Neversink Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Neversink Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Neversink Reservoir today is 19.6°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 |
|---|---|---|---|
| JUL 14 | 18.0°C | 22.0°C | |
| JUL 15 | 19.9°C | 22.0°C | |
| JUL 16 | 20.4°C | 22.0°C | |
| JUL 17 | 20.5°C | 22.0°C | |
| JUL 18 | 20.7°C | 22.0°C | |
| JUL 19 | 19.9°C | 22.0°C | |
| JUL 20 | 19.3°C | 22.0°C | |
| JUL 21 | 19.5°C | 22.0°C | |
| JUL 22 | 22.0°C | 19.7°C | |
| JUL 23 | 22.0°C | 19.8°C | |
| JUL 24 | 22.0°C | 20.0°C | |
| JUL 25 | 22.0°C | 20.1°C | |
| JUL 26 | 22.0°C | 20.2°C | |
| JUL 27 | 22.0°C | 20.3°C | |
| JUL 28 | 22.0°C | 20.4°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 | 5°C |
| February | 0°C | 1°C | 4°C |
| March | 0°C | 3°C | 6°C |
| April | 4°C | 8°C | 13°C |
| May | 9°C | 13°C | 16°C |
| June | 12°C | 17°C | 22°C |
| July | 14°C | 22°C | 30°C |
| August | 17°C | 23°C | 29°C |
| September | 15°C | 21°C | 27°C |
| October | 9°C | 13°C | 17°C |
| November | 4°C | 8°C | 12°C |
| December | 1°C | 4°C | 6°C |
Neversink Reservoir: Water Temperature by Location
Neversink Reservoir: Weather Forecast
July 22
July 23
July 24
July 25
July 26
Location & Local Information
Neversink Reservoir, part of New York City’s Catskill water supply system, typically shows a wide seasonal range in surface temperatures. In spring the surface often runs roughly 40–60°F (4–16°C) as the water warms; by summer surface readings commonly reach about 68–75°F (20–24°C) on warm days, though cool breezes and depth mean temperatures can be lower. Thermal stratification develops in summer, so deeper water can remain much colder — often in the 40–50°F (4–10°C) range — and in fall the surface cools back toward roughly 45–60°F (7–16°C). In winter the reservoir approaches freezing at the surface, around 32–39°F (0–4°C), and may ice over in sustained cold spells.
Swimming in Neversink Reservoir is not permitted because it is part of the municipal drinking-water supply and protections are intended to preserve water quality and public health. The New York City Department of Environmental Protection restricts direct-contact recreation in many watershed reservoirs to minimize contamination, and there are also safety concerns such as cold-water shock, sudden depth changes, and lack of lifeguard supervision. Visitors can appreciate the reservoir from designated shoreline areas and nearby trails, but organized swimming should be assumed prohibited.