Nuevo Arenal Weather in December
Nuevo Arenal in December sees high daytime temperatures of 28°C (82°F) and nighttime lows of 20°C (68°F). Rainfall is fairly high this month at around 147 mm (5.8 in), so pack a rain jacket to stay dry.
Rainfall in Nuevo Arenal in December
Climate statistics over the past 30 years suggest around 13 days of rain, with 147 mm (5.8 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Nuevo Arenal in December
If you're visiting Nuevo Arenal in December, expect highs of 28°C (82°F) and overnight lows around 20°C (68°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 20°C (68°F), the nights are warm and generally comfortable.For Nuevo Arenal itself, January and February generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Costa Rica, check out our Nuevo Arenal's climate page.
Nuevo Arenal Temperature in December
Min Temperature
20°C (68°F)
Max Temperature
28°C (82°F)
Chance of Rain
44%
Precipitation
147 mm (5.8 in)
Rainy days
13 days
Humidity
88% *
Daily Historical Temperatures
40-year average (1977-2025)
Based on our historical records, temperatures in Nuevo Arenal typically stay consistent throughout December, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 22°C (72°F).
Average temperatures in December
Daily Historical Precipitation
40-year average (1977-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Nuevo Arenal in December
Browse day-by-day weather records for Nuevo Arenal spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Nuevo Arenal historical weather extremes in December
Based on 29 years of weather observations in Nuevo Arenal between 1996 and 2025, these are the recorded extremes.
- The warmest day in December was on December 26, 2002, with a maximum of 36°C (97°F).
- Nuevo Arenal experienced its chilliest December day on December 21, 1997, reaching only 24°C (75°F).
- Nighttime temperatures dropped to 17°C (63°F) on December 21, 2008, marking the coldest December night on record.
Best Places in Costa Rica in December
Find out more about the weather in Costa Rica and which places have the best travel conditions in this month. See all of Costa Rica in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Nuevo Arenal in December
Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho.What To Do in Nuevo Arenal in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Costa Rica, check out our Nuevo Arenal's climate page.
See the full Nuevo Arenal climate overview or explore weather in Costa Rica.
