Cozumel Weather in September
Average highs run from 30°C on September 1 to 29°C on September 30, and lows from 28°C to 27°C. Normal precipitation for the month is 180 mm over about 24 wet days.
September day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
September at a glance
- Average high
- 30°C
- Average low
- 27°C
- Precipitation
- 180 mm
- Reanalysis high
- 32°CSep 3, 1995
- Reanalysis low
- 25°CSep 30, 2001
- Daylight
- 12 h 31 min to 11 h 58 min
- Cloud cover
- 57%
- Humidity
- 82%
- Dew point
- 25°C
- Wind
- 11.9 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 30°C | 28°C | 32°C 1995 | 26°C 2003 | 80% |
| Sep 2 | 30°C | 28°C | 32°C 1995 | 26°C 2003 | 79% |
| Sep 3 | 30°C | 28°C | 32°C 1995 | 26°C 2013 | 79% |
| Sep 4 | 30°C | 28°C | 31°C 1995 | 26°C 1993 | 79% |
| Sep 5 | 30°C | 28°C | 31°C 2009 | 26°C 1993 | 79% |
| Sep 6 | 30°C | 27°C | 31°C 2009 | 26°C 2002 | 81% |
| Sep 7 | 30°C | 27°C | 31°C 2015 | 27°C 2000 | 81% |
| Sep 8 | 30°C | 27°C | 32°C 2019 | 26°C 1991 | 82% |
| Sep 9 | 30°C | 28°C | 32°C 2008 | 26°C 1991 | 81% |
| Sep 10 | 30°C | 27°C | 31°C 2015 | 26°C 2013 | 81% |
| Sep 11 | 30°C | 27°C | 31°C 2015 | 26°C 2000 | 81% |
| Sep 12 | 30°C | 27°C | 31°C 2004 | 26°C 2001 | 82% |
| Sep 13 | 30°C | 27°C | 31°C 2010 | 26°C 2001 | 82% |
| Sep 14 | 30°C | 27°C | 31°C 1996 | 26°C 2013 | 83% |
| Sep 15 | 30°C | 27°C | 31°C 2019 | 26°C 2013 | 84% |
| Sep 16 | 30°C | 27°C | 31°C 2009 | 26°C 2013 | 86% |
| Sep 17 | 30°C | 27°C | 32°C 2009 | 26°C 1997 | 87% |
| Sep 18 | 30°C | 27°C | 31°C 2019 | 25°C 1997 | 88% |
| Sep 19 | 29°C | 27°C | 31°C 1995 | 26°C 1991 | 88% |
| Sep 20 | 29°C | 27°C | 31°C 1996 | 26°C 1991 | 88% |
| Sep 21 | 29°C | 27°C | 31°C 1995 | 26°C 1999 | 87% |
| Sep 22 | 29°C | 27°C | 32°C 1995 | 26°C 2007 | 88% |
| Sep 23 | 29°C | 27°C | 31°C 2019 | 26°C 1994 | 88% |
| Sep 24 | 29°C | 27°C | 31°C 2019 | 26°C 1999 | 88% |
| Sep 25 | 29°C | 27°C | 31°C 2020 | 26°C 1999 | 88% |
| Sep 26 | 29°C | 27°C | 30°C 2005 | 26°C 2004 | 88% |
| Sep 27 | 29°C | 27°C | 31°C 2019 | 26°C 2001 | 88% |
| Sep 28 | 29°C | 27°C | 31°C 2019 | 26°C 2001 | 87% |
| Sep 29 | 29°C | 27°C | 31°C 2019 | 25°C 2001 | 86% |
| Sep 30 | 29°C | 27°C | 31°C 2009 | 25°C 2001 | 84% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EST).
- September 1
- sunrise 6:32 AM, sunset 7:03 PM
- September 30
- sunrise 6:39 AM, sunset 6:37 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.