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San Luis Reservoir
San Luis Reservoir Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in San Luis Reservoir, 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 Lake Water Temperature Information
58°F
TODAY
59°F
YESTERDAY
64°F
A WEEK AGO
As of today, the minimum water temperature in the San Luis Reservoir ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear.
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 Luis Reservoir Over the Last 30 Days
Today the water temperature in San Luis Reservoir is lower than the same day in previous years. The water temperature range here in April is from 55°F to 64°F. The water temperature has decreased over the past 7 days but has increased over the past month.
The forecasted water temperature values for San Luis Reservoir 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 |
|---|---|---|---|
| Apr 23 | 64°F | 60°F | |
| Apr 24 | 64°F | 60°F | |
| Apr 25 | 64°F | 60°F | |
| Apr 26 | 61°F | 60°F | |
| Apr 27 | 60°F | 60°F | |
| Apr 28 | 59°F | 60°F | |
| Apr 29 | 59°F | 60°F | |
| Apr 30 | 58°F | 60°F | |
| May 1 | 61°F | 58°F | |
| May 2 | 61°F | 59°F | |
| May 3 | 61°F | 59°F | |
| May 4 | 61°F | 59°F | |
| May 5 | 61°F | 59°F | |
| May 6 | 61°F | 59°F | |
| May 7 | 61°F | 60°F | |
| May 8 | 61°F | 60°F |
Water Temperature Ranges in San Luis Reservoir by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 53°F | 57°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 52°F | 57°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 43°F | 51°F | 59°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 55°F | 60°F | 64°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 61°F | 66°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 67°F | 72°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 64°F | 69°F | 73°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 70°F | 74°F | 79°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 66°F | 70°F | 75°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 67°F | 72°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 61°F | 66°F | 70°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 54°F | 58°F | 63°F |
Monthly Water Temperature Histogram for San Luis Reservoir
San Luis Reservoir Weather
APRIL 30
54°F / 86°F
overcastrain: 1% | wind: 9 mph
MAY 1
54°F / 88°F
overcastrain: 1% | wind: 10 mph
MAY 2
54°F / 88°F
partly cloudyrain: 4% | wind: 11 mph
MAY 3
48°F / 86°F
slight rain showersrain: 19% | wind: 13 mph
MAY 4
46°F / 52°F
slight rain showersrain: 13% | wind: 16 mph
Water Temperature in San Luis Reservoir: General Trends and Swimming Opportunities
San Luis Reservoir is located in the state of California, in the county of Merced, at an elevation of 521 feet (159 meters) above sea level.
San Luis Reservoir is a medium lake. Its surface area is 20.0 sq mi (51.9 sq km). Typically versatile lakes with developed ecosystems; popular for water sports and tourism.
The water temperature in San Luis Reservoir varies throughout the year, ranging from 43°F (6°C) in March to 79°F (26°C) in August. The average annual water temperature of the lake is 63°F (17°C). The months when the average water temperature in San Luis Reservoir exceeds 68 degrees Fahrenheit (20°C) are July, August and September.
The nearest cities ans towns to San Luis Reservoir are: Los Banos, Gustine, Newman, Hollister, Ridgemark, Gilroy, South Dos Palos, San Juan Bautista, Dos Palos, San Martin in California.
Geographical Location of San Luis Reservoir
Nearby Lakes
Frequently Asked Questions About San Luis Reservoir and its Water Temperatures
What is the current water temperature in San Luis Reservoir?
The water temperature today in San Luis Reservoir is 58°F (14.6°C).
What is the water temperature in San Luis Reservoir during the summer months?
The average water temperature in San Luis Reservoir during the summer months is typically between 67°F to 74°F (19°C to 23°C), and it can reach up to 79°F (26°C) at its warmest. However, in some years, the temperature may exceed this range.
What is the water temperature in San Luis Reservoir in May?
The average water temperature in San Luis Reservoir in May ranges from 57°F to 66°F (14°C to 19°C).
What is the water temperature in San Luis Reservoir in September?
The average water temperature in San Luis Reservoir in September is typically between 66°F to 75°F (19°C to 24°C).
Where is San Luis Reservoir located?
San Luis Reservoir is located in the United States in the state of California, in the county of Merced, at an elevation of 521 feet (159 meters) above sea level. The surface area of the lake is 20.049 sq mi (51.93 sq km).
Is it possible to swim in San Luis Reservoir and what are the possibilities for this?
At the San Luis Reservoir in California, swimming is not allowed due to fluctuating water levels and strong winds. Other possibilities include boating, fishing, and waterskiing.
What are the coordinates of San Luis Reservoir?
San Luis Reservoir is located at coordinates 37.0440°N 121.1180°W.
Is Lake San Luis Reservoir a popular vacation spot among Americans?
San Luis Reservoir enjoys local popularity among the residents of State California, and nationally, it ranks in the top 10 percent of all lakes in the country.
What species of fish can be found in San Luis Reservoir?
San Luis Reservoir is home to fish species such as Striped bass (best caught in Spring, Fall), Largemouth bass (Spring, Fall), Smallmouth bass (Spring, Fall), Bluegill (Spring, Summer), Black crappie (Spring, Fall), Threadfin shad (Summer), Rainbow trout (Spring, Fall).