Grapevine Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Grapevine Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Grapevine Lake today is 30°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 | 30.2°C | 29.0°C | |
| JUL 17 | 30.0°C | 29.0°C | |
| JUL 18 | 31.6°C | 29.0°C | |
| JUL 19 | 31.9°C | 29.0°C | |
| JUL 20 | 32.0°C | 29.0°C | |
| JUL 21 | 32.3°C | 29.0°C | |
| JUL 22 | 32.5°C | 29.0°C | |
| JUL 23 | 30.0°C | 29.0°C | |
| JUL 24 | 29.0°C | 30.0°C | |
| JUL 25 | 29.0°C | 29.9°C | |
| JUL 26 | 29.0°C | 29.9°C | |
| JUL 27 | 29.0°C | 29.8°C | |
| JUL 28 | 29.0°C | 29.8°C | |
| JUL 29 | 29.0°C | 29.7°C | |
| JUL 30 | 29.0°C | 29.7°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 | 7°C | 11°C | 15°C |
| February | 6°C | 12°C | 18°C |
| March | 7°C | 14°C | 21°C |
| April | 16°C | 20°C | 25°C |
| May | 19°C | 23°C | 27°C |
| June | 23°C | 26°C | 29°C |
| July | 25°C | 29°C | 33°C |
| August | 26°C | 29°C | 31°C |
| September | 25°C | 28°C | 31°C |
| October | 21°C | 24°C | 27°C |
| November | 12°C | 17°C | 22°C |
| December | 8°C | 13°C | 18°C |
Grapevine Lake: Water Temperature by Location
Grapevine Lake: Weather Forecast
July 24
July 25
July 26
July 27
July 28
Location & Local Information
Grapevine Lake, a reservoir north of Dallas–Fort Worth, experiences pronounced seasonal swings in surface temperature. In summer months surface readings commonly range from about 80–90 °F (27–32 °C) on warm days, while spring and fall typically see 55–75 °F (13–24 °C) as the water transitions with ambient air temperatures. Winter surface values can drop into the 40–55 °F (4–13 °C) range, especially after cold fronts. Deeper water remains colder year-round and the lake can stratify, so surface conditions are the most relevant for swimmers and recreational users.
Swimming is generally permitted in and around Grapevine Lake because it is managed for multiple recreational uses, including boating, fishing and shoreline activities. Many parks and boat ramps allow people to enter the water, but there are usually no lifeguards and some areas are better suited for wading than open-water swimming. Water quality advisories, algal blooms, boat traffic and seasonal temperature shifts can affect safety; for example, cold winter water increases hypothermia risk and late-summer algal events can prompt temporary closures. Visitors should choose designated recreational areas, check current advisories, and take standard safety precautions when swimming.