The weather in Fort Walton Beach in September is very hot. The average temperatures are between 75°F and 86°F, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Fort Walton Beach. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Fort Walton Beach in September 2025.
If you’re planning to visit Fort Walton Beach in the near future, we highly recommend that you review the 14 day weather forecast for Fort Walton Beach before you arrive.