Long Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Long Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Long Lake today is 21.2°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 |
|---|---|---|---|
| AUG 4 | 20.7°C | 22.8°C | |
| AUG 5 | 20.6°C | 22.8°C | |
| AUG 6 | 20.8°C | 22.8°C | |
| AUG 7 | 21.3°C | 22.8°C | |
| AUG 8 | 21.2°C | 22.8°C | |
| AUG 9 | 21.1°C | 22.8°C | |
| AUG 10 | 21.1°C | 22.8°C | |
| AUG 11 | 21.1°C | 22.8°C | |
| AUG 12 | 22.8°C | 21.3°C | |
| AUG 13 | 22.8°C | 21.4°C | |
| AUG 14 | 22.8°C | 21.4°C | |
| AUG 15 | 22.8°C | 21.5°C | |
| AUG 16 | 22.8°C | 21.6°C | |
| AUG 17 | 22.8°C | 21.7°C | |
| AUG 18 | 22.8°C | 21.8°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 | 0°C | 2°C | 5°C |
| March | 0°C | 3°C | 6°C |
| April | 0°C | 6°C | 12°C |
| May | 7°C | 12°C | 16°C |
| June | 12°C | 16°C | 20°C |
| July | 18°C | 24°C | 29°C |
| August | 20°C | 23°C | 25°C |
| September | 16°C | 19°C | 22°C |
| October | 11°C | 14°C | 17°C |
| November | 4°C | 9°C | 13°C |
| December | 1°C | 5°C | 7°C |
Long Lake: Water Temperature by Location
Long Lake: Weather Forecast
August 12
August 13
August 14
August 15
August 16
Location & Local Information
Long Lake in the Town of Long Lake, New York, typically experiences a wide seasonal range in surface water temperatures. In summer months (July–August) surface temperatures commonly rise into the mid‑60s to mid‑70s °F (about 18–24 °C), occasionally reaching the upper 70s °F (around 25 °C) on very warm spells. Spring and fall bring much cooler conditions, with surface water often in the 40s to low 60s °F (about 4–17 °C) as the lake stratifies and mixes. Winter temperatures drop to near freezing at the surface under ice cover, roughly 32–39 °F (0–4 °C) close to the ice, while deeper water remains slightly warmer but still cold compared with summer values.
Swimming is generally possible during the ice‑free season and people commonly swim from shorelines, campsites, and informal beaches, but availability and safety depend on local conditions and any posted advisories. There are no guarantees of lifeguards, and water clarity, currents near inlets/outlets, sudden depth changes, and cold‑water shock in shoulder seasons are considerations. In winter the lake is ice‑covered and routine swimming is not practical; any intentional cold‑water or ice swimming carries significant risks and should only be undertaken with proper experience, safety measures, and local guidance.