Shawnee Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Shawnee Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Shawnee Lake today is 26.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. 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 |
|---|---|---|---|
| AUG 4 | 26.2°C | 24.5°C | |
| AUG 5 | 26.0°C | 24.5°C | |
| AUG 6 | 26.3°C | 24.5°C | |
| AUG 7 | 26.3°C | 24.5°C | |
| AUG 8 | 26.5°C | 24.5°C | |
| AUG 9 | 26.8°C | 24.5°C | |
| AUG 10 | 27.2°C | 24.5°C | |
| AUG 11 | 27.3°C | 24.5°C | |
| AUG 12 | 24.5°C | 26.4°C | |
| AUG 13 | 24.5°C | 26.3°C | |
| AUG 14 | 24.5°C | 26.2°C | |
| AUG 15 | 24.5°C | 26.1°C | |
| AUG 16 | 24.5°C | 26.0°C | |
| AUG 17 | 24.5°C | 25.9°C | |
| AUG 18 | 24.5°C | 25.8°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 | 1°C | 4°C | 6°C |
| February | 1°C | 4°C | 7°C |
| March | 1°C | 6°C | 11°C |
| April | 6°C | 11°C | 15°C |
| May | 12°C | 18°C | 22°C |
| June | 17°C | 21°C | 24°C |
| July | 21°C | 25°C | 27°C |
| August | 20°C | 25°C | 29°C |
| September | 19°C | 22°C | 25°C |
| October | 13°C | 16°C | 19°C |
| November | 6°C | 12°C | 17°C |
| December | 2°C | 5°C | 8°C |
Shawnee Lake: Water Temperature by Location
Shawnee Lake: Weather Forecast
August 12
August 13
August 14
August 15
August 16
Location & Local Information
Shawnee Lake in Pennsylvania experiences the seasonal temperature swings typical of small inland reservoirs in the region. Surface water in winter often approaches near‑freezing conditions, roughly 32–40°F (0–4°C), while spring brings a steady rise into the 45–65°F (7–18°C) range as the lake mixes and warms. Peak summer surface temperatures commonly reach about 70–80°F (21–27°C), and occasionally into the low 80s°F (28–29°C) during heat waves. By autumn the surface cools back to roughly 50–65°F (10–18°C) as stratification breaks down and the lake returns toward winter temperatures. Deeper water remains substantially colder year‑round because of thermal stratification, so actual experience of temperature can vary with depth and location on the lake.
Swimming opportunities at Shawnee Lake depend on local management and season; where public access and designated swim areas are provided, swimming is typically allowed during the warm months when lifeguards or clear signage indicate it is safe. Restrictions may be in place in other areas because of private ownership, water quality considerations, protection of habitat, or safety hazards such as steep drop‑offs and underwater structure. Visitors should follow posted rules, check local advisories for water quality, and be mindful that even in summer, sudden cold pockets at depth can pose risks.