The highest day temperature in September 2025 was 100°F. The lowest night temperature was 76°F. The average values for day and night temperatures during September were 95.5°F и 80.1°F respectivly.

The average sea surface temperature in September 2025 for Manzanillo was 91.4°F. The maximum and minimum values were 90.6°F and 92.2°F respectively.

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

Precipitation total in September for Manzanillo is 3.5 in. It makes september one of the most rainy months of the year.

The average wind speed in September is 5.1 mph. It makes September one of the most windless months of the year for Manzanillo.

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 Manzanillo in September is 7.5 hours.