Lake Welch — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Welch, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Welch today is 20.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 14 | 21.2°C | 23.5°C | |
| SEP 15 | 21.5°C | 23.5°C | |
| SEP 16 | 21.9°C | 23.5°C | |
| SEP 17 | 19.9°C | 23.5°C | |
| SEP 18 | 19.6°C | 23.5°C | |
| SEP 19 | 19.8°C | 23.5°C | |
| SEP 20 | 21.1°C | 23.5°C | |
| SEP 21 | 20.7°C | 23.5°C | |
| SEP 22 | 23.5°C | 20.8°C | |
| SEP 23 | 23.5°C | 21.0°C | |
| SEP 24 | 23.5°C | 21.1°C | |
| SEP 25 | 23.5°C | 21.3°C | |
| SEP 26 | 23.5°C | 21.4°C | |
| SEP 27 | 23.5°C | 21.5°C | |
| SEP 28 | 23.5°C | 21.7°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 | 2°C | 5°C |
| February | 0°C | 1°C | 4°C |
| March | 0°C | 4°C | 7°C |
| April | 2°C | 9°C | 15°C |
| May | 11°C | 15°C | 19°C |
| June | 17°C | 20°C | 24°C |
| July | 21°C | 26°C | 30°C |
| August | 22°C | 26°C | 29°C |
| September | 20°C | 24°C | 27°C |
| October | 11°C | 16°C | 20°C |
| November | 5°C | 9°C | 12°C |
| December | 0°C | 3°C | 6°C |
Lake Welch: Water Temperature by Location
Lake Welch: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Lake Welch, located in New York’s Harriman State Park, experiences a wide range of surface temperatures through the year. In winter months the water can approach freezing, commonly around 32–40°F (0–4°C) with ice formation possible during cold spells. Spring brings a steady rise, with surface temperatures typically in the 45–65°F (7–18°C) range as air temperatures warm and runoff mixes into the lake. By early to mid-summer the water often reaches its warmest, frequently between 70–80°F (21–27°C) on sunny days, especially in July and August, before cooling again into the 60–70°F (15–21°C) band in autumn as the season progresses.
Swimming at Lake Welch is allowed but primarily concentrated at the designated Lake Welch Beach area during the staffed swimming season. The beach is maintained for recreational swimming because lifeguards are present, water quality is monitored periodically, and facilities are provided for visitors. Outside the designated swim area, swimming is generally discouraged due to lack of supervision, potential boat traffic, and variable depths or underwater hazards. Visitors should follow posted rules and seasonal advisories, since access and safety measures can change with weather, staffing, and water-condition assessments.