This report describes the typical weather at the Heraklion International Airport (Nikos Kazantzakis) (Heraklion (Iraklion), Greece) weather station over the course of an average October. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Heraklion (Iraklion) has a mediterranean climate with dry hot summers and mild winters. The area within 25 mi of this station is covered by croplands (51%), oceans and seas (45%), and shrublands (2%).
The month of October is characterized by falling daily high temperatures, with daily highs decreasing from 77°F to 70°F over the course of the month, exceeding 83°F or dropping below 63°F only one day in ten.
Over the course of October, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 1:04 hours, implying an average day-over-day decrease of 2.1 minutes.
The shortest day of the month is October 31 with 10:45 hours of daylight; the longest day is October 1 with 11:49 hours of daylight.
The earliest sunrise is at 6:37am on October 28; the latest sunset is at 7:03pm on October 1; the latest sunrise is at 7:36am on October 27; the earliest sunset is at 5:25pm on October 31.
Daylight saving time (DST) ends at 3:00am on October 28, 2012, shifting sunrise and sunset to an hour earlier.
The median cloud cover ranges from 30% (mostly clear) to 49% (partly cloudy). The trend is for the sky to be becoming rapidly cloudier with the median cloud cover increasing by 19% from the start to the end of the month.
On October 1, the clearest day of the month, the sky is clear, mostly clear, or partly cloudy 79% of the time, and overcast or mostly cloudy 12% of the time.
On October 31, the cloudiest day of the month, the sky is overcast, mostly cloudy, or partly cloudy 53% of the time, and clear or mostly clear 41% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around October 31, occurring in 30% of days. Precipitation is least likely around October 1, occurring in 15% of days.
Throughout October, the most common forms of precipitation are moderate rain, thunderstorms, and light rain.
Moderate rain is the most severe precipitation observed during 39% of those days with precipitation. It is most likely around October 31, when it is observed during 13% of all days.
Thunderstorms are the most severe precipitation observed during 39% of those days with precipitation. They are most likely around October 31, when it is observed during 11% of all days.
Light rain is the most severe precipitation observed during 20% of those days with precipitation. It is most likely around October 29, when it is observed during 6% of all days.
Either snow is exceptionally unlikely to fall at this location in October or this station does not reliably report precipitation types.
The relative humidity typically ranges from 51% (mildly humid) to 83% (humid) over the course of a typical October, rarely dropping below 36% (comfortable), or exceeding 94% (very humid).
The air is driest around October 1, at which time the relative humidity drops below 58% (mildly humid) three days out of four; it is most humid around October 30, rising above 77% (humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a typical October, the dew point typically varies from 49°F (dry) to 63°F (mildy humid) and is rarely below 41°F (dry) or above 69°F (muggy).
The time of the month between October 1 and October 31 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of October typical wind speeds vary from 0 mph to 16 mph (calm to moderate breeze), rarely exceeding 27 mph (strong breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around October 31, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around October 1, at which time the average daily maximum wind speed is 15 mph (moderate breeze).