Weather in San Diego: October
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Average day temperature: | 74.2°F |
| Average night temperature: | 63.6°F | |
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Sea water temperature: | 66.8°F |
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Number of sunny days: | 18 days |
| Day length: | 10.9 - 11.8 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.2 in. | |
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forecast
| San Diego |
temperature
| San Diego |
Air temperature in October, °F
The highest day temperature during October of 2025 was 86°F. At the same time the lowest night temperature was 54°F. Daily and nightly averages during October were 73.3°F and 60.1°F.
Sea water temperature in San Diego in October, °F
The average sea water temperature in October of 2025 was 65.8°F. The highest and lowest sea temperatures during the month were 67.6°F and 63.1°F.
Mostly all days in October are sunny but cloudy days are also possible.
Precipitation total in October, in.
Precipitation total value in San Diego in October is 0.1 in. Other months of the year show relatively similar values.
The average wind speed value in October is 5.6 mph It makes October one of the least windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in October is: 7.1.
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San Diego on a weather map
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