Glen Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Glen Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Glen Lake 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 |
|---|---|---|---|
| JUN 3 | 17.4°C | 17.5°C | |
| JUN 4 | 17.5°C | 17.5°C | |
| JUN 5 | 17.6°C | 17.5°C | |
| JUN 6 | 17.7°C | 17.5°C | |
| JUN 7 | 17.9°C | 17.5°C | |
| JUN 8 | 18.3°C | 17.5°C | |
| JUN 10 | 18.5°C | 17.5°C | |
| JUN 11 | 17.5°C | 18.5°C | |
| JUN 12 | 17.5°C | 18.4°C | |
| JUN 13 | 17.5°C | 18.4°C | |
| JUN 14 | 17.5°C | 18.3°C | |
| JUN 15 | 17.5°C | 18.3°C | |
| JUN 16 | 17.5°C | 18.2°C | |
| JUN 17 | 17.5°C | 18.2°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 | 3°C | 6°C | 9°C |
| February | 3°C | 6°C | 9°C |
| March | 0°C | 4°C | 8°C |
| April | 4°C | 9°C | 14°C |
| May | 9°C | 17°C | 23°C |
| June | 13°C | 18°C | 22°C |
| July | 18°C | 22°C | 25°C |
| August | 21°C | 24°C | 27°C |
| September | 12°C | 17°C | 21°C |
| October | 12°C | 16°C | 19°C |
| November | 0°C | 6°C | 12°C |
| December | 3°C | 3°C | 8°C |
Glen Lake: Water Temperature by Location
Glen Lake: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Glen Lake in northwest Michigan is known for clear, cool water fed by springs and cold groundwater. Seasonal surface temperatures vary widely: in winter the lake typically freezes or sits close to 32°F (0°C) at the surface, with water beneath ice remaining just above freezing. Spring sees a gradual rise from the low 30s into the 40s and 50s°F (0–10°C) as runoff and warming air temperatures influence the lake. By summer, surface temperatures commonly reach about 60–72°F (15–22°C) on most days and can climb into the mid-70s°F (around 24°C) in protected shallow bays during heat spells. In autumn the lake cools again, dropping from the 60s into the 40s°F (16–4°C) before ice returns.
Swimming at Glen Lake is allowed and popular during the warmer months because there are public beaches and park access points that welcome swimmers. The main considerations are water temperature and depth: the lake’s spring-fed nature and deeper basins keep much of the water cooler than small inland ponds, so swimming season is shorter and cold-water shock and hypothermia are real risks, especially outside peak summer. Visitors should use caution, supervise children, and heed local advisories and lifeguard guidance where provided.