Normal weather in Arenal in September
The weather in Arenal in September has an average temperature of around 31°C during the day. On average, September sees 326 mm of rain in Arenal. The wind speed is 3 Beaufort and mainly comes from Southwest.
After August, September in Arenal starts with a temperature of 32°C and ends around October at 31°C.
The hurricane season in Arenal lasts from early June to late November.
September averages for Arenal
 Average temperature | 31°C |
 Highest daytime temperature | 32°C |
| Lowest daytime temperature | 30°C |
 Total rainfall | 326 mm |
| Rainy days | 25 days |
Temperature per day in September in Arenal
This graph shows the average daily maximum temperatures in September in Arenal, indicated in degrees Celsius.
Precipitation per day in September in Arenal
This graph shows the average daily precipitation in September in Arenal, indicated in millimeters.
UV index per day in September in Arenal
This graph shows the average daily UV index in September in Arenal.
Yearly temperature in September in Arenal
This graph shows the average yearly temperature in September in Arenal, measured in degrees Celsius, over the past years.
Yearly total precipitation in September in Arenal
This graph shows the average yearly precipitation in millimeters in September in Arenal, over the past years.
Average daily weather in September
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Experiences with the weather in September in Arenal
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Average weather in Arenal per month
Click on a month below to see in detail how the weather typically is in Arenal and what to expect. Based on the historical weather data of Arenal, you can view the average temperature, precipitation, wind, and UV index for each day of the month.