Pepacton Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Pepacton Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Pepacton Reservoir 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 |
|---|---|---|---|
| JUN 3 | 15.2°C | 18.0°C | |
| JUN 4 | 15.5°C | 18.0°C | |
| JUN 5 | 16.1°C | 18.0°C | |
| JUN 6 | 17.3°C | 18.0°C | |
| JUN 7 | 17.8°C | 18.0°C | |
| JUN 8 | 18.0°C | 18.0°C | |
| JUN 10 | 19.2°C | 18.0°C | |
| JUN 11 | 18.0°C | 19.1°C | |
| JUN 12 | 18.0°C | 19.1°C | |
| JUN 13 | 18.0°C | 19.0°C | |
| JUN 14 | 18.0°C | 19.0°C | |
| JUN 15 | 18.0°C | 18.9°C | |
| JUN 16 | 18.0°C | 18.8°C | |
| JUN 17 | 18.0°C | 18.8°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 | 5°C |
| February | 0°C | 1°C | 4°C |
| March | 0°C | 3°C | 7°C |
| April | 4°C | 8°C | 13°C |
| May | 9°C | 13°C | 18°C |
| June | 14°C | 18°C | 22°C |
| July | 18°C | 24°C | 30°C |
| August | 18°C | 24°C | 29°C |
| September | 16°C | 22°C | 27°C |
| October | 9°C | 13°C | 17°C |
| November | 5°C | 9°C | 12°C |
| December | 0°C | 4°C | 6°C |
Pepacton Reservoir: Water Temperature by Location
Pepacton Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
Location & Local Information
Pepacton Reservoir in the Catskills is a deep, clear drinking-water impoundment whose temperatures vary with season and depth. In spring the surface typically ranges from about 40–55°F (4–13°C) as snowmelt and cool air keep waters cold; by summer the surface often warms to roughly 60–75°F (15–24°C) on warm days, while deeper layers remain much cooler, frequently holding near 40–50°F (4–10°C) because of thermal stratification. In autumn surface temperatures usually fall back through the 50–60°F (10–16°C) range as air cools, and in winter the reservoir approaches freezing at the surface—around 32°F (0°C) when ice forms—while deeper water stays above freezing but cold.
Swimming in Pepacton Reservoir is not permitted because it is part of New York City’s upstate water supply system and is managed to protect water quality and public health. Restrictions are enforced to minimize contamination risks, limit shoreline disturbance, and reduce safety hazards associated with cold, deep water and limited access for rescue. Recreational activities such as certain fishing and regulated boating may be allowed under local rules and permits, but entering the water for swimming is prohibited to ensure the integrity of the drinking-water source.