Cancún in September
September in Cancún brings highs around 92°F (33°C), lows near 75°F and about 14 rainy days. The sun sets around 6:51 pm. The sea is about 85°F (29°C). It's off season for sightseeing: hot and quieter.
Photo: Luka Peternel, CC BY-SA 4.0
What September is good for in Cancún
Each activity rated for September's weather and sea.
SnorkelingGood in September
Scuba divingGood in September
Cooking classesAny month
Boat toursFair in September
Catamaran toursFair in September
Sunset cruisesFair in September
Helicopter toursOff season in September
Zipline toursOff season in September
Day tripsOff season in September
ATV toursOff season in September
Food toursOff season in September
Private toursOff season in September
September next to August and October
| Month | August | September | October |
|---|---|---|---|
| High | 94°F (34°C) | 92°F (33°C) | 89°F (32°C) |
| Low | 76°F (25°C) | 75°F (24°C) | 74°F (23°C) |
| Rainy days | 10 | 14 | 15 |
| Sea | 85°F | 85°F | 84°F |
| Sunset | 7:18 pm | 6:51 pm | 6:23 pm |
| Daylight | 12 h 52 min | 12 h 17 min | 11 h 40 min |
Averages for Cancún, 1991–2020; sunrise and sunset on the 15th. Cancún water temperature by month.
Tours in Cancún
Guided tour to Chichén Itzá from CANCÚN.From $24View 
Waverunner in Cancun without TransportationFrom $80View 
Cancun speedboat and snorkel tour: shared speedboatFrom $56View
Tours from Viator. Good Outing may earn a commission when you book, at no cost to you.
Questions
Is September a good time to visit Cancún?
It's off season for sightseeing: hot and quieter. The most comfortable months overall are January, February, March and December.
How hot is Cancún in September?
Average highs are about 92°F (33°C) and lows about 75°F (24°C).
Does it rain much in Cancún in September?
September averages 14 rainy days, against 15 in the wettest month.
How warm is the sea in Cancún in September?
About 85°F (29°C). Warm enough for long swims and snorkeling.
