Marco Island in September.
The quietest month of the year. Kids are back in school, snowbirds haven't returned, and hurricane risk peaks. If you're a flexible solo or couple traveler, the deals are real.
- Avg high
- 89°F
- Avg low
- 74°F
- Gulf water
- 87°F
- Rainy days
- 15 days
- Crowds
- Lowest
- Beachfront /night
- $180–$380
Comparing months? See all twelve side by side.
Weather
Highs 89–91°F, lows 74°F. Water still 85°F. Hurricane season peaks September 10. Real risk of a storm changing your plans — especially the first three weeks.
Prices
Tied with August for the cheapest of the year. Many restaurants close for two weeks of summer break — call ahead.
What to book first
- Travel insurance with a hurricane clause.
- A refundable beachfront rental.
- Sunset cruises — the storm skies in September make for the most dramatic photos of the year.
What to skip
Multi‑week trips this month. Keep it to 4–5 nights so you can shift the dates if needed.
One local note
When locals say "shoulder season is the best," they almost always mean late September into early October — once the active tropics calm down and rates haven't bumped yet.
Common questions about September.
- What is the weather like on Marco Island in September?
- Marco Island in September averages highs around 89°F and lows around 74°F, with Gulf water temperatures near 87°F. Expect roughly 15 days of measurable rain across the month. Peak hurricane season. Lowest prices of the year.
- Is the water warm enough to swim on Marco Island in September?
- Gulf water off Marco Island sits around 87°F in September. Most visitors find anything above 75°F comfortable for a long swim; in the low 70s the water is swimmable but bracing for the first few minutes, and locals tend to wait for the afternoon.
- How busy and how expensive is Marco Island in September?
- September crowd levels on Marco Island are lowest, and beachfront rentals typically run $180–$380 per night. Rates and availability move fast around holidays and weekends, so book earlier than you think you need to.