San Bernardino — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in San Bernardino, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in San Bernardino today is 18.8°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 |
|---|---|---|---|
| SEP 25 | 21.7°C | 20.5°C | |
| SEP 26 | 21.7°C | 20.5°C | |
| SEP 27 | 22.0°C | 20.5°C | |
| SEP 28 | 22.1°C | 20.5°C | |
| SEP 29 | 21.9°C | 20.5°C | |
| SEP 30 | 22.0°C | 20.5°C | |
| OCT 1 | 21.6°C | 16.0°C | |
| OCT 2 | 18.6°C | 16.0°C | |
| OCT 3 | 16.0°C | 18.7°C | |
| OCT 4 | 16.0°C | 18.5°C | |
| OCT 5 | 16.0°C | 18.4°C | |
| OCT 6 | 16.0°C | 18.2°C | |
| OCT 7 | 16.0°C | 18.1°C | |
| OCT 8 | 16.0°C | 18.0°C | |
| OCT 9 | 16.0°C | 17.8°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 | 3°C | 9°C | 16°C |
| February | 3°C | 9°C | 16°C |
| March | 3°C | 11°C | 20°C |
| April | 5°C | 13°C | 20°C |
| May | 8°C | 16°C | 24°C |
| June | 14°C | 20°C | 27°C |
| July | 17°C | 24°C | 32°C |
| August | 17°C | 24°C | 32°C |
| September | 11°C | 21°C | 30°C |
| October | 8°C | 16°C | 24°C |
| November | 3°C | 13°C | 22°C |
| December | 11°C | 14°C | 18°C |
San Bernardino: Weather Forecast
October 3
October 4
October 5
October 6
October 7
October 8
Location & Local Information
San Bernardino, California, is located near the Santa Ana River, which flows through the region. While the river offers opportunities for activities like fishing, hiking, and bird watching, it is generally not a popular location for swimming due to its water temperature and current conditions. During the summer months, the water temperature in the Santa Ana River typically ranges from 60°F (16°C) to 70°F (21°C). Although this can be refreshing on a hot day, the cooler temperatures, combined with the river's strong current, make it less ideal for casual swimmers.
The river’s water temperature drops further during the winter months, usually ranging from 50°F (10°C) to 60°F (15°C). These colder temperatures make swimming even less appealing. Additionally, the Santa Ana River can be fast-moving in some areas, especially after rainfall or during higher water flow periods, which can present a safety hazard for swimmers. While the river is scenic and offers a peaceful environment for other outdoor activities, such as kayaking and tubing, it's not typically a place for extended swimming.
For more suitable swimming options, residents and visitors to San Bernardino can head to local public pools or nearby lakes. Public pools in the area usually maintain temperatures between 78°F (26°C) and 82°F (28°C), making them more comfortable for swimming. Additionally, nearby reservoirs like Lake Arrowhead and Big Bear Lake offer warmer waters, especially in the summer, making them more popular destinations for swimming, boating, and fishing. These alternative locations provide a safer and more enjoyable swimming experience compared to the Santa Ana River.