Clarence J Brown Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Clarence J Brown Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Clarence J Brown Reservoir today is 20.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 3 | 17.0°C | 21.1°C | |
| JUN 4 | 18.0°C | 21.1°C | |
| JUN 5 | 18.2°C | 21.1°C | |
| JUN 6 | 18.5°C | 21.1°C | |
| JUN 7 | 19.4°C | 21.1°C | |
| JUN 8 | 19.3°C | 21.1°C | |
| JUN 10 | 20.3°C | 21.1°C | |
| JUN 11 | 21.1°C | 20.5°C | |
| JUN 12 | 21.1°C | 20.6°C | |
| JUN 13 | 21.1°C | 20.6°C | |
| JUN 14 | 21.1°C | 20.6°C | |
| JUN 15 | 21.1°C | 20.7°C | |
| JUN 16 | 21.1°C | 20.7°C | |
| JUN 17 | 21.1°C | 20.7°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 | 0°C | 3°C | 6°C |
| February | 0°C | 3°C | 6°C |
| March | 2°C | 7°C | 13°C |
| April | 4°C | 11°C | 19°C |
| May | 13°C | 17°C | 20°C |
| June | 17°C | 21°C | 25°C |
| July | 22°C | 24°C | 27°C |
| August | 23°C | 26°C | 29°C |
| September | 20°C | 25°C | 30°C |
| October | 16°C | 21°C | 25°C |
| November | 5°C | 11°C | 16°C |
| December | 2°C | 6°C | 10°C |
Clarence J Brown Reservoir: Water Temperature by Location
Clarence J Brown Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
Location & Local Information
Clarence J. Brown Reservoir’s surface water temperatures change with the seasons and with depth and local weather. In winter the surface commonly sits near freezing to the low 40s Fahrenheit (about 0–7°C). Spring warming tends to raise surface readings into the mid-40s to mid-60s °F (roughly 7–18°C) as air temperatures moderate and inflows warm. Summer is when the reservoir is warmest, with typical surface temperatures in the 70–85°F range (about 21–29°C) and occasional brief peaks into the upper 80s (around 31°C) during heat waves; deeper water remains noticeably cooler. By autumn the lake cools again, with surface temperatures often falling into the 50–68°F band (10–20°C) as the season progresses.
Recreational swimming is possible during the warmer months, but it is usually limited to managed or posted recreation areas and is often “swim at your own risk” rather than supervised by lifeguards. Because the reservoir is used for multiple purposes, local authorities may post advisories or restrictions for safety or water-quality reasons (for example, algal blooms, high boat traffic, sudden level changes, or submerged hazards). Winter swimming is inadvisable because of cold-shock and ice hazards. Visitors should check current local notices and follow posted rules before entering the water.