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.
During June and July, rain showers pause briefly, and Costa Rica's forests burst with green foliage. While planning your trip, keep in mind that the weather varies by region. In the thick forests of the Caribbean Sea coast and Northern Plains, expect high humidity and temperatures ranging between the 70s and high 80s year-round.