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 21.3°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 5 | 18.9°C | 23.0°C | |
| JUN 6 | 18.7°C | 23.0°C | |
| JUN 7 | 19.2°C | 23.0°C | |
| JUN 8 | 19.3°C | 23.0°C | |
| JUN 10 | 19.5°C | 23.0°C | |
| JUN 11 | 20.3°C | 23.0°C | |
| JUN 12 | 21.3°C | 23.0°C | |
| JUN 13 | 23.0°C | 21.4°C | |
| JUN 14 | 23.0°C | 21.5°C | |
| JUN 15 | 23.0°C | 21.6°C | |
| JUN 16 | 23.0°C | 21.6°C | |
| JUN 17 | 23.0°C | 21.7°C | |
| JUN 18 | 23.0°C | 21.8°C | |
| JUN 19 | 23.0°C | 21.9°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 | 23°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
June 13
June 14
June 15
June 16
June 17
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.