Climate Insights for Arenal

The climate in Arenal is hot. The average annual temperature is 26°C and approximately 1,356 mm of precipitation falls per year. September is the wettest month, receiving around 372 mm of rainfall. Arenal is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, May. The coldest months are March, April, February, when temperatures can drop to 22°C.The climate in Arenal is hot. The average annual temperature is 79°F and approximately 53.4 in of precipitation falls per year. September is the wettest month, receiving around 14.7 in of rainfall. Arenal is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, May. The coldest months are March, April, February, when temperatures can drop to 72°F.

Arenal has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is July, when average highs reach 31°C and the mean temperature sits around 28°C. March is the coolest month, with minimum temperatures around 22°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.Arenal has relatively stable temperatures year-round, staying within a 15°F range. The warmest month is July, when average highs reach 87°F and the mean temperature sits around 82°F. March is the coolest month, with minimum temperatures around 72°F and an average of 77°F. Daily temperature variation is modest, with an average difference of 10°F between highs and lows.

Arenal is a fairly wet location, receiving approximately 1,356 mm of precipitation annually, which averages out to around 113 mm per month. The wettest month is September, averaging 372 mm of rainfall. August and October also tend to see above-average precipitation. The driest month is April, with just 1 mm. That's 371 mm less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Arenal is a fairly wet location, receiving approximately 53.4 in of precipitation annually, which averages out to around 4.4 in per month. The wettest month is September, averaging 14.6 in of rainfall. August and October also tend to see above-average precipitation. The driest month is April, with just 0 in. That's 14.6 in less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Arenal is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.Arenal is mildly breezy, with an average annual wind speed of 5mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is June, averaging 6mph, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2mph between the calmest and windiest months.

The table below shows monthly climate averages for Arenal based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Arenal based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.