Blue Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Blue Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Blue Lake today is 24.8°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 | 27.0°C | 24.5°C | |
| AUG 5 | 26.8°C | 24.5°C | |
| AUG 6 | 26.7°C | 24.5°C | |
| AUG 7 | 25.8°C | 24.5°C | |
| AUG 8 | 25.4°C | 24.5°C | |
| AUG 9 | 25.7°C | 24.5°C | |
| AUG 10 | 24.5°C | 24.5°C | |
| AUG 11 | 24.8°C | 24.5°C | |
| AUG 12 | 24.5°C | 24.8°C | |
| AUG 13 | 24.5°C | 24.8°C | |
| AUG 14 | 24.5°C | 24.8°C | |
| AUG 15 | 24.5°C | 24.7°C | |
| AUG 16 | 24.5°C | 24.7°C | |
| AUG 17 | 24.5°C | 24.7°C | |
| AUG 18 | 24.5°C | 24.7°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 | 3°C | 6°C |
| February | 0°C | 3°C | 7°C |
| March | 0°C | 3°C | 7°C |
| April | 3°C | 8°C | 13°C |
| May | 10°C | 16°C | 22°C |
| June | 16°C | 22°C | 27°C |
| July | 21°C | 24°C | 28°C |
| August | 21°C | 25°C | 28°C |
| September | 18°C | 21°C | 23°C |
| October | 6°C | 13°C | 19°C |
| November | 3°C | 7°C | 11°C |
| December | 1°C | 4°C | 6°C |
Blue Lake: Water Temperature by Location
Blue Lake: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
Blue Lake in Minnesota follows the typical seasonal pattern of small temperate lakes. Surface temperatures are usually at or just below freezing in winter when the lake is ice-covered, around 32°F (0°C) or lower. In spring the water warms slowly, commonly ranging from roughly 40–60°F (4–16°C) as ice melts and runoff cools the surface. Summer brings the warmest conditions: typical daytime surface temperatures are often between 65–80°F (18–27°C), and during warm spells can briefly reach the low 80s°F (around 28–29°C). By fall the surface cools again toward roughly 45–60°F (7–16°C). Deeper water remains noticeably cooler year-round, and thermal stratification in summer means temperatures drop quickly below the upper layer.
Swimming is generally permitted when the lake is ice-free, and many people swim in the warmer months when surface temperatures are comfortable. Local authorities or lake associations may post advisories or restrict access for safety or health reasons, for example during harmful algal blooms, high bacteria counts after heavy rains, or when ice makes conditions unsafe. Cold shock is a hazard in spring and late fall when water is chilly, and swimmers should heed posted signs, use designated beaches or boat launches, and check current local water-quality and safety information before entering the lake.