Temperature in Arenal Volcano National Park in September

Daytime highs, nighttime lows and the warmest cities in Arenal Volcano National Park, Costa Rica this September.

Arenal Volcano National Park, Costa Rica, a region in Costa Rica, experiences high average maximum daytime temperatures in September, ranging 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.

What is the temperature of the different cities in Arenal Volcano National Park, Costa Rica in September?

Find the average daytime temperatures in September for the most popular destinations in Arenal Volcano National Park on the map below. Click on a destination dot for more detailed information.

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Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit Arenal Volcano National Park, check out our Arenal Volcano National Park's climate page.

See also: Arenal Volcano National Park weather by month.

Best Places to Visit in Arenal Volcano National Park in September

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

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

See all September weather averages, cities and regions in Arenal Volcano National Park

Arenal Volcano National Park temperatures in September: frequently asked questions

How hot does it get in Arenal Volcano National Park, Costa Rica in September?

Daytime temperatures in El Castillo de La Fortuna typically peak at 29°C (84°F) in September, putting it in the high range.

How cold does it get at night in Arenal Volcano National Park, Costa Rica in September?

Nighttime temperatures in El Castillo de La Fortuna typically drop to around 21°C (70°F) in September.

What is the warmest city in September in Arenal Volcano National Park, Costa Rica?

Based on our systematic data collection, Nuevo Arenal has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 29°C (84°F), while at night it goes down to an approximate temperature of 22°C (72°F).

What is the coldest city in September in Arenal Volcano National Park, Costa Rica?

Our database indicates that in September, La Fortuna is the city with the coolest temperatures in Arenal Volcano National Park, Costa Rica. You can expect daytime highs of 27°C (81°F) and nighttime lows close to 22°C (72°F).

How much sun does Arenal Volcano National Park, Costa Rica get in September?

Most cities enjoy a balanced amount of sunshine, with around 159 hours of sunlight anticipated in El Castillo de La Fortuna. This ensures the days are neither too dim nor excessively sunny.

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.

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