Cancun weather
in September
“Mild and bright — an underrated time to visit.”
Roughly 22 rainy days across the month, on average.
In september, Cancun settles into its warmer, more generous mood. The city keeps a different pulse than in summer or midwinter, and travellers who arrive with the right expectations are rewarded.
Days average around 30°C (87°F), cooling to 26°C after sunset. Expect meaningful rain — some 22 wet days across the month. Pack accordingly and let the weather choose your afternoons. Long days of sunshine reward early starts.
These figures are climatological averages, drawn from a decade of daily records via the Open-Meteo Archive — not a forecast. But they are honest, and they are the sort of thing a good travel guide ought to tell you before you book the flight.
What to pack for Cancun in September
- •Breathable cotton or linen, and a broad-brimmed hat
- •A compact travel umbrella — one you'll actually carry
- •Reef-safe sunscreen and polarised sunglasses
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for Cancun in September
- →Quick-dry travel shirtAmazon · shop this
- →UPF sun hatAmazon · shop this
- →Packable rain jacketAmazon · shop this
- →Compact travel umbrellaAmazon · shop this
- →Waterproof dry bagAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
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Where to stay in Cancun
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Cancun in September — FAQ
Q01Is September a good time to visit Cancun?
Is September a good time to visit Cancun?
It is a challenging month — you may want to consider another time of year. In September, Cancun averages a high of 30°C (87°F) and a low of 26°C (78°F), with 181mm of rainfall across roughly 22 rainy days.
Q02What is the average temperature in Cancun in September?
What is the average temperature in Cancun in September?
The average high temperature in Cancun during September is 30°C (87°F), with an average low of 26°C (78°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does Cancun have in September?
How many rainy days does Cancun have in September?
Cancun averages approximately 22 rainy days in September, with a total monthly rainfall of about 181mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Cancun in September?
What should I pack for Cancun in September?
For Cancun in September, pack light, breathable clothing (cotton or linen), a compact umbrella or waterproof jacket, sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is Cancun in September?
How crowded is Cancun in September?
Tourist crowds in Cancun during September are typically moderate — shoulder season, a sweet spot between crowds and weather. Consider this when planning accommodation — prices track crowd levels closely.