The highest day temperature in September 2026 was 86°F. The lowest night temperature was 72°F. The average values for day and night temperatures during September were 78.4°F и 76.3°F respectivly.

The average sea surface temperature in September 2026 for Costa Calma was 78.1°F. The maximum and minimum values were 76.2°F and 79.8°F respectively.

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

Precipitation total in September for Costa Calma is 0.1 in. This value is relatively stable throughout the year.

The average wind speed in September is 12.8 mph. It makes September one of the most windless months of the year for Costa Calma.

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 Costa Calma in September is 9.6 hours.