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Grand Lake Matagamon — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Grand Lake Matagamon, trends, monthly ranges and the forecast for the coming days.

Lake Winnipesaukee, United States
Lake Winnipesaukee, United States © CC BY 3.0

Current Water Temperature

15.8°C
Today
15.9°C
Yesterday
17.3°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in Grand Lake Matagamon today is 15.8°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

From August 21 to September 21

Table of Daily Sea Temperature Data

Date Current Average Forecast
SEP 1417.4°C19.4°C
SEP 1517.4°C19.4°C
SEP 1616.4°C19.4°C
SEP 1716.0°C19.4°C
SEP 1816.6°C19.4°C
SEP 1915.9°C19.4°C
SEP 2016.0°C19.4°C
SEP 2219.4°C16.0°C
SEP 2319.4°C16.2°C
SEP 2419.4°C16.3°C
SEP 2519.4°C16.5°C
SEP 2619.4°C16.7°C
SEP 2719.4°C16.9°C
SEP 2819.4°C17.1°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
January0°C3°C6°C
February1°C3°C6°C
March0°C2°C5°C
April0°C3°C6°C
May4°C8°C12°C
June10°C14°C18°C
July17°C22°C26°C
August18°C22°C26°C
September17°C19°C22°C
October6°C12°C17°C
November1°C6°C10°C
December0°C3°C6°C

Grand Lake Matagamon: Water Temperature by Location

Grand Lake Matagamon: Weather Forecast

September 22

° / °
overcast
rain: 0% | wind:

September 23

° / °
clear sky
rain: 0% | wind:

September 24

° / °
clear sky
rain: 2% | wind:

September 25

° / °
overcast
rain: 24% | wind:

September 26

° / °
overcast
rain: 27% | wind:

Location & Local Information

Grand Lake Matagamon in northern Maine tends to be a cool, forest‑surrounded body of water whose temperatures reflect seasonal New England patterns. After ice‑out in spring, surface waters commonly range from about 35–60°F (2–15°C) as the lake slowly warms. In mid to late summer typical surface temperatures are roughly 60–74°F (15–23°C), with shallow, sheltered bays occasionally reaching the mid‑70s°F (24–26°C) on warm weeks. By early fall the lake cools back toward roughly 50–65°F (10–18°C) before freezing again in winter; beneath the ice the water will sit near the temperature of maximum density around 34–39°F (1–4°C).

Swimming at Grand Lake Matagamon is generally possible, but conditions differ from more developed public beaches. There are no widespread lifeguarded facilities, and access points are often rustic, so swimmers should be prepared for sudden depth changes, cold water temperatures, and limited shore support. Water that is below about 60°F (15–16°C) can induce cold‑shock and increase hypothermia risk, so summer is the most comfortable season for swimming, while spring and fall require caution and winter swimming is unsafe except for experienced, well‑equipped individuals. Always observe posted advisories and use common‑sense safety measures.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Grand Lake Matagamon?
Water Temperature in Grand Lake Matagamon today is 15.8°C.
What is the water temperature in Grand Lake Matagamon during the summer months?
The water temperature in Grand Lake Matagamon in summer fluctuates in the range of 10°C - 26°C.
Is it possible to swim in Grand Lake Matagamon and what are the possibilities for this?
Yes, it's possible to swim in Grand Lake Matagamon, Maine. Opportunities include public access points, campgrounds, and boat launches, which may also provide swimming options.