Guanacaste, Costa Rica, experiences a transition from dry season to wet season during May. This period, often called “green season,” marks the beginning of increased rainfall, transforming the landscape from dry and brown to lush and vibrant. Temperatures typically remain warm, with average highs in the low 90s Fahrenheit (low 30s Celsius). While rain showers become more frequent, they are often brief and intense, followed by sunshine.
This shift in weather patterns is vital for the region’s ecosystems. The increasing rainfall replenishes water sources, supports agricultural activities, and promotes the flourishing of flora and fauna. Historically, this seasonal change dictated planting and harvesting cycles for local communities. While the increased precipitation may deter some travelers accustomed to the consistently sunny dry season, the green season offers unique advantages, such as lower prices, fewer crowds, and the opportunity to witness Guanacaste’s natural beauty at its peak.