Roswell — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Roswell, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Roswell today is 23.8°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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUL 15 | 24.1°C | 25.5°C | |
| JUL 16 | 24.1°C | 25.5°C | |
| JUL 17 | 24.8°C | 25.5°C | |
| JUL 18 | 24.0°C | 25.5°C | |
| JUL 19 | 24.2°C | 25.5°C | |
| JUL 20 | 24.8°C | 25.5°C | |
| JUL 21 | 24.9°C | 25.5°C | |
| JUL 22 | 24.2°C | 25.5°C | |
| JUL 23 | 25.5°C | 23.9°C | |
| JUL 24 | 25.5°C | 24.0°C | |
| JUL 25 | 25.5°C | 24.1°C | |
| JUL 26 | 25.5°C | 24.1°C | |
| JUL 27 | 25.5°C | 24.2°C | |
| JUL 28 | 25.5°C | 24.3°C | |
| JUL 29 | 25.5°C | 24.4°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 | 4°C | 8°C | 12°C |
| February | 3°C | 7°C | 12°C |
| March | 6°C | 11°C | 16°C |
| April | 12°C | 16°C | 20°C |
| May | 16°C | 20°C | 24°C |
| June | 18°C | 23°C | 27°C |
| July | 21°C | 26°C | 29°C |
| August | 22°C | 24°C | 27°C |
| September | 21°C | 24°C | 27°C |
| October | 17°C | 21°C | 25°C |
| November | 9°C | 14°C | 18°C |
| December | 6°C | 10°C | 14°C |
Roswell: Weather Forecast
July 23
July 24
July 25
July 26
Location & Local Information
The Chattahoochee River flows directly through Roswell, Georgia, and its water temperature is heavily influenced by the upstream Buford Dam, which releases very cold water from the bottom of Lake Lanier. Consequently, even in the peak summer months, the river remains much cooler than typical Georgia lakes, with temperatures generally peaking in a chilly range of 68∘F to 75∘F (20∘C to 24∘C). In the winter months, the temperature drops further, usually ranging from 40∘F to 55∘F (4∘C to 13∘C).
Swimming in the Chattahoochee River near Roswell is strongly discouraged by park authorities due to the serious risks involved. While the river is extremely popular for floating, tubing, kayaking, and fishing, its cold temperature—especially below 55∘F—poses a major risk of hypothermia, even to strong swimmers. Additionally, the river's flow and water level can change suddenly and dramatically due to unscheduled releases from upstream dams, creating dangerous currents. Finally, water quality can degrade rapidly after heavy rainfall due to stormwater runoff, making primary contact recreation unsafe due to high E. coli bacteria counts.