New Bullards Bar Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in New Bullards Bar Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in New Bullards Bar Reservoir today is 18°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 7 | 19.5°C | 19.5°C | |
| OCT 8 | 19.3°C | 19.5°C | |
| OCT 9 | 19.2°C | 19.5°C | |
| OCT 10 | 18.9°C | 19.5°C | |
| OCT 11 | 18.9°C | 19.5°C | |
| OCT 12 | 19.8°C | 19.5°C | |
| OCT 13 | 19.4°C | 19.5°C | |
| OCT 14 | 17.4°C | 19.5°C | |
| OCT 15 | 19.5°C | 18.1°C | |
| OCT 16 | 19.5°C | 18.2°C | |
| OCT 17 | 19.5°C | 18.2°C | |
| OCT 18 | 19.5°C | 18.3°C | |
| OCT 19 | 19.5°C | 18.4°C | |
| OCT 20 | 19.5°C | 18.5°C | |
| OCT 21 | 19.5°C | 18.5°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 | 6°C | 9°C | 11°C |
| February | 5°C | 8°C | 10°C |
| March | 5°C | 11°C | 18°C |
| April | 8°C | 12°C | 16°C |
| May | 13°C | 18°C | 22°C |
| June | 18°C | 22°C | 26°C |
| July | 22°C | 26°C | 29°C |
| August | 23°C | 26°C | 30°C |
| September | 21°C | 24°C | 26°C |
| October | 16°C | 20°C | 23°C |
| November | 10°C | 14°C | 18°C |
| December | 8°C | 12°C | 14°C |
New Bullards Bar Reservoir: Water Temperature by Location
New Bullards Bar Reservoir: Weather Forecast
October 15
October 16
October 17
October 18
October 19
October 20
Location & Local Information
New Bullards Bar Reservoir is a deep Sierra foothill impoundment, so water temperatures vary a lot by season and depth. Surface temperatures in winter commonly sit around the low 40s to low 50s °F (about 4–11 °C). In spring the surface typically warms to roughly 45–60 °F (7–15 °C) as snowmelt and sun increase inflow. Peak summer surface readings often range from about 60–75 °F (16–24 °C), though on very hot, calm afternoons small bays can warm a few degrees higher. Because the reservoir is deep and fed by cold river flow and releases from near the bottom, deeper water remains considerably colder year-round, and abrupt thermoclines can cause sudden temperature drops below the surface.
Swimming is generally possible but treated as a higher-risk activity. There are no widespread lifeguarded beaches, water levels and currents change with hydroelectric releases, and boat traffic is common, so people swim at their own risk in unstaffed areas. The combination of cold water, steep drop-offs, and potential cold-water shock makes cautious preparation important: enter gradually, avoid long swims alone, and wear flotation if venturing far from shore. Local rules or seasonal restrictions may apply to specific access points, so visitors should heed posted signage and safety guidance.