Whitehall Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Whitehall Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Whitehall Reservoir today is 20.8°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 | 15.0°C | 20.0°C | |
| JUN 4 | 15.0°C | 20.0°C | |
| JUN 5 | 16.9°C | 20.0°C | |
| JUN 6 | 17.7°C | 20.0°C | |
| JUN 7 | 20.0°C | 20.0°C | |
| JUN 8 | 20.1°C | 20.0°C | |
| JUN 11 | 20.0°C | 20.8°C | |
| JUN 12 | 20.0°C | 20.7°C | |
| JUN 13 | 20.0°C | 20.7°C | |
| JUN 14 | 20.0°C | 20.6°C | |
| JUN 15 | 20.0°C | 20.6°C | |
| JUN 16 | 20.0°C | 20.6°C | |
| JUN 17 | 20.0°C | 20.5°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 | 1°C | 3°C | 6°C |
| February | 2°C | 6°C | 10°C |
| March | 3°C | 9°C | 14°C |
| April | 6°C | 12°C | 17°C |
| May | 11°C | 16°C | 21°C |
| June | 15°C | 20°C | 25°C |
| July | 21°C | 27°C | 32°C |
| August | 23°C | 26°C | 28°C |
| September | 19°C | 21°C | 24°C |
| October | 10°C | 15°C | 19°C |
| November | 5°C | 9°C | 13°C |
| December | 1°C | 3°C | 6°C |
Whitehall Reservoir: Water Temperature by Location
Whitehall Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
Location & Local Information
Whitehall Reservoir in Massachusetts experiences the full range of New England seasonal water temperatures. In winter the surface is typically near freezing, roughly 32–39°F (0–4°C), and portions of the reservoir often ice over. During spring and early summer the water warms gradually to about 40–60°F (4–16°C) as snowmelt and cool flows continue. By mid to late summer surface temperatures commonly reach the mid-60s to mid-70s Fahrenheit, about 18–24°C, with shallow bays or sun-exposed areas occasionally climbing into the upper 70s to low 80s°F (25–28°C). Even in summer, deeper water remains noticeably cooler—often in the 50s–60s°F (10–16°C)—because of thermal stratification. In autumn the surface cools back through the 50s and 40s°F (10–5°C) as the lake mixed and prepares to freeze.
Swimming in Whitehall Reservoir itself is generally not permitted because it functions as a drinking-water source and is managed for public water supply and watershed protection; prohibitions help protect water quality and reduce contamination risks, and they also address safety concerns such as steep drop-offs, cold deep water, and boat traffic. Local town or water authority rules determine allowed activities, and nearby recreational ponds or municipal beaches may provide designated swimming opportunities where public bathing is explicitly authorized.