This report describes the typical weather at the Adelaide International Airport (Adelaide, Australia) weather station over the course of an average March. It is based on the historical records from 1990 to 2012. Earlier records are either unavailable or unreliable.
Adelaide has a mediterranean climate with dry warm summers and mild winters. The area within 25 mi of this station is covered by oceans and seas (43%), croplands (19%), grasslands (18%), forests (10%), and built-up areas (8%).
The month of March is characterized by falling daily high temperatures, with daily highs decreasing from 80°F to 74°F over the course of the month, exceeding 92°F or dropping below 66°F only one day in ten.
Over the course of March, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 1:06 hours, implying an average day-over-day decrease of 2.1 minutes.
The shortest day of the month is March 31 with 11:44 hours of daylight; the longest day is March 1 with 12:50 hours of daylight.
The earliest sunrise is at 7:03am on March 1; the latest sunset is at 7:53pm on March 1; the latest sunrise is at 7:28am on March 31; the earliest sunset is at 7:12pm on March 31.
Daylight savings time is observed in 2012 but it neither starts nor ends in March, so the entire month is in daylight time.
The median cloud cover ranges from 38% (mostly clear) to 47% (partly cloudy). The trend is for the sky to be becoming cloudier with the median cloud cover increasing by 9% from the start to the end of the month.
On March 16, a representative day, the sky is clear or mostly clear 43% of the time, partly cloudy 15% of the time, and mostly cloudy or overcast 25% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around March 31, occurring in 36% of days. Precipitation is least likely around March 1, occurring in 28% of days.
Throughout March, the most common forms of precipitation are light rain, moderate rain, and drizzle.
Light rain is the most severe precipitation observed during 43% of those days with precipitation. It is most likely around March 31, when it is observed during 15% of all days.
Moderate rain is the most severe precipitation observed during 39% of those days with precipitation. It is most likely around March 30, when it is observed during 15% of all days.
Drizzle is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around March 11, when it is observed during 4% of all days.
Either snow is exceptionally unlikely to fall at this location in March or this station does not reliably report precipitation types.
The relative humidity typically ranges from 34% (comfortable) to 82% (humid) over the course of a typical March, rarely dropping below 17% (dry), or exceeding 93% (very humid).
The air is driest around March 2, at which time the relative humidity drops below 43% (comfortable) three days out of four; it is most humid around March 29, 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 March, the dew point typically varies from 42°F (dry) to 57°F (comfortable) and is rarely below 34°F (dry) or above 64°F (mildy humid).
The time of the month between March 1 and March 31 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of March typical wind speeds vary from 1 mph to 18 mph (light air to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around March 1, at which time the average daily maximum wind speed is 18 mph (moderate breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around March 31, at which time the average daily maximum wind speed is 16 mph (moderate breeze).