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Costa RicaThe weather in October in Arenal
It's hot in October in Arenal with an average temperature of 31°C. Temperatures this month range from a low of 30°C to a high of 32°C. At night, you can expect temperatures between 23°C and 23°C.
Looking for sun? October isn’t a good month to be in Arenal. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in October for Arenal, Costa Rica. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 34°C in 2015, Arenal reached the highest temperature in October over the past 10 years. The lowest daytime temperature in this month was 24°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 18°C to a highest value of 25°C.
Rainfall amount
In October, there is an average of 395 mm of precipitation, spread over 28 days. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in October for Arenal
Click on any day in October to get detailed info about the usual weather on that day in Arenal. Check out the historical temperatures and precipitation over the past 10 years on this day.
October weather comparison
| Arenal | New York | |
|---|---|---|
| Average temperature | 31°C | 21°C |
| Max. temperature | 32°C | 26°C |
| Min. temperature | 23°C | -5°C |
| Total precipitation | 395 mm | 119 mm |
| Rainy days | 28 days | 13 days |
Start of October
The month of October starts in Arenal with hot temps, averaging around 31°C during the day and nights around 23°C.
Mid October
By mid-October, daytime temps stay steady at around 31°C, with nights around 23°C. There’s a high chance of precipitation during this time.
End of October
By the end of October, the average daytime temperature in Arenal is around 32°C, while nighttime temps are about 23°C. There’s a significant chance of many days with precipitation.
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UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
The hurricane season in Arenal runs from June to November.
Check out the climate of Arenal for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in October in Arenal, Costa Rica. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in October in Arenal
Temperature in October in Arenal over the years
Precipitation charts
These charts show the average amount of precipitation in October in Arenal, Costa Rica. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in October in Arenal
Total precipitation in October in Arenal over the years
Daily UV index in October in Arenal
This chart shows the average daily UV index in October in Arenal, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in October 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.