Big Bay de Noc — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Big Bay de Noc, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Big Bay de Noc today is 17.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 |
|---|---|---|---|
| SEP 14 | 19.3°C | 17.6°C | |
| SEP 15 | 18.9°C | 17.6°C | |
| SEP 16 | 17.8°C | 17.6°C | |
| SEP 17 | 18.0°C | 17.6°C | |
| SEP 18 | 18.5°C | 17.6°C | |
| SEP 19 | 18.4°C | 17.6°C | |
| SEP 20 | 17.4°C | 17.6°C | |
| SEP 21 | 17.4°C | 17.6°C | |
| SEP 22 | 17.6°C | 17.4°C | |
| SEP 23 | 17.6°C | 17.4°C | |
| SEP 24 | 17.6°C | 17.4°C | |
| SEP 25 | 17.6°C | 17.4°C | |
| SEP 26 | 17.6°C | 17.5°C | |
| SEP 27 | 17.6°C | 17.5°C | |
| SEP 28 | 17.6°C | 17.5°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 | 2°C | 5°C | 7°C |
| February | 1°C | 5°C | 8°C |
| March | 0°C | 3°C | 5°C |
| April | 3°C | 7°C | 12°C |
| May | 7°C | 15°C | 23°C |
| June | 13°C | 18°C | 22°C |
| July | 17°C | 22°C | 27°C |
| August | 20°C | 24°C | 27°C |
| September | 12°C | 18°C | 24°C |
| October | 12°C | 15°C | 18°C |
| November | 0°C | 6°C | 12°C |
| December | 0°C | 3°C | 6°C |
Big Bay de Noc: Water Temperature by Location
Big Bay de Noc: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Big Bay de Noc is an embayment of Lake Michigan along Michigan’s Upper Peninsula, and its water temperatures follow a strong seasonal rhythm. In winter the bay often approaches freezing and can ice over, with surface temperatures around 32°F (0°C) or lower where ice persists. Spring sees a gradual rise, typically from the mid-30s to mid-50s °F (about 2–13°C) as the lake sheds ice and solar warming begins. Summer brings the warmest surface readings, commonly in the 60s to mid-70s °F (15–24°C) on warm, calm days; sheltered shallows can warm slightly more while deeper or wind-exposed areas remain cooler. By autumn the water cools again, often falling into the mid-40s to low-60s °F (7–16°C) depending on air temperatures and storms. Local depth, wind, and time of day create notable variation in these ranges.
Swimming is generally allowed at public access points and beaches around Big Bay de Noc, and many visitors swim in summer when surface temperatures are highest. However, seasonal cold, sudden weather changes, boat traffic, and limited lifeguard coverage mean swimmers should exercise caution: cold-water shock is a real risk below about 60°F (15°C), and conditions can change rapidly. Water quality is usually suitable for recreation but it’s wise to check local advisories and use designated swimming areas when available.