Fontana water temp
This data the coastal Fontana water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Current water temperature in Fontana
Water temperature in Fontana today is 84.2°F. Based on our historical data over a period of ten years, the warmest water in this day in Fontana was recorded in 2022 and was 89.6°F, and the coldest 80.6°F. Water temperature in Fontana is expected to drop to 79.2°F in the next 10 days. September average water temperature in Fontana is 79.7°F, the minimum temperature is 66.2°F, and the maximum is 91.4°F.
The swimming season in Fontana lasts from May to October. During those months, Fontana water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Fontana in winter reaches 54.7°F, in spring 61.9°F, in summer the average temperature rises to 79.3°F, and in autumn it is 71.8°F.
Fontana water temperature now
| September 5, 2025 |
|---|
| today temp |
| 84.2°F |
| September 4, 2025 |
|---|
| yesterday temp |
| 84.2°F |
Current temperature and weather
Data in a table show Fontana temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Fontana.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | |  |
| 76.3°F | 72°F | 72.5°F | 81.3°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| | | |
| 93.9°F | 95.4°F | 86.4°F | 80.4°F |
You may also be interested in other sections of our site for Fontana: Sunrise and Sunset
Fontana water temperature by month
These figures shows the average, minimum and maximum monthly water temperature in Fontana. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Fontana on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
| Month | Avr | Min | Max | |
|---|---|---|---|---|
| January | 53.1°F | 46.4°F | 62.6°F | cold |
| Water temperature in Fontana in January | ||||
| February | 54.7°F | 46.4°F | 62.6°F | cold |
| Water temperature in Fontana in February | ||||
| March | 55.6°F | 37.4°F | 73.4°F | cold |
| Water temperature in Fontana in March | ||||
| April | 62.2°F | 51.8°F | 73.4°F | cold |
| Water temperature in Fontana in April | ||||
| May | 68°F | 60.8°F | 75.2°F | warm |
| Water temperature in Fontana in May | ||||
| June | 74.1°F | 64.4°F | 86°F | warm |
| Water temperature in Fontana in June | ||||
| July | 80.8°F | 71.6°F | 89.6°F | hot |
| Water temperature in Fontana in July | ||||
| August | 82.9°F | 75.2°F | 87.8°F | hot |
| Water temperature in Fontana in August | ||||
| September | 79.7°F | 66.2°F | 91.4°F | hot |
| Water temperature in Fontana in September | ||||
| October | 72.7°F | 60.8°F | 84.2°F | warm |
| Water temperature in Fontana in October | ||||
| November | 62.8°F | 53.6°F | 71.6°F | cold |
| Water temperature in Fontana in November | ||||
| December | 56.5°F | 48.2°F | 66.2°F | cold |
| Water temperature in Fontana in December | ||||
Chart monthly average water temperature in Fontana
