La Fortuna Weather in December
December in La Fortuna brings high temperatures around 26°C (79°F) during the day, dropping to 21°C (70°F) at night, with quite a bit of rainfall expected, averaging around 196 mm (7.7 in) for the month.
Rainfall in La Fortuna in December
You can typically expect 16 days of rain this month, averaging around 196 mm (7.7 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in La Fortuna in December
In December, expect high temperatures in La Fortuna, with highs of 26°C (79°F) and lows of 21°C (70°F) at night. This kind of day-to-night contrast is typical for this time of year. Nights are mild at around 21°C (70°F), which is comfortable for most people.Our weather planner can help you find worldwide destinations with pleasant weather during this period. February, March and April typically offer the best weather for La Fortuna.
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 La Fortuna's climate page.
La Fortuna Temperature in December
Min Temperature
21°C (70°F)
Max Temperature
26°C (79°F)
Chance of Rain
53%
Precipitation
196 mm (7.7 in)
Rainy days
16 days
Daily Historical Temperatures
44-year average (1976-2025)
Based on our historical records, temperatures in La Fortuna typically stay consistent throughout December, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows around 19°C (66°F).
Average temperatures in December
Daily Historical Precipitation
44-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for La Fortuna in December
Browse day-by-day weather records for La Fortuna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
La Fortuna historical weather extremes in December
Based on 29 years of weather observations (1996-2025), these are the most extreme conditions recorded in La Fortuna.
- On December 23, 1997, temperatures climbed to 34°C (93°F), marking the warmest December day on record.
- La Fortuna experienced its chilliest December day on December 11, 2017, reaching only 21°C (70°F).
- La Fortuna registered its coldest December night on December 7, 2010, with temperatures dropping to 13°C (55°F).
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 La Fortuna in December
Warm but pleasant conditions in La Fortuna in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions.What To Do in La Fortuna 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 La Fortuna's climate page.
See the full La Fortuna climate overview or explore weather in Costa Rica.
