San Juan River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the San Juan River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the San Juan River today is 20.9°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 3 | 19.4°C | 18.5°C | |
| JUN 4 | 19.8°C | 18.5°C | |
| JUN 5 | 20.0°C | 18.5°C | |
| JUN 6 | 20.4°C | 18.5°C | |
| JUN 7 | 20.6°C | 18.5°C | |
| JUN 8 | 21.3°C | 18.5°C | |
| JUN 10 | 20.9°C | 18.5°C | |
| JUN 11 | 18.5°C | 20.8°C | |
| JUN 12 | 18.5°C | 20.7°C | |
| JUN 13 | 18.5°C | 20.5°C | |
| JUN 14 | 18.5°C | 20.4°C | |
| JUN 15 | 18.5°C | 20.3°C | |
| JUN 16 | 18.5°C | 20.2°C | |
| JUN 17 | 18.5°C | 20.1°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 | 1°C | 5°C | 9°C |
| March | 3°C | 9°C | 16°C |
| April | 5°C | 10°C | 16°C |
| May | 8°C | 13°C | 21°C |
| June | 14°C | 19°C | 23°C |
| July | 17°C | 20°C | 24°C |
| August | 17°C | 21°C | 23°C |
| September | 11°C | 16°C | 21°C |
| October | 8°C | 13°C | 18°C |
| November | 3°C | 8°C | 16°C |
| December | 3°C | 6°C | 10°C |
San Juan River: Water Temperature by Location
San Juan River: Weather Forecast
June 9
June 10
June 11
June 12
Location & Local Information
Source San Juan Mountains
• location Archuleta County, Colorado
• elevation 7,553 ft (2,302 m)
Mouth Colorado River (Lake Powell)
• location San Juan County, Utah
• elevation 3,704 ft (1,129 m)
Length 383 mi (616 km)
The San Juan River, flowing through the stunning red rock landscapes of Utah, is a scenic river that offers a unique blend of outdoor experiences. Its water temperature varies with the seasons, typically remaining cool due to its high desert location and the influence of upstream sources. In the warmer months, the river’s temperature can reach around 60–70°F (15–21°C), making it refreshing for swimming and other water activities. During the colder months, especially in spring and fall, temperatures can drop below 50°F (10°C), which makes the river less inviting for extended swims.
While the San Juan River is not known as a major swimming destination, it offers several areas where wading or taking a quick dip can be enjoyable, particularly in calmer sections. Many visitors use the river for recreational kayaking, rafting, or fishing, where the water's coolness adds a pleasant contrast to the often warm desert air. The river is also a favorite for float trips, where swimming can be a refreshing break between paddling. However, swimmers should be mindful of varying water levels and the river’s currents, which can shift depending on weather patterns and seasonal changes. For those in search of a tranquil dip in a unique natural setting, the San Juan River provides a peaceful opportunity to connect with the rugged beauty of the region.