Climate Insights for Arenal

The climate in Arenal is hot. The average annual temperature is 28°C and approximately 1,818 mm of precipitation falls per year. May is the wettest month, receiving around 278 mm of rainfall. Arenal sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in Arenal is hot. The average annual temperature is 83°F and approximately 71.6 in of precipitation falls per year. May is the wettest month, receiving around 11 in of rainfall. Arenal sits near the equator, so seasonal temperature differences are minimal throughout the year.

Arenal sees moderate temperature variation throughout the year, ranging from 24°C to 36°C. February is the hottest month, with daytime highs reaching 36°C and an average of 30°C. October is the coolest month, with minimum temperatures around 24°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.Arenal sees moderate temperature variation throughout the year, ranging from 75°F to 96°F. February is the hottest month, with daytime highs reaching 96°F and an average of 86°F. October is the coolest month, with minimum temperatures around 75°F and an average of 80°F. On average, daily temperatures fluctuate by about 15°F between overnight lows and afternoon highs.

Arenal is a fairly wet location, receiving approximately 1,818 mm of precipitation annually, which averages out to around 151 mm per month. The wettest month is May, averaging 278 mm of rainfall. October and April also tend to see above-average precipitation. The driest month is February, with just 20 mm. That's 258 mm less than May, 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 71.6 in of precipitation annually, which averages out to around 5.9 in per month. The wettest month is May, averaging 10.9 in of rainfall. October and April also tend to see above-average precipitation. The driest month is February, with just 0.8 in. That's 10.2 in less than May, 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 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.Arenal is relatively calm, with an average annual wind speed of 2mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 3mph, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 2mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1mph gap 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.