Lake Winyah — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Winyah, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Winyah today is 18.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| AUG 24 | 22.2°C | 23.4°C | |
| AUG 25 | 22.0°C | 23.4°C | |
| AUG 26 | 22.0°C | 23.4°C | |
| AUG 27 | 18.8°C | 23.4°C | |
| AUG 28 | 19.0°C | 23.4°C | |
| AUG 29 | 19.0°C | 23.4°C | |
| AUG 30 | 19.0°C | 23.4°C | |
| AUG 31 | 18.9°C | 23.4°C | |
| SEP 1 | 22.0°C | 18.7°C | |
| SEP 2 | 22.0°C | 18.9°C | |
| SEP 3 | 22.0°C | 19.0°C | |
| SEP 4 | 22.0°C | 19.2°C | |
| SEP 5 | 22.0°C | 19.4°C | |
| SEP 6 | 22.0°C | 19.6°C | |
| SEP 7 | 22.0°C | 19.7°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.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 0°C | 1°C | 4°C |
| February | 0°C | 2°C | 5°C |
| March | 1°C | 3°C | 6°C |
| April | 2°C | 6°C | 10°C |
| May | 5°C | 12°C | 19°C |
| June | 12°C | 18°C | 24°C |
| July | 18°C | 23°C | 27°C |
| August | 18°C | 23°C | 28°C |
| September | 17°C | 22°C | 27°C |
| October | 12°C | 16°C | 19°C |
| November | 3°C | 8°C | 12°C |
| December | 0°C | 3°C | 5°C |
Lake Winyah: Water Temperature by Location
Lake Winyah: Weather Forecast
September 1
September 2
September 3
September 4
September 5
September 6
Location & Local Information
Lake Winyah, like many small inland lakes in Michigan, follows a strong seasonal pattern in water temperature. In winter the surface is typically at or near freezing — around 32°F (0°C) — and the lake often develops ice cover. Spring brings a gradual warming with surface temperatures commonly in the 40–60°F (4–16°C) range as the water mixes and stratification breaks down. By summer, shallow areas and the upper water column usually warm to roughly 68–80°F (20–27°C), with the warmest late-summer pockets sometimes reaching the mid-70s to low 80s °F (24–28°C). In autumn the surface cools again, generally falling back into the 45–60°F (7–16°C) band before ice returns.
Swimming at Lake Winyah is typically possible during the ice-free months when temperatures and weather make it comfortable, but whether swimming is allowed depends on ownership, local regulations and posted advisories. Even in summer, water quality notifications (for algal blooms or bacterial contamination), lack of lifeguards, underwater hazards and variable depth can affect safety. Cold spring and late‑fall swims carry risks of cold‑water shock, and winter ice can be hazardous unless officially maintained for recreational use. Always check local signage and health advisories before entering the water.