The highest day temperature in September 2025 was 86°F. The lowest night temperature was 70°F. The average values for day and night temperatures during September were 81.3°F и 77.1°F respectivly.

The average sea surface temperature in September 2025 for Sant Antoni de Portmany was 82.9°F. The maximum and minimum values were 79.8°F and 85.2°F respectively.

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

Precipitation total in September for Sant Antoni de Portmany is 0.7 in. It makes september the most rainy month of the year.

The average wind speed in September is 8.9 mph. It makes September one of the most windless months of the year for Sant Antoni de Portmany.

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 Sant Antoni de Portmany in September is 9.3 hours.