The highest day temperature in October 2025 was 88°F. The lowest night temperature was 76°F. The average values for day and night temperatures during October were 86.4°F и 78.9°F respectivly.

The average sea surface temperature in October 2025 for Port of San Jose was 88.7°F. The maximum and minimum values were 87.6°F and 89.4°F respectively.

Most of the days in October are cloudy but you can also expect sunny or gloomy days.

Precipitation total in October for Port of San Jose is 3.0 in. It makes october one of the most rainy months of the year.

The average wind speed in October is 5.5 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Port of San Jose in October is 5.0 hours.