Fresno — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Fresno, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Fresno today is 20.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 12 | 23.2°C | 15.5°C | |
| OCT 13 | 23.2°C | 15.5°C | |
| OCT 14 | 23.0°C | 15.5°C | |
| OCT 15 | 21.9°C | 15.5°C | |
| OCT 16 | 21.7°C | 15.5°C | |
| OCT 17 | 20.9°C | 15.5°C | |
| OCT 18 | 20.7°C | 15.5°C | |
| OCT 19 | 20.5°C | 15.5°C | |
| OCT 20 | 15.5°C | 20.6°C | |
| OCT 21 | 15.5°C | 20.4°C | |
| OCT 22 | 15.5°C | 20.1°C | |
| OCT 23 | 15.5°C | 19.8°C | |
| OCT 24 | 15.5°C | 19.6°C | |
| OCT 25 | 15.5°C | 19.3°C | |
| OCT 26 | 15.5°C | 19.0°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 | 3°C | 7°C | 12°C |
| February | 3°C | 8°C | 13°C |
| March | 3°C | 10°C | 18°C |
| April | 5°C | 12°C | 19°C |
| May | 8°C | 15°C | 23°C |
| June | 14°C | 20°C | 26°C |
| July | 17°C | 24°C | 31°C |
| August | 17°C | 24°C | 32°C |
| September | 11°C | 20°C | 29°C |
| October | 8°C | 16°C | 23°C |
| November | 3°C | 11°C | 19°C |
| December | 7°C | 10°C | 13°C |
Fresno: Weather Forecast
October 20
October 21
October 22
October 23
October 24
Location & Local Information
Fresno, California, is situated near the San Joaquin River, which offers a variety of recreational opportunities, though swimming is not as common in the river compared to other water activities like fishing or boating. The water temperature in the San Joaquin River varies throughout the year, with the warmest temperatures typically occurring in late spring and summer. During the summer months, the water temperature generally ranges from 70°F (21°C) to 75°F (24°C). These temperatures can be relatively cool but still refreshing, especially considering the hot inland temperatures of Fresno, which often exceed 100°F (38°C). However, the current in certain sections of the river can be strong, which makes swimming a bit more challenging and potentially unsafe in some areas.
In the cooler months, the water temperature in the San Joaquin River drops considerably, typically ranging from 50°F (10°C) to 60°F (15°C). These cooler temperatures can make swimming uncomfortable, and most people tend to avoid entering the river during this time. The river’s flow can also be stronger in the winter due to seasonal runoff, further increasing the difficulty and risk associated with swimming.
Although the San Joaquin River may not be the primary destination for swimming, it is a popular location for other water-based activities such as kayaking, fishing, and wildlife observation. For those seeking a more controlled and comfortable swimming experience, Fresno has public pools that maintain a consistent water temperature year-round, typically between 78°F (26°C) and 82°F (28°C). These pools offer a more predictable environment for swimming, especially during the cooler months when the river is less inviting.