Arenal Volcano National Park

Arenal Volcano National Park Weather in August

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

Planning a trip to Arenal Volcano National Park, Costa Rica this August? Here's what you need to know about the weather:

What to Expect in Arenal Volcano National Park in August

Arenal Volcano National Park, Costa Rica is a region in Costa Rica. August in Arenal Volcano National Park generally has warm temperatures, with heavy precipitation.

Temperatures

The average maximum temperatures are warm and range from 27°C (81°F) in La Fortuna to 29°C (84°F) in Nuevo Arenal. Nighttime temperatures generally drop to 22°C (72°F) in Nuevo Arenal and 22°C (72°F) in La Fortuna.

To explore the conditions in Arenal Volcano National Park, Costa Rica in more detail, check the map below.

Precipitation

In August, precipitation varies across different areas. From heavy rainfall in La Fortuna with an average of 217 mm (8.5 in) to heavy rainfall in El Castillo de La Fortuna with 254 mm (10 in).

Average sunshine

Most areas see decent amounts of sunshine this month. El Castillo de La Fortuna gets around 171 hours of sunlight, providing a pleasant balance of sun and clouds. If you'd prefer more guaranteed sunshine, our weather planner can show you sunnier spots around the world.

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 August

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 August for some of the most popular destinations in Arenal Volcano National Park, Costa Rica?

Temperature range in Arenal Volcano National Park (August)

Precipitation variation in Arenal Volcano National Park (August)

El Castillo de La Fortuna

In August El Castillo de La Fortuna generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 21°C (70°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
28°C (82°F)
28°C (82°F)
29°C (84°F)
Min temperature
21°C (70°F)
21°C (70°F)
21°C (70°F)
Monthly sun hours
164 hours
171 hours
159 hours
Monthly rainfall
251 mm (9.9 in)
254 mm (10 in)
320 mm (13 in)
Monthly rainy days
22 days
23 days
24 days
Weather conditions

Nuevo Arenal

In August Nuevo Arenal generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
29°C (84°F)
29°C (84°F)
29°C (84°F)
Min temperature
22°C (72°F)
22°C (72°F)
22°C (72°F)
Monthly rainfall
247 mm (9.7 in)
243 mm (9.6 in)
303 mm (12 in)
Monthly rainy days
22 days
22 days
24 days
Weather conditions

La Fortuna

In August La Fortuna generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
26°C (79°F)
27°C (81°F)
27°C (81°F)
Min temperature
22°C (72°F)
22°C (72°F)
22°C (72°F)
Monthly rainfall
198 mm (7.8 in)
217 mm (8.5 in)
331 mm (13 in)
Monthly rainy days
20 days
20 days
20 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 August

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

City Weather Day temp Night temp Rainfall
El Castillo de La Fortuna 28°C (82°F) 21°C (70°F) 254 mm (10 in)
Nuevo Arenal 29°C (84°F) 22°C (72°F) 243 mm (9.6 in)
La Fortuna 27°C (81°F) 22°C (72°F) 217 mm (8.5 in)

Arenal Volcano National Park weather in August: frequently asked questions

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

Expect unpleasant weather across Arenal Volcano National Park, Costa Rica in August. The popular destination of El Castillo de La Fortuna averages 28°C (82°F) by day and 21°C (70°F) at night during this month.

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

Daytime temperatures in El Castillo de La Fortuna peak at roughly 28°C (82°F) in August, dropping to about 21°C (70°F) overnight.

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

Expect plenty of rainfall. El Castillo de La Fortuna records an average of 254 mm (10 in) in August, putting it among the wetter months for Arenal Volcano National Park, Costa Rica.

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

Given the typically unpleasant weather conditions in El Castillo de La Fortuna, August may not be the ideal time to visit Arenal Volcano National Park, Costa Rica.

Generally speaking, the best visiting conditions can be found in January, February and March offering mostly perfect weather in El Castillo de La Fortuna. The weather in May, June, September and October, on the other hand, tends to be poor.

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

Need travel inspiration? Check out our bucket list articles and be inspired.