Cozumel Weather in September

Cozumel in September sees very high daytime temperatures of 30°C (86°F) and nighttime lows of 27°C (81°F). Rainfall is fairly high this month at around 193 mm (7.6 in), so pack a rain jacket to stay dry.

Rainfall in Cozumel in September

Typically around 15 days of rainfall are expected, averaging 193 mm (7.6 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Cozumel in September

In September, Cozumel sees very high temperatures, with highs of 30°C (86°F). Nights drop to around 27°C (81°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With overnight lows of 27°C (81°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.

Sunshine in Cozumel in September

Expect a lot of sunshine this month, with about 202 hours of sun. These sunny conditions add to the overall experience.

Average water temperature in September

At 29°C (84°F), the water is very warm, more like a heated pool than the sea. Great for those who like warm water, though some may find it less refreshing on a hot day.

September in Cozumel has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.