What’s the climate like in Arenal?
The current climate of Arenal features average monthly temperatures ranging from highs of 35°C during the day to lows of 31°C. The average yearly temperature is around 33°C. At night, temperatures in the colder months average around 22°C and in the warmer months around 24°C.
The highest temperature recorded in Arenal in recent years was 58°C in January 2018. The lowest daytime temperature recorded was 24°C in October 2017.
On average, Arenal receives 1779 mm of precipitation each year. For comparison, London gets 701 mm of precipitation annually.
Best time to visit Arenal?
The best time to visit Arenal for sunny weather is January through April, July and December. During this period, you'll have good temperatures and not too much rain, making it a great time to visit Arenal. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of Arenal
The climate table of Arenal shows the average temperatures, precipitation, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 33 | 34 | 35 | 35 | 34 | 32 | 33 | 33 | 32 | 31 | 31 | 33 |
| Temp. min (°C) | 22 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 22 |
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| Precipitation (mm) | 9,4 | 0,1 | 0,5 | 25 | 212 | 225 | 108 | 259 | 349 | 395 | 185 | 11 |
| UV Index | 8 | 9 | 10 | 9 | 8 | 7 | 8 | 8 | 8 | 7 | 7 | 8 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 33°C
- Highest temperature: 35°C in March and April
- Lowest temperature: 31°C in October and November
- Precipitation: 1779 mm per year, averaging 148 mm per month
- Driest months: 0,1 mm in February, 0,5 mm in March and 9,4 mm in January
- Wettest months: 395 mm in October, 349 mm in September and 259 mm in August
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Table of Contents
Average Temperature per Month in Arenal
This graph shows the average maximum temperatures per month in Arenal, Costa Rica. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Arenal
This graph shows how much precipitation Arenal, Costa Rica, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average UV Index per Month in Arenal
This graph shows the average UV index per month in Arenal, Costa Rica. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Arenal
This graph shows the average yearly temperature in Arenal, Costa Rica. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Arenal
This chart shows the total yearly precipitation in Arenal, Costa Rica, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Weather experiences in Arenal
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Average Weather in Arenal by Month
Click on a month below to see detailed weather info for Arenal. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
