Sylvan Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Sylvan Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Sylvan Lake today is 16.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 | 18.4°C | 17.5°C | |
| OCT 6 | 18.4°C | 17.5°C | |
| OCT 7 | 18.4°C | 17.5°C | |
| OCT 8 | 17.4°C | 17.5°C | |
| OCT 9 | 17.6°C | 17.5°C | |
| OCT 10 | 17.4°C | 17.5°C | |
| OCT 11 | 16.6°C | 17.5°C | |
| OCT 12 | 16.9°C | 17.5°C | |
| OCT 13 | 17.5°C | 16.3°C | |
| OCT 14 | 17.5°C | 16.3°C | |
| OCT 15 | 17.5°C | 16.4°C | |
| OCT 16 | 17.5°C | 16.5°C | |
| OCT 17 | 17.5°C | 16.5°C | |
| OCT 18 | 17.5°C | 16.6°C | |
| OCT 19 | 17.5°C | 16.7°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 | 6°C |
| March | 0°C | 4°C | 9°C |
| April | 6°C | 11°C | 16°C |
| May | 11°C | 15°C | 19°C |
| June | 15°C | 20°C | 24°C |
| July | 20°C | 25°C | 29°C |
| August | 23°C | 27°C | 30°C |
| September | 20°C | 24°C | 28°C |
| October | 14°C | 18°C | 21°C |
| November | 4°C | 10°C | 15°C |
| December | 2°C | 6°C | 9°C |
Sylvan Lake: Water Temperature by Location
Sylvan Lake: Weather Forecast
October 13
October 14
October 15
October 16
October 17
October 18
Location & Local Information
Sylvan Lake in Indiana follows the seasonal patterns typical of small Midwestern lakes. In winter the surface commonly approaches freezing, roughly 32–40°F (0–4°C) and may develop ice cover that can persist for weeks depending on the winter. Spring sees a gradual warm-up, with surface temperatures often in the 40–60°F range (4–16°C) as the lake mixes and stratifies. During summer, the lake warms to its most comfortable levels for recreation, commonly between about 70–85°F (21–29°C) on warm afternoons, although short-term heat spells can push temperatures higher near the surface. In autumn the water cools again, typically falling into the 50–65°F band (10–18°C) as air temperatures drop and mixing resumes.
Swimming is generally allowed at Sylvan Lake during the warmer months where public access and marked swim areas exist, because summer surface temperatures are commonly within a comfortable range for bathing and lifesaving services or beaches may be present. Outside of the summer season swimming is discouraged: cold water risks hypothermia and, in winter, ice conditions create obvious hazards. Local rules, posted advisories and water-quality statements determine specific permissions and safe times to swim, so visitors should follow those guidelines before entering the water.