Plan your trip
September on the island
Average high
90°
Average low
74°
Rain
7.4 in
Gulf water
86°F
How it feels: Hot and steamy, with a storm most afternoons. Beach early, shade or pool after lunch.
Good to know in September
- Atlantic hurricane season (June 1 to November 30). Watch the forecast and consider trip insurance. source
- Sea turtle nesting season: lights out on the beach at night; remove beach gear and fill holes daily. source
- The wettest months. Expect afternoon thunderstorms; plan beach time for mornings. source
- Short breaks: a few local spots close for a week or so for cleaning. Swordfish Grill in Cortez closed Sept 14 to 23 in 2026, so check before you drive over. source
We don't have verified crowd numbers by month, so we don't guess. School holidays usually mean busier beaches and bridges. See what to book ahead.