The highest day temperature in September 2025 was 86°F. The lowest night temperature was 77°F. The average values for day and night temperatures during September were 82.2°F и 80.3°F respectivly.

The average sea surface temperature in September 2025 for Mellieha was 84.0°F. The maximum and minimum values were 82.4°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 Mellieha is 0.9 in.

The average wind speed in September is 10.8 mph. It makes September one of the most windless months of the year for Mellieha.

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 Mellieha in September is 10.4 hours.