Over the year, the temperature typically varies from 69°F/20.5°C to 91°F/33°C
The temperature rarely falls below 63°F/17.5°C or rises above 93°F/34°C
Warm Season - early May to mid-September
Average daily high temperature above 89°F/32°C
Hottest day of the year around August 9, with average high of 91°F/33°C and low of 78°F/25.5°C
Cool Season - early December to late February
Average daily high temperature below 83°F/28.5°C
Coolest day of the year around February 4, with average low of 69°F/20.5°C and high of 82°F/28°C
Other dates outside of Warm and Cool seasons may be considered "moderate" weather
Rainy Season
Rain is most likely late September
about 41% of days
Highest monthly average rainfall is October
Dry Season
Rain is least likely mid-March
about 12% of days
Lowest average monthly rainfall is March
Rain is usually brief and often limited to night, and averages about 45" (114 cm) per year
The state of Quintana Roo observes UTC -5 year-round
Officially this is Mexico Zona Sureste
This means no Daylight Saving Time (DST) changes are observed
It's the same as Eastern Standard Time (EST) or Central Daylight Time (CDT) year-round
Avoid using US time zones such as EST or CDT because US times zones follow DST
Up-to-date devices set the time correctly using "Cancún"
"Chetumal" is the capitol of Quintana Roo and systems that include it (Windows 10) should set the time correctly
"Bogota" works correctly as it's also UTC -5 and does not observe DST
It will usually be light, or getting light, at 6:30-7 AM and dark, or getting dark at 6:30-7 PM
Day length varies by less than 2 ½ hours over the course of the year
Sunset in the summer is much earlier than northerners expect, 7:32 PM at the latest (end June to early July)
Sunset in the winter is much later than northerners expect, never before 6:05 PM (late November)
Sunrise is from to 6:06 AM to 7:26 AM
Another way to think of this is that sunrise and sunset are around 6:45 AM or PM +/- 45 minutes