Maranacook Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Maranacook Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Maranacook Lake today is 18.5°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 |
|---|---|---|---|
| JUN 3 | 12.0°C | 16.0°C | |
| JUN 4 | 12.3°C | 16.0°C | |
| JUN 5 | 12.9°C | 16.0°C | |
| JUN 6 | 13.4°C | 16.0°C | |
| JUN 7 | 18.0°C | 16.0°C | |
| JUN 8 | 18.0°C | 16.0°C | |
| JUN 10 | 18.5°C | 16.0°C | |
| JUN 11 | 16.0°C | 18.4°C | |
| JUN 12 | 16.0°C | 18.3°C | |
| JUN 13 | 16.0°C | 18.1°C | |
| JUN 14 | 16.0°C | 18.0°C | |
| JUN 15 | 16.0°C | 17.9°C | |
| JUN 16 | 16.0°C | 17.8°C | |
| JUN 17 | 16.0°C | 17.6°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 | 3°C | 6°C |
| February | 0°C | 3°C | 5°C |
| March | 0°C | 3°C | 5°C |
| April | 0°C | 4°C | 8°C |
| May | 6°C | 10°C | 15°C |
| June | 12°C | 16°C | 20°C |
| July | 20°C | 25°C | 30°C |
| August | 23°C | 26°C | 28°C |
| September | 21°C | 23°C | 26°C |
| October | 13°C | 18°C | 22°C |
| November | 4°C | 9°C | 14°C |
| December | 1°C | 4°C | 6°C |
Maranacook Lake: Water Temperature by Location
Maranacook Lake: Weather Forecast
June 9
June 10
June 11
June 12
Location & Local Information
Maranacook Lake in central Maine follows a familiar seasonal pattern for northern temperate lakes. Surface temperatures in summer typically rise into the upper 60s to mid-70s °F (about 20–24 °C), with shallow bays sometimes getting a few degrees warmer on hot, calm days. By late spring the lake commonly measures in the mid-40s to mid-50s °F (7–13 °C) as it stratifies, and in autumn surface readings fall back through the 50s to 40s °F (10–7 °C) during cooling. In winter the lake is at or near freezing at the surface (32 °F, 0 °C) where ice forms; deeper water remains colder but above freezing. Deeper parts of Maranacook can stay noticeably cooler than the surface throughout the year.
Swimming is generally allowed at Maranacook Lake because it is a recreational freshwater body with public access and shoreline use, but visitors should take routine precautions. Local water-quality monitoring occasionally issues advisories, and warm summer conditions can produce localized algal blooms, so checking current conditions is wise. Cold-water shock can be a hazard in spring and late fall, and ice cover in winter makes swimming unsafe. Lifeguards are not typically present, so swimmers should be cautious about boat traffic, weather changes, and consistent supervision for children.