Waller Mill Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Waller Mill Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Waller Mill Reservoir today is 29.5°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 | 26.5°C | 28.5°C | |
| JUL 15 | 28.4°C | 28.5°C | |
| JUL 16 | 28.4°C | 28.5°C | |
| JUL 17 | 28.5°C | 28.5°C | |
| JUL 18 | 28.6°C | 28.5°C | |
| JUL 19 | 28.7°C | 28.5°C | |
| JUL 20 | 28.8°C | 28.5°C | |
| JUL 21 | 29.1°C | 28.5°C | |
| JUL 22 | 28.5°C | 29.5°C | |
| JUL 23 | 28.5°C | 29.4°C | |
| JUL 24 | 28.5°C | 29.4°C | |
| JUL 25 | 28.5°C | 29.3°C | |
| JUL 26 | 28.5°C | 29.3°C | |
| JUL 27 | 28.5°C | 29.2°C | |
| JUL 28 | 28.5°C | 29.2°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 | 2°C | 6°C | 9°C |
| February | 1°C | 3°C | 6°C |
| March | 6°C | 10°C | 14°C |
| April | 5°C | 14°C | 23°C |
| May | 14°C | 20°C | 26°C |
| June | 18°C | 22°C | 26°C |
| July | 24°C | 29°C | 32°C |
| August | 23°C | 27°C | 31°C |
| September | 22°C | 26°C | 29°C |
| October | 16°C | 19°C | 22°C |
| November | 6°C | 11°C | 16°C |
| December | 3°C | 6°C | 10°C |
Waller Mill Reservoir: Water Temperature by Location
Waller Mill Reservoir: Weather Forecast
July 22
July 23
July 24
July 25
July 26
Location & Local Information
Waller Mill Reservoir in Virginia typically shows noticeable seasonal variation in surface temperature. In winter months water often sits around the mid-30s to mid-40s °F (about 2 to 7 °C), while spring sees a gradual rise into the mid-40s to mid-60s °F (roughly 7 to 18 °C) as air temperatures warm. Summer surface temperatures commonly range from the low 70s up into the high 70s or low 80s °F (about 21 to 27 °C), and can occasionally reach the mid-80s °F (near 29 °C) during heat spells. In autumn the water cools again, moving from the 60s down into the 50s °F (approximately 16 to 10 °C) as the season progresses. These are typical surface ranges and can vary with weather, wind, depth, and time of day.
Swimming at Waller Mill Reservoir is not permitted under park rules, primarily for safety and resource-management reasons. The area lacks designated swimming beaches and lifeguards, and reservoirs often present hidden underwater hazards, variable currents, and fluctuating water quality that make unsupervised swimming risky. The park instead supports activities like boating and fishing in designated areas where safety measures and use restrictions are in place. Visitors who want to swim are generally advised to use public pools or beaches that are specifically managed for swimming.