Lake Bonham — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Bonham, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Bonham today is 30.5°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 14 | 24.3°C | 28.3°C | |
| JUL 15 | 27.8°C | 28.3°C | |
| JUL 16 | 27.8°C | 28.3°C | |
| JUL 17 | 27.5°C | 28.3°C | |
| JUL 18 | 30.0°C | 28.3°C | |
| JUL 19 | 30.0°C | 28.3°C | |
| JUL 20 | 30.0°C | 28.3°C | |
| JUL 21 | 30.2°C | 28.3°C | |
| JUL 22 | 28.3°C | 30.4°C | |
| JUL 23 | 28.3°C | 30.3°C | |
| JUL 24 | 28.3°C | 30.2°C | |
| JUL 25 | 28.3°C | 30.1°C | |
| JUL 26 | 28.3°C | 30.0°C | |
| JUL 27 | 28.3°C | 29.8°C | |
| JUL 28 | 28.3°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 | 4°C | 9°C | 13°C |
| February | 5°C | 10°C | 15°C |
| March | 6°C | 13°C | 21°C |
| April | 14°C | 18°C | 23°C |
| May | 19°C | 23°C | 26°C |
| June | 23°C | 25°C | 28°C |
| July | 23°C | 28°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 | 22°C |
| December | 8°C | 12°C | 16°C |
Lake Bonham: Water Temperature by Location
Lake Bonham: Weather Forecast
July 22
July 23
July 24
July 25
July 26
Location & Local Information
Lake Bonham, a reservoir near Bonham, Texas, experiences typical North Texas seasonal water temperatures that influence swimming comfort. In winter the surface water commonly ranges from about 45–55°F (7–13°C), which most swimmers find cold and potentially hazardous without insulation. Spring brings warming waters around 55–70°F (13–21°C) as the lake responds to milder air temperatures. Peak summer conditions often produce the warmest surface readings, roughly 75–85°F (24–29°C) and occasionally a bit higher during heat waves, making swimming most comfortable. In autumn the lake cools back into an intermediate band near 60–75°F (15–24°C). Actual temperatures vary by depth, time of day, and recent weather, and stratification or shallow coves can be notably warmer or cooler than open water.
Swimming at Lake Bonham is generally permitted as part of its recreational use, but there are no statewide guarantees of lifeguarded beaches and local rules or posted advisories can restrict access in specific areas. Visitors should heed signage, watch for boat traffic, and be aware of water-quality notices such as algal blooms or turbidity that can temporarily close swimming spots. Because temperature affects comfort and safety—cold water increases hypothermia risk and warm conditions can encourage algae—checking current conditions before entering the water is advisable.