Diamond Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Diamond Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Diamond Lake today is 23.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 23 | 23.1°C | 21.3°C | |
| JUN 24 | 23.1°C | 21.3°C | |
| JUN 25 | 23.1°C | 21.3°C | |
| JUN 26 | 22.0°C | 21.3°C | |
| JUN 27 | 22.0°C | 21.3°C | |
| JUN 28 | 21.7°C | 21.3°C | |
| JUN 29 | 22.2°C | 21.3°C | |
| JUN 30 | 23.4°C | 21.3°C | |
| JUL 1 | 26.0°C | 23.5°C | |
| JUL 2 | 26.0°C | 23.7°C | |
| JUL 3 | 26.0°C | 23.8°C | |
| JUL 4 | 26.0°C | 23.9°C | |
| JUL 5 | 26.0°C | 24.1°C | |
| JUL 6 | 26.0°C | 24.2°C | |
| JUL 7 | 26.0°C | 24.3°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 | 4°C | 7°C |
| February | 0°C | 5°C | 9°C |
| March | 1°C | 6°C | 10°C |
| April | 4°C | 11°C | 17°C |
| May | 9°C | 15°C | 20°C |
| June | 17°C | 21°C | 25°C |
| July | 22°C | 26°C | 30°C |
| August | 21°C | 25°C | 29°C |
| September | 19°C | 23°C | 27°C |
| October | 11°C | 16°C | 21°C |
| November | 2°C | 7°C | 11°C |
| December | 0°C | 3°C | 6°C |
Diamond Lake: Water Temperature by Location
Diamond Lake: Weather Forecast
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July 4
July 5
Location & Local Information
Diamond Lake in Michigan experiences the full seasonal cycle typical of inland northern lakes. Surface water temperatures in winter and early spring commonly sit at or just above freezing, roughly 32–38°F (0–3°C) while ice is present. As the lake thaws and moves into late spring, temperatures climb into the 38–58°F (3–14°C) range. Peak summer surface temperatures are generally comfortable for swimming, most often between about 68–78°F (20–26°C), with occasional warm spells pushing shallow areas into the low 80s°F (27–28°C). In autumn the water cools back through the 50s to mid-60s°F (10–18°C) before refreezing.
Swimming at Diamond Lake is commonly permitted and enjoyed in the warmer months because summer surface temperatures are typically suitable for recreational use. Seasonal ice and near-freezing water in winter make swimming unsafe, and the cooler shoulder seasons carry risks of cold-water shock, so many people avoid entering the water until it has warmed. Local water-quality conditions, including algal blooms or advisories issued by health authorities, can affect whether swimming is recommended on any given day, so checking current notices and using standard safety practices is advisable before entering the lake.