The highest day temperature in September 2023 was 104°F. The lowest night temperature was 76°F. The average values for day and night temperatures during September were 96.0°F и 84.9°F respectivly.

The average sea surface temperature in September 2023 for Chetumal was 91.5°F. The maximum and minimum values were 90.4°F and 92.6°F respectively.

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

Precipitation total in September for Chetumal is 4.6 in. It makes september one of the most rainy months of the year.

The average wind speed in September is 6.5 mph. It makes September one of the most windless months of the year for Chetumal.

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 Chetumal in September is 6.3 hours.