Lake Wentworth — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Wentworth, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Wentworth today is 21.2°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 |
|---|---|---|---|
| JUN 23 | 20.0°C | 17.6°C | |
| JUN 24 | 20.1°C | 17.6°C | |
| JUN 25 | 20.4°C | 17.6°C | |
| JUN 26 | 20.4°C | 17.6°C | |
| JUN 27 | 20.5°C | 17.6°C | |
| JUN 28 | 20.6°C | 17.6°C | |
| JUN 29 | 20.6°C | 17.6°C | |
| JUN 30 | 20.6°C | 17.6°C | |
| JUL 1 | 25.5°C | 21.4°C | |
| JUL 2 | 25.5°C | 21.6°C | |
| JUL 3 | 25.5°C | 21.8°C | |
| JUL 4 | 25.5°C | 22.1°C | |
| JUL 5 | 25.5°C | 22.3°C | |
| JUL 6 | 25.5°C | 22.5°C | |
| JUL 7 | 25.5°C | 22.7°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 | 2°C | 9°C | 15°C |
| February | 2°C | 8°C | 13°C |
| March | 4°C | 9°C | 14°C |
| April | 3°C | 10°C | 16°C |
| May | 8°C | 14°C | 19°C |
| June | 14°C | 18°C | 22°C |
| July | 20°C | 26°C | 31°C |
| August | 21°C | 23°C | 26°C |
| September | 19°C | 22°C | 24°C |
| October | 13°C | 16°C | 19°C |
| November | 5°C | 9°C | 13°C |
| December | 2°C | 5°C | 7°C |
Lake Wentworth: Water Temperature by Location
Lake Wentworth: Weather Forecast
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July 6
Location & Local Information
Lake Wentworth, in eastern New Hampshire, experiences typical New England seasonal shifts in water temperature. In summer the surface commonly warms to the mid-60s to mid-70s °F (about 18–24 °C), with the warmest weeks sometimes pushing temperatures slightly higher near shore. Spring and fall see a broader window, roughly 40–60 °F (4–15 °C), as the lake cools after winter or slowly gains heat before summer. In winter the lake is often at or just above freezing at the surface, roughly 32–36 °F (0–2 °C) when ice forms; deeper layers remain colder and stratification means temperatures vary significantly with depth.
Swimming is permitted and commonly practiced in the warmer months because public beaches and many private shorelines provide recreational access and summer surface temperatures frequently reach comfortable ranges for bathing. Recreational use depends on local water-quality monitoring and occasional advisories for algal blooms or bacteria, so checking current notices is sensible. Early- and late-season swimming carries cold-water risks such as cold shock and reduced endurance, and winter conditions generally make regular swimming impractical except for organized ice-swimming with proper safety measures.