The highest day temperature in September 2025 was 82°F. The lowest night temperature was 50°F. The average values for day and night temperatures during September were 69.8°F и 59.4°F respectivly.

The average sea surface temperature in September 2025 for Garopaba was 66.8°F. The maximum and minimum values were 65.2°F and 69.2°F respectively.

You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in September for Garopaba is 1.4 in. It makes september one of the least rainy months of the year.

The average wind speed in September 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 Garopaba in September is 6.2 hours.