Great Moose Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Great Moose Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Great Moose Lake today is 21.4°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 |
|---|---|---|---|
| AUG 24 | 24.2°C | 23.8°C | |
| AUG 25 | 24.3°C | 23.8°C | |
| AUG 26 | 24.8°C | 23.8°C | |
| AUG 27 | 21.6°C | 23.8°C | |
| AUG 28 | 21.6°C | 23.8°C | |
| AUG 29 | 21.6°C | 23.8°C | |
| AUG 30 | 21.6°C | 23.8°C | |
| AUG 31 | 21.5°C | 23.8°C | |
| SEP 1 | 20.6°C | 21.4°C | |
| SEP 2 | 20.6°C | 21.3°C | |
| SEP 3 | 20.6°C | 21.3°C | |
| SEP 4 | 20.6°C | 21.2°C | |
| SEP 5 | 20.6°C | 21.2°C | |
| SEP 6 | 20.6°C | 21.2°C | |
| SEP 7 | 20.6°C | 21.1°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 | 4°C |
| February | 0°C | 2°C | 4°C |
| March | 0°C | 2°C | 4°C |
| April | 0°C | 4°C | 8°C |
| May | 6°C | 10°C | 13°C |
| June | 10°C | 15°C | 19°C |
| July | 18°C | 22°C | 27°C |
| August | 21°C | 24°C | 27°C |
| September | 18°C | 21°C | 23°C |
| October | 12°C | 16°C | 19°C |
| November | 3°C | 8°C | 13°C |
| December | 0°C | 2°C | 5°C |
Great Moose Lake: Water Temperature by Location
Great Moose Lake: Weather Forecast
September 1
September 2
September 3
September 4
September 5
Location & Local Information
Great Moose Lake in northern Maine typically follows the seasonal temperature pattern common to glacially formed lakes in the region. In winter the surface usually sits at or near the freezing point, around 32°F (0°C), and the lake commonly freezes over for several months. As spring arrives surface temperatures climb through the 33–55°F (1–13°C) range as snowmelt and cooler air persist. Peak summer surface temperatures are generally reached in July and August, often ranging from about 65–75°F (18–24°C) on warm, calm days; shallower bays can warm a few degrees higher while deeper basins remain cooler. By autumn the surface cools back toward the 45–60°F (7–16°C) band before ice-up resumes.
Swimming in Great Moose Lake is generally allowed and is most practical during the warmest weeks of July and August when water temperatures are comfortable for recreational bathing. Because the lake is in a relatively remote, natural setting, formal public beaches and lifeguards are limited or absent, so swimmers should exercise usual precautions: check local access points, be mindful of changing conditions, and watch for cold water in deeper areas or shaded coves. Winter swimming is uncommon except for organized, experienced ice swimmers due to the hazards of thin ice and near-freezing water.