Lake George — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake George, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake George today is 19.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| SEP 13 | 20.3°C | 19.4°C | |
| SEP 14 | 19.1°C | 19.4°C | |
| SEP 15 | 19.8°C | 19.4°C | |
| SEP 16 | 19.4°C | 19.4°C | |
| SEP 17 | 18.3°C | 19.4°C | |
| SEP 18 | 18.3°C | 19.4°C | |
| SEP 19 | 19.0°C | 19.4°C | |
| SEP 20 | 19.4°C | 19.4°C | |
| SEP 21 | 19.4°C | 19.2°C | |
| SEP 22 | 19.4°C | 19.2°C | |
| SEP 23 | 19.4°C | 19.2°C | |
| SEP 24 | 19.4°C | 19.2°C | |
| SEP 25 | 19.4°C | 19.3°C | |
| SEP 26 | 19.4°C | 19.3°C | |
| SEP 27 | 19.4°C | 19.3°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 | 2°C | 7°C | 12°C |
| May | 9°C | 13°C | 16°C |
| June | 13°C | 18°C | 22°C |
| July | 19°C | 24°C | 29°C |
| August | 20°C | 23°C | 26°C |
| September | 15°C | 19°C | 24°C |
| October | 11°C | 14°C | 17°C |
| November | 4°C | 9°C | 13°C |
| December | 1°C | 5°C | 7°C |
Lake George: Water Temperature by Location
Lake George: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Lake George’s water temperatures vary substantially through the year because the long, deep lake responds slowly to seasonal changes. In summer months (June–August) surface waters typically range from about 68–75°F (20–24°C), with shallow bays sometimes warming into the upper 70s (around 25–26°C) on hot spells. Spring (April–May) sees cooler conditions, roughly 40–60°F (4–15°C) as the lake stratifies, while fall (September–November) brings a gradual cooling to roughly 50–65°F (10–18°C). In winter the surface freezes in most years and the water beneath ice is close to freshwater maximum density, generally about 32–39°F (0–4°C), with ice thickness and exact temperatures varying by year and location.
Swimming in Lake George is permitted and common, especially at public beaches, state park areas and private camps along the shore. The lake’s generally good water quality and designated swimming areas make it suitable for recreational use, but considerations of safety and seasonality are important: cold spring or late‑season water can cause cold‑water shock or hypothermia, boat traffic and deeper drop‑offs create hazards, and some spots are privately owned or subject to local rules that limit access. Lifeguard presence, facilities and water conditions vary by site, so swimmers should choose monitored beaches in peak season and follow local guidance.