed beaches or lifeguarded amenities; tidal change, currents and debris from spring breakup can affect safety. For a beach-style holiday, expectations should center on short, brisk swims, shoreline exploration and water-adapted gear rather than long, warm-water bathing.