Moore Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Moore Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Moore Reservoir today is 19.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 25 | 17.5°C | 14.7°C | |
| JUN 26 | 17.9°C | 14.7°C | |
| JUN 27 | 18.3°C | 14.7°C | |
| JUN 28 | 18.3°C | 14.7°C | |
| JUN 29 | 18.2°C | 14.7°C | |
| JUN 30 | 18.3°C | 14.7°C | |
| JUL 1 | 18.9°C | 21.5°C | |
| JUL 2 | 19.0°C | 21.5°C | |
| JUL 3 | 21.5°C | 19.9°C | |
| JUL 4 | 21.5°C | 20.0°C | |
| JUL 5 | 21.5°C | 20.1°C | |
| JUL 6 | 21.5°C | 20.1°C | |
| JUL 7 | 21.5°C | 20.2°C | |
| JUL 8 | 21.5°C | 20.3°C | |
| JUL 9 | 21.5°C | 20.4°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 | 2°C | 5°C |
| February | 0°C | 3°C | 6°C |
| March | 1°C | 4°C | 6°C |
| April | 0°C | 5°C | 9°C |
| May | 5°C | 10°C | 15°C |
| June | 11°C | 15°C | 19°C |
| July | 16°C | 22°C | 27°C |
| August | 18°C | 22°C | 26°C |
| September | 17°C | 21°C | 24°C |
| October | 9°C | 13°C | 17°C |
| November | 5°C | 8°C | 11°C |
| December | 0°C | 3°C | 6°C |
Moore Reservoir: Water Temperature by Location
Moore Reservoir: Weather Forecast
July 3
July 4
July 5
July 6
Location & Local Information
Moore Reservoir, the impoundment behind Moore Dam on the Connecticut River in New Hampshire, experiences a wide range of surface temperatures through the year. In spring, as ice melts and inflows run cold, surface water typically ranges from about 40–60°F (4–15°C). By summer, surface temperatures commonly climb to roughly 68–75°F (20–24°C), with peak late-summer spots occasionally reaching the upper 70s°F (24–26°C). Fall sees a steady cooling back into the 50–65°F (10–18°C) range, and in winter the reservoir approaches freezing, with surface temperatures around 32°F (0°C) where ice forms; deeper water remains considerably colder year-round because of thermal stratification.
Swimming in Moore Reservoir is physically possible during the warmer months, but formal public beaches and lifeguard services are limited. Whether you can swim in a given spot depends on shoreline ownership, local rules, and access. There are safety considerations beyond temperature: cold, deep water can cause hypothermia even on warm days, boat traffic and currents related to dam releases can create hazards, and ice in winter makes swimming dangerous. For these reasons, people should only swim where allowed, be mindful of conditions, and treat the reservoir as swim-at-your-own-risk unless using a designated, supervised area.