Search for cities, countries, lakes and rivers
San Francisco
Water Temperature in the Pacific Ocean in San Francisco, California: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in San Francisco in California, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in San Francisco
53°F
TODAY
55°F
YESTERDAY
54°F
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Pacific Ocean in San Francisco is 12.5°F. The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used.
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 for Pacific Ocean in San Francisco Over the Last 30 Days
The water temperature in San Francisco today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.
According to our forecast, the sea temperature in San Francisco will remain nearly unchanged in the coming days, its value will be 55°F.
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 across United States to enhance accuracy.
Water temperature data for San Francisco and nearby towns and resorts is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| May 12 | 54°F | 56°F | |
| May 13 | 55°F | 56°F | |
| May 14 | 55°F | 57°F | |
| May 15 | 54°F | 57°F | |
| May 16 | 54°F | 56°F | |
| May 17 | 54°F | 57°F | |
| May 18 | 55°F | 58°F | |
| May 19 | 53°F | 56°F | |
| May 20 | 58°F | 54°F | |
| May 21 | 57°F | 54°F | |
| May 22 | 55°F | 54°F | |
| May 23 | 57°F | 55°F | |
| May 24 | 55°F | 55°F | |
| May 25 | 57°F | 55°F | |
| May 26 | 55°F | 55°F | |
| May 27 | 55°F | 55°F |
Sea Temperature in San Francisco Throughout the Year
Throughout the year, the sea temperature in San Francisco never exceeds 64°F (18°C).
Below is the annual chart of sea temperature changes in the Pacific Ocean in San Francisco.
January
| Minimum | Average | Maximum |
|---|---|---|
| 50°F | 55°F | 59°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 53°F | 57°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 54°F | 59°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 54°F | 59°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 55°F | 61°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 55°F | 64°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 50°F | 57°F | 64°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 50°F | 58°F | 66°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 59°F | 66°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 59°F | 66°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 58°F | 64°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 55°F | 61°F |
Monthly Water Temperature Histogram for Pacific Ocean in San Francisco
You can explore detailed data on how the water temperature in San Francisco varies each month:
What Beaches Are There In and Around San Francisco?
Baker Beach
Baker Beach is a 4-stars sandy beach, is located directly in San Francisco. For those who prefer clothing-optional beaches, Baker Beach is a designated nudist beach. There is parking. There are restrooms. There are cafés. Baker Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
China Beach
China Beach is a 3-stars sandy beach, is located directly in San Francisco. There is parking. There are restrooms. There are cafés. China Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. It is suitable for surfing.
Marshall Beach
Marshall Beach is a 2-stars sandy beach, is located directly in San Francisco. For those who prefer clothing-optional beaches, Marshall Beach is a designated nudist beach. There is parking.
Mile Rock Beach / Lands End Beach
Mile Rock Beach / Lands End Beach is a 3-stars sandy beach, located in a 2 km (1 miles) radius of San Francisco. For those who prefer clothing-optional beaches, Mile Rock Beach / Lands End Beach is a designated nudist beach. There is parking. There are restrooms. There are cafés.
Crissy Field Beach - West Bluff Beach
Crissy Field Beach - West Bluff Beach is a 4-stars sandy beach, located in a 2 km (1 miles) radius of San Francisco. There is parking. There are restrooms. There are cafés. Crissy Field Beach - West Bluff Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Sutro Baths
Sutro Baths is a 2-stars sandy beach, located in a 3 km (2 miles) radius of San Francisco. There is parking. There are cafés.
Crissy Field - East Beach
Crissy Field - East Beach is a 4-stars sandy beach, located in a 3 km (2 miles) radius of San Francisco. There is parking. There are restrooms. There are cafés. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Seal Rocks Beach
Seal Rocks Beach is a 3-stars sandy beach, located in a 3 km (2 miles) radius of San Francisco. There is parking. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Kirby Cove Beach
Kirby Cove Beach is a 2-stars sandy beach, located in a 4 km (2 miles) radius of San Francisco. There is parking. There are restrooms.
Challange Beach
Challange Beach is a 3-stars sandy beach, located in a 4 km (2 miles) radius of San Francisco. There are lifeguards on the beach. For those who prefer clothing-optional beaches, Challange Beach is a designated nudist beach. There is parking.
Marina Green Beach
Marina Green Beach is a 3-stars sandy beach, located in a 4 km (2 miles) radius of San Francisco. There is parking. There are restrooms. There are cafés. Marina Green Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. It is suitable for surfing.
Ocean Beach
Ocean Beach is a 3-stars sandy beach, located in a 4 km (2 miles) radius of San Francisco. There is parking. There are restrooms. There are cafés.
Aquatic Park Beach
Aquatic Park Beach is a 3-stars sandy beach, located in a 5 km (3 miles) radius of San Francisco. There is parking. There are restrooms. There are cafés. Aquatic Park Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. There is a shark hazard on the beach. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Fort Baker Beach
Fort Baker Beach is a 3-stars sandy beach, located in a 5 km (3 miles) radius of San Francisco. There is parking. There are restrooms. Fort Baker Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish.
Jessens Beach
Jessens Beach is a 3-stars sandy beach, located in a 5 km (3 miles) radius of San Francisco. There is parking. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Point Bonita Lighthouse Beach
Point Bonita Lighthouse Beach is a 2-stars sandy beach, located in a 5 km (3 miles) radius of San Francisco. There is parking. There are restrooms.
Black Sands Beach
Black Sands Beach is a 3-stars sandy beach, located in a 5 km (3 miles) radius of San Francisco. For those who prefer clothing-optional beaches, Black Sands Beach is a designated nudist beach. There is parking. There are restrooms. Black Sands Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Tiffany Beach
Tiffany Beach is a 2-stars sandy beach, located in a 6 km (4 miles) radius of San Francisco. There is parking.
South Rodeo Beach
South Rodeo Beach is a 2-stars sandy beach, located in a 6 km (4 miles) radius of San Francisco. For those who prefer clothing-optional beaches, South Rodeo Beach is a designated nudist beach. There is parking.
Rodeo Beach
Rodeo Beach is a 3-stars sandy beach, located in a 6 km (4 miles) radius of San Francisco. There is parking. There are restrooms. It is suitable for surfing.
San Francisco Weather
MAY 20
48°F / 59°F
clear skyhumidity: 74% | wind: 3 mph
MAY 21
48°F / 59°F
few clouds: 11-25%humidity: 79% | wind: 4 mph
MAY 22
50°F / 57°F
few clouds: 11-25%humidity: 82% | wind: 4 mph
MAY 23
46°F / 55°F
few clouds: 11-25%humidity: 86% | wind: 4 mph
Sea Temperature in the Pacific Ocean in San Francisco: General Trends and Swimming Opportunities
The coastal region of California, United States, exhibits a Mediterranean climate characterized by mild, wet winters and warm, dry summers. Marked by moderate temperatures year-round, it experiences more fog and significantly cooler temperatures than the inland areas due to proximity to the Pacific Ocean.
San Francisco is located in North America in the Northern Hemisphere at a latitude of 38 degrees, along the shores of the Pacific Ocean. San Francisco lies within the California in United States.
The average annual daytime air temperature in San Francisco is 66°F (19°C), with the average nighttime temperature being 52°F (11°C). The highest average daily temperature occurs in September, reaching 73°F (23°C), while the lowest is in January at 61°F (16°C). As for nighttime temperatures, the minimum average temperature of 44°F (7°C) is recorded in January, and the maximum is in August, reaching 57°F (14°C).
According to historical data, San Francisco experiences 56 rainy days per year, which accounts for 15 percent of all days in the year. On average, there are 5 rainy days each month. The wettest month is February, with 9 rainy days and 5.5 inches (139 mm) of precipitation, while the driest month is July, which typically has 0 rainy days and only 0.0 inches (1 mm) of precipitation.
The average annual water temperature in Pacific Ocean in San Francisco is 55°F (13°C). In June, the water reaches its lowest point of the year at 46°F (8°C), while in August, it peaks at 66°F (19°C). In San Francisco, the water temperature in the Pacific Ocean never consistently reaches a comfortable level for swimming in any month.
Geographical Location of San Francisco
Nearby Cities
Frequently Asked Questions About San Francisco and its Water Temperatures
What is the current sea temperature in San Francisco?
The water temperature today in the Pacific Ocean in San Francisco is 53°F (11.7°C).
In which months is the water temperature in San Francisco comfortable for swimming?
It cannot be guaranteed that the water temperature in San Francisco will be comfortable for swimming in any month of the year.
What is the water temperature in San Francisco during the winter?
The water temperature in the Pacific Ocean in San Francisco during the winter ranges from 48°F to 61°F (9°C to 16°C).
What is the water temperature in San Francisco during the spring?
The water temperature in the Pacific Ocean in San Francisco during the spring ranges from 48°F to 61°F (9°C to 16°C).
What is the water temperature in San Francisco during the summer?
The water temperature in the Pacific Ocean in San Francisco during the summer ranges from 46°F to 66°F (8°C to 19°C).
What is the water temperature in San Francisco during the fall?
The water temperature in the Pacific Ocean in San Francisco during the fall ranges from 52°F to 66°F (11°C to 19°C).
Is it possible to swim in the sea in San Francisco at any time of the year?
In San Francisco, the Pacific Ocean is quite cold, and swimming is almost impossible as the water temperature never reaches 70°F (21°C).
Is San Francisco a popular tourist destination for beach vacations?
San Francisco a fairly popular beach destination, offering good conditions for swimming and relaxation, with a steady flow of tourists, especially during peak seasons.
What sea temperatures can I expect in San Francisco in the next month?
In June, the water temperature in the Pacific Ocean in San Francisco will range between 46°F (8°C) and 64°F (18°C)