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Contents
- The climate of Cozumel
- The Best Time to Visit Cozumel
- The Worst Time to Visit Cozumel
- Spring Weather in Cozumel
- Summer Weather in Cozumel
- Autumn Weather in Cozumel
- Winter Weather in Cozumel
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average humidity
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average UV index
Palm trees and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico
The climate of Cozumel
Situated in the tropical region, Cozumel, Mexico, displays a climate classified under the Köppen system as Aw, known as Tropical Wet and Dry or Savanna. The year-round weather patterns conform to a distinctly tropical rhythm characterized by wet and dry seasons and a slight fluctuation in temperatures.
Monthly average temperatures range from 28.6°C (83.5°F), beginning and ending the year, to an annual peak of 33°C (91.4°F), achievable in August. An examination of the low temperatures unveils a similar trend, ascending from 19.4°C (66.9°F) at the start of the year to a high of 23.8°C (74.8°F) in June. This progression, typical of tropical regions, is steady, with maximum and minimum temperatures maintaining a stable difference up to 10°C (50°F).
In terms of rainfall, the driest months are between March and April, with recorded averages as low as 32mm (1.26") to 45mm (1.77"). Conversely, the heaviest rainfall occurs from September to October, with precipitation levels peaking at a considerable 243mm (9.57"). The number of rainfall days mirrors the rainfall quantities, showing an escalation from a modest 3.7 days in April to a high of 15.7 days in October.
As expected in such tropical environments, the relative humidity is fairly high throughout the year, ranging from 79% in March and April to a peak level of 87% in September. The sea temperatures, congruous with land temperatures, provide a comfortable range from 26°C (78.8°F) to 29°C (84.2°F), scaling from February to September.
Monthly average temperatures range from 28.6°C (83.5°F), beginning and ending the year, to an annual peak of 33°C (91.4°F), achievable in August. An examination of the low temperatures unveils a similar trend, ascending from 19.4°C (66.9°F) at the start of the year to a high of 23.8°C (74.8°F) in June. This progression, typical of tropical regions, is steady, with maximum and minimum temperatures maintaining a stable difference up to 10°C (50°F).
In terms of rainfall, the driest months are between March and April, with recorded averages as low as 32mm (1.26") to 45mm (1.77"). Conversely, the heaviest rainfall occurs from September to October, with precipitation levels peaking at a considerable 243mm (9.57"). The number of rainfall days mirrors the rainfall quantities, showing an escalation from a modest 3.7 days in April to a high of 15.7 days in October.
As expected in such tropical environments, the relative humidity is fairly high throughout the year, ranging from 79% in March and April to a peak level of 87% in September. The sea temperatures, congruous with land temperatures, provide a comfortable range from 26°C (78.8°F) to 29°C (84.2°F), scaling from February to September.
The Best Time to Visit Cozumel
Visitors may find the barrier island of Cozumel most appealing during the spring months of March and April. With average high temperatures of 30.9°C (87.6°F) to 32°C (89.6°F), only 4 to 3.7 rainy days and a reasonable humidity level of 79%, the weather is significantly pleasant. Notably, the period aligns with spring break, making it an opportune moment for tourists.
Also noteworthy is the considerable daylight availability, extending from 12 to 12.6 hours, coupled with a beneficial UV index of 11 to 12. This timeframe presents perfect conditions for outdoor activities and exploration of the natural beauty that Cozumel offers.
Also noteworthy is the considerable daylight availability, extending from 12 to 12.6 hours, coupled with a beneficial UV index of 11 to 12. This timeframe presents perfect conditions for outdoor activities and exploration of the natural beauty that Cozumel offers.
The Worst Time to Visit Cozumel
The months of September and October prove less inviting due to heavy rainfall averaging 240mm (9.45") to 243mm (9.57"), amounting to the highest precipitation levels in the year. A peak number of rainy days (15.4 to 15.7) and a relatively high humidity of 87% to 85% typify this period.
Despite bearable temperatures, around the 30°C (86°F) mark, and still warm sea temperatures, the excessive rainfall can drastically limit outdoor activities and sightseeing expeditions. Excursions during these months should be carefully planned, taking into account the unpredictable weather dynamics.
Despite bearable temperatures, around the 30°C (86°F) mark, and still warm sea temperatures, the excessive rainfall can drastically limit outdoor activities and sightseeing expeditions. Excursions during these months should be carefully planned, taking into account the unpredictable weather dynamics.
Spring Weather in Cozumel
Spring ushers in some of the best weather conditions in Cozumel. March marks the beginning of the season with an average high temperature of 30.9°C (87.6°F) and a low of 20.7°C (69.3°F). By April, the heat slightly increases to a high of 32°C (89.6°F) while the low shifts to 21.8°C (71.2°F). Rainfall is sparse, spanning from 32mm (1.26") in March to 45mm (1.77") in April, with only about four rainy days in each month.
Furthermore, a moderate relative humidity of 79% and extended daylight hours, from 12 to 12.6, add more comfort to exploring the city. Significantly, enhanced UV exposure, rated at 11 to 12 during these months, necessitates utmost sun protection during outdoor activities.
Furthermore, a moderate relative humidity of 79% and extended daylight hours, from 12 to 12.6, add more comfort to exploring the city. Significantly, enhanced UV exposure, rated at 11 to 12 during these months, necessitates utmost sun protection during outdoor activities.
Summer Weather in Cozumel
The summer season in Cozumel, runing from May to August, offers average high temperatures from 32.7°C (90.9°F) to 33°C (91.4°F) and average low temperatures peaking at 23.8°C (74.8°F) in June. Notably, sea temperatures steadily increase to their yearly peak of 29°C (84.2°F). Meanwhile, daylight hours decrease from 13.1 in May to 12.8 in August.
However, rainfall patterns change significantly during this period. Starting with 111mm (4.37") in May, precipitation levels ramp up to a whopping 192mm (7.56") in June, although they drop slightly to 116mm (4.57") in July and further to 142mm (5.59") in August. Despite such variations in rainfall, the city maintains high levels of humidity, around 80% in May, peaking at 84% from June to August.
However, rainfall patterns change significantly during this period. Starting with 111mm (4.37") in May, precipitation levels ramp up to a whopping 192mm (7.56") in June, although they drop slightly to 116mm (4.57") in July and further to 142mm (5.59") in August. Despite such variations in rainfall, the city maintains high levels of humidity, around 80% in May, peaking at 84% from June to August.
Autumn Weather in Cozumel
Autumn in Cozumel, extending from September to November, is typified by the year's highest rainfall levels. Measurements rise from a hefty 240mm (9.45") in September to an immense 243mm (9.57") in October before falling to 123mm (4.84") in November. The number of rainy days also spikes, hitting its zenith at 15.7 days in October.
Despite the heavy precipitation, temperatures remain fairly warm, with highs hovering around 30°C (86°F) and lows just above 20°C (68°F). Sea temperatures also stick to late summer levels of 29°C (84.2°F), slowly descending to 28°C (82.4°F) in November. Relative humidity remains high during these months, usually above 80%.
Despite the heavy precipitation, temperatures remain fairly warm, with highs hovering around 30°C (86°F) and lows just above 20°C (68°F). Sea temperatures also stick to late summer levels of 29°C (84.2°F), slowly descending to 28°C (82.4°F) in November. Relative humidity remains high during these months, usually above 80%.
Winter Weather in Cozumel
Winter in Cozumel, spanning from December to February, is a season of subtropical warmth and reduced rainfall. Temperatures during this period are relatively mild with high averages falling from 28.6°C (83.5°F) in December to a slightly cooler 29.1°C (84.4°F) in February. Correspondingly, lows range from 20.3°C (68.5°F) in December to 19.4°C (66.9°F) in February.
Rainfall drops significantly during these months, starting at 107mm (4.21") in December and tailing off to 60mm (2.36") in February. The combined effect of less rainfall and warm, pleasant temperatures makes winter an inviting time to visit Cozumel. Sea temperatures are also inviting at this time of year, registering a comfortable range between 27°C (80.6°F) in December and 26°C (78.8°F) in February.
Rainfall drops significantly during these months, starting at 107mm (4.21") in December and tailing off to 60mm (2.36") in February. The combined effect of less rainfall and warm, pleasant temperatures makes winter an inviting time to visit Cozumel. Sea temperatures are also inviting at this time of year, registering a comfortable range between 27°C (80.6°F) in December and 26°C (78.8°F) in February.
Weather in January
The start of the year in Cozumel, Mexico is characterized by a gentle rise in temperatures from the cooler winter months. Moderate humidity and an increase in rainfall contribute to a balmy climate. Daylight lasts slightly over 11 hours, providing ample time for outdoor activities. Weather in January »
Weather in February
In February, the weather starts to shift with a decrease in rainfall compared to January. Daylight hours gradually increase, signaling the approach of warmer seasons. A relative reduction in sea temperature stimulates aquatic life, making it a good period for underwater exploration. Weather in February »
Weather in March
Transitioning into March brings a noticeable increase in daylight and sunshine hours, hinting at the arrival of summer. The weather continues to heat up, and the UV index jumps to its annual peak, underscoring the importance of sunblock. Weather in March »
Weather in April
April harbors the onset of the dry season, with lower rainfall amounts compared to previous months. Daylight continues to stretch, paving the way for extended outdoor sessions. The UV index remains high, making sunglasses and hats indispensable accessories. Weather in April »
Weather in May
Shifting towards May results in warmer temperatures and an increase in relative humidity as the dry season persists. Most days are sunlit and long, creating suitable conditions for sightseeing and exploring Cozumel. A high UV index of 12 advises caution when outdoors between sunup and sundown. Weather in May »
Weather in June
June introduces the wet season in Cozumel. Despite a rise in rainfall, it doesn't thwart the steady rise in temperatures, hinting at the sweltering days ahead. A profound shift in sea temperature to 28°C (82.4°F) favors divers and water sports enthusiasts. Weather in June »
Weather in July
The weather in July coincides with the apex of summer, suggesting high temperatures and prevailing humidity. Long summer days provide plenty of daylight for tourist activities. The sea temperature remains high at 29°C (84.2°F), offering ideal conditions for swimming and water sports. Weather in July »
Weather in August
August continues the summer trend, with persistent high temperatures and humidity levels. Extended daylight hours and a steady sea temperature of 29°C (84.2°F) provide optimal conditions for beach activities. Still, the UV index remains high, highlighting the need for adequate sun protection. Weather in August »
Weather in September
In September, the weather in Cozumel begins a gradual transition towards the cooler months. A slight dip in daylight hours is compensated by increased sunshine, providing abundant hours for outdoor pursuits. The UV index drops to 11, but sun protection remains a must. Weather in September »
Weather in October
As October dawns, the rainfall continues to dominate the Cozumel weather. A further decrease in daylight hours suggests the forthcoming arrival of winter. The UV index dips to 9, but sun protection remains essential during midday. Weather in October »
Weather in November
The transition towards winter becomes evident in November, with a decrease in daylight and sunshine hours. The sea temperature cools down to 28°C (82.4°F), yet remains warm enough for water activities. Subtle shifts in humidity and UV index indicate the onset of the cooler, drier season. Weather in November »
Weather in December
December marks the end of the year with the onset of winter, characterized by shorter daylight hours and a further drop in sea temperature. The UV index decreases to 7, but sun protection remains advisable during peak sun hours. Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Cozumel?
The months of January and December see the lowest levels of Cozumel's temperatures, averaging a high of 28.6°C (83.5°F).
How much does it rain in Cozumel?
In Cozumel, Mexico, during the entire year, the rain falls for 119.9 days and collects up to 1490mm (58.66") of precipitation.
What is the month with the lowest UV index in Cozumel?
The months with the lowest UV index in Cozumel are January and December, with an average maximum UV index of 7.
What months are the sea coldest in Cozumel?
The months with the coldest seawater are February and March, with an average sea temperature of 26°C (78.8°F).
What is the least humid month in Cozumel?
March and April, with an average relative humidity of 79%, are the least humid months in Cozumel.
What is the driest month in Cozumel?
The month with the least rainfall in Cozumel, Mexico, is March, when the rain falls for 4 days and typically collects 32mm (1.26") of precipitation.
What month has the most sunshine in Cozumel?
The month with the most sunshine in Cozumel is April, with an average of 8.6h of sunshine.
When is the highest UV index in Cozumel?
The months with the highest UV index in Cozumel, Mexico, are April through August, with an average maximum UV index of 12.
When are the longest days in Cozumel?
June has the longest days of the year in Cozumel, Mexico, with an average of 13h and 24min of daylight.
What months are the sea warmest in Cozumel?
The months with the warmest seawater are July through October, with an average sea temperature of 29°C (84.2°F).
What is the warmest month in Cozumel?
In Cozumel, August is the month with the highest recorded average temperatures, measuring a high of 33°C (91.4°F) and a low of 23.5°C (74.3°F).
What is the most humid month in Cozumel?
September is the most humid month, with an average relative humidity of 87%.
What are the months with the least sunshine in Cozumel?
The months with the least sunshine in Cozumel, Mexico, are September and November, with an average of 6.1h of sunshine.
What is the rainiest month in Cozumel?
The month with the most rainfall is October, when the rain falls for 15.7 days and typically aggregates up to 243mm (9.57") of precipitation.
What is the month with the shortest days in Cozumel?
December has the shortest days of the year in Cozumel, Mexico, with an average of 10h and 54min of daylight.
Is there Daylight Saving Time (DST) in Cozumel?
Cozumel, Mexico, does not utilize Daylight Saving Time (DST). EST timezone is used over the entire year.
Average temperature
Cozumel, Mexico
The warmest month (with the highest average high temperature) is August (33°C).
The months with the lowest average high temperature are January and December (28.6°C).
The month with the highest average low temperature is June (23.8°C).
The coldest months (with the lowest average low temperature) are January and February (19.4°C).
Average humidity
Cozumel, Mexico
The month with the highest relative humidity is September (87%).
The months with the lowest relative humidity are March and April (79%).
Average rainfall
Cozumel, Mexico
- Average rainfall in January:
81.4mm - Average rainfall in February:
60mm - Average rainfall in March:
32.2mm - Average rainfall in April:
44.8mm - Average rainfall in May:
110.6mm - Average rainfall in June:
191.7mm
- Average rainfall in July:
115.5mm - Average rainfall in August:
141.7mm - Average rainfall in September:
240.2mm - Average rainfall in October:
242.5mm - Average rainfall in November:
122.5mm - Average rainfall in December:
106.8mm
The wettest month (with the highest rainfall) is October (242.5mm).
The driest month (with the least rainfall) is March (32.2mm).
Average rainfall days
Cozumel, Mexico
- Average rainfall days in January:
8.7 days - Average rainfall days in February:
6.5 days - Average rainfall days in March:
4 days - Average rainfall days in April:
3.7 days - Average rainfall days in May:
7.2 days - Average rainfall days in June:
12.6 days
- Average rainfall days in July:
11.8 days - Average rainfall days in August:
13.4 days - Average rainfall days in September:
15.4 days - Average rainfall days in October:
15.7 days - Average rainfall days in November:
11.1 days - Average rainfall days in December:
9.8 days
The month with the highest number of rainy days is October (15.7 days).
The month with the least rainy days is April (3.7 days).
Average sea temperature
Cozumel, Mexico
The best months for swimming (with the highest average sea temperature) are July, August, September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (26°C).
Average daylight / Average sunshine
Cozumel, Mexico
- Average daylight in January:
11h and 1min - Average daylight in February:
11h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 4min - Average daylight in May:
13h and 1min - Average daylight in June:
13h and 2min
- Average daylight in July:
13h and 1min - Average daylight in August:
12h and 5min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 4min - Average daylight in November:
11h and 1min - Average daylight in December:
10h and 5min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in January:
6h and 2min - Average sunshine in February:
6h and 5min - Average sunshine in March:
7h and 3min - Average sunshine in April:
8h and 4min - Average sunshine in May:
7h and 3min - Average sunshine in June:
6h and 5min
- Average sunshine in July:
7h and 1min - Average sunshine in August:
7h and 1min - Average sunshine in September:
6h and 1min - Average sunshine in October:
6h and 1min - Average sunshine in November:
6h and 1min - Average sunshine in December:
6h and 1min
The month with the most sunshine is April (Average sunshine: 8h and 36min).
The months with the least sunshine are September and November (Average sunshine: 6h and 6min).
Average UV index
Cozumel, Mexico
The months with the highest UV index are April, May, June, July and August (UV index 12).
The months with the lowest UV index are January and December (UV index 7).
Cozumel, Mexico
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