Lake Miramar — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Miramar, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Miramar today is 30.6°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating. 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 |
|---|---|---|---|
| JUL 14 | 27.8°C | 29.0°C | |
| JUL 15 | 30.2°C | 29.0°C | |
| JUL 16 | 30.2°C | 29.0°C | |
| JUL 17 | 30.2°C | 29.0°C | |
| JUL 18 | 30.3°C | 29.0°C | |
| JUL 19 | 30.3°C | 29.0°C | |
| JUL 20 | 30.1°C | 29.0°C | |
| JUL 21 | 30.1°C | 29.0°C | |
| JUL 22 | 29.0°C | 30.5°C | |
| JUL 23 | 29.0°C | 30.4°C | |
| JUL 24 | 29.0°C | 30.4°C | |
| JUL 25 | 29.0°C | 30.3°C | |
| JUL 26 | 29.0°C | 30.2°C | |
| JUL 27 | 29.0°C | 30.1°C | |
| JUL 28 | 29.0°C | 30.0°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 | 14°C | 24°C | 33°C |
| February | 14°C | 24°C | 33°C |
| March | 16°C | 25°C | 33°C |
| April | 17°C | 25°C | 32°C |
| May | 20°C | 26°C | 32°C |
| June | 21°C | 27°C | 32°C |
| July | 23°C | 29°C | 34°C |
| August | 28°C | 31°C | 33°C |
| September | 26°C | 30°C | 33°C |
| October | 24°C | 29°C | 33°C |
| November | 17°C | 25°C | 33°C |
| December | 16°C | 20°C | 23°C |
Lake Miramar: Water Temperature by Location
Lake Miramar: Weather Forecast
July 22
July 23
July 24
July 25
July 26
Location & Local Information
Lake Miramar (Miramar Reservoir) experiences modest seasonal variation in surface temperature driven by Southern California’s mild climate and local weather. Typical winter surface readings often fall in the 50–60°F range (10–15°C), spring warms to roughly 55–65°F (13–18°C), summer surface temperatures commonly reach about 65–75°F (18–24°C) and can occasionally climb into the upper 70s°F (around 25°C) during heat spells, while autumn generally sits between 60–70°F (16–21°C). These are approximate surface values: deeper water remains cooler year-round and the reservoir can develop temperature stratification, so water near boat docks or in shaded, deeper areas will feel significantly colder than sunny shallow edges.
Swimming in Lake Miramar is generally not permitted. The reservoir serves as part of the municipal water supply system and local rules prohibit immersion to protect water quality and public health; additional safety considerations include boat traffic, variable depths, and the absence of lifeguards. Recreational activities such as fishing, non-motorized boating, and shoreline walking are commonly allowed under city regulations, but intentional swimming is restricted to maintain potable water standards and reduce risks associated with uncontrolled water contact.