Lake Moultrie — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Moultrie, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Moultrie today is 19.6°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 |
|---|---|---|---|
| NOV 7 | 19.9°C | 17.1°C | |
| NOV 8 | 20.1°C | 17.1°C | |
| NOV 9 | 19.8°C | 17.1°C | |
| NOV 10 | 19.7°C | 17.1°C | |
| NOV 11 | 19.5°C | 17.1°C | |
| NOV 12 | 19.3°C | 17.1°C | |
| NOV 13 | 18.6°C | 17.1°C | |
| NOV 14 | 19.8°C | 17.1°C | |
| NOV 15 | 17.1°C | 19.5°C | |
| NOV 16 | 17.1°C | 19.4°C | |
| NOV 17 | 17.1°C | 19.2°C | |
| NOV 18 | 17.1°C | 19.1°C | |
| NOV 19 | 17.1°C | 19.0°C | |
| NOV 20 | 17.1°C | 18.9°C | |
| NOV 21 | 17.1°C | 18.7°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 | 6°C | 12°C | 17°C |
| February | 6°C | 11°C | 16°C |
| March | 8°C | 14°C | 20°C |
| April | 14°C | 19°C | 24°C |
| May | 18°C | 22°C | 26°C |
| June | 21°C | 27°C | 32°C |
| July | 22°C | 27°C | 32°C |
| August | 24°C | 29°C | 34°C |
| September | 23°C | 28°C | 32°C |
| October | 19°C | 24°C | 28°C |
| November | 14°C | 17°C | 20°C |
| December | 9°C | 13°C | 15°C |
Lake Moultrie: Water Temperature by Location
Lake Moultrie: Weather Forecast
November 15
November 16
November 17
November 18
November 19
November 20
Location & Local Information
Lake Moultrie, a large reservoir in South Carolina, experiences a wide annual swing in surface water temperatures. In winter months the surface commonly falls into the 40s–50s °F (about 4–13 °C). Spring sees a gradual rise into the mid-50s to low 70s °F (13–21 °C) as air temperatures warm, while summer surface values frequently reach the mid-70s to mid-80s °F and can peak into the high 80s or low 90s °F (approximately 24–32 °C, occasionally up to ~33 °C) on warm spells. In autumn the water cools back toward the 60s–70s °F range (16–24 °C). These ranges vary with depth, weather patterns, inflows, and time of day, so swimmers can encounter noticeably different conditions at different spots or times.
Swimming is generally permitted in and around Lake Moultrie, particularly during the warmer months when surface temperatures are most comfortable. However, swimming is often unmanaged and can be restricted at specific shorelines because of boat traffic, submerged hazards, and occasional water-quality advisories such as algal blooms. Cold-season swimming carries a notable hypothermia risk when water temperatures fall below about 60 °F (15–16 °C), so most people choose to swim in late spring through early fall. Using designated recreational areas and checking local notices improves safety.