Costa Rica in December
December is Costa Rica's 5th-best month (rank 5 of 12): its 10 destinations average 77/100, led by Tamarindo at 89 — 34°C and 4 rainy days — while Monteverde is cooler at 25°C and scores 85.
#5 of 12 months for Costa Rica · 10 destinations · updated September 2026 · climate normals from ERA5 reanalysis
🇨🇷 Costa Rica, month by month
77/100 in DecemberWhere in Costa Rica in December
Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means December is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.
What's on in Costa Rica in December
- Arribada at Ostional · Nosara · 1 Jul – 31 Dec (usually)
- Christmas and New Year · Nosara and 8 more places · 18 Dec – 3 Jan
- Olive ridley nesting · Jacó · 15 Aug – 15 Dec (usually)
- Leatherback nesting at Las Baulas · Tamarindo · 20 Oct – 15 Feb
- Festival de la Luz · San José · 5–15 Dec (usually)
- Fiestas de Zapote · San José · 25 Dec – 4 Jan
Seasons in force
Peak crowds at 2 of Costa Rica's 4 well-known places this month.