Temperature:

Your Favorite Locations:

Your favorites list is empty.

Swan Lake — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Swan 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

24.5°C
Today
24.9°C
Yesterday
23.3°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 Swan Lake today is 24.5°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 June 20 to July 21

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUL 1423.3°C21.2°C
JUL 1525.4°C21.2°C
JUL 1625.3°C21.2°C
JUL 1726.0°C21.2°C
JUL 1825.2°C21.2°C
JUL 1925.0°C21.2°C
JUL 2024.9°C21.2°C
JUL 2124.9°C21.2°C
JUL 2221.2°C24.3°C
JUL 2321.2°C24.2°C
JUL 2421.2°C24.0°C
JUL 2521.2°C23.8°C
JUL 2621.2°C23.7°C
JUL 2721.2°C23.5°C
JUL 2821.2°C23.3°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
January0°C1°C4°C
February0°C2°C4°C
March0°C2°C4°C
April1°C4°C6°C
May5°C9°C14°C
June10°C15°C19°C
July17°C21°C26°C
August20°C23°C25°C
September19°C21°C24°C
October9°C14°C19°C
November3°C8°C13°C
December0°C2°C5°C

Swan Lake: Water Temperature by Location

Swan Lake: Weather Forecast

July 22

° / °
moderate rain showers
rain: 88% | wind:

July 23

° / °
light drizzle
rain: 53% | wind:

July 24

° / °
clear sky
rain: 4% | wind:

July 25

° / °
overcast
rain: 6% | wind:

July 26

° / °
overcast
rain: 12% | wind:

Location & Local Information

Swan Lake in Maine typically follows the seasonal pattern of northern temperate lakes, with surface water temperatures that swing markedly through the year. In winter the lake commonly sits at or just above freezing, around 32°F (0°C) under ice cover. During spring it warms slowly, roughly 34–55°F (1–13°C) as melt and runoff continue to cool the surface. By summer, surface temperatures are most comfortable for recreation, often ranging from about 64–74°F (18–23°C) and occasionally reaching the mid-70s°F (24–26°C) on particularly warm spells; deeper water remains significantly colder year-round. In autumn the lake cools back into the 50s°F (10–15°C) as air temperatures drop and stratification breaks down.

Swimming at Swan Lake is generally permitted and commonly practiced because it is an inland recreational lake with shoreline access and designated launch or beach areas in some spots. Whether a specific site is suitable depends on local rules, property ownership, and current water-quality conditions; seasonal concerns include cold-shock risk early and late in the year, declining temperatures below comfortable levels outside mid-summer, and occasional algae or bacterial advisories that can temporarily restrict swimming. For safety and compliance, swimmers should observe posted notices and local health advisories before entering the water.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Swan Lake?
Water Temperature in Swan Lake today is 24.5°C.
What is the water temperature in Swan Lake during the summer months?
The water temperature in Swan Lake in summer fluctuates in the range of 10°C - 26°C.
Is it possible to swim in Swan Lake and what are the possibilities for this?
Yes, it is possible to swim in Swan Lake, Maine. However, possibilities might be influenced by local rules, weather conditions, and individual swimming capabilities.