Los Banos Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Los Banos Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Los Banos Reservoir today is 22.2°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 |
|---|---|---|---|
| OCT 16 | 23.0°C | 22.0°C | |
| OCT 17 | 22.3°C | 22.0°C | |
| OCT 18 | 22.2°C | 22.0°C | |
| OCT 19 | 21.7°C | 22.0°C | |
| OCT 20 | 22.1°C | 22.0°C | |
| OCT 21 | 21.9°C | 22.0°C | |
| OCT 22 | 22.1°C | 22.0°C | |
| OCT 23 | 22.2°C | 22.0°C | |
| OCT 24 | 22.0°C | 22.2°C | |
| OCT 25 | 22.0°C | 22.2°C | |
| OCT 26 | 22.0°C | 22.2°C | |
| OCT 27 | 22.0°C | 22.2°C | |
| OCT 28 | 22.0°C | 22.2°C | |
| OCT 29 | 22.0°C | 22.1°C | |
| OCT 30 | 22.0°C | 22.1°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 | 6°C | 9°C | 13°C |
| February | 9°C | 12°C | 15°C |
| March | 11°C | 15°C | 20°C |
| April | 14°C | 18°C | 21°C |
| May | 16°C | 22°C | 27°C |
| June | 20°C | 26°C | 30°C |
| July | 22°C | 26°C | 30°C |
| August | 23°C | 27°C | 32°C |
| September | 22°C | 24°C | 27°C |
| October | 19°C | 22°C | 25°C |
| November | 12°C | 17°C | 20°C |
| December | 10°C | 13°C | 16°C |
Los Banos Reservoir: Water Temperature by Location
Los Banos Reservoir: Weather Forecast
October 23
October 24
October 25
October 26
October 27
October 28
Location & Local Information
Los Banos Reservoir experiences a broad seasonal swing in surface water temperatures. In winter months the reservoir commonly stays cool, often in the mid-40s to mid-50s °F (about 7–13 °C), while spring brings a gradual rise into the upper 50s to mid-60s °F (14–18 °C). By summer, surface temperatures typically warm to the mid-60s up into the low 80s °F (18–28 °C) depending on air heat and wind, and on hot, calm days localized surface layers can reach the upper 70s or low 80s °F (25–28 °C). Autumn sees a steady decline as cooler nights mix the water and bring temperatures back toward the spring range. Subsurface temperatures remain cooler than surface readings and change more slowly with the seasons.
Swimming can occur at Los Banos Reservoir in areas where public access is allowed, but it is not a managed, lifeguarded swim beach and local rules, signage, or seasonal closures may restrict water contact. Because the reservoir is used for irrigation and wildlife habitat, water quality can vary; agricultural runoff, turbidity, and occasional algal blooms can make swimming inadvisable at times. Visitors should check current advisories, respect posted restrictions, and be aware that cooler shoulder-season temperatures increase the risk of cold-water shock even if surface air is warm.