Lake Bonaparte — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Bonaparte, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Bonaparte today is 17.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 | 15.8°C | 17.4°C | |
| JUN 4 | 15.8°C | 17.4°C | |
| JUN 5 | 16.1°C | 17.4°C | |
| JUN 6 | 16.3°C | 17.4°C | |
| JUN 7 | 16.8°C | 17.4°C | |
| JUN 8 | 16.9°C | 17.4°C | |
| JUN 10 | 17.4°C | 17.4°C | |
| JUN 11 | 17.4°C | 17.4°C | |
| JUN 12 | 17.4°C | 17.4°C | |
| JUN 13 | 17.4°C | 17.4°C | |
| JUN 14 | 17.4°C | 17.4°C | |
| JUN 15 | 17.4°C | 17.4°C | |
| JUN 16 | 17.4°C | 17.4°C | |
| JUN 17 | 17.4°C | 17.4°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 | 1°C | 3°C | 6°C |
| April | 1°C | 7°C | 12°C |
| May | 8°C | 12°C | 16°C |
| June | 14°C | 17°C | 20°C |
| July | 20°C | 25°C | 29°C |
| August | 20°C | 23°C | 25°C |
| September | 16°C | 19°C | 22°C |
| October | 13°C | 15°C | 17°C |
| November | 5°C | 9°C | 13°C |
| December | 2°C | 5°C | 7°C |
Lake Bonaparte: Water Temperature by Location
Lake Bonaparte: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Lake Bonaparte's surface water temperatures follow a typical Upstate New York seasonal pattern. In winter the lake usually freezes or sits right at the freezing point, about 32°F (0°C), and open-water temperatures are generally just above freezing when ice is not present. Spring sees a steady rise, with surface readings commonly in the mid-30s to mid-50s °F (2–13°C) as air temperatures warm and ice melts. By summer, especially July and August, surface temperatures often reach the high 60s to mid-70s °F (20–24°C), and on warm sunny stretches can climb into the upper 70s °F (about 25°C). Fall brings a cooling trend, with late-season surface temperatures dropping from the 60s °F (around 15–18°C) down toward near-freezing again by late November.
Swimming in Lake Bonaparte is generally permitted because it is a recreational freshwater lake used by residents and visitors for boating and bathing, but opportunities depend on access and seasonal conditions. Most swimming is concentrated in the warm summer months when surface temperatures are comfortable; early- and late-season water can be uncomfortably cold and pose risks such as cold shock or hypothermia. In winter the lake is unsafe for swimming due to ice. Shoreline ownership, public access points, and local rules affect where and how people swim, and typical precautions—life jackets, awareness of water quality advisories, and no-swim conditions—should be observed.