Lake James — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake James, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake James today is 27.1°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 | 25.1°C | 24.5°C | |
| JUL 15 | 27.4°C | 24.5°C | |
| JUL 16 | 27.5°C | 24.5°C | |
| JUL 17 | 27.5°C | 24.5°C | |
| JUL 18 | 27.5°C | 24.5°C | |
| JUL 19 | 27.5°C | 24.5°C | |
| JUL 20 | 27.4°C | 24.5°C | |
| JUL 21 | 27.4°C | 24.5°C | |
| JUL 22 | 24.5°C | 27.0°C | |
| JUL 23 | 24.5°C | 26.8°C | |
| JUL 24 | 24.5°C | 26.7°C | |
| JUL 25 | 24.5°C | 26.6°C | |
| JUL 26 | 24.5°C | 26.5°C | |
| JUL 27 | 24.5°C | 26.3°C | |
| JUL 28 | 24.5°C | 26.2°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 | 1°C | 4°C | 6°C |
| March | 3°C | 6°C | 9°C |
| April | 5°C | 11°C | 16°C |
| May | 11°C | 14°C | 18°C |
| June | 16°C | 20°C | 25°C |
| July | 21°C | 25°C | 28°C |
| August | 23°C | 26°C | 28°C |
| September | 20°C | 24°C | 28°C |
| October | 14°C | 18°C | 21°C |
| November | 6°C | 10°C | 14°C |
| December | 3°C | 6°C | 9°C |
Lake James: Water Temperature by Location
Lake James: Weather Forecast
July 22
July 23
July 24
July 25
July 26
Location & Local Information
Lake James, in northeastern Indiana, experiences a wide annual swing in surface water temperatures. In winter the lake often approaches freezing, commonly ranging from about 32–40°F (0–4°C) under ice or in very cold open-water periods. Spring sees a steady rise as runoff and warming air push temperatures into roughly 45–65°F (7–18°C), depending on sunlight and depth. Summer brings the warmest conditions, with typical surface readings in the 70–78°F (21–26°C) band and occasional short-lived peaks near 80°F (27°C) during heat waves. As autumn advances the lake cools again, generally settling between about 50–68°F (10–20°C) before ice forms.
Swimming at Lake James is a regular summer activity and is allowed in many designated spots because water temperatures in mid‑summer are comfortable for recreational use. Public and private beaches, marinas, and waterfront properties provide access, and local authorities monitor conditions and post advisories when necessary for safety or water quality. Seasonal restrictions or lifeguard availability vary by location, and cold or near‑freezing temperatures outside summer make swimming unsafe due to hypothermia and ice hazards. Visitors should follow posted rules, check current temperature and water‑quality notices, and use appropriate precautions when entering the lake.