The northwestern province of Costa Rica, Guanacaste, experiences its dry season during December. This period is characterized by sunshine, minimal rainfall, and low humidity, creating ideal conditions for outdoor activities. Temperatures typically range from the mid-70s to the low 90s Fahrenheit (mid-20s to low 30s Celsius), with cooler evenings. The Pacific Ocean remains relatively warm, suitable for swimming and water sports.
This predictable, dry weather makes December a popular time to visit Guanacaste. The region’s diverse ecosystems, from dry tropical forests to pristine beaches, become easily accessible and enjoyable. Businesses catering to tourism often experience peak season during this month. Historically, this dry period has played a crucial role in shaping the region’s agricultural practices and cultural traditions.