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San Joaquin River
San Joaquin River Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in San Joaquin 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 Joaquin River
54°F
TODAY
53°F
YESTERDAY
52°F
A WEEK AGO
As of today, the minimum water temperature in the San Joaquin River ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used.
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 Joaquin River Over the Last 30 Days
Today the water temperature in San Joaquin River is higher than the same day in previous years. The water temperature range here in February is from 37°F to 54°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 Joaquin 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 | 52°F | 46°F | |
| Feb 17 | 53°F | 46°F | |
| Feb 18 | 53°F | 46°F | |
| Feb 19 | 53°F | 46°F | |
| Feb 20 | 53°F | 46°F | |
| Feb 21 | 53°F | 46°F | |
| Feb 22 | 53°F | 46°F | |
| Feb 23 | 54°F | 46°F | |
| Feb 24 | 46°F | 53°F | |
| Feb 25 | 46°F | 53°F | |
| Feb 26 | 46°F | 52°F | |
| Feb 27 | 46°F | 52°F | |
| Feb 28 | 46°F | 52°F | |
| Mar 1 | 44°F | 51°F | |
| Mar 2 | 44°F | 51°F | |
| Mar 3 | 44°F | 50°F |
Water Temperature Ranges in San Joaquin River by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 45°F | 52°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 46°F | 54°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 Joaquin River
Water Temperature in Cities and Towns on San Joaquin River
San Joaquin River Weather
FEBRUARY 23
39°F / 72°F
fograin: 3% | wind: 7 mph
FEBRUARY 24
50°F / 72°F
overcastrain: 1% | wind: 11 mph
FEBRUARY 25
48°F / 70°F
overcastrain: 1% | wind: 12 mph
FEBRUARY 26
46°F / 72°F
clear skyrain: 0% | wind: 12 mph
FEBRUARY 27
52°F / 70°F
overcastrain: 7% | wind: 7 mph
FEBRUARY 28
46°F / 68°F
overcastrain: 7% | wind: 14 mph
Water Temperature in San Joaquin River: General Trends and Swimming Opportunities
Source Thousand Island Lake
• location Ansel Adams Wilderness, Sierra Nevada
Mouth Suisun Bay
• location Antioch, Contra Costa/Solano Counties
Length 366 mi (589 km)
The San Joaquin River, winding through California’s Central Valley, is a significant waterway with a diverse landscape ranging from mountain-fed streams to broad, slow-moving sections. The river’s water temperature varies depending on the season and location. In the cooler months, temperatures often stay between 45 and 55°F (7 to 13°C), particularly in higher elevation areas or near the river’s headwaters. During summer, downstream stretches can warm to around 70°F (21°C), especially in the lower valley regions, offering more comfortable conditions for recreational activities.
Swimming opportunities in the San Joaquin River depend on the specific area. Calm stretches near parks and recreation zones are more suitable for wading or swimming, particularly during the warmer months. However, parts of the river can have strong currents or fluctuating water levels due to agricultural water management and dam releases. These factors make it essential to choose swimming spots carefully and prioritize safety. For those seeking a blend of relaxation and adventure, the river also offers activities like fishing, kayaking, and enjoying the natural beauty of California’s landscapes.
Geographical Location of San Joaquin River
Frequently Asked Questions About San Joaquin River and its Water Temperatures
What is the current water temperature in San Joaquin River?
The water temperature today in San Joaquin River ranges from 51°F (10.5°C) to 53°F (11.8°C).
What is the water temperature in San Joaquin River during the summer months?
The average water temperature in San Joaquin 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 Joaquin River in May?
The average water temperature in San Joaquin River in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in San Joaquin River in September?
The average water temperature in San Joaquin River in September is typically between 52°F to 66°F (11°C to 19°C).
Where does San Joaquin River flow?
San Joaquin River flows through United States (California).
Is it possible to swim in the San Joaquin River?
Yes, it is possible to swim in the San Joaquin River. However, due to varying water conditions and potential hazards, it may not always be safe.
What major cities are located on San Joaquin River?
Cities along the course of San Joaquin River include Fresno (California), Modesto (California), Stockton (California).