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 12.3°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 |
|---|---|---|---|
| OCT 5 | 14.7°C | 12.0°C | |
| OCT 6 | 14.4°C | 12.0°C | |
| OCT 7 | 13.0°C | 12.0°C | |
| OCT 8 | 13.6°C | 12.0°C | |
| OCT 9 | 13.3°C | 12.0°C | |
| OCT 10 | 13.0°C | 12.0°C | |
| OCT 11 | 11.8°C | 12.0°C | |
| OCT 12 | 12.3°C | 12.0°C | |
| OCT 13 | 12.0°C | 12.3°C | |
| OCT 14 | 12.0°C | 12.3°C | |
| OCT 15 | 12.0°C | 12.3°C | |
| OCT 16 | 12.0°C | 12.2°C | |
| OCT 17 | 12.0°C | 12.2°C | |
| OCT 18 | 12.0°C | 12.2°C | |
| OCT 19 | 12.0°C | 12.2°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 | 21°C | 25°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
October 13
October 14
October 15
October 16
October 17
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.