Messalonskee Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Messalonskee Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Messalonskee Lake today is 18.1°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 |
|---|---|---|---|
| SEP 14 | 19.5°C | 23.0°C | |
| SEP 15 | 18.7°C | 23.0°C | |
| SEP 16 | 18.7°C | 23.0°C | |
| SEP 17 | 18.4°C | 23.0°C | |
| SEP 18 | 19.0°C | 23.0°C | |
| SEP 19 | 18.9°C | 23.0°C | |
| SEP 20 | 18.6°C | 23.0°C | |
| SEP 21 | 18.1°C | 23.0°C | |
| SEP 22 | 23.0°C | 18.3°C | |
| SEP 23 | 23.0°C | 18.6°C | |
| SEP 24 | 23.0°C | 18.8°C | |
| SEP 25 | 23.0°C | 19.1°C | |
| SEP 26 | 23.0°C | 19.3°C | |
| SEP 27 | 23.0°C | 19.6°C | |
| SEP 28 | 23.0°C | 19.8°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 | 0°C | 2°C | 5°C |
| February | 0°C | 2°C | 4°C |
| March | 0°C | 2°C | 5°C |
| April | 0°C | 3°C | 7°C |
| May | 5°C | 10°C | 15°C |
| June | 10°C | 15°C | 19°C |
| July | 19°C | 23°C | 26°C |
| August | 21°C | 25°C | 28°C |
| September | 19°C | 23°C | 27°C |
| October | 13°C | 16°C | 19°C |
| November | 3°C | 8°C | 13°C |
| December | 1°C | 5°C | 8°C |
Messalonskee Lake: Water Temperature by Location
Messalonskee Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Messalonskee Lake experiences a pronounced seasonal cycle in surface water temperature. In winter the lake commonly sits near freezing, around 32–39°F (0–4°C) when ice is present. As spring warms, surface temperatures rise to roughly 40–60°F (4–16°C), and by early summer they often reach 60–70°F (16–21°C). Peak summer conditions typically yield surface temperatures in the upper 60s to mid‑70s Fahrenheit, about 20–24°C, though shallower bays can warm a few degrees higher on hot, calm days. In fall the surface cools again into the 50–65°F range (10–18°C). Deeper water remains noticeably cooler year‑round because of thermal stratification, so temperatures you experience while swimming depend on depth and location.
Swimming in Messalonskee Lake is commonly practiced during the warm months at public access points and private shoreline properties because summer surface temperatures are generally comfortable for recreational bathing. However, local rules, posted advisories and water‑quality notices can affect whether particular areas are recommended for swimming; algae blooms, boat traffic, underwater hazards and the absence of lifeguards are reasons some spots may be unsuitable. Ice swimming in winter is possible only where conditions are safe and permitted, but the near‑freezing temperatures and thin ice make that activity risky without proper precautions.