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San Juan River
San Juan River Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in San Juan River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in San Juan River
39°F
TODAY
39°F
YESTERDAY
37°F
A WEEK AGO
As of today, the minimum water temperature in the San Juan River ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters.
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.
Analysis, Historical Data, and Forecast of Water Temperature
Water Temperature Chart for San Juan River Over the Last 30 Days
Today the water temperature in San Juan River is lower than the same day in previous years. The water temperature range here in February is from 34°F to 48°F. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.
The forecasted water temperature values for San Juan River are presented in the table below.
The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.
Daily Water Temperature Chart
| Date | Current | Average | Forecast |
|---|---|---|---|
| Feb 16 | 37°F | 41°F | |
| Feb 17 | 38°F | 41°F | |
| Feb 18 | 38°F | 41°F | |
| Feb 19 | 37°F | 41°F | |
| Feb 20 | 37°F | 41°F | |
| Feb 21 | 38°F | 41°F | |
| Feb 22 | 39°F | 41°F | |
| Feb 23 | 39°F | 41°F | |
| Feb 24 | 41°F | 39°F | |
| Feb 25 | 41°F | 39°F | |
| Feb 26 | 41°F | 39°F | |
| Feb 27 | 41°F | 39°F | |
| Feb 28 | 41°F | 40°F | |
| Mar 1 | 44°F | 40°F | |
| Mar 2 | 44°F | 40°F | |
| Mar 3 | 44°F | 40°F |
Water Temperature Ranges in San Juan River by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 34°F | 41°F | 48°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 34°F | 41°F | 48°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 44°F | 52°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 41°F | 50°F | 61°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 70°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 65°F | 72°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 68°F | 75°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 71°F | 73°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 64°F | 66°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 61°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 47°F | 61°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 40°F | 46°F |
Monthly Water Temperature Histogram for San Juan River
Water Temperature in Cities and Towns on San Juan River
San Juan River Weather
FEBRUARY 23
32°F / 59°F
overcastrain: 0% | wind: 8 mph
FEBRUARY 24
41°F / 63°F
overcastrain: 0% | wind: 7 mph
FEBRUARY 25
43°F / 66°F
overcastrain: 0% | wind: 4 mph
FEBRUARY 26
43°F / 66°F
clear skyrain: 0% | wind: 7 mph
FEBRUARY 27
45°F / 64°F
overcastrain: 0% | wind: 7 mph
FEBRUARY 28
48°F / 64°F
overcastrain: 5% | wind: 11 mph
Water Temperature in San Juan River: General Trends and Swimming Opportunities
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.
Geographical Location of San Juan River
Nearby Rivers
Frequently Asked Questions About San Juan River and its Water Temperatures
What is the current water temperature in San Juan River?
The water temperature today in San Juan River ranges from 35°F (1.4°C) to 41°F (4.9°C).
What is the water temperature in San Juan River during the summer months?
The average water temperature in San Juan River during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.
What is the water temperature in San Juan River in May?
The average water temperature in San Juan River in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in San Juan River in September?
The average water temperature in San Juan River in September is typically between 52°F to 66°F (11°C to 19°C).
Where does San Juan River flow?
San Juan River flows through United States (Utah, Colorado, New Mexico).
Is it possible to swim in the San Juan River?
Yes, it is possible to swim in the San Juan River. However, water safety considerations such as current and water quality should always be taken into account.