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 30.2°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 |
|---|---|---|---|
| AUG 8 | 31.0°C | 24.3°C | |
| AUG 9 | 30.9°C | 24.3°C | |
| AUG 10 | 31.5°C | 24.3°C | |
| AUG 11 | 31.5°C | 24.3°C | |
| AUG 12 | 31.4°C | 24.3°C | |
| AUG 13 | 31.4°C | 24.3°C | |
| AUG 14 | 31.2°C | 24.3°C | |
| AUG 15 | 31.3°C | 24.3°C | |
| AUG 16 | 24.3°C | 29.9°C | |
| AUG 17 | 24.3°C | 29.6°C | |
| AUG 18 | 24.3°C | 29.3°C | |
| AUG 19 | 24.3°C | 29.0°C | |
| AUG 20 | 24.3°C | 28.7°C | |
| AUG 21 | 24.3°C | 28.4°C | |
| AUG 22 | 24.3°C | 28.1°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 | 18°C | 25°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
August 16
August 17
August 18
August 19
August 20
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.