The highest day temperature in September 2023 was 88°F. The lowest night temperature was 79°F. The average values for day and night temperatures during September were 85.9°F и 81.5°F respectivly.

The average sea surface temperature in September 2023 for Ilha de Santiago was 86.0°F. The maximum and minimum values were 85.6°F and 86.4°F respectively.

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

Precipitation total in September for Ilha de Santiago is 2.6 in. It makes september the most rainy month of the year.

The average wind speed in September is 10.0 mph. It makes September one of the most windless months of the year for Ilha de Santiago.

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 Ilha de Santiago in September is 7.2 hours.