Spectacle Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Spectacle Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Spectacle Lake today is 19°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 |
|---|---|---|---|
| SEP 14 | 20.4°C | 20.9°C | |
| SEP 15 | 20.5°C | 20.9°C | |
| SEP 16 | 19.5°C | 20.9°C | |
| SEP 17 | 18.5°C | 20.9°C | |
| SEP 18 | 18.1°C | 20.9°C | |
| SEP 19 | 18.6°C | 20.9°C | |
| SEP 20 | 18.6°C | 20.9°C | |
| SEP 22 | 20.9°C | 19.1°C | |
| SEP 23 | 20.9°C | 19.2°C | |
| SEP 24 | 20.9°C | 19.3°C | |
| SEP 25 | 20.9°C | 19.4°C | |
| SEP 26 | 20.9°C | 19.5°C | |
| SEP 27 | 20.9°C | 19.6°C | |
| SEP 28 | 20.9°C | 19.7°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 | 8°C |
| February | 0°C | 4°C | 8°C |
| March | 0°C | 4°C | 8°C |
| April | 4°C | 8°C | 12°C |
| May | 9°C | 15°C | 22°C |
| June | 17°C | 22°C | 27°C |
| July | 20°C | 24°C | 28°C |
| August | 20°C | 25°C | 28°C |
| September | 18°C | 21°C | 24°C |
| October | 6°C | 13°C | 19°C |
| November | 3°C | 7°C | 11°C |
| December | 1°C | 4°C | 8°C |
Spectacle Lake: Water Temperature by Location
Spectacle Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Spectacle Lake in Minnesota experiences the typical seasonal swings of upper Midwestern lakes. After ice-out in spring, surface temperatures commonly rise from the low 50s °F (about 10–12 °C) into the 60s °F (15–20 °C) by late spring. Peak summer surface temperatures in July and August often reach the upper 60s to mid-70s °F (20–25 °C), occasionally touching the high 70s °F (25–26 °C) on warm, shallow spots. In fall the lake cools back through the 50s to 40s °F (10–5 °C) before refreezing; under ice in winter water at depth sits just above freezing, roughly 32–39 °F (0–4 °C). Deeper water remains substantially colder year-round due to stratification, so temperatures can vary widely with depth and location.
Swimming is generally possible during the warmer months when public or private access is available and no health advisories are in effect, because surface temperatures in summer are within a comfortable range for recreational use. Local rules, posted closures, and occasional harmful algal blooms or bacterial contamination can prohibit swimming, so checking current advisories is important. There are no safe conditions for open-water swimming when the lake is ice-covered, except for experienced ice-swimmers who take strict safety measures; enter the water only where permitted and with appropriate precautions.