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

April 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
April, the same as March, in Cozumel, Mexico, is another hot spring month, with average temperature varying between 21.8°C (71.2°F) and 32°C (89.6°F).
The ideal sea water temperature of 27°C (80.6°F) and only 3.7 rainfall days, with 44.8mm (1.8") of accumulated rainfall, make April the best time for swimming and other water activities.

Temperature

In Cozumel, Mexico, the average high-temperature is essentially the same as in March - a still tropical 32°C (89.6°F). The average low-temperature, in Cozumel, is 21.8°C (71.2°F).

Heat index

In April, the average heat index is evaluated at an extremely hot 43.9°C (111°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, differences in body mass, height, and shape, wind, and pregnancy affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

March and April, with an average relative humidity of 79%, are the least humid months.

Rainfall

In Cozumel, during April, the rain falls for 3.7 days and regularly aggregates up to 44.8mm (1.8") of precipitation. Throughout the year, in Cozumel, there are 119.9 rainfall days, and 1489.9mm (58.7") of precipitation is accumulated.

Sea temperature

In Cozumel, the average water temperature is 27°C (80.6°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In April, the average length of the day is 12.6h.

Sunshine

The month with the most sunshine is April, with an average of 8.6h of sunshine.

UV index

Months with the highest UV index are April through August, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an excessive health risk from the exposure to the Sun's UV radiation for the average person.
Note: In April, the average maximum UV index of 12 translate into the following recommendations:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in April in Cozumel?

In April, in Cozumel, the average high-temperature is 32°C (89.6°F), and the average low-temperature is 21.8°C (71.2°F). In April, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that represents influence of the relative humidity to air temperaure, is estimated at 43.9°C (111°F).

What are the least humid months in Cozumel?

March and April, with an average relative humidity of 79%, are the least humid months in Cozumel.

What is the average humidity in April in Cozumel?

The average relative humidity in April in Cozumel is 79%.

How many days does it rain in April in Cozumel?

In April, in Cozumel, the rain falls for 3.7 days. Throughout April, 44.8mm (1.8") of precipitation is accumulated.

How warm is the water in April in Cozumel?

In Cozumel, in April, the average water temperature is 27°C (80.6°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Cozumel have in April?

The average length of the day in April in Cozumel, Mexico, is 12.6h.

What month has the most sunshine in Cozumel?

April has the most sunshine of the year in Cozumel, with an average of 8.6h of sunshine.

How many hours of sunshine does Cozumel have in April?

The average sunshine in April is 8.6h.

When is the highest UV index in Cozumel?

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

What is the UV index intensity in April in Cozumel?

In April, the average daily maximum UV index in Cozumel is 12. A UV Index reading of 11, and higher, represents an extreme health threat from the exposure to the Sun's UV radiation.
Average temperature in April - Cozumel, Mexico
  • Average high temperature in April: 32°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 April: 21.8°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 April - Cozumel, Mexico
  • Average humidity in April: 79%

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

Average rainfall in April - Cozumel, Mexico
  • Average rainfall in April: 44.8mm

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 April - Cozumel, Mexico
  • Average rainfall days in April: 3.7 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 April - Cozumel, Mexico
  • Average sea temperature in April: 27°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 April / Average sunshine in April - Cozumel, Mexico
  • Average daylight in April: 12.6h

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 April: 8.6h

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 April - Cozumel, Mexico
  • Average UV index in April: 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).