This report describes the typical weather at the Honolulu International Airport (Honolulu, Hawaii, United States) 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.
Honolulu, Hawaii has a tropical savanna climate with dry winters. The area within 25 mi of this station is covered by oceans and seas (97%) and built-up areas (3%).
The month of October is characterized by gradually falling daily high temperatures, with daily highs around 86°F throughout the month, exceeding 90°F or dropping below 82°F only one day in ten.
Over the course of October, the length of the day is gradually decreasing. The shortest day of the month is October 31 with 11:21 hours of daylight; the longest day is October 1 with 11:56 hours of daylight.
The earliest sunrise is at 6:23am on October 1; the latest sunset is at 6:19pm on October 1; the latest sunrise is at 6:35am on October 31; the earliest sunset is at 5:56pm on October 31.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover is 51% (partly cloudy) and does not vary substantially over the course of the month.
On October 16, a representative day, the sky is clear or mostly clear 29% of the time, partly cloudy 39% of the time, and mostly cloudy or overcast 32% 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 41% of days. Precipitation is least likely around October 1, occurring in 37% of days.
Throughout October, the most common forms of precipitation are light rain and moderate rain.
Light rain is the most severe precipitation observed during 66% of those days with precipitation. It is most likely around October 31, when it is observed during 27% of all days.
Moderate rain is the most severe precipitation observed during 23% of those days with precipitation. It is most likely around October 3, 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 51% (mildly humid) to 84% (humid) over the course of a typical October, rarely dropping below 43% (comfortable), or exceeding 94% (very humid).
The air is driest around October 1, at which time the relative humidity drops below 54% (mildly humid) three days out of four; it is most humid around October 28, rising above 78% (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 64°F (mildy humid) to 70°F (muggy) and is rarely below 61°F (comfortable) or above 74°F (very muggy).
Over the course of October typical wind speeds vary from 3 mph to 17 mph (light air to moderate breeze), rarely exceeding 21 mph (fresh breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around October 1, at which time the average daily maximum wind speed is 17 mph (moderate breeze).
The lowest average wind speed of 10 mph (gentle breeze) occurs around October 22, at which time the average daily maximum wind speed is 17 mph (moderate breeze).