Perris Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Perris Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Perris Reservoir today is 26.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. 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 |
|---|---|---|---|
| SEP 14 | 27.8°C | 26.0°C | |
| SEP 15 | 27.7°C | 26.0°C | |
| SEP 16 | 27.7°C | 26.0°C | |
| SEP 17 | 27.6°C | 26.0°C | |
| SEP 18 | 27.6°C | 26.0°C | |
| SEP 19 | 27.3°C | 26.0°C | |
| SEP 20 | 26.6°C | 26.0°C | |
| SEP 21 | 26.9°C | 26.0°C | |
| SEP 22 | 26.0°C | 26.9°C | |
| SEP 23 | 26.0°C | 26.8°C | |
| SEP 24 | 26.0°C | 26.8°C | |
| SEP 25 | 26.0°C | 26.7°C | |
| SEP 26 | 26.0°C | 26.7°C | |
| SEP 27 | 26.0°C | 26.6°C | |
| SEP 28 | 26.0°C | 26.6°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 | 9°C | 13°C | 16°C |
| February | 6°C | 11°C | 17°C |
| March | 7°C | 14°C | 21°C |
| April | 15°C | 18°C | 22°C |
| May | 18°C | 22°C | 25°C |
| June | 20°C | 24°C | 28°C |
| July | 20°C | 26°C | 32°C |
| August | 21°C | 27°C | 33°C |
| September | 21°C | 26°C | 31°C |
| October | 21°C | 23°C | 26°C |
| November | 15°C | 20°C | 24°C |
| December | 13°C | 16°C | 20°C |
Perris Reservoir: Water Temperature by Location
Perris Reservoir: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Lake Perris tends to be warm in summer and cool in winter, with seasonal surface temperatures that vary roughly from about 50–60°F (10–16°C) in the coldest months to roughly 75–85°F (24–29°C) at the height of summer. Spring temperatures commonly rise into the low to mid 60s–70s °F (16–22°C) and autumn usually sees a gradual decline into the mid 60s–70s °F (18–24°C). These figures are approximate and can change with weather patterns, depth, and time of day; shallow areas warm faster than deeper pockets. Water that is in the 75–85°F (24–29°C) range is generally comfortable for recreational swimming, whereas temperatures below about 60°F (16°C) feel brisk and may limit time in the water for many swimmers.
Swimming at Lake Perris is allowed in designated recreational areas when park rules and public-health conditions permit; managers restrict access at times to protect visitor safety and the reservoir’s functions. Designated swim beaches are typically chosen because they keep swimmers away from boat traffic, intakes, and other hazards, and because lifeguards or safety measures may be provided seasonally. Visitors should heed posted advisories, as access can be limited for water-quality issues, low water levels, or other safety concerns.