Branch Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Branch Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Branch Lake today is 17.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 23 | 16.5°C | 14.0°C | |
| JUN 24 | 17.3°C | 14.0°C | |
| JUN 25 | 17.3°C | 14.0°C | |
| JUN 26 | 17.4°C | 14.0°C | |
| JUN 27 | 17.4°C | 14.0°C | |
| JUN 28 | 17.5°C | 14.0°C | |
| JUN 29 | 17.6°C | 14.0°C | |
| JUN 30 | 17.6°C | 14.0°C | |
| JUL 1 | 21.5°C | 17.6°C | |
| JUL 2 | 21.5°C | 17.8°C | |
| JUL 3 | 21.5°C | 18.0°C | |
| JUL 4 | 21.5°C | 18.2°C | |
| JUL 5 | 21.5°C | 18.4°C | |
| JUL 6 | 21.5°C | 18.6°C | |
| JUL 7 | 21.5°C | 18.8°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 | 4°C |
| February | 0°C | 1°C | 4°C |
| March | 0°C | 1°C | 3°C |
| April | 1°C | 3°C | 6°C |
| May | 5°C | 9°C | 13°C |
| June | 10°C | 14°C | 18°C |
| July | 18°C | 22°C | 25°C |
| August | 21°C | 23°C | 26°C |
| September | 19°C | 21°C | 24°C |
| October | 11°C | 16°C | 20°C |
| November | 3°C | 8°C | 12°C |
| December | 0°C | 3°C | 6°C |
Branch Lake: Water Temperature by Location
Branch Lake: Weather Forecast
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July 5
Location & Local Information
Branch Lake in Maine experiences the seasonal temperature swings typical of lakes in the region. After ice-out in spring, surface temperatures commonly range from roughly 35–55°F (2–13°C) as runoff and cool air keep waters chilly. By early to midsummer the surface usually warms to about 65–75°F (18–24°C) on sunny days, though deeper or shaded parts of the lake remain several degrees cooler. In early fall the surface cools back toward roughly 50–65°F (10–18°C) before ice forms; under winter ice the water near the surface drops to around 32–40°F (0–4°C). These are approximate ranges and local conditions — weather, depth, and flow — will influence exact temperatures at any given time.
Swimming at Branch Lake is generally possible at public access points and informal shoreline spots when water temperatures and conditions are safe, but availability depends on local access, posted rules, and water quality advisories. Cold surface temperatures outside mid-summer can make prolonged swimming uncomfortable or risky, and ice cover in winter makes swimming unsafe. Visitors should check town or landowner signage, observe any water-quality notices, and be mindful of sudden depth changes and cold-water shock; using a wetsuit or limiting time in cooler water can reduce risk.