Bay Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Bay Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Bay Lake today is 49°F.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing can be used. 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 |
|---|---|---|---|
| MAY 6 | 48°F | 56°F | |
| MAY 7 | 48°F | 56°F | |
| MAY 8 | 46°F | 56°F | |
| MAY 9 | 46°F | 56°F | |
| MAY 10 | 48°F | 56°F | |
| MAY 11 | 48°F | 56°F | |
| MAY 12 | 47°F | 56°F | |
| MAY 13 | 47°F | 56°F | |
| MAY 14 | 56°F | 49°F | |
| MAY 15 | 56°F | 50°F | |
| MAY 16 | 56°F | 50°F | |
| MAY 17 | 56°F | 51°F | |
| MAY 18 | 56°F | 51°F | |
| MAY 19 | 56°F | 51°F | |
| MAY 20 | 56°F | 52°F |
* 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 | 32°F | 34°F | 39°F |
| February | 32°F | 35°F | 39°F |
| March | 32°F | 35°F | 39°F |
| April | 34°F | 43°F | 50°F |
| May | 46°F | 56°F | 66°F |
| June | 57°F | 69°F | 81°F |
| July | 68°F | 74°F | 81°F |
| August | 70°F | 76°F | 82°F |
| September | 63°F | 68°F | 73°F |
| October | 43°F | 54°F | 64°F |
| November | 37°F | 45°F | 52°F |
| December | 34°F | 38°F | 43°F |
Bay Lake: Water Temperature by Location
Bay Lake: Weather Forecast
May 14
May 15
May 16
May 17
May 18
May 19
Location & Local Information
Bay Lake in Minnesota experiences a wide seasonal range in surface water temperatures. During winter the lake typically reaches near-freezing conditions around 32°F (0°C) where ice cover is common. In spring the surface warms from roughly 35–55°F (2–13°C) as snowmelt and seasonal warming progress. Summer brings the warmest conditions, with surface temperatures often in the 70–78°F range (21–26°C) on warm days, which is when the lake is most comfortable for recreational water use; deeper layers remain significantly colder year-round. Early fall sees a steady decline, with surface readings commonly falling to 50–65°F (10–18°C) as air temperatures cool.
Swimming in and around Bay Lake is generally permitted because it is a recreational water body with shoreline access used for boating, fishing, and swimming. The warm summer surface temperatures make swimming comfortable, but access and conditions depend on local rules, private shoreline ownership, and occasional water-quality advisories such as harmful algal blooms. Ice cover in winter makes open-water swimming unsafe, and cold water in spring and fall can pose hypothermia risk. Visitors should observe posted signs, follow local guidance, and be mindful of weather, water clarity, and temperature before entering the water.