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San Diego in January

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

57.0 °F

Average:

59.6 °F

Maximum:

61.9 °F

Sea water temperature in San Diego in January

In the city of San Diego, the month of January is too cold for swimming. The minimum recorded temperature during this month was 57.0°F on January 28, 2023, with an average temperature being 59.6°F and a maximum temperature reaching 61.9°F on January 20, 2015.

Swing in the water of such temperature might lead to potential hypothermia within just a few minutes. In January, the sea temperature remains relatively stable. The average temperature stays close to 59.6°F throughout the month, with minimal changes.
Date 10 years average 2024 2023
Jan 1 59.9°F 61.5°F 58.8°F
Jan 2 59.9°F 61.6°F 58.9°F
Jan 3 59.8°F 61.7°F 58.6°F
Jan 4 59.8°F 61.6°F 58.5°F
Jan 5 59.8°F 61.4°F 58.7°F
Jan 6 59.7°F 61.1°F 58.7°F
Jan 7 59.7°F 60.7°F 58.8°F
Jan 8 59.7°F 60.2°F 58.8°F
Jan 9 59.7°F 60.1°F 58.8°F
Jan 10 59.7°F 59.9°F 58.7°F
Jan 11 59.6°F 60.1°F 58.8°F
Jan 12 59.6°F 59.8°F 58.9°F
Jan 13 59.5°F 58.7°F 59.0°F
Jan 14 59.4°F 58.2°F 58.9°F
Jan 15 59.4°F 57.8°F 58.7°F
Jan 16 59.3°F 57.6°F 58.9°F
Jan 17 59.4°F 57.7°F 59.0°F
Jan 18 59.6°F 58.1°F 58.8°F
Jan 19 59.6°F 58.2°F 58.4°F
Jan 20 59.6°F 58.4°F 58.4°F
Jan 21 59.5°F 58.3°F 58.4°F
Jan 22 59.7°F 58.9°F 58.1°F
Jan 23 59.5°F 58.6°F 57.6°F
Jan 24 59.6°F 59.7°F 57.7°F
Jan 25 59.4°F 59.4°F 57.4°F
Jan 26 59.5°F 59.7°F 57.2°F
Jan 27 59.5°F 60.0°F 57.1°F
Jan 28 59.3°F 59.7°F 57.0°F
Jan 29 59.4°F 59.7°F 57.1°F
Jan 30 59.4°F 60.2°F 57.2°F
Jan 31 59.5°F 59.9°F 57.1°F

Sea water temperature in San Diego by month

In an average year, San Diego offers no days when the water temperature is warm enough to swim comfortably. The warmest water in San Diego was recorded on August 7, 2018, reaching a 75.8°F. While the coldest temperature occurred on February 25, 2023, dipping to 55.9°F. The average readings by season are 60.1°F in Winter, 61.8°F in Spring, 68.6°F in Summer, and 66.8°F in Autumn. January's average temperature is a slight drop from December's average of 61.2°F. In February, the temperature is expected to decrease further, potentially averaging around 59.5°F.

Popular neighboring cities and resorts

City Water temperature* Distance**
Tijuana 62.7°F 17mi
Oceanside 64.9°F 35mi
Laguna Beach 62.6°F 67mi

* current water temperature in this city

** straight line distance from San Diego