Dewart Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Dewart Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Dewart Lake today is 21.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 | 22.7°C | 23.0°C | |
| SEP 15 | 23.4°C | 23.0°C | |
| SEP 16 | 21.6°C | 23.0°C | |
| SEP 17 | 21.2°C | 23.0°C | |
| SEP 18 | 21.9°C | 23.0°C | |
| SEP 19 | 21.9°C | 23.0°C | |
| SEP 20 | 21.0°C | 23.0°C | |
| SEP 22 | 23.0°C | 21.2°C | |
| SEP 23 | 23.0°C | 21.3°C | |
| SEP 24 | 23.0°C | 21.4°C | |
| SEP 25 | 23.0°C | 21.5°C | |
| SEP 26 | 23.0°C | 21.6°C | |
| SEP 27 | 23.0°C | 21.7°C | |
| SEP 28 | 23.0°C | 21.8°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 | 0°C | 2°C | 5°C |
| February | 1°C | 4°C | 6°C |
| March | 3°C | 6°C | 9°C |
| April | 6°C | 10°C | 14°C |
| May | 11°C | 15°C | 20°C |
| June | 16°C | 20°C | 24°C |
| July | 23°C | 27°C | 30°C |
| August | 23°C | 26°C | 29°C |
| September | 19°C | 23°C | 27°C |
| October | 14°C | 17°C | 19°C |
| November | 5°C | 11°C | 16°C |
| December | 0°C | 4°C | 7°C |
Dewart Lake: Water Temperature by Location
Dewart Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Dewart Lake in northeastern Indiana experiences a clear seasonal rhythm in water temperature. In winter months the surface commonly approaches freezing, roughly 32–40°F (0–4°C), and the lake can develop ice cover depending on the year. Spring sees a steady rise, typically from about 40–60°F (4–16°C) as the water mixes and heats. Peak summer temperatures often arrive in June through August, when surface readings frequently range from the low 70s to low 80s°F (about 22–28°C), creating the warmest and most comfortable conditions for recreation. In autumn the lake cools again to roughly 50–65°F (10–18°C) before winter sets in.
Swimming in and around Dewart Lake is commonly practiced, particularly during the warm summer months when water temperatures are most suitable. Whether swimming is permitted in a given spot depends on local rules, private property boundaries, and periodic water-quality assessments; seasonal issues such as algal blooms, high bacterial counts after heavy rains, dense aquatic vegetation, or ice cover can make swimming unsafe at times. Visitors and residents are advised to follow posted advisories, respect private beaches, and use common-sense precautions such as checking recent conditions and avoiding swimming alone or in poor visibility.