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.
The average sea temperature in and around Cancun & Riviera Maya in April is 26Â°C (79Â°F). The weather in Cancun & Riviera Maya in April is represented by Cancun. Cancun & Riviera Maya sunrise & sunset times for April 2018. Browse the sunrise & sunset times for Cancun & Riviera Maya in April 2018. Select a month to view Cancun & Riviera Maya sunrise & sunset times for the next twelve months.