Lake Hamilton — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Hamilton, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Hamilton today is 30.7°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 | 30.9°C | 27.7°C | |
| AUG 5 | 30.8°C | 27.7°C | |
| AUG 6 | 31.7°C | 27.7°C | |
| AUG 7 | 31.7°C | 27.7°C | |
| AUG 8 | 31.8°C | 27.7°C | |
| AUG 9 | 31.8°C | 27.7°C | |
| AUG 10 | 31.2°C | 27.7°C | |
| AUG 11 | 30.7°C | 27.7°C | |
| AUG 12 | 27.7°C | 30.6°C | |
| AUG 13 | 27.7°C | 30.4°C | |
| AUG 14 | 27.7°C | 30.3°C | |
| AUG 15 | 27.7°C | 30.1°C | |
| AUG 16 | 27.7°C | 30.0°C | |
| AUG 17 | 27.7°C | 29.8°C | |
| AUG 18 | 27.7°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 | 4°C | 9°C | 14°C |
| March | 7°C | 13°C | 20°C |
| April | 12°C | 17°C | 21°C |
| May | 17°C | 22°C | 26°C |
| June | 19°C | 25°C | 30°C |
| July | 24°C | 29°C | 34°C |
| August | 24°C | 28°C | 32°C |
| September | 23°C | 27°C | 31°C |
| October | 20°C | 24°C | 27°C |
| November | 12°C | 17°C | 21°C |
| December | 6°C | 10°C | 13°C |
Lake Hamilton: Water Temperature by Location
Lake Hamilton: Weather Forecast
August 12
August 13
August 14
August 15
August 16
Location & Local Information
Lake Hamilton, located in Hot Springs in central Arkansas, is a large and popular reservoir formed on the Ouachita River. Its water temperature varies with the seasons, influenced by both local climate and flow from nearby hydroelectric dams. In winter, the surface temperature generally ranges between 7–11 °C (45–52 °F), too cold for swimming. During spring, as the weather warms, the lake’s temperature rises to about 15–21 °C (59–70 °F). By midsummer, Lake Hamilton reaches its warmest period, with surface waters averaging 25–30 °C (77–86 °F), while deeper sections remain several degrees cooler. In autumn, the water cools again to 15–20 °C (59–68 °F) as air temperatures drop and shorter days return.
Swimming in Lake Hamilton is allowed and very popular, particularly from late May through early September, when the water is warm and conditions are calm. The lake’s many coves, resorts, and public access points provide safe areas for swimming and recreation. The combination of warm summer water, scenic surroundings, and nearby amenities makes it one of the most visited lakes in the region. However, swimmers are advised to stay clear of boat channels and areas near the dam. Outside the summer months, cooler temperatures make swimming less comfortable, but Lake Hamilton remains active with boating and fishing year-round.