The highest day temperature in September 2025 was 73°F. The lowest night temperature was 42°F. The average values for day and night temperatures during September were 64.3°F и 47.5°F respectivly.

The average sea surface temperature in September 2025 for Vina del Mar was 55.7°F. The maximum and minimum values were 54.4°F and 56.8°F respectively.

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

Precipitation total in September for Vina del Mar is 0.4 in.

The average wind speed in September is 7.6 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 Vina del Mar in September is 9.2 hours.