Arenal Volcano National Park

Arenal Volcano National Park Weather in December

Average temperatures, rainfall, sunshine and the best places to visit in Arenal Volcano National Park, Costa Rica in December.

Planning a getaway to Arenal Volcano National Park, Costa Rica this December and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Arenal Volcano National Park in December

Arenal Volcano National Park, Costa Rica is a region in Costa Rica. December in Arenal Volcano National Park generally has warm temperatures, with precipitation levels ranging from high to heavy.

Temperatures

You can expect warm maximum daytime temperatures of around 27°C (81°F) and nighttime temperatures around 20°C (68°F) in El Castillo de La Fortuna. On average, December is the month with the lowest temperatures of the year in El Castillo de La Fortuna.

For specific regional insights in Arenal Volcano National Park, Costa Rica, refer to the map provided below.

Precipitation

In December, precipitation varies across different areas. From high rainfall in Nuevo Arenal with an average of 147 mm (5.8 in) to heavy rainfall in La Fortuna with 196 mm (7.7 in).

Average sunshine

Sunshine is generally plentiful throughout many areas. El Castillo de La Fortuna enjoys about 233 hours of sunlight, ideal for those seeking sunny weather.

Explore Arenal Volcano National Park by month

Pick a month to see the average temperature, rainfall and sunshine in Arenal Volcano National Park — and find the best time to visit. (based on El Castillo de La Fortuna)

Best Places to Visit in Arenal Volcano National Park in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Arenal Volcano National Park.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Arenal Volcano National Park

What is the weather like in December for some of the most popular destinations in Arenal Volcano National Park, Costa Rica?

Temperature range in Arenal Volcano National Park (December)

Precipitation variation in Arenal Volcano National Park (December)

El Castillo de La Fortuna

In December El Castillo de La Fortuna generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 20°C (68°F) and high monthly rainfall. So on average the conditions are pleasant that month.

November
December
January
Max temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Min temperature
20°C (68°F)
20°C (68°F)
19°C (66°F)
Monthly sun hours
183 hours
233 hours
264 hours
Monthly rainfall
251 mm (9.9 in)
154 mm (6.1 in)
85 mm (3.3 in)
Monthly rainy days
16 days
14 days
10 days
Weather conditions

Nuevo Arenal

In December Nuevo Arenal generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 20°C (68°F) and high monthly rainfall. So on average the conditions are pleasant that month.

November
December
January
Max temperature
28°C (82°F)
28°C (82°F)
28°C (82°F)
Min temperature
21°C (70°F)
20°C (68°F)
20°C (68°F)
Monthly rainfall
227 mm (8.9 in)
147 mm (5.8 in)
90 mm (3.5 in)
Monthly rainy days
15 days
13 days
10 days
Weather conditions

La Fortuna

In December La Fortuna generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 21°C (70°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

November
December
January
Max temperature
25°C (77°F)
26°C (79°F)
26°C (79°F)
Min temperature
21°C (70°F)
21°C (70°F)
20°C (68°F)
Monthly rainfall
140 mm (5.5 in)
196 mm (7.7 in)
113 mm (4.4 in)
Monthly rainy days
16 days
16 days
12 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Arenal Volcano National Park, in Costa Rica.

Popular cities in December

Day & night temperatures, rainfall and average weather in Arenal Volcano National Park in December.

City Weather Day temp Night temp Rainfall
El Castillo de La Fortuna 27°C (81°F) 20°C (68°F) 154 mm (6.1 in)
Nuevo Arenal 28°C (82°F) 20°C (68°F) 147 mm (5.8 in)
La Fortuna 26°C (79°F) 21°C (70°F) 196 mm (7.7 in)

Arenal Volcano National Park weather in December: frequently asked questions

What is the weather like in Arenal Volcano National Park, Costa Rica in December?

Expect pleasant weather across Arenal Volcano National Park, Costa Rica in December. The popular destination of El Castillo de La Fortuna averages 27°C (81°F) by day and 20°C (68°F) at night during this month.

What is the average temperature in Arenal Volcano National Park, Costa Rica in December?

Daytime temperatures in El Castillo de La Fortuna peak at roughly 27°C (81°F) in December, dropping to about 20°C (68°F) overnight.

Does Arenal Volcano National Park, Costa Rica get a lot of rain in December?

El Castillo de La Fortuna typically receives notable rainfall in December, about 154 mm (6.1 in) on average across Arenal Volcano National Park, Costa Rica.

Is December a Good Time to Visit Arenal Volcano National Park, Costa Rica?

In our opinion, December is a good time to visit Arenal Volcano National Park, Costa Rica with overall pleasant weather in El Castillo de La Fortuna. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, the best visiting conditions can be found in January, February and March offering mostly perfect weather in El Castillo de La Fortuna. In contrast, May, June, September and October tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Arenal Volcano National Park.

Weather and climate has detailed information for every country in the world. Are you going to Costa Rica? Get detailed historical weather averages for many cities in Costa Rica.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

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