
This data the coastal San Rafael 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.
Water temperature in San Rafael today is 17°C. Based on our historical data over a period of ten years, the warmest water in this day in San Rafael was recorded in 2022 and was 26°C, and the coldest was recorded in 2024 at 20°C. Water temperature in San Rafael is expected to rise to 23°C in the next 10 days. December average water temperature in San Rafael is 22.8°C, the minimum temperature is 17°C, and the maximum is 28°C.
The swimming season in San Rafael lasts from November to March. During those months, San Rafael water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in San Rafael in winter reaches 8.5°C, in spring 17.1°C, in summer the average temperature rises to 23.6°C, and in autumn it is 16.7°C.
| 10 November 2025 |
|---|
| today temp |
| 17°C |
| 9 November 2025 |
|---|
| yesterday temp |
| 17°C |
Data in a table show San Rafael temperature today (1 December 2025). For more information and forecast for a few days, go to the weather forecast San Rafael.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
| 16.2°C | 15.7°C | 14.8°C | 18.9°C |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 22.5°C | 26°C | 26.7°C | 23.3°C |
You may also be interested in other sections of our site for San Rafael: Sunrise and Sunset
These figures shows the average, minimum and maximum monthly water temperature in San Rafael. 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 San Rafael 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 | 24.8°C | 21°C | 30°C | warm |
| Water temperature in San Rafael in January | ||||
| February | 23.2°C | 20°C | 29°C | warm |
| Water temperature in San Rafael in February | ||||
| March | 21.1°C | 3°C | 27°C | warm |
| Water temperature in San Rafael in March | ||||
| April | 16.5°C | 11°C | 23°C | cold |
| Water temperature in San Rafael in April | ||||
| May | 12.4°C | 6°C | 19°C | cold |
| Water temperature in San Rafael in May | ||||
| June | 8.4°C | 4°C | 15°C | cold |
| Water temperature in San Rafael in June | ||||
| July | 7.2°C | 4°C | 13°C | cold |
| Water temperature in San Rafael in July | ||||
| August | 9.9°C | 5°C | 15°C | cold |
| Water temperature in San Rafael in August | ||||
| September | 13.5°C | 9°C | 17°C | cold |
| Water temperature in San Rafael in September | ||||
| October | 17.2°C | 11°C | 24°C | cold |
| Water temperature in San Rafael in October | ||||
| November | 20.6°C | 14°C | 27°C | warm |
| Water temperature in San Rafael in November | ||||
| December | 22.8°C | 17°C | 28°C | warm |
| Water temperature in San Rafael in December | ||||
