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. What's the Weather like in Cancun in April. Temperature. Good news for fans of dry weather, endless sunshine and hot temperatures: April is officially the driest month of the year in Cancun. It also represents an upward trend in temperatures which will be felt in this part of Mexico for the next 6 months! Read more