How hot is Cancun in September?

Cancun averages 32C daytime highs in September with a sea temperature around 29C.

Head-to-head for families

Cancun or Cozumel in September for families?

Families score Cancun 8.9 out of 10 in September against 7.4 for Cozumel, mainly on nightlife and food scene.

Kids in tow changes the maths: pool time, short transfers, food everyone will eat and day trips that survive a nap schedule.

Quick verdict

Cancun for nightlife, food scene, families. Cozumel for easy and safe.

Cancun, Mexico

8.9/10

32C days, 29C sea, 210mm rain

Cozumel, Mexico

7.4/10

32C days, 210mm rain

Rated for families

Out of five on each criterion. Highlighted rows are the ones that matter most to you.

Cancun and Cozumel rated out of five on each criterion
What matters	Cancun	Cozumel
NightlifeBars, clubs and late-night energy
BeachesSand quality, water clarity and swimming
Food sceneRange, quality and local character
FamiliesKid-friendly resorts, pools and day trips
RomanceCouples, honeymoons and adults-only stays
Things to doExcursions, culture and day trips
All-inclusiveChoice and value of all-inclusive resorts
Value for moneyWhat a typical day actually costs
Easy and safeComfort for first-time visitors
Exploring soloHow easy it is to get out on your own
Flight accessDirect routes and flight time from North America

Side by side in September

Cancun compared with Cozumel
Factor	Cancun	Cozumel
Daytime high	32C	32C
Rainfall	210mm	210mm
Sea temperature	29C, swimmable	Varies by season
Beach quality	Wide white sand, calm Caribbean	4 out of 5
Getting there	under 5 hours from most of North America	Ferry from Playa del Carmen
Typical cost	Cheapest window of the year. The same resort can cost half its January rate.	Mid range
Between beach days	Chichen Itza, Tulum, cenotes, Isla Mujeres, reef snorkelling	Best diving in Mexico, Calm west-coast water

What is on in Cancun in September

Mexican Independence Day on 15 and 16 September, the biggest party of the year
Cheapest month in Cancun by a wide margin
Hurricane season peak, so buy flexible rates

Crowds. One of the quietest months. Ruins, cenotes and beach clubs feel almost private.

Prices. Cheapest window of the year. The same resort can cost half its January rate.

Seaweed. Sargassum can appear on some east-facing beaches. Isla Mujeres north beach and the cenotes are the reliable backup.

Storms. This is the statistical peak of hurricane season. Book refundable rates and travel cover, then enjoy the lowest prices of the year.

Dated plans and community meetups are listed on the Cancun events calendar.

Book Cancun for September

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Where Cozumel genuinely wins

Best diving in Mexico
Calm west-coast water
Relaxed pace

Pick Cozumel if best diving in mexico is the single thing you care most about on this trip.

What catches people out

Limited nightlife
Cruise-day crowds downtown
Fewer restaurants and hotels

The Cancun edge

Cancun puts you an easy day trip from Cozumel's reefs while giving you nightlife, ruins and cenotes the island cannot.

Cancun is the rare beach destination that also works as a base. The airport is one of the busiest in Latin America, the transfer to your hotel takes twenty minutes, and within two hours you can be swimming in a cenote, climbing a Mayan pyramid, snorkelling the second largest reef on the planet, or eating cochinita pibil in a downtown market for the price of a coffee elsewhere. That combination is why we keep building these comparisons and keep reaching the same conclusion.

Cancun wins for you? Start here.

Compare hotelsAll-inclusive, adults-only and boutique Explore activitiesRuins, cenotes, reef and boat days Find your areaHotel Zone, downtown or Isla Mujeres Build your tripFree day-by-day planner

Cancun or Cozumel for your kind of trip

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