Cozumel climate
Cozumel (Quintana Roo, Mexico) has a tropical savanna (dry summer) climate (Köppen As). The average temperature over the year is 27 °C80 °F, and about 1,282 mm50 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Cozumel climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2679 | 2374 | 2576 | 612.4 |
| Feb | 2780 | 2474 | 2577 | 471.8 |
| Mar | 2781 | 2475 | 2678 | 421.7 |
| Apr | 2883 | 2577 | 2780 | 421.7 |
| May | 2984 | 2679 | 2882 | 1003.9 |
| Jun | 2984 | 2780 | 2882 | 1777.0 |
| Jul | 2985 | 2781 | 2883 | 963.8 |
| Aug | 3086 | 2781 | 2984 | 1254.9 |
| Sep | 2985 | 2781 | 2883 | 1696.7 |
| Oct | 2983 | 2679 | 2781 | 2248.8 |
| Nov | 2781 | 2577 | 2679 | 1295.1 |
| Dec | 2780 | 2475 | 2578 | 692.7 |
| Year | 3086 | 2374 | 2780 | 1,28250 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 76% | 49% | 4.1 | 11:01 |
| Feb | 76% | 38% | 5.0 | 11:27 |
| Mar | 74% | 35% | 6.0 | 11:59 |
| Apr | 75% | 34% | 6.6 | 12:36 |
| May | 77% | 45% | 6.4 | 13:06 |
| Jun | 82% | 60% | 5.8 | 13:22 |
| Jul | 81% | 51% | 6.4 | 13:16 |
| Aug | 80% | 53% | 6.3 | 12:49 |
| Sep | 82% | 58% | 5.6 | 12:14 |
| Oct | 82% | 58% | 4.7 | 11:38 |
| Nov | 79% | 52% | 4.2 | 11:08 |
| Dec | 78% | 47% | 3.9 | 10:54 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Cozumel is like
The warmest month is August, with an average high of 30 °C86 °F and a low of 27 °C81 °F. The coldest is January, when highs average 26 °C79 °F and lows 23 °C74 °F. Seasonal differences are small — just 4.1 °C7.3 °F between the warmest and the coolest month.
It is wet, with about 1,282 mm50 in of precipitation per year. The wettest three-month stretch is September–November, which brings 41% of the annual total. The wettest month is October (224 mm8.8 in), the driest is April (42 mm1.7 in).
Relative humidity ranges from 74% in March to 82% in October. The clearest skies (lowest average cloud amount, 34%) are typical of April. Average wind speed near the ground ranges from 9 km/h (6 mph) in September to 13 km/h (8 mph) in March. Daylight lasts from about 10.9 hours in December to 13.4 hours in June.
Best time to visit Cozumel
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December–April: average highs of 26 °C79 °F to 28 °C83 °F with 42 mm1.7 in to 69 mm2.7 in of precipitation per month.
The most challenging month is October, which is very wet (224 mm8.8 in) and humid (82% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Cozumel
- Wetter months (June, August–November) — highs 2781 to 30 °C86 °F, lows 2577 to 27 °C81 °F, about 165 mm6.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Drier months (December–May, July) — highs 2679 to 29 °C85 °F, lows 2374 to 27 °C81 °F, about 65 mm2.6 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Cozumel compares
Compared with Playa del Carmen, about 20 km to the northwest, Cozumel has practically the same average temperature and receives a similar amount of precipitation.
Of the 96 places in Mexico covered by World Climates, Cozumel is the 10th warmest by annual mean temperature and the 18th wettest by annual precipitation. See all of them on the Mexico climate page.
Places in other countries with the most similar temperature and rainfall pattern: Carolina (Puerto Rico, Aw), San Juan (Puerto Rico, Aw) and Roseau (Dominica, Am).
Nearby places
- Playa del Carmen 20 km · 27 °C80 °F · 1,282 mm50 in
- Cancún 76 km · 26 °C80 °F · 1,250 mm49 in
- Chetumal 262 km · 27 °C80 °F · 1,392 mm55 in
- Mérida 284 km · 27 °C80 °F · 1,045 mm41 in
- Campeche 380 km · 27 °C80 °F · 996 mm39 in
- Pinar del Río 398 km · 26 °C79 °F · 813 mm32 in
- Belmopan 409 km · 26 °C78 °F · 1,644 mm65 in
- La Ceiba 527 km · 27 °C81 °F · 2,069 mm81 in
Frequently asked questions
What is the warmest month in Cozumel?
August is the warmest month in Cozumel, with an average high of 30 °C (86 °F) and an average low of 27 °C (81 °F).
What is the coldest month in Cozumel?
January is the coldest month, with an average high of 26 °C (79 °F) and an average low of 23 °C (74 °F).
When does it rain the most in Cozumel?
October is the wettest month with about 224 mm (8.8 in) of precipitation; April is the driest with about 42 mm (1.7 in).
What is the best time to visit Cozumel?
Judging by long-term averages, the most comfortable months are December–April.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.