This report describes the typical weather at the Cairns International Airport (Cairns, Australia) weather station over the course of an average October. It is based on the historical records from 1988 to 2012. Earlier records are either unavailable or unreliable.
Cairns has a tropical monsoon climate with short dry season. The area within 25 mi of this station is covered by oceans and seas (46%), forests (34%), and grasslands (20%).
The month of October is characterized by gradually rising daily high temperatures, with daily highs around 84°F throughout the month, exceeding 88°F or dropping below 81°F only one day in ten.
Over the course of October, the length of the day is essentially constant. The shortest day of the month is October 1 with 12:15 hours of daylight; the longest day is October 31 with 12:42 hours of daylight.
The earliest sunrise is at 5:40am on October 31; the latest sunset is at 6:22pm on October 30; the latest sunrise is at 6:00am on October 1; the earliest sunset is at 6:14pm on October 1.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover ranges from 35% (mostly clear) to 43% (partly cloudy). The trend is for the sky to be becoming cloudier with the median cloud cover increasing by 8% from the start to the end of the month.
On October 16, a representative day, the sky is clear or mostly clear 51% of the time, partly cloudy 21% of the time, and mostly cloudy or overcast 21% 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 46% of days. Precipitation is least likely around October 5, occurring in 36% of days.
Throughout October, the most common forms of precipitation are moderate rain and light rain.
Moderate rain is the most severe precipitation observed during 54% of those days with precipitation. It is most likely around October 31, when it is observed during 24% of all days.
Light rain is the most severe precipitation observed during 31% of those days with precipitation. It is most likely around October 31, when it is observed during 14% 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 49% (comfortable) to 89% (very humid) over the course of a typical October, rarely dropping below 38% (comfortable) and reaching as high as 95% (very humid).
The air is driest around October 1, at which time the relative humidity drops below 55% (mildly humid) three days out of four; it is most humid around October 17, rising above 85% (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 60°F (comfortable) to 70°F (muggy) and is rarely below 54°F (very comfortable) or above 74°F (very muggy).
Over the course of October typical wind speeds vary from 1 mph to 15 mph (light air to moderate breeze), rarely exceeding 21 mph (fresh breeze).
The highest 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).
The lowest average wind speed of 8 mph (gentle breeze) occurs around October 31, at which time the average daily maximum wind speed is 15 mph (moderate breeze).