Hemlock Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Hemlock Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Hemlock Lake today is 20.1°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 23 | 19.3°C | 18.5°C | |
| JUN 24 | 19.2°C | 18.5°C | |
| JUN 25 | 19.3°C | 18.5°C | |
| JUN 26 | 19.3°C | 18.5°C | |
| JUN 27 | 19.4°C | 18.5°C | |
| JUN 28 | 19.4°C | 18.5°C | |
| JUN 29 | 20.0°C | 18.5°C | |
| JUN 30 | 20.1°C | 18.5°C | |
| JUL 1 | 24.0°C | 20.3°C | |
| JUL 2 | 24.0°C | 20.5°C | |
| JUL 3 | 24.0°C | 20.7°C | |
| JUL 4 | 24.0°C | 20.9°C | |
| JUL 5 | 24.0°C | 21.1°C | |
| JUL 6 | 24.0°C | 21.3°C | |
| JUL 7 | 24.0°C | 21.5°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 | 3°C | 6°C |
| February | 0°C | 4°C | 7°C |
| March | 0°C | 3°C | 6°C |
| April | 3°C | 9°C | 14°C |
| May | 8°C | 15°C | 22°C |
| June | 13°C | 19°C | 24°C |
| July | 21°C | 24°C | 27°C |
| August | 21°C | 25°C | 29°C |
| September | 17°C | 21°C | 25°C |
| October | 13°C | 16°C | 18°C |
| November | 4°C | 10°C | 14°C |
| December | 0°C | 5°C | 8°C |
Hemlock Lake: Water Temperature by Location
Hemlock Lake: Weather Forecast
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July 4
July 5
Location & Local Information
Hemlock Lake, one of the Finger Lakes in upstate New York, tends to be cool year-round because it is relatively deep and oligotrophic. Typical surface temperatures run from near freezing in winter — around 32°F (0°C) with ice cover common — to roughly 40–55°F (4–13°C) in spring as the lake thaws. In mid to late summer the surface often warms to about 60–75°F (16–24°C), occasionally reaching the high 70s°F (around 25–26°C) during heat spells; however, deeper water stays much colder, often in the 40s°F (4–9°C) even in summer. During fall the surface cools back into the mid-40s to low 60s°F (7–16°C) as the lake mixes and temperatures decline.
Swimming in Hemlock Lake is generally not permitted because the lake is managed as a municipal water supply and is subject to protections intended to preserve water quality and reduce contamination risks. Restrictions are intended to limit direct-contact recreation and motorized use that could affect the watershed; as a result, traditional public swimming opportunities are not available at the lake, and visitors should follow posted rules and local management guidance for permitted activities.