Jim Chapman Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Jim Chapman Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Jim Chapman Lake today is 32.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating. 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 | 31.7°C | 29.5°C | |
| AUG 5 | 31.7°C | 29.5°C | |
| AUG 6 | 31.7°C | 29.5°C | |
| AUG 7 | 31.8°C | 29.5°C | |
| AUG 8 | 31.9°C | 29.5°C | |
| AUG 9 | 32.0°C | 29.5°C | |
| AUG 10 | 32.0°C | 29.5°C | |
| AUG 11 | 33.0°C | 29.5°C | |
| AUG 12 | 29.5°C | 32.7°C | |
| AUG 13 | 29.5°C | 32.6°C | |
| AUG 14 | 29.5°C | 32.4°C | |
| AUG 15 | 29.5°C | 32.2°C | |
| AUG 16 | 29.5°C | 32.1°C | |
| AUG 17 | 29.5°C | 31.9°C | |
| AUG 18 | 29.5°C | 31.7°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 | 4°C | 10°C | 15°C |
| February | 4°C | 10°C | 16°C |
| March | 7°C | 14°C | 21°C |
| April | 13°C | 18°C | 23°C |
| May | 19°C | 23°C | 27°C |
| June | 22°C | 25°C | 28°C |
| July | 25°C | 29°C | 33°C |
| August | 26°C | 30°C | 33°C |
| September | 25°C | 28°C | 31°C |
| October | 21°C | 23°C | 26°C |
| November | 12°C | 17°C | 23°C |
| December | 11°C | 14°C | 17°C |
Jim Chapman Lake: Water Temperature by Location
Jim Chapman Lake: Weather Forecast
August 12
August 13
August 14
August 15
August 16
Location & Local Information
Jim Chapman Lake, a reservoir in northeastern Texas, experiences pronounced seasonal swings in surface water temperature that influence swimming comfort and safety. In winter the lake often drops into the 40s–50s °F (about 4–13 °C), producing brisk conditions unsuitable for prolonged immersion. Spring brings a steady warming with surface readings commonly in the mid‑50s to upper‑60s °F (13–20 °C) as air temperatures rise and sunlight increases. By summer the surface typically reaches the mid‑70s to upper‑80s °F (24–31 °C) on warm days, and shallow areas can warm even more; late summer stratification can leave deeper water noticeably cooler. Fall sees a gradual decline, with temperatures generally falling back into the 60s–70s °F (16–24 °C) before winter cooling resumes. Local weather, wind, depth and inflows can cause considerable variation from these general ranges.
Swimming is permitted at Jim Chapman Lake because it is managed for public recreation, and there are designated beach and park areas where visitors commonly enter the water. However, swimming is typically at your own risk—many park beaches do not have lifeguards—and conditions such as sudden depth changes, boat traffic, water quality advisories or algal blooms can limit safe swimming. Visitors should check current park guidance and water‑quality information, choose sheltered shallow areas for warmer temperatures, and exercise caution when temperatures are very low or when official advisories are in effect.