The North Pacific is a dry desert climate. It includes the Guanacaste Province, which is made up of Liberia and Tilaran, the cities of Orotina and San Mateo from the Alajuela Province and the northern part of the Province of Puntarenas from the river mouth of the Tarcoles River, north. Also included in this region are: Santa Teresa/Mal Pais and Montezuma, Playa del Coco, Playa Flamingo, Tamarindo, Nosara and Samara.
The warmest month in this zone is April; the coolest nights are between November and March. Usually it goes from no rain to tropical rain beginning May until November and then late November to May is dry season. July tends to be the least rainy of the wet months, we actually experience what locals call “Little Summer” from mid July into the end of August where it rains only a few hours a week, usually in the evenings.
October can be the wettest month, typically more towards the end of October. September is typical tropical month, you might experience rain a few times a week and that’s usually later in the day or evening (most rain happens in the evening). Despite the rain there is still an average six to eight hours of sun per day during the “rainy season”.
There is no real summer or winter in Costa Rica, we enjoy an average yearly temperature of about 76-80 degrees making it one of the most desirable climates in the world.