Effects of high humidity. Humidity is considered too high when its level goes above 45% - 50%, sometimes as high as 80% and up. High humidity can be especially dangerous when combined with high temperature - as mentioned above, high humidity disrupts the body's ability to cool itself, which may lead to a heat stroke.
The average sea surface temperature in April 2017 for Cancun was 84.0Â°F. The maximum and minimum values were 83.0Â°F and 85.4Â°F respectively.
Averages for Cancun in April. Weather lowdown. The weather continues to improve in April in Cancun, Mexico, when the average temperature is 26Â°C. At this time of the year, highs of up to 29Â°C are common, cooling down to 23Â°C after dark.During April, the resort experiences an average of ten hours of sunshine each day, alongside an average sea temperature of 27Â°C, making it a popular month to hit the beach.hen it comes to all-inclusive accommodation in Cancun, Hard Rock Hotel Cancun is a top choice. Perfect for families, this complex offers accommodation in the form of rooms and suites which come with private balconies and double Jacuzzis.