Beltzville Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Beltzville Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Beltzville Lake today is 82°F.
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 |
|---|---|---|---|
| JUL 10 | 74°F | 82°F | |
| JUL 11 | 74°F | 82°F | |
| JUL 12 | 74°F | 82°F | |
| JUL 13 | 74°F | 82°F | |
| JUL 14 | 74°F | 82°F | |
| JUL 15 | 80°F | 82°F | |
| JUL 16 | 80°F | 82°F | |
| JUL 17 | 82°F | 82°F | |
| JUL 18 | 82°F | 82°F | |
| JUL 19 | 82°F | 82°F | |
| JUL 20 | 82°F | 82°F | |
| JUL 21 | 82°F | 82°F | |
| JUL 22 | 82°F | 82°F | |
| JUL 23 | 82°F | 82°F | |
| JUL 24 | 82°F | 82°F |
* 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 | 32°F | 39°F | 45°F |
| February | 32°F | 39°F | 45°F |
| March | 34°F | 40°F | 46°F |
| April | 43°F | 55°F | 68°F |
| May | 55°F | 64°F | 72°F |
| June | 61°F | 73°F | 86°F |
| July | 72°F | 82°F | 91°F |
| August | 72°F | 80°F | 88°F |
| September | 66°F | 72°F | 77°F |
| October | 54°F | 61°F | 68°F |
| November | 41°F | 47°F | 54°F |
| December | 34°F | 40°F | 45°F |
Beltzville Lake: Water Temperature by Location
Beltzville Lake: Weather Forecast
July 18
July 19
July 20
July 21
July 22
July 23
Location & Local Information
Beltzville Lake in eastern Pennsylvania experiences a wide seasonal swing in surface water temperatures. In winter the surface typically approaches near-freezing conditions, roughly 33–40°F (1–4°C). Spring sees a steady rise, often ranging from about 40–60°F (4–16°C) as the upper layers warm. During summer, surface temperatures are most comfortable for recreation, frequently between about 68–82°F (20–28°C) on warm afternoons, with shallow bays occasionally reaching the mid-80s°F (around 29°C). In fall the lake cools again to roughly 50–65°F (10–18°C). Deeper waters remain substantially cooler year-round; during summer the hypolimnion can stay in the 50s°F (10–15°C), so temperature varies with depth and location.
Swimming is allowed at Beltzville Lake in designated recreational areas because the reservoir is managed for multiple uses, including boating, fishing and beach swimming. Authorities limit swimming to marked zones to reduce conflicts with boat traffic, protect water quality and provide a safer environment for bathers. Open-water swimming outside those areas can be colder and riskier because of boat wakes, sudden depth changes, and colder deep water, so following posted rules and seasonal advisories improves safety.