Moodus Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Moodus Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Moodus Reservoir today is 15.9°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 |
|---|---|---|---|
| OCT 5 | 18.8°C | 17.0°C | |
| OCT 6 | 17.9°C | 17.0°C | |
| OCT 7 | 18.5°C | 17.0°C | |
| OCT 8 | 17.4°C | 17.0°C | |
| OCT 9 | 16.7°C | 17.0°C | |
| OCT 10 | 17.1°C | 17.0°C | |
| OCT 11 | 16.8°C | 17.0°C | |
| OCT 12 | 16.6°C | 17.0°C | |
| OCT 13 | 17.0°C | 16.0°C | |
| OCT 14 | 17.0°C | 16.0°C | |
| OCT 15 | 17.0°C | 16.1°C | |
| OCT 16 | 17.0°C | 16.1°C | |
| OCT 17 | 17.0°C | 16.2°C | |
| OCT 18 | 17.0°C | 16.2°C | |
| OCT 19 | 17.0°C | 16.3°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 |
|---|---|---|---|
| January | 0°C | 3°C | 5°C |
| February | 0°C | 1°C | 4°C |
| March | 1°C | 3°C | 6°C |
| April | 5°C | 10°C | 14°C |
| May | 12°C | 15°C | 19°C |
| June | 14°C | 19°C | 24°C |
| July | 21°C | 26°C | 30°C |
| August | 24°C | 27°C | 29°C |
| September | 21°C | 24°C | 27°C |
| October | 13°C | 17°C | 21°C |
| November | 6°C | 11°C | 14°C |
| December | 1°C | 5°C | 8°C |
Moodus Reservoir: Water Temperature by Location
Moodus Reservoir: Weather Forecast
October 13
October 14
October 15
October 16
October 17
Location & Local Information
Moodus Reservoir, sometimes called the Lake of Moodus, experiences the same seasonal water temperature swings typical of inland Connecticut lakes. In winter the surface is commonly near freezing and frequently forms ice, roughly 32–40°F (0–4°C). As spring warms, surface temperatures climb into the 40–60°F (4–16°C) range, which can still feel quite chilly for swimming. Peak summer conditions usually bring the warmest surface readings, often about 70–78°F (21–26°C) on warm, calm days; deeper water remains cooler. By autumn the lake cools again to roughly 50–65°F (10–18°C) as air temperatures drop and stratification breaks down.
Swimming opportunities at Moodus Reservoir are limited by practical and regulatory factors rather than by a single universal prohibition. Some parts of the shoreline are used for informal swimming and boating, but the reservoir lacks extensive developed beaches or lifeguarded areas, and access may be restricted by town rules, private shoreline ownership, or water-supply protections in certain zones. Water quality, boat traffic and the absence of safety services mean swimmers should exercise caution, wear flotation if appropriate, and check local signage or town authorities for current rules before entering the water.