Lake Nasworthy — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Nasworthy, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Nasworthy today is 31.2°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 |
|---|---|---|---|
| JUL 16 | 31.0°C | 30.0°C | |
| JUL 17 | 30.6°C | 30.0°C | |
| JUL 18 | 30.6°C | 30.0°C | |
| JUL 19 | 30.7°C | 30.0°C | |
| JUL 20 | 30.7°C | 30.0°C | |
| JUL 21 | 30.9°C | 30.0°C | |
| JUL 22 | 31.4°C | 30.0°C | |
| JUL 23 | 31.1°C | 30.0°C | |
| JUL 24 | 30.0°C | 31.1°C | |
| JUL 25 | 30.0°C | 31.1°C | |
| JUL 26 | 30.0°C | 31.0°C | |
| JUL 27 | 30.0°C | 31.0°C | |
| JUL 28 | 30.0°C | 30.9°C | |
| JUL 29 | 30.0°C | 30.8°C | |
| JUL 30 | 30.0°C | 30.8°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 | 8°C | 12°C | 17°C |
| February | 6°C | 11°C | 16°C |
| March | 9°C | 15°C | 22°C |
| April | 16°C | 20°C | 24°C |
| May | 19°C | 24°C | 29°C |
| June | 23°C | 26°C | 28°C |
| July | 27°C | 30°C | 33°C |
| August | 26°C | 29°C | 31°C |
| September | 25°C | 28°C | 31°C |
| October | 21°C | 23°C | 26°C |
| November | 12°C | 17°C | 21°C |
| December | 12°C | 11°C | 17°C |
Lake Nasworthy: Water Temperature by Location
Lake Nasworthy: Weather Forecast
July 24
July 25
July 26
July 27
July 28
Location & Local Information
Lake Nasworthy, a reservoir near San Angelo, Texas, experiences marked seasonal variation in surface water temperature. In winter the surface often cools to roughly 40–55°F (4–13°C). Spring brings steady warming, with typical ranges of about 55–75°F (13–24°C) as air temperatures rise. The warmest period is late summer when surface readings commonly reach 75–95°F (24–35°C), especially in shallower, sun‑exposed areas. In fall the water usually declines back into the 55–75°F (13–24°C) band as cooling progresses. These ranges can shift from year to year depending on local weather patterns, drought conditions, and recent precipitation.
Swimming at Lake Nasworthy is a common recreational activity and generally permitted, but it is mostly informal rather than managed beach swimming. The lake supports swimming when temperatures are comfortable—typically late spring through early fall—yet visitors should exercise caution because swimming areas may be unsupervised, boat traffic is present, and water quality can vary. Periodic algae blooms or other advisories can temporarily restrict or discourage swimming, so checking current local notices and observing posted signs is advisable. Personal safety measures, such as avoiding isolated spots, wearing a life jacket when boating, and entering cold water cautiously, are recommended.