Average Weather in October in Atenas Costa Rica
The lowest daily average high temperature is 82°F on October 21.
Daily low temperatures are around 68°F, rarely falling below 66°F or exceeding 71°F. The lowest daily average low temperature is 68°F on October 5.
For reference, on March 24, the hottest day of the year, temperatures in Atenas typically range from 70°F to 89°F, while on October 1, the coldest day of the year, they range from 68°F to 82°F.
Average High and Low Temperature in October
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in October
Ayene, Equatorial Guinea (6,548 miles away); Boyolali, Indonesia (11,413 miles); and Malasila, Philippines (10,105 miles) are the far-away foreign places with temperatures most similar to Atenas (view comparison).
The month of October in Atenas experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 92% to 84%.
The clearest day of the month is October 31, with clear, mostly clear, or partly cloudy conditions 16% of the time.
For reference, on June 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 94%, while on January 1, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 65%.
Cloud Cover Categories in October
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Atenas, the chance of a wet day over the course of October is rapidly decreasing, starting the month at 48% and ending it at 41%.
For reference, the year's highest daily chance of a wet day is 50% on October 7, and its lowest chance is 4% on January 26.
Probability of Precipitation in October
The average sliding 31-day rainfall during October in Atenas is rapidly decreasing, starting the month at 6.7 inches, when it rarely exceeds 12.9 inches or falls below 2.5 inches, and ending the month at 5.3 inches, when it rarely exceeds 10.2 inches or falls below 1.8 inches.
Average Monthly Rainfall in October
Over the course of October in Atenas, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 15 minutes, implying an average daily decrease of 31 seconds, and weekly decrease of 3 minutes, 35 seconds.
The shortest day of the month is October 31, with 11 hours, 46 minutes of daylight and the longest day is October 1, with 12 hours, 2 minutes of daylight.
Hours of Daylight and Twilight in October
The earliest sunrise of the month in Atenas is 5:25 AM on October 9 and the latest sunrise is 1 minute, 60 seconds later at 5:27 AM on October 31.
The latest sunset is 5:27 PM on October 1 and the earliest sunset is 14 minutes earlier at 5:14 PM on October 31.
Daylight saving time is not observed in Atenas during 2017.
For reference, on June 21, the longest day of the year, the Sun rises at 5:18 AM and sets 12 hours, 43 minutes later, at 6:00 PM, while on December 21, the shortest day of the year, it rises at 5:49 AM and sets 11 hours, 33 minutes later, at 5:22 PM.
Sunrise & Sunset with Twilight in October
The chance that a given day will be muggy in Atenas is rapidly decreasing during October, falling from 86% to 75% over the course of the month.
For reference, on June 4, the muggiest day of the year, there are muggy conditions 86% of the time, while on February 2, the least muggy day of the year, there are muggy conditions 7% of the time.
Humidity Comfort Levels in October
The average hourly wind speed in Atenas is essentially constant during October, remaining around 2.7 miles per hour throughout.
For reference, on February 25, the windiest day of the year, the daily average wind speed is 4.2 miles per hour, while on June 16, the calmest day of the year, the daily average wind speed is 2.4 miles per hour.
Average Wind Speed in October
Wind Direction in October
Atenas is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Atenas is essentially constant during October, remaining around 82°F throughout.
Average Water Temperature in October
Temperatures in Atenas are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season in October
The average accumulated growing degree days in Atenas are rapidly increasing during October, increasing by 713°F, from 7,070°F to 7,783°F, over the course of the month.
Growing Degree Days in October
The average daily incident shortwave solar energy in Atenas is essentially constant during October, remaining within 0.2 kWh of 3.9 kWh throughout.
The lowest average daily incident shortwave solar energy during October is 3.8 kWh on October 11.
Average Daily Incident Shortwave Solar Energy in October
For the purposes of this report, the geographical coordinates of Atenas are 9.975 deg latitude, -84.379 deg longitude, and 2,195 ft elevation.
The topography within 2 miles of Atenas contains very significant variations in elevation, with a maximum elevation change of 1,667 feet and an average elevation above sea level of 2,226 feet. Within 10 miles contains very significant variations in elevation (4,764 feet). Within 50 miles also contains extreme variations in elevation (11,283 feet).
The area within 2 miles of Atenas is covered by grassland (57%) and trees (34%), within 10 miles by grassland (45%) and trees (35%), and within 50 miles by trees (43%) and water (24%).
This report illustrates the typical weather in Atenas year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, Juan Santamaría International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Atenas.
At a distance of 19 kilometers from Atenas, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Atenas according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
Time zones for aiports and weather stations are provided by AskGeo.com .