South Twin Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in South Twin Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in South Twin Lake today is 21.7°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 | 22.7°C | 22.7°C | |
| AUG 25 | 22.8°C | 22.7°C | |
| AUG 26 | 23.0°C | 22.7°C | |
| AUG 27 | 22.2°C | 22.7°C | |
| AUG 28 | 22.2°C | 22.7°C | |
| AUG 29 | 22.2°C | 22.7°C | |
| AUG 30 | 22.2°C | 22.7°C | |
| AUG 31 | 21.8°C | 22.7°C | |
| SEP 1 | 20.6°C | 21.6°C | |
| SEP 2 | 20.6°C | 21.6°C | |
| SEP 3 | 20.6°C | 21.5°C | |
| SEP 4 | 20.6°C | 21.5°C | |
| SEP 5 | 20.6°C | 21.4°C | |
| SEP 6 | 20.6°C | 21.4°C | |
| SEP 7 | 20.6°C | 21.3°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 | 4°C | 7°C |
| February | 1°C | 3°C | 6°C |
| March | 1°C | 3°C | 6°C |
| April | 0°C | 2°C | 5°C |
| May | 1°C | 6°C | 12°C |
| June | 10°C | 14°C | 17°C |
| July | 17°C | 22°C | 26°C |
| August | 20°C | 23°C | 26°C |
| September | 18°C | 21°C | 23°C |
| October | 11°C | 15°C | 18°C |
| November | 4°C | 8°C | 11°C |
| December | 3°C | 7°C | 9°C |
South Twin Lake: Water Temperature by Location
South Twin Lake: Weather Forecast
September 1
September 2
September 3
September 4
September 5
Location & Local Information
South Twin Lake in northern Maine typically follows the seasonal temperature patterns common to inland New England lakes. In spring the surface usually ranges from about 36–55°F (2–13°C) as the water mixes and warms slowly. By summer, especially in July and August, surface temperatures commonly reach roughly 60–75°F (16–24°C) on warm afternoons, though deeper or shaded areas remain cooler. In early fall the lake cools to roughly 50–65°F (10–18°C) and by winter the surface is near freezing, often iced-over with temperatures close to 32–35°F (0–2°C) under the ice. Local factors such as depth, clarity, inflow from streams, and weather patterns cause variation from year to year.
Swimming at South Twin Lake is generally possible and popular during the warmer months where there is public or private access, because the lake is used for recreation rather than functioning as a restricted reservoir. That said, swimmers should be aware there are usually no lifeguards, water can be markedly colder below the surface or in early/late season, and private shorelines or conservation rules can limit access in places. Seasonal cold and sudden temperature changes also increase the risk of cold-water shock and hypothermia, so exercise caution and check local guidance before entering the water.