The highest day temperature in September 2025 was 89°F. The lowest night temperature was 77°F. The average values for day and night temperatures during September were 86.7°F и 78.6°F respectivly.

The average sea surface temperature in September 2025 for Acapulco was 90.3°F. The maximum and minimum values were 89.6°F and 91.6°F respectively.

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

Precipitation total in September for Acapulco is 11.3 in. It makes september the most rainy month of the year.

The average wind speed in September is 6.0 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 Acapulco in September is 6.9 hours.