The highest day temperature in September 2025 was 95°F. The lowest night temperature was 82°F. The average values for day and night temperatures during September were 90.3°F и 84.2°F respectivly.

The average sea surface temperature in September 2025 for Boca del Rio was 90.3°F. The maximum and minimum values were 89.0°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 Boca del Rio is 4.1 in. It makes september one of the most rainy months of the year.

The average wind speed in September is 7.7 mph. It makes September one of the most windless months of the year for Boca del Rio.

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 Boca del Rio in September is 7.1 hours.