This report describes the typical weather at the Port Aransas (Port Aransas, Texas, United States) weather station over the course of an average March. It is based on the historical records from 2006 to 2012. Earlier records are either unavailable or unreliable.
Port Aransas, Texas 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 (70%), grasslands (17%), croplands (7%), lakes and rivers (3%), and built-up areas (3%).
The month of March is characterized by rising daily high temperatures, with daily highs increasing from 70°F to 75°F over the course of the month, exceeding 80°F or dropping below 64°F only one day in ten.
Over the course of March, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 49 minutes, implying an average day-over-day increase of 1.6 minutes.
The shortest day of the month is March 1 with 11:37 hours of daylight; the longest day is March 31 with 12:27 hours of daylight.
The earliest sunrise is at 6:43am on March 10; the latest sunset is at 7:46pm on March 31; the latest sunrise is at 7:42am on March 11; the earliest sunset is at 6:29pm on March 1.
Daylight saving time (DST) starts at 3:00am on March 11, 2012, shifting sunrise and sunset to an hour later.
The median cloud cover ranges from 13% (mostly clear) to 32% (mostly clear). The trend is for the sky to be clearing rapidly with the median cloud cover decreasing by 19% from the start to the end of the month.
On March 31, the clearest day of the month, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 17% of the time.
On March 1, the cloudiest day of the month, the sky is overcast, mostly cloudy, or partly cloudy 33% of the time, and clear or mostly clear 47% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around March 1, occurring in 32% of days. Precipitation is least likely around March 31, occurring in 22% of days.
Throughout March, the most common forms of precipitation are light rain, thunderstorms, and heavy rain.
Light rain is the most severe precipitation observed during 46% of those days with precipitation. It is most likely around March 15, when it is observed during 15% of all days.
Thunderstorms are the most severe precipitation observed during 26% of those days with precipitation. They are most likely around March 28, when it is observed during 8% of all days.
Heavy rain is the most severe precipitation observed during 14% of those days with precipitation. It is most likely around March 10, when it is observed during 5% 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 68% (mildly humid) to 96% (very humid) over the course of a typical March, rarely dropping below 43% (comfortable) and reaching as high as 100% (very humid).
The air is driest around March 30, at which time the relative humidity drops below 81% (humid) three days out of four; it is most humid around March 25, rising above 96% (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 March, the dew point typically varies from 53°F (very comfortable) to 69°F (muggy) and is rarely below 38°F (dry) or above 75°F (very muggy).
Over the course of March typical wind speeds vary from 3 mph to 17 mph (light air to moderate breeze), rarely exceeding 24 mph (fresh breeze).
The highest average wind speed of 12 mph (gentle breeze) occurs around March 29, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 11 mph (gentle breeze) occurs around March 8, at which time the average daily maximum wind speed is 16 mph (moderate breeze).