Marco Island in May.
If you don't mind heat, May is a steal. Prices drop by half, the Gulf is warm enough to swim at sunrise, and the beach feels private again.
May at a glance
- Avg high
- 88°F
- Avg low
- 70°F
- Gulf water
- 81°F
- Rainy days
- 5 days
- Crowds
- Moderate
- Beachfront /night
- $250–$450
Comparing months? See all twelve side by side.
Weather
Highs 85–88°F, lows in the low 70s. Water 78–81°F. The first short afternoon thunderstorms arrive the last two weeks — usually 30 minutes, then sunshine again.
Prices
Beachfront condos at $300–$500/night. The JW Marriott drops below $400 midweek. Memorial Day weekend is the one exception — book that early or skip it.
What to book first
- A morning boat tour — afternoon storms are real.
- A jet ski or kayak rental — the off‑season rates make it worth doing both.
- Memorial Day dinner if you're in town for it.
What to skip
Stone crab — season ended May 1. Order grouper or local snapper instead.
One local note
Lightning is no joke here. If you hear a rumble, get off the beach and out of the water. It clears in 30 minutes.
Quick answers
Common questions about May.
- What is the weather like on Marco Island in May?
- Marco Island in May averages highs around 88°F and lows around 70°F, with Gulf water temperatures near 81°F. Expect roughly 5 days of measurable rain across the month. Best value before the rain sets in.
- Is the water warm enough to swim on Marco Island in May?
- Gulf water off Marco Island sits around 81°F in May. 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 May?
- May crowd levels on Marco Island are moderate, and beachfront rentals typically run $250–$450 per night. Rates and availability move fast around holidays and weekends, so book earlier than you think you need to.