Cancún Weather in September

Cancún in September sees very high daytime temperatures of 30°C (86°F) and nighttime lows of 26°C (79°F). Rainfall is fairly high this month at around 192 mm (7.6 in), so pack a rain jacket to stay dry.

Rainfall in Cancún in September

Typically, you can expect about 14 days of rain this month, with 192 mm (7.6 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Cancún in September

In September, Cancún sees very high temperatures, with highs of 30°C (86°F). Nights drop to around 26°C (79°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With lows of 26°C (79°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.

Sunshine in Cancún in September

Expect sunny days throughout the month, with an estimated 195 hours of sunshine. This makes it a pleasant time to visit Cancún.

Average water temperature in September

With water at 29°C (84°F), conditions are warm and calm. Perfect for those who like tropical water temperatures, though it won't cool you down much.

September in Cancún can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.