Potomac River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Potomac River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Potomac River today is 24.6°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 |
|---|---|---|---|
| JUN 6 | 21.1°C | 19.3°C | |
| JUN 7 | 22.4°C | 19.3°C | |
| JUN 8 | 22.6°C | 19.3°C | |
| JUN 10 | 23.3°C | 19.3°C | |
| JUN 11 | 23.3°C | 19.3°C | |
| JUN 12 | 23.3°C | 19.3°C | |
| JUN 14 | 19.3°C | 24.3°C | |
| JUN 15 | 19.3°C | 24.1°C | |
| JUN 16 | 19.3°C | 23.8°C | |
| JUN 17 | 19.3°C | 23.5°C | |
| JUN 18 | 19.3°C | 23.3°C | |
| JUN 19 | 19.3°C | 23.0°C | |
| JUN 20 | 19.3°C | 22.7°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 | 1°C | 5°C | 9°C |
| February | 0°C | 5°C | 9°C |
| March | 3°C | 9°C | 15°C |
| April | 5°C | 11°C | 18°C |
| May | 8°C | 15°C | 23°C |
| June | 14°C | 19°C | 25°C |
| July | 17°C | 22°C | 26°C |
| August | 17°C | 21°C | 25°C |
| September | 11°C | 17°C | 23°C |
| October | 8°C | 15°C | 21°C |
| November | 3°C | 8°C | 16°C |
| December | 3°C | 5°C | 8°C |
Potomac River: Water Temperature by Location
Potomac River: Weather Forecast
June 13
June 14
June 15
June 16
June 17
Location & Local Information
Source North Branch
• location Fairfax Stone, Preston County, West Virginia
Mouth Chesapeake Bay
• location St. Mary's County, Maryland/Northumberland County, Virginia, United States
Length 405 mi (652 km)
The Potomac River, flowing through the U.S. states of Maryland, Virginia, and Washington, D.C., offers a variety of recreational activities, including swimming. Water temperatures in the river can fluctuate depending on the season, typically ranging from about 40°F (4°C) during the winter months to 70-80°F (21-27°C) in the summer, making it more comfortable for swimming as the weather warms up. While the Potomac is not as warm as some southern rivers, it still provides a refreshing dip for those who enjoy outdoor activities along the riverbanks.
Swimming in the Potomac River is popular in certain areas, particularly in recreational zones such as Theodore Roosevelt Island and near the Great Falls Park. These areas offer calmer stretches of the river where swimmers can safely enjoy the water. However, in other parts of the river, currents can be strong and the water may be murky, which can pose safety risks. Many people prefer to swim in designated areas or participate in water sports like kayaking and canoeing, where they can maintain better control of their experience. Despite these factors, the Potomac remains a beloved destination for water activities and provides a scenic backdrop for those looking to enjoy the outdoors.