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.
Boston ferns have become a plant of choice for savvy shade-loving gardeners. This fern will consistently give stunning results with minimal effort, no dead â heading and a calming resting place for the eye to settle.oston ferns have become a plant of choice for savvy shade-loving gardeners. This fern will consistently give stunning results with minimal effort, no dead â heading and a calming resting place for the eye to settle.
U.D. Department of Agriculture hardiness zones for the Boston fern are 9, 10 and 11, all of which have average low temperatures of 20 to 40 degrees Fahrenheit. Ideally, the temperature for outdoor ferns is between 65 and 95 degrees Fahrenheit, but the Boston fern will tolerate much colder temperatures.