The highest day temperature in October 2025 was 73°F. The lowest night temperature was 56°F. The average values for day and night temperatures during October were 67.3°F и 61.1°F respectivly.

The average sea surface temperature in October 2025 for Diano Marina was 71.7°F. The maximum and minimum values were 68.6°F and 74.6°F respectively.

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

Precipitation total in October for Diano Marina is 2.5 in. It makes october one of the most rainy months of the year.

The average wind speed in October is 7.7 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 Diano Marina in October is 7.6 hours.