Little Sebago Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Little Sebago Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Little Sebago Lake today is 19°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 | 20.0°C | 24.0°C | |
| SEP 15 | 19.8°C | 24.0°C | |
| SEP 16 | 19.1°C | 24.0°C | |
| SEP 17 | 18.8°C | 24.0°C | |
| SEP 18 | 18.7°C | 24.0°C | |
| SEP 19 | 19.0°C | 24.0°C | |
| SEP 20 | 19.3°C | 24.0°C | |
| SEP 21 | 19.0°C | 24.0°C | |
| SEP 22 | 24.0°C | 19.3°C | |
| SEP 23 | 24.0°C | 19.5°C | |
| SEP 24 | 24.0°C | 19.8°C | |
| SEP 25 | 24.0°C | 20.0°C | |
| SEP 26 | 24.0°C | 20.3°C | |
| SEP 27 | 24.0°C | 20.5°C | |
| SEP 28 | 24.0°C | 20.8°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 | 3°C | 10°C | 17°C |
| February | 3°C | 9°C | 14°C |
| March | 2°C | 7°C | 11°C |
| April | 2°C | 6°C | 9°C |
| May | 6°C | 11°C | 17°C |
| June | 13°C | 22°C | 30°C |
| July | 19°C | 23°C | 27°C |
| August | 21°C | 25°C | 28°C |
| September | 20°C | 24°C | 28°C |
| October | 14°C | 19°C | 24°C |
| November | 6°C | 15°C | 22°C |
| December | 3°C | 8°C | 11°C |
Little Sebago Lake: Water Temperature by Location
Little Sebago Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Little Sebago Lake in Maine experiences a clear seasonal cycle in water temperature. In spring the surface typically rises from near freezing to about 40–60°F (4–16°C) as ice melts and the upper layers warm. Summer brings the warmest conditions, with common surface temperatures in the 68–78°F range (20–26°C) and occasional warm spells pushing toward 80°F (27°C) on hot days. Early autumn usually sees cooling to roughly 55–70°F (13–21°C) as air temperatures fall and the lake destratifies. In winter the lake often has ice cover and surface water sits at or just above 32°F (0°C), while deeper water approaches the density maximum near 39°F (4°C).
Swimming is permitted and is a popular recreational use of the lake during the ice‑free months because summer and early fall surface temperatures are generally comfortable for most swimmers. In practice, swimming is limited by seasonal ice and cold-water hazards: ice cover and near‑freezing temperatures in late fall through early spring make swimming unsafe or impractical. Access may be from public boat launches, shorelines, private camps, or designated beaches, and usual caution about cold shock, boat traffic, and local rules should be observed.