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San Francisco in March

Find out everything about the water temperature in San Francisco in March. Average, minimum and maximum recorded temperatures as well as daily temperature in March for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in March
Minimum:

49.3 °F

Average:

55.0 °F

Maximum:

59.0 °F

Sea water temperature in San Francisco in March

In the city of San Francisco, the month of March is too cold for swimming. The minimum recorded temperature during this month was 49.3°F on March 4, 2023, with an average temperature being 55.0°F and a maximum temperature reaching 59.0°F on March 16, 2015.

Swing in the water of such temperature might lead to potential hypothermia within just a few minutes. In March, the sea temperature remains relatively stable. The average temperature stays close to 55.0°F throughout the month, with minimal changes.
Date 10 years average 2024 2023
Mar 1 54.1°F 56.2°F 49.8°F
Mar 2 53.9°F 56.2°F 49.9°F
Mar 3 53.9°F 55.6°F 49.5°F
Mar 4 53.9°F 55.3°F 49.3°F
Mar 5 53.9°F 54.0°F 49.9°F
Mar 6 54.1°F 54.5°F 50.2°F
Mar 7 54.2°F 55.6°F 49.5°F
Mar 8 54.3°F 55.3°F 49.6°F
Mar 9 54.3°F 55.0°F 50.1°F
Mar 10 54.5°F 55.4°F 50.0°F
Mar 11 54.4°F 55.9°F 50.6°F
Mar 12 54.7°F 56.2°F 50.7°F
Mar 13 54.9°F 56.2°F 51.0°F
Mar 14 55.2°F 56.1°F 52.7°F
Mar 15 55.4°F 56.6°F 53.2°F
Mar 16 55.3°F 55.9°F 52.4°F
Mar 17 55.1°F 55.0°F 50.7°F
Mar 18 55.3°F 55.9°F 52.0°F
Mar 19 55.3°F 56.4°F 52.7°F
Mar 20 55.6°F 56.7°F 53.0°F
Mar 21 55.6°F 56.0°F 53.1°F
Mar 22 55.5°F 55.3°F 53.2°F
Mar 23 55.7°F 55.5°F 53.5°F
Mar 24 56.0°F 57.0°F 53.9°F
Mar 25 56.0°F 57.2°F 54.2°F
Mar 26 55.9°F 56.6°F 54.0°F
Mar 27 55.9°F 57.0°F 53.2°F
Mar 28 55.9°F 56.8°F 52.8°F
Mar 29 55.7°F 56.4°F 52.5°F
Mar 30 56.0°F 56.2°F 52.7°F
Mar 31 56.0°F 56.0°F 52.6°F

Sea water temperature in San Francisco by month

In an average year, San Francisco offers no days when the water temperature is warm enough to swim comfortably. The warmest water in San Francisco was recorded on August 28, 2023, reaching a 67.4°F. While the coldest temperature occurred on March 4, 2023, dipping to 49.3°F. The average readings by season are 53.7°F in Winter, 56.2°F in Spring, 60.9°F in Summer, and 60.7°F in Autumn. The average temperature in March is slightly warmer than February's average of 53.9°F. And in April, the temperature is expected to rise further, potentially reaching an average of 56.5°F.

Popular neighboring cities and resorts

City Water temperature* Distance**
Oakland 55.5°F 8mi
Redwood City 65.5°F 22mi
San Jose 63.2°F 42mi

* current water temperature in this city

** straight line distance from San Francisco