Isabella Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Isabella Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Isabella Lake today is 23.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 | 22.4°C | 26.0°C | |
| JUN 4 | 22.4°C | 26.0°C | |
| JUN 5 | 23.1°C | 26.0°C | |
| JUN 6 | 23.2°C | 26.0°C | |
| JUN 7 | 23.5°C | 26.0°C | |
| JUN 8 | 23.7°C | 26.0°C | |
| JUN 11 | 26.0°C | 23.8°C | |
| JUN 12 | 26.0°C | 23.9°C | |
| JUN 13 | 26.0°C | 24.0°C | |
| JUN 14 | 26.0°C | 24.2°C | |
| JUN 15 | 26.0°C | 24.3°C | |
| JUN 16 | 26.0°C | 24.4°C | |
| JUN 17 | 26.0°C | 24.5°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 | 7°C | 10°C | 13°C |
| February | 6°C | 11°C | 14°C |
| March | 10°C | 14°C | 19°C |
| April | 12°C | 17°C | 22°C |
| May | 15°C | 23°C | 30°C |
| June | 22°C | 26°C | 30°C |
| July | 25°C | 29°C | 33°C |
| August | 25°C | 29°C | 33°C |
| September | 23°C | 28°C | 33°C |
| October | 18°C | 23°C | 28°C |
| November | 12°C | 17°C | 21°C |
| December | 8°C | 11°C | 14°C |
Isabella Lake: Water Temperature by Location
Isabella Lake: Weather Forecast
June 9
June 10
June 11
June 12
Location & Local Information
Lake Isabella, a reservoir in Kern County, California, exhibits noticeable seasonal variation in surface water temperature. In summer months (roughly June through September) surface temperatures commonly range from about 68 to 80°F (20 to 27°C), warming enough for many visitors to find swimming comfortable. During spring and fall (roughly March–May and October–November) temperatures typically sit between about 50 and 67°F (10 to 19°C), which feels brisk to cold for prolonged immersion. In winter (December–February) surface readings often fall into the 40 to 50°F range (4 to 10°C), where cold-water shock and hypothermia become real concerns for swimmers.
Recreational swimming is generally permitted at Lake Isabella and people do swim there, but conditions and safety considerations shape when and where it is advisable. There are large boating areas, variable shoreline conditions, submerged hazards and occasional water-quality or algae advisories, and lifeguard coverage is not widespread, so swimmers should choose sheltered spots away from boat traffic, heed local advisories, and be mindful that even in warm air temperatures the water can still be cold enough to limit safe swim time.