Costa Rica's climate is like most countries near the equator. On the beaches of the Pacific northwest regions, daytime temperatures range in the eighties to nineties F . In middle elevations you will find the temperature range in the comfortable 70s. At night, the mercury can fall as low as the forties and fifties at the top of the mountains. Within each elevation range, the temperatures remain relatively constant all year round.
Rainfall is subject to annual and regional patterns.
The northwest has a fairly well defined dry season from November to April. The dry season is a month or two shorter along the Pacific coast. July also tends to be a dry month on the Pacific slope. Welcome rains during the balance of the year bring about a general greening and freshens the countryside. Rain ususally comes in afternoon cloudbursts, leaving the mornings sunny and the night sky filled with stars.