This report describes the typical weather at the Barking Sands Airport (Waimea, Hawaii, United States) weather station over the course of an average year. It is based on the historical records from 2008 to 2012. Earlier records are either unavailable or unreliable.
Waimea, Hawaii has a tropical rainforest climate with no dry season. The area within 25 mi of this station is covered by oceans and seas (100%).
Over the course of a year, the temperature typically varies from 66°F to 86°F and is rarely below 62°F or above 88°F.
The warm season lasts from June 14 to October 22 with an average daily high temperature above 85°F. The hottest day of the year is July 20, with an average high of 86°F and low of 73°F.
The cold season lasts from January 4 to March 15 with an average daily high temperature below 80°F. The coldest day of the year is January 28, with an average low of 66°F and high of 79°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 10:47 hours of daylight; the longest day is June 20 with 13:29 hours of daylight.
The earliest sunrise is at 5:55am on June 7 and the latest sunset is at 7:27pm on July 3. The latest sunrise is at 7:21am on January 15 and the earliest sunset is at 5:54pm on November 25.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover is 27% (mostly clear) and does not vary substantially over the course of the year.
On September 27, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 76% of the time, and overcast or mostly cloudy 24% of the time.
On February 4, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 31% of the time, and clear or mostly clear 45% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around January 9, occurring in 32% of days. Precipitation is least likely around September 20, occurring in 14% of days.
Over the entire year, the most common forms of precipitation are light rain, heavy rain, and moderate rain.
Light rain is the most severe precipitation observed during 65% of those days with precipitation. It is most likely around July 25, when it is observed during 21% of all days.
Heavy rain is the most severe precipitation observed during 16% of those days with precipitation. It is most likely around December 18, when it is observed during 10% of all days.
Moderate rain is the most severe precipitation observed during 16% of those days with precipitation. It is most likely around February 8, when it is observed during 7% of all days.
During the warm season, which lasts from June 14 to October 22, there is a 21% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light rain (74% of days with precipitation have at worst light rain), moderate rain (15%), and heavy rain (10%).
During the cold season, which lasts from January 4 to March 15, there is a 26% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light rain (55% of days with precipitation have at worst light rain), moderate rain (23%), heavy rain (17%), and light snow (5%).
Either snow is exceptionally unlikely to fall at any time during the year at this location or this station does not reliably report precipitation types.
The relative humidity typically ranges from 49% (comfortable) to 81% (humid) over the course of the year, rarely dropping below 42% (comfortable), or exceeding 94% (very humid).
The air is driest around July 27, at which time the relative humidity drops below 51% (mildly humid) three days out of four; it is most humid around January 31, exceeding 73% (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 year, the dew point typically varies from 54°F (very comfortable) to 69°F (muggy) and is rarely below 49°F (dry) or above 71°F (very muggy).
The time of the year between January 7 and April 17 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of the year typical wind speeds vary from 0 mph to 14 mph (calm to moderate breeze), rarely exceeding 21 mph (fresh breeze).
The highest average wind speed of 7 mph (light breeze) occurs around January 17, at which time the average daily maximum wind speed is 14 mph (moderate breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around October 11, at which time the average daily maximum wind speed is 11 mph (gentle breeze).