Turlock Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Turlock Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Turlock Lake today is 19.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 | 19.9°C | 19.0°C | |
| OCT 17 | 19.4°C | 19.0°C | |
| OCT 18 | 19.6°C | 19.0°C | |
| OCT 19 | 19.6°C | 19.0°C | |
| OCT 20 | 19.7°C | 19.0°C | |
| OCT 21 | 20.0°C | 19.0°C | |
| OCT 22 | 19.4°C | 19.0°C | |
| OCT 24 | 19.0°C | 19.1°C | |
| OCT 25 | 19.0°C | 19.1°C | |
| OCT 26 | 19.0°C | 19.1°C | |
| OCT 27 | 19.0°C | 19.1°C | |
| OCT 28 | 19.0°C | 19.1°C | |
| OCT 29 | 19.0°C | 19.1°C | |
| OCT 30 | 19.0°C | 19.1°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 | 8°C | 11°C | 14°C |
| March | 10°C | 15°C | 20°C |
| April | 15°C | 19°C | 22°C |
| May | 15°C | 19°C | 24°C |
| June | 19°C | 23°C | 27°C |
| July | 20°C | 24°C | 29°C |
| August | 19°C | 24°C | 30°C |
| September | 19°C | 23°C | 27°C |
| October | 16°C | 19°C | 22°C |
| November | 12°C | 16°C | 20°C |
| December | 9°C | 12°C | 15°C |
Turlock Lake: Water Temperature by Location
Turlock Lake: Weather Forecast
October 24
October 25
October 26
October 27
October 28
Location & Local Information
Turlock Lake, a reservoir in California’s Central Valley, experiences noticeable seasonal swings in surface temperature. In winter the water commonly sits in the mid‑40s to mid‑50s °F (about 7–13 °C), and in spring it warms to roughly 50–65 °F (10–18 °C). Peak summer surface temperatures often reach the low to mid‑70s up to the low‑80s °F (approximately 21–29 °C) in warm years, while fall usually sees a gradual cooling into the 60s–70s °F range (16–24 °C). These figures are general surface averages; deeper water stays colder year‑round and temperatures can vary with weather, inflow, and reservoir level.
Swimming at Turlock Lake is possible but comes with caveats. There are areas where people swim and boat, but the lake typically lacks lifeguards and has hazards such as cold water layers, sudden drop‑offs, boat traffic, and occasional changes in flow related to irrigation and reservoir operations. Water quality can also fluctuate, so local rules, posted signs, and any seasonal advisories should be checked before entering. For safety, recreational swimmers are advised to stay in designated day‑use areas, wear a life jacket when near boats, and be mindful of cold shock and currents even on warm days.