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Graham Lake — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Graham Lake, 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

27.1°C
Today
26.9°C
Yesterday
26.0°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 Graham Lake today is 27.1°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. 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 July 11 to August 11

Table of Daily Sea Temperature Data

Date Current Average Forecast
AUG 426.0°C24.6°C
AUG 526.0°C24.6°C
AUG 626.4°C24.6°C
AUG 726.6°C24.6°C
AUG 826.7°C24.6°C
AUG 926.8°C24.6°C
AUG 1026.9°C24.6°C
AUG 1127.1°C24.6°C
AUG 1224.6°C27.0°C
AUG 1324.6°C26.9°C
AUG 1424.6°C26.7°C
AUG 1524.6°C26.6°C
AUG 1624.6°C26.5°C
AUG 1724.6°C26.4°C
AUG 1824.6°C26.2°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°C2°C5°C
February0°C2°C4°C
March0°C1°C3°C
April0°C3°C7°C
May4°C9°C14°C
June11°C15°C19°C
July18°C23°C27°C
August22°C25°C28°C
September18°C21°C24°C
October10°C14°C18°C
November3°C8°C12°C
December0°C3°C6°C

Graham Lake: Water Temperature by Location

Graham Lake: Weather Forecast

August 12

° / °
light drizzle
rain: 8% | wind:

August 13

° / °
slight thunderstorm
rain: 65% | wind:

August 14

° / °
overcast
rain: 65% | wind:

August 15

° / °
overcast
rain: 13% | wind:

Location & Local Information

Graham Lake in Maine experiences the seasonal temperature swings typical of northern New England lakes. Surface temperatures in spring generally range from about 45 to 60 °F (7 to 16 °C) as the water thaws and slowly warms. In the warmest part of summer surface readings commonly reach roughly 65 to 75 °F (18 to 24 °C), though deeper water remains much cooler, often staying in the 40s °F (4–9 °C). By fall the surface cools back into the 50 to 65 °F (10 to 18 °C) band, and in winter the lake is at or just above freezing with ice cover; water under the ice is typically around 32 to 39 °F (0 to 4 °C).

Swimming at Graham Lake is generally possible and frequently done during the summer months when surface temperatures are most comfortable. Access is subject to public access points, private shoreline ownership, and any posted advisories; cold-water shock and the risk of hypothermia make early- and late-season swims less safe because even warm days can have chilly sub-surface temperatures. As with any lake, swimmers should heed local water-quality notices (for example, algal bloom warnings), watch for boat traffic, and use caution near drop-offs where deeper, colder water may be encountered.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Graham Lake?
Water Temperature in Graham Lake today is 27.1°C.
What is the water temperature in Graham Lake during the summer months?
The water temperature in Graham Lake in summer fluctuates in the range of 11°C - 28°C.
Is it possible to swim in Graham Lake and what are the possibilities for this?
Yes, it is possible to swim in Graham Lake located in Maine, not Vermont. However, the suitability for swimming can vary based on local regulations, water quality, and temperature.