April weather forecast
Cozumel, Mexico

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. Sea temperature reaches 27°C (80.6°F), encouraging beachgoers and snorkelers to frequent the coast. The month also observes a surge in temperature swinging from 21.8°C (71.2°F) to a scorching 32°C (89.6°F).

Temperature

As April takes its course, Cozumel's average high-temperature registers at a still tropical 32°C (89.6°F), closely aligning with the preceding month. In April, the nighttime temperature lowers to an average of 21.8°C (71.2°F).

Heat index

April's mean heat index is calculated to be an extremely hot 44°C (111.2°F). Be careful: Heat exhaustion and heat cramps are probable. Heatstroke may result from extended activity.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The months with the lowest humidity in Cozumel, Mexico, are March and April, with an average relative humidity of 79%.

Rainfall

In April, in Cozumel, the rain falls for 3.7 days. Throughout April, 45mm (1.77") of precipitation is accumulated. Throughout the year, there are 119.9 rainfall days, and 1490mm (58.66") of precipitation is accumulated.

Sea temperature

In Cozumel, the average seawater temperature in April is 27°C (80.6°F).
Note: Water temperatures ranging between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, making swimming, diving, and similar water activities pleasurable for extended periods.

Daylight

In Cozumel, Mexico, the average length of the day in April is 12h and 38min.
On the first day of the month, sunrise is at 6:40 am and sunset at 7:02 pm. On the last day of April, in Cozumel, Mexico, sunrise is at 6:18 am and sunset at 7:11 pm EST.

Sunshine

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

UV index

April through August, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In April, a daily maximum UV index of 12 leads to the following instructions:
Adopt all essential precautions. Preventing sun harm is crucial. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Apply generously and frequently a broad-spectrum SPF 30+ sunscreen every two hours, or immediately after swimming or any outdoor exercise. Take heed! Reflections of sand and water make the Sun's UV rays stronger.