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.
May marks the start of the scorching hot weather in Cancun. Average daytime high temperatures are around 31C/88F but higher temperatures have been recorded. During the night, expect an average low of 25C/77F. Sporadic showers can be expected but May is in general a rather dry month.