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.
Check the Weather in the Cancun and Riviera Maya in April before you book your next holiday. This gives the best indication of the weather in April and includes figures for temperature, sunshine and rainfall.The Cancun and Riviera Maya april weather guide shown below is for Cancun. 1  32Â°C max day temperature.heck the Weather in the Cancun and Riviera Maya in April before you book your next holiday. This gives the best indication of the weather in April and includes figures for temperature, sunshine and rainfall.