Conesus Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Conesus Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Conesus Lake today is 19.8°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 |
|---|---|---|---|
| JUN 2 | 16.7°C | 19.5°C | |
| JUN 3 | 17.1°C | 19.5°C | |
| JUN 4 | 17.3°C | 19.5°C | |
| JUN 5 | 18.0°C | 19.5°C | |
| JUN 6 | 18.4°C | 19.5°C | |
| JUN 7 | 18.1°C | 19.5°C | |
| JUN 8 | 18.1°C | 19.5°C | |
| JUN 10 | 19.5°C | 19.8°C | |
| JUN 11 | 19.5°C | 19.8°C | |
| JUN 12 | 19.5°C | 19.8°C | |
| JUN 13 | 19.5°C | 19.7°C | |
| JUN 14 | 19.5°C | 19.7°C | |
| JUN 15 | 19.5°C | 19.7°C | |
| JUN 16 | 19.5°C | 19.7°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 | 4°C | 6°C |
| February | 0°C | 4°C | 7°C |
| March | 0°C | 4°C | 7°C |
| April | 3°C | 9°C | 14°C |
| May | 8°C | 15°C | 22°C |
| June | 15°C | 20°C | 24°C |
| July | 22°C | 25°C | 27°C |
| August | 21°C | 25°C | 29°C |
| September | 18°C | 22°C | 25°C |
| October | 13°C | 16°C | 18°C |
| November | 4°C | 10°C | 15°C |
| December | 0°C | 5°C | 8°C |
Conesus Lake: Water Temperature by Location
Conesus Lake: Weather Forecast
June 9
June 10
June 11
June 12
Location & Local Information
Conesus Lake, one of New York’s Finger Lakes, experiences a wide seasonal range in water temperature. Surface temperatures in late spring and early summer commonly sit around the mid-50s to mid-60s °F (13–18 °C). In the warmest part of summer, surface readings often rise into the low 70s to around 80 °F (21–27 °C), and brief heat waves can push surface spots a few degrees higher. By early fall temperatures generally fall back into the 50s and 60s °F (10–20 °C). In winter the lake approaches freezing, with surface temperatures around 32–40 °F (0–4 °C) where ice forms. Because Conesus Lake stratifies in summer, deeper water below the thermocline remains substantially colder than surface values.
Swimming in Conesus Lake is commonly permitted and practiced from both public and private shorelines during the warmer months, and some beaches may have seasonal lifeguard coverage. However, local health authorities sometimes issue advisories or temporary closures due to water-quality concerns such as harmful algal blooms, elevated bacteria, or storm-related runoff, so conditions can change. Swimmers should also be aware that even in summer the lake can be chilly below the surface, creating cold-shock or hypothermia risks, and should follow posted guidance and use caution when entering open water.