The dry season in Costa Rica, running from December to April, is the ideal time to explore the country’s incredible landscapes and biodiversity. Each month of this season offers unique experiences, from perfect weather for outdoor adventures to exciting cultural events and wildlife encounters. Here’s a detailed month-by-month breakdown to help you plan your 2025 trip.

December: The Beginning of Summer

• Weather Overview: The dry season officially kicks off in December, although early in the month, some regions might still experience light rains as the transition from the rainy season concludes.
• Top Temperatures:
  • Guanacaste (Pacific North): 32–34°C (90–93°F)
  • Central Valley (San José): 25–28°C (77–82°F)
  • Southern Pacific (Osa Peninsula): 30–32°C (86–90°F)
• Low Temperatures:
  • Monteverde (Cloud Forest): 15–17°C (59–63°F)
• Highlights: The holiday season adds a festive vibe, with Christmas parades, decorations, and local celebrations. Wildlife is abundant as forests remain lush from recent rains.

January: Clear Skies and Cool Breezes

• Weather Overview: January is one of the driest months, with consistent sunny days and mild breezes, especially in the Central Valley and Guanacaste.
• Top Temperatures:
  • Guanacaste: 33–35°C (91–95°F)
  • Central Pacific (Manuel Antonio): 30–32°C (86–90°F)
• Low Temperatures:
  • San José: 18–20°C (64–68°F)
  • Monteverde: 14–16°C (57–61°F)
• Highlights: Ideal for beachgoers and hikers. Whale watching is excellent on the Pacific coast, while Monteverde offers clear trails for cloud forest adventures.

February: Peak of the Dry Season

• Weather Overview: February boasts the driest and sunniest weather of the year, with almost no rainfall in the Pacific regions. Coastal areas are warm and dry, while higher elevations remain cooler and pleasant.
• Top Temperatures:
  • Guanacaste: 34–36°C (93–97°F)
  • Central Pacific: 31–33°C (88–91°F)
• Low Temperatures:
  • Monteverde: 13–15°C (55–59°F)
  • San José: 17–19°C (63–66°F)
• Highlights: Perfect for outdoor activities such as surfing, snorkeling, and hiking. Lesser-known beaches like Playa Carrillo are less crowded.

March: Sun-Soaked Adventures

• Weather Overview: March is one of the hottest months, especially in lowland areas like Guanacaste and the Central Pacific. Humidity levels remain low, ensuring comfortable travel.
• Top Temperatures:
  • Guanacaste: 35–37°C (95–99°F)
  • Central Valley: 27–30°C (81–86°F)
• Low Temperatures:
  • Monteverde: 14–16°C (57–61°F)
  • San José: 18–20°C (64–68°F)
• Highlights: Beach towns thrive with tourists, and national parks like Corcovado are at their most accessible. Ideal for birdwatching as migratory species are active.

April: Transition to the Green Season

• Weather Overview: April marks the end of the dry season, with temperatures peaking before the rains gradually return later in the month. Beaches and forests start showing signs of the upcoming rainy season with slightly greener landscapes.
• Top Temperatures:
  • Guanacaste: 36–38°C (97–100°F)
  • Central Pacific: 32–34°C (90–93°F)
• Low Temperatures:
  • Monteverde: 15–17°C (59–63°F)
  • San José: 19–21°C (66–70°F)
• Highlights: Easter Week (Semana Santa) is a major event in Costa Rica, with parades and celebrations. Coastal areas remain vibrant and bustling with activity.

Tips for Traveling During the Dry Season

1. Pack for the Heat: Lightweight, breathable clothing, sunscreen, and hats are essential.
2. Plan Ahead: Book accommodations and tours in advance, especially during high-demand months like January and March.
3. Explore Multiple Regions: Combine coastal escapes with cooler mountain adventures for a varied experience.
4. Stay Hydrated: Carry a reusable water bottle and refill regularly, especially when hiking or exploring beaches.