Where has the best climate in Costa Rica in 2026?

Atenas wins for many movers who want “eternal spring” marketing that actually tracks cooler nights and softer sticky-air days than the beach: Living in Atenas. Escazú and San José keep Central Valley tempering while holding hospitals, schools, and flights: Living in Escazú and Living in San José. Country routing still starts there for first leases: Where to live in Costa Rica.

Tamarindo and wider Guanacaste win when dry-season sun and surf outweigh heat peaks and air-conditioning costs: Living in Tamarindo and Summer heat. Caribbean Limón and Puerto Viejo lose if you need a Pacific-style December-to-April dry calendar: Rain. Southern Pacific rainforest belts such as Manuel Antonio sit between those poles: greener, wetter, and stickier than Guanacaste savanna.

Write two climate vetoes before you book a year. Examples: “cannot sleep without cool nights” or “will not run beach AC all dry season.” Test shortlists in both dry and green months if you can; September afternoons feel different from February clarity: Weather and Humidity.

Housing still couples to climate. Valley leases need drainage awareness in wet months. Beach flats need ventilation, mold checks, and realistic electricity lines: How to rent a home and Utilities, internet, and transport. A dry-season week in Tamarindo does not prove you can work through sticky green-season nights without AC. Visit shortlisted streets in the afternoon heat before you celebrate a morning viewing.