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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Historical averages and packing recommendations for your September visit to Cozumel.
"Wettest month, hurricane season"
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Cozumel is one of the most visited cruise destinations in the world, and for good reason. The island sits in the heart of the Mesoamerican Barrier Reef — the second-largest coral reef system on Earth — making it a snorkeling and diving paradise. Beyond the water, visitors enjoy colorful San Miguel town, Mayan ruins, and white-sand beach clubs.
Cozumel in September is warm and sunny, with average highs around 90°F and lows that rarely dip below 77°F. September sees roughly 16 rainy days, so waterproof layers and flexible plans are wise. Showers are often short-lived but can be intense. Wettest month, hurricane season
It's the shoulder season in Cozumel: fewer crowds than the winter peak, but the heat and humidity are at their highest. A light rain jacket and early-morning excursions will serve you well. Pack reef-safe SPF 50+ sunscreen, a hat, and breathable fabrics — the sun at 90°F is intense, especially near the water.
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The average high temperature in Cozumel during September is 90°F, with a low of 77°F.
Cozumel typically sees 16 days of rain in September. Wettest month, hurricane season
For a September cruise to Cozumel, you should pack lightweight, breathable clothing, swimwear, and sun protection.