Panama lies between 7 degrees and 9 degrees above the equator, which places it firmly within the Tropics. Accordingly, average year-round temperatures are a balmy 75°F to 85°F (24°C-29°C), varying only with altitude. The average temperature in the Chiriquí Highlands, for example, is 60°F (16°C), and is the only area in Panama where you will likely feel cold.
Humidity is always high in Panama, and rainfall varies noticeably between the Pacific and Caribbean sides of the country, with some areas in the Caribbean receiving almost twice the yearly rainfall of Panama City. The best time to visit Panama is during the summer dry season from mid-December to mid-April. Caribbean destinations such as Bocas del Toro have a shorter dry season, usually September/October and February/March, but really showers can occur on any day
The Chiriquí Highlands experiences a variety of microclimates that can change drastically, sometimes even within a few miles. In Boquete, high winds and a peculiar misting rain called “bajareque” are common from mid-December to mid-February; January sees the occasional thunderstorm, and March to May is the sunniest time.