Costa RicaAverage weather for Arenal in October
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.
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. There are plenty of days with a good chance of precipitation.
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. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In October, there is an average of 395 mm of precipitation, spread over 19 days. The wind speed is around 3 Bft, mostly coming from the South.
Arenal in October |
New York | ||
|---|---|---|---|
 Average temperature |
31°C | 21°C | |
 Max. temperature |
32°C | 26°C | |
| Min. temperature |
30°C | -5°C | |
 Total precipitation |
395 mm | 119 mm | |
| Rainy days |
19 days | 13 days | |
September
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.
Is October a good time to visit Arenal?
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.
The hurricane season in Arenal runs from June to November.
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.
Check out the climate of Arenal for all months and discover the best travel time
Daily Temperature in October in Arenal
This chart shows the average daily high and low temperatures in October for Arenal, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in October in Arenal
The chart below shows the average daily precipitation in October for Arenal, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for October, you can expect about 19 days of precipitation in Arenal.
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.
Temperature in October in Arenal over the years
This chart shows the average temperature in October in Arenal, measured in degrees Celsius, over the past few years.
Total precipitation in October in Arenal over the years
This chart shows the average precipitation in October in Arenal, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
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.
Weather experiences in October in Arenal
Have you been to Arenal in October?
Share your weather experience in October in Arenal.
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.
