Marco Island, Florida
Weather, Things to Do, and Where to Stay
Book Direct & SaveSeptember is the deepest off-season month on Marco Island, with average highs of 90°F and overnight lows around 75°F. The Gulf water stays warm at 85–87°F, but frequent afternoon thunderstorms and peak hurricane risk make weather unpredictable. Expect the lowest rates and fewest crowds of the year.
Air Temperature
Low 90s°F
Gulf Water
85–87°F
Crowds
Deep off-season — very quiet
Frequent afternoon thunderstorms. Hurricane risk is highest in September — travel insurance is essential.
Is it worth visiting? For the right traveler — yes. No crowds, lowest prices, most authentic local experience. Plan around the weather and have travel insurance.
Excellent inshore fishing. Redfish and snook are very active.
Still warm, clear water with excellent visibility.
Morning paddles through the 10,000 Islands are lush and wildlife-rich.
High dolphin activity in September. Guests at Riverside Relaxation see them from the lanai regularly.
Easiest month to snag a waterfront table at sunset with no wait.
September has the lowest rates of the year. 63 five-star reviews, private lanai with dolphin views, resort pools. Book direct at riversiderelaxation.com.
Book Direct & SaveLowest rates of the year. Warm water. No crowds.
Book Direct & SaveSeptember is for savvy travelers who want the lowest rates and fewest crowds of the year. Highs reach the low 90s°F and the Gulf water stays warm at 85–87°F. Beaches are nearly empty and restaurants have no waits. The trade-offs are frequent afternoon storms and the highest hurricane risk of the year. Travel insurance is essential.
Yes — September has the highest hurricane risk of the year. Historically, more hurricanes affect Southwest Florida in September than any other month. The National Hurricane Center (nhc.noaa.gov) provides reliable tracking. Travel insurance that covers hurricane disruptions is absolutely essential for a September visit. Monitor weather forecasts closely.
Yes — Gulf water temperatures in September remain warm at 85–87°F, perfect for swimming and snorkeling. The water is among the warmest of the year. Plan water activities for the morning, as afternoon thunderstorms are frequent. September offers excellent warm-water swimming for visitors who plan around the weather.
September typically has the lowest vacation rental rates of the year, alongside August. Availability is excellent and properties often offer their deepest discounts. Booking direct at riversiderelaxation.com saves an additional 20–30% over platform fees. September is the best value month for budget-conscious travelers willing to navigate hurricane season.
Last updated: October 2026