Cozumel
Mexico
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Cozumel, Mexico

A small blue boat, palm trees, and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico, with a small island
A small blue boat, palm trees, and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico, with a small island
May, the last month of the spring, in Cozumel, is another tropical month, with average temperature fluctuating between 22.9°C (73.2°F) and 32.7°C (90.9°F).

Temperature

In Cozumel, Mexico, the average high-temperature is essentially the same as in April - a still hot 32.7°C (90.9°F). In Cozumel, the average low-temperature is 22.9°C (73.2°F).

Heat index

The average heat index is appraised at a burning hot 47°C (116.6°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like differences in body mass, height, and shape, clothing, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In May, the average relative humidity is 80%.

Rainfall

In Cozumel, in May, during 7.2 rainfall days, 110.6mm (4.4") of precipitation is typically accumulated. In Cozumel, during the entire year, the rain falls for 119.9 days and collects up to 1489.9mm (58.7") of precipitation.

Sea temperature

In May, the average sea temperature is 28°C (82.4°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in Cozumel is 13.1h.

Sunshine

The average sunshine in Cozumel is 7.5h.

UV index

April through August, with an average maximum UV index of 12, are months with the highest UV index in Cozumel, Mexico. A UV Index estimate of 11, and higher, represents an extreme threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 12 transform into the following instructions:
Take all necessary precautions, as unprotected skin can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in May in Cozumel?

In Cozumel, Mexico, in May, the average high-temperature is 32.7°C (90.9°F), and the average low-temperature is 22.9°C (73.2°F). The average heat index (a.k.a. 'feels like', 'real feel'), that factores the actual air temperature with the relative humidity, in May is calculated to 47°C (116.6°F).

What is the average humidity in May in Cozumel?

In May, the average relative humidity in Cozumel is 80%.

How much does it rain in Cozumel in May?

In Cozumel, in May, during 7.2 rainfall days, 110.6mm (4.4") of precipitation is typically accumulated.

What is the water temperature in May in Cozumel?

In Cozumel, in May, the average water temperature is 28°C (82.4°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in May in Cozumel?

In May, the average length of the day in Cozumel, Mexico, is 13.1h.

How many hours of sunshine does Cozumel have in May?

In May, the average sunshine in Cozumel is 7.5h.

When is the highest UV index in Cozumel?

April through August, with an average maximum UV index of 12, are months with the highest UV index.

How high is the UV index in May in Cozumel?

In May, the average daily maximum UV index in Cozumel, Mexico, is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in May - Cozumel, Mexico
  • Average high temperature in May: 32.7°C

The warmest month (with the highest average high temperature) is August (33°C).
Months with the lowest average high temperature are January and December (28.6°C).

  • Average low temperature in May: 22.9°C

The month with the highest average low temperature is June (23.8°C).
Coldest months (with the lowest average low temperature) are January and February (19.4°C).

Average humidity in May - Cozumel, Mexico
  • Average humidity in May: 80%

The month with the highest relative humidity is September (87%).
Months with the lowest relative humidity are March and April (79%).

Average rainfall in May - Cozumel, Mexico
  • Average rainfall in May: 110.6mm

The wettest month (with the highest rainfall) is October (242.5mm).
The driest month (with the lowest rainfall) is March (32.2mm).

Average rainfall days in May - Cozumel, Mexico
  • Average rainfall days in May: 7.2 days

The month with the highest number of rainy days is October (15.7 days).
The month with the lowest number of rainy days is April (3.7 days).

Average sea temperature in May - Cozumel, Mexico
  • Average sea temperature in May: 28°C

Best months for swimming (with the highest average sea temperature) are July, August, September and October (29°C).
Coldest months (with the lowest average sea temperature) are February and March (26°C).

Average daylight in May / Average sunshine in May - Cozumel, Mexico
  • Average daylight in May: 13.1h

The month with the longest days is June (Average daylight: 13.4h).
The month with shortest days is December (Average daylight: 10.9h).

  • Average sunshine in May: 7.5h

The month with most sunshine is April (Average sunshine: 8.6h).
Months with least sunshine are September and November (Average sunshine: 6.1).

Average UV index in May - Cozumel, Mexico
  • Average UV index in May: 12

Months with the highest UV index are April, May, June, July and August (UV index 12).
Months with the lowest UV index are January and December (UV index 7).