Cozumel Temperature by Month

The average annual maximum temperature in Cozumel, Quintana Roo, Mexico is 29°C (84°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Cozumel compares to cities worldwide.

The temperature in Cozumel remains steady throughout the year, providing a consistently very warm climate. Maximum daytime temperatures range from a very warm 30°C (86°F) in August to a comfortable 27°C (81°F) in January. Nights are mild year-round, with lows ranging from 27°C (81°F) in August to 24°C (75°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Cozumel by month:

The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. August, the warmest month, gets 220 hours of sunshine.

The chart below shows the average temperature throughout the year:

Cozumel's average annual maximum temperature is 29°C (84°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Cozumel this rarely lasts long on the ground.

For more on Cozumel's weather, including monthly rainfall, sunshine hours, and humidity, visit our Cozumel climate page.