DAILY CLIMATE REPORT - issued daily: Detailed daily weather statistics (usually for yesterday), including temperature, precipitation, degree days, wind, humidity, sunrise/sunset, and record temperature data for the following day.
In Costa Rica the average annual temperature is around 21 to 27 degrees Celsius or 70 to 81 degrees Fahrenheit and the coolest months of the year are November, December and January. The months March through May are the hottest months of the year, so make sure you protect yourself from the sun.
Expect 109mm (4.3 inches) of rainfall across the whole of May with 7 days with some rain falling. Maximum UV levels will be extreme (11+ UV index) at midday when the skies are clear. The average sea temperature in and around Cancun in May is 27Â°C (81Â°F). Cancun sunrise & sunset times for May 2018 Browse the sunrise & sunset times for Cancun in May 2018.