This report describes the typical weather at the Adler-Sochi International Airport (Sochi, Russian Federation) weather station over the course of an average October. It is based on the historical records from 1997 to 2012. Earlier records are either unavailable or unreliable.
Sochi has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by oceans and seas (57%), forests (17%), croplands (15%), and grasslands (11%).
The month of October is characterized by rapidly falling daily high temperatures, with daily highs decreasing from 74°F to 64°F over the course of the month, exceeding 79°F or dropping below 56°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 1:24 hours, implying an average day-over-day decrease of 2.7 minutes.
The shortest day of the month is October 31 with 10:19 hours of daylight; the longest day is October 1 with 11:43 hours of daylight.
The earliest sunrise is at 7:18am on October 1; the latest sunset is at 7:01pm on October 1; the latest sunrise is at 7:55am on October 31; the earliest sunset is at 6:13pm on October 31.
Daylight savings time (DST) is not observed in 2012.
The median cloud cover ranges from 74% (partly cloudy) to 84% (mostly cloudy). The trend is for the sky to be becoming cloudier with the median cloud cover increasing by 10% 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 45% of the time, and overcast or mostly cloudy 55% of the time.
On October 29, the cloudiest day of the month, the sky is overcast, mostly cloudy, or partly cloudy 71% of the time, and clear or mostly clear 29% of the time.
The average probability that some form of precipitation will be observed in a given day is 47%, with little variation over the course of the month.
Throughout October, the most common forms of precipitation are thunderstorms, light rain, and moderate rain.
Thunderstorms are the most severe precipitation observed during 47% of those days with precipitation. They are most likely around October 1, when it is observed during 28% of all days.
Light rain is the most severe precipitation observed during 37% of those days with precipitation. It is most likely around October 29, when it is observed during 21% of all days.
Moderate rain is the most severe precipitation observed during 15% of those days with precipitation. It is most likely around October 31, when it is observed during 9% 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 57% (mildly humid) to 96% (very humid) over the course of a typical October, rarely dropping below 41% (comfortable) and reaching as high as 100% (very humid).
The air is driest around October 5, at which time the relative humidity drops below 64% (mildly humid) three days out of four; it is most humid around October 26, rising above 94% (very 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 44°F (dry) to 62°F (mildy humid) and is rarely below 36°F (dry) or above 67°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 11 mph (calm to gentle breeze), rarely exceeding 15 mph (moderate breeze).
The highest average wind speed of 5 mph (light breeze) occurs around October 5, at which time the average daily maximum wind speed is 11 mph (gentle breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around October 1, at which time the average daily maximum wind speed is 10 mph (gentle breeze).