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.
Cancun, Mexico weather text for Sun 16th April. The Cancun, Mexico weather is going to be sunny. Cancun, Mexico visibility is going to be around 20 km i.e. 12 miles and an atmospheric pressure of 1016 mb. The daytime temperature is going to reach 27 Â°c and the temperature is going to dip to 23 Â°c at night.