Big Sand Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Big Sand Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Big Sand Lake today is 26.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. 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 |
|---|---|---|---|
| JUL 14 | 21.5°C | 21.7°C | |
| JUL 15 | 24.4°C | 21.7°C | |
| JUL 16 | 24.6°C | 21.7°C | |
| JUL 17 | 25.0°C | 21.7°C | |
| JUL 18 | 25.4°C | 21.7°C | |
| JUL 19 | 25.3°C | 21.7°C | |
| JUL 20 | 25.3°C | 21.7°C | |
| JUL 21 | 25.5°C | 21.7°C | |
| JUL 22 | 21.7°C | 26.2°C | |
| JUL 23 | 21.7°C | 25.9°C | |
| JUL 24 | 21.7°C | 25.7°C | |
| JUL 25 | 21.7°C | 25.5°C | |
| JUL 26 | 21.7°C | 25.2°C | |
| JUL 27 | 21.7°C | 25.0°C | |
| JUL 28 | 21.7°C | 24.8°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 | 1°C | 7°C | 12°C |
| February | 2°C | 9°C | 15°C |
| March | 0°C | 9°C | 17°C |
| April | 1°C | 11°C | 20°C |
| May | 3°C | 12°C | 21°C |
| June | 13°C | 18°C | 22°C |
| July | 17°C | 22°C | 27°C |
| August | 21°C | 25°C | 28°C |
| September | 16°C | 19°C | 22°C |
| October | 5°C | 12°C | 18°C |
| November | 1°C | 6°C | 11°C |
| December | 1°C | 4°C | 6°C |
Big Sand Lake: Water Temperature by Location
Big Sand Lake: Weather Forecast
July 22
July 23
July 24
July 25
July 26
July 27
Location & Local Information
Big Sand Lake typically follows the seasonal pattern of northern Minnesota lakes. In winter the surface is at or below freezing, around 32°F (0°C) with ice cover common; below the ice, deeper water remains near the temperature of maximum density at about 39°F (4°C). During spring the surface warms into the 40–55°F range (4–13°C) as ice melts and the lake stratifies. Summer surface temperatures often reach the warmest levels, commonly about 70–78°F (21–26°C) in open water and sometimes higher in shallow, sheltered bays up to about 80°F (27°C) on hot spells. In autumn the lake cools again with surface readings falling to roughly 45–60°F (7–16°C) as turnover begins.
Swimming is generally possible during the ice‑free months when water temperatures rise and public access points or beaches are open; local rules, private shoreline ownership, and posted advisories determine where it is permitted. Swimming is not appropriate when the lake is frozen or when authorities post warnings for water quality, harmful algal blooms, or unsafe conditions. Even in summer, water under about 70°F (21°C) can feel chilly and increase the risk of cold shock, so swimmers should use caution, swim with companions, and heed local signage and seasonal lifeguard availability.