Cedar Island Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Cedar Island Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Cedar Island Lake today is 25.6°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 |
|---|---|---|---|
| AUG 4 | 26.5°C | 24.5°C | |
| AUG 5 | 26.5°C | 24.5°C | |
| AUG 6 | 26.1°C | 24.5°C | |
| AUG 7 | 25.2°C | 24.5°C | |
| AUG 8 | 25.3°C | 24.5°C | |
| AUG 9 | 25.5°C | 24.5°C | |
| AUG 10 | 25.5°C | 24.5°C | |
| AUG 11 | 25.6°C | 24.5°C | |
| AUG 12 | 24.5°C | 25.5°C | |
| AUG 13 | 24.5°C | 25.5°C | |
| AUG 14 | 24.5°C | 25.4°C | |
| AUG 15 | 24.5°C | 25.4°C | |
| AUG 16 | 24.5°C | 25.3°C | |
| AUG 17 | 24.5°C | 25.3°C | |
| AUG 18 | 24.5°C | 25.2°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 | 0°C | 6°C | 12°C |
| February | 1°C | 8°C | 15°C |
| March | 0°C | 9°C | 17°C |
| April | 1°C | 11°C | 20°C |
| May | 9°C | 16°C | 23°C |
| June | 16°C | 20°C | 24°C |
| July | 17°C | 23°C | 29°C |
| August | 21°C | 25°C | 28°C |
| September | 18°C | 20°C | 22°C |
| October | 5°C | 12°C | 19°C |
| November | 3°C | 7°C | 11°C |
| December | 1°C | 6°C | 11°C |
Cedar Island Lake: Water Temperature by Location
Cedar Island Lake: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
Cedar Island Lake in northern Minnesota follows the familiar seasonal pattern of shallow temperate lakes. After ice-out in spring, surface temperatures typically range from roughly 40–55°F (4–13°C) through May and early June, warming into the 60s–70s°F (16–24°C) by late June and July. Peak summer surface temperatures often reach about 70–80°F (21–27°C) on warm afternoons, with cooler temperatures a few feet below the surface. In autumn the surface cools back through the 50s–40s°F (10–5°C) as the lake mixes, and under winter ice the water column approaches near-freezing conditions, commonly around 33–39°F (0.5–4°C) near the bottom.
Swimming is commonly possible at Cedar Island Lake where shore access or public landings exist, and many people swim there in the warmest months because summer surface temperatures are comfortable for bathing. However, swimming may be limited by shoreline ownership, seasonal watercraft traffic, or natural hazards, and cold-water safety is a concern outside mid-summer: spring and fall waters can cause cold shock and reduced endurance, and winter conditions are unsafe for ordinary swimming. Visitors should use established access points, heed local signage and advisories, and judge onset and duration of swimming activity by current water temperatures and weather.