Gardner Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Gardner Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Gardner Lake today is 17.5°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 | 16.1°C | 14.0°C | |
| JUN 24 | 16.1°C | 14.0°C | |
| JUN 25 | 16.1°C | 14.0°C | |
| JUN 26 | 16.2°C | 14.0°C | |
| JUN 27 | 17.1°C | 14.0°C | |
| JUN 28 | 17.1°C | 14.0°C | |
| JUN 29 | 17.2°C | 14.0°C | |
| JUN 30 | 17.3°C | 14.0°C | |
| JUL 1 | 20.5°C | 17.7°C | |
| JUL 2 | 20.5°C | 17.8°C | |
| JUL 3 | 20.5°C | 18.0°C | |
| JUL 4 | 20.5°C | 18.1°C | |
| JUL 5 | 20.5°C | 18.3°C | |
| JUL 6 | 20.5°C | 18.4°C | |
| JUL 7 | 20.5°C | 18.6°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 | 3°C | 6°C |
| February | 0°C | 3°C | 6°C |
| March | 0°C | 3°C | 6°C |
| April | 1°C | 5°C | 9°C |
| May | 6°C | 10°C | 14°C |
| June | 10°C | 14°C | 18°C |
| July | 17°C | 21°C | 24°C |
| August | 22°C | 24°C | 27°C |
| September | 18°C | 20°C | 22°C |
| October | 10°C | 14°C | 18°C |
| November | 4°C | 8°C | 12°C |
| December | 0°C | 3°C | 7°C |
Gardner Lake: Water Temperature by Location
Gardner Lake: Weather Forecast
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Location & Local Information
Gardner Lake in Maine experiences strong seasonal swings in surface temperature that affect swimming conditions. In spring (April–May) the water commonly ranges from about 40–60°F (4–15°C) as the lake thaws and stratification begins. By early summer (June) surface temperatures typically climb into the 60–70°F (15–21°C) range, and peak midsummer readings in July and August often reach roughly 70–78°F (21–26°C) on warm, sunny days. In the fall (September–October) the surface cools again into the 50–65°F (10–18°C) band before winter brings near-freezing conditions around 32–39°F (0–4°C) and often ice cover. Deeper water remains noticeably colder year-round due to thermal layering.
Swimming at Gardner Lake is generally permitted during the warmer months, particularly where there are public or private access points and designated swimming areas. Summer surface temperatures commonly become comfortable for recreational swimming, but local rules, water-quality advisories, and safety measures should be observed; transient issues such as blue‑green algae, bacterial contamination, or lack of lifeguards can make swimming unsafe even when the temperature is pleasant. Outside of summer, the cold surface and risk of hypothermia or ice hazards make open‑water swimming inadvisable except for experienced, well‑equipped cold‑water swimmers.