This report describes the typical weather at the South Padre Island (South Padre Island, Texas, United States) weather station over the course of an average December. It is based on the historical records from 2010 to 2013. Earlier records are either unavailable or unreliable.
South Padre Island, 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 (63%), grasslands (26%), marshes (4%), and lakes and rivers (3%).
The month of December is characterized by gradually falling daily high temperatures, with daily highs ranging from 75Â°F to 72Â°F over the course of the month, exceeding 79Â°F or dropping below 55Â°F only one day in ten.
Over the course of December, the length of the day is essentially constant. The shortest day of the month is December 24 with 10:30 hours of daylight; the longest day is December 1 with 10:37 hours of daylight.
The earliest sunrise is at 6:59am on December 1; the latest sunset is at 5:48pm on December 31; the latest sunrise is at 7:16am on December 30; the earliest sunset is at 5:36pm on December 1.
Daylight saving time is observed in 2013 but it neither starts nor ends in December, so the entire month is in standard time.
The median cloud cover ranges from 40% (partly cloudy) to 49% (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 December 16, a representative day, the sky is clear or mostly clear 42% of the time, partly cloudy 6% 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 December 10, occurring in 50% of days. Precipitation is least likely around December 17, occurring in 44% of days.
Throughout December, the most common forms of precipitation are light rain, moderate rain, and thunderstorms.
Light rain is the most severe precipitation observed during 53% of those days with precipitation. It is most likely around December 1, when it is observed during 27% of all days.
Moderate rain is the most severe precipitation observed during 25% of those days with precipitation. It is most likely around December 31, when it is observed during 14% of all days.
Thunderstorms are the most severe precipitation observed during 19% of those days with precipitation. They are most likely around December 10, when it is observed during 10% of all days.
Either snow is exceptionally unlikely to fall at this location in December or this station does not reliably report precipitation types.
The relative humidity typically ranges from 60% (mildly humid) to 95% (very humid) over the course of a typical December, rarely dropping below 49% (comfortable) and reaching as high as 99% (very humid).
The air is driest around December 3, at which time the relative humidity drops below 67% (mildly humid) three days out of four; it is most humid around December 29, rising above 93% (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 December, the dew point typically varies from 46Â°F (dry) to 66Â°F (muggy) and is rarely below 31Â°F (dry) or above 71Â°F (very muggy).
The time of the month between December 2 and December 31 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of December typical wind speeds vary from 3 mph to 19 mph (light air to fresh breeze), rarely exceeding 23 mph (fresh breeze).
The highest average wind speed of 12 mph (gentle breeze) occurs around December 15, at which time the average daily maximum wind speed is 19 mph (fresh breeze).
The lowest average wind speed of 10 mph (gentle breeze) occurs around December 31, at which time the average daily maximum wind speed is 18 mph (fresh breeze).