San Vicente Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in San Vicente Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in San Vicente Reservoir today is 26.6°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 | 27.4°C | 28.6°C | |
| SEP 15 | 27.8°C | 28.6°C | |
| SEP 16 | 26.8°C | 28.6°C | |
| SEP 17 | 27.1°C | 28.6°C | |
| SEP 18 | 26.6°C | 28.6°C | |
| SEP 19 | 27.3°C | 28.6°C | |
| SEP 20 | 27.4°C | 28.6°C | |
| SEP 21 | 26.6°C | 28.6°C | |
| SEP 22 | 28.6°C | 26.7°C | |
| SEP 23 | 28.6°C | 26.8°C | |
| SEP 24 | 28.6°C | 26.9°C | |
| SEP 25 | 28.6°C | 27.0°C | |
| SEP 26 | 28.6°C | 27.1°C | |
| SEP 27 | 28.6°C | 27.2°C | |
| SEP 28 | 28.6°C | 27.3°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 | 10°C | 14°C | 19°C |
| February | 11°C | 15°C | 19°C |
| March | 14°C | 18°C | 22°C |
| April | 16°C | 22°C | 27°C |
| May | 20°C | 24°C | 27°C |
| June | 22°C | 25°C | 27°C |
| July | 24°C | 28°C | 32°C |
| August | 27°C | 30°C | 34°C |
| September | 26°C | 29°C | 32°C |
| October | 23°C | 26°C | 28°C |
| November | 17°C | 22°C | 26°C |
| December | 15°C | 17°C | 20°C |
San Vicente Reservoir: Water Temperature by Location
San Vicente Reservoir: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
San Vicente Reservoir, often called Lake San Vicente in San Diego County, experiences moderate water temperatures that change with the seasons. Surface water in winter typically ranges around 50–55°F (10–13°C), with spring and fall commonly in the mid‑50s to mid‑60s°F (13–18°C). During summer months the surface can warm to roughly 65–75°F (18–24°C) on sunny days, though temperatures can be cooler earlier in the morning and substantially colder below the surface, where deeper water stays several degrees lower year‑round. These figures are approximate averages and vary with weather, inflow, and reservoir level.
Swimming at San Vicente is generally restricted because the reservoir serves as part of the regional water supply and is subject to public‑health and safety regulations. Restrictions are intended to protect drinking water quality, reduce risks from submerged hazards and boat traffic, and comply with local agency rules; lifeguards and designated swim areas are not typically provided. Visitors who want to enter the water should check current local regulations and posted notices, and consider alternative supervised swimming venues in the region if open‑water access is prohibited.