Anderson Ranch Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Anderson Ranch Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Anderson Ranch Reservoir today is 19°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| JUN 2 | 16.2°C | 17.5°C | |
| JUN 3 | 16.2°C | 17.5°C | |
| JUN 4 | 16.8°C | 17.5°C | |
| JUN 5 | 17.1°C | 17.5°C | |
| JUN 6 | 17.1°C | 17.5°C | |
| JUN 7 | 18.3°C | 17.5°C | |
| JUN 8 | 19.4°C | 17.5°C | |
| JUN 10 | 17.5°C | 18.9°C | |
| JUN 11 | 17.5°C | 18.9°C | |
| JUN 12 | 17.5°C | 18.8°C | |
| JUN 13 | 17.5°C | 18.7°C | |
| JUN 14 | 17.5°C | 18.6°C | |
| JUN 15 | 17.5°C | 18.6°C | |
| JUN 16 | 17.5°C | 18.5°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 | 0°C | 2°C | 4°C |
| February | 1°C | 4°C | 6°C |
| March | 3°C | 5°C | 7°C |
| April | 3°C | 7°C | 11°C |
| May | 9°C | 13°C | 18°C |
| June | 14°C | 18°C | 21°C |
| July | 18°C | 24°C | 30°C |
| August | 21°C | 24°C | 26°C |
| September | 18°C | 21°C | 23°C |
| October | 12°C | 16°C | 20°C |
| November | 5°C | 10°C | 14°C |
| December | 1°C | 4°C | 6°C |
Anderson Ranch Reservoir: Water Temperature by Location
Anderson Ranch Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Anderson Ranch Reservoir typically runs cool for much of the year. Surface temperatures in winter commonly hover near freezing, roughly 32–40°F (0–4°C), and in spring they usually rise into the mid-30s to mid-50s Fahrenheit (2–13°C) as snowmelt and inflows continue. During summer, surface water can warm to a more comfortable range, often about 60–75°F (15–24°C) on warm afternoons, though evenings and cloudy periods bring lower readings. In fall the surface cools again, commonly falling to roughly 45–60°F (7–16°C). Because the reservoir is relatively deep in places and fed by mountain inflows, colder water persists below the surface and thermoclines can form, so deeper areas remain much colder than surface measurements imply.
Swimming is generally possible in designated recreation areas at Anderson Ranch Reservoir, but activity is constrained by safety and management considerations. Cold water temperatures, especially early and late in the season or near cold outflows, can cause cold shock and hypothermia; boat traffic, steep drop-offs, and variable currents around the dam and inlets also create hazards. For these reasons visitors are advised to swim only in marked, supervised spots when available, wear flotation if venturing farther from shore, and heed posted regulations and watercraft patterns to reduce risk.