Average Weather in December in Jamaica Beach Texas, United States
Daily high temperatures decrease by 6°F, from 67°F to 62°F, rarely falling below 50°F or exceeding 76°F.
Daily low temperatures decrease by 6°F, from 56°F to 50°F, rarely falling below 39°F or exceeding 68°F.
For reference, on August 12, the hottest day of the year, temperatures in Jamaica Beach typically range from 80°F to 89°F, while on January 6, the coldest day of the year, they range from 50°F to 61°F.
Average High and Low Temperature in December
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in December
The month of December in Jamaica Beach experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 39% to 47%.
The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 61% of the time.
For reference, on August 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 54%, while on October 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 69%.
Cloud Cover Categories in December
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Jamaica Beach, the chance of a wet day over the course of December is essentially constant, remaining around 27% throughout.
For reference, the year's highest daily chance of a wet day is 42% on September 4, and its lowest chance is 21% on April 1.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Jamaica Beach is essentially constant, remaining about 3.9 inches throughout, and rarely exceeding 7.2 inches or falling below 1.1 inches.
Average Monthly Rainfall in December
Over the course of December in Jamaica Beach, the length of the day is essentially constant. The shortest day of the month is December 21, with 10 hours, 17 minutes of daylight and the longest day is December 1, with 10 hours, 25 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Jamaica Beach is 6:56 AM on December 1 and the latest sunrise is 17 minutes later at 7:13 AM on December 31.
The earliest sunset is 5:21 PM on December 1 and the latest sunset is 11 minutes later at 5:32 PM on December 31.
Daylight saving time is observed in Jamaica Beach during 2018, but it neither starts nor ends during December, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:21 AM and sets 14 hours, 1 minute later, at 8:22 PM, while on December 21, the shortest day of the year, it rises at 7:09 AM and sets 10 hours, 17 minutes later, at 5:26 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in December
The chance that a given day will be muggy in Jamaica Beach is rapidly decreasing during December, falling from 22% to 9% over the course of the month.
For reference, on July 16, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 29, the least muggy day of the year, there are muggy conditions 5% of the time.
Humidity Comfort Levels in December
The average hourly wind speed in Jamaica Beach is essentially constant during December, remaining within 0.2 miles per hour of 12.2 miles per hour throughout.
For reference, on December 25, the windiest day of the year, the daily average wind speed is 12.3 miles per hour, while on August 15, the calmest day of the year, the daily average wind speed is 8.5 miles per hour.
The highest daily average wind speed during December is 12.3 miles per hour on December 26.
Average Wind Speed in December
Wind Direction in December
Jamaica Beach is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Jamaica Beach is decreasing during December, falling by 5°F, from 67°F to 62°F, over the course of the month.
Average Water Temperature in December
While it does not do so every year, freezing temperatures are seen in Jamaica Beach over some winters. The day least likely to be in the growing season is January 16, with a 73% chance.
Time Spent in Various Temperature Bands and the Growing Season in December
The average accumulated growing degree days in Jamaica Beach are increasing during December, increasing by 280°F, from 7,374°F to 7,654°F, over the course of the month.
Growing Degree Days in December
The average daily incident shortwave solar energy in Jamaica Beach is essentially constant during December, remaining within 0.1 kWh of 3.1 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 3.0 kWh on December 24.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Jamaica Beach are 29.190 deg latitude, -94.980 deg longitude, and 0 ft elevation.
The topography within 2 miles of Jamaica Beach is essentially flat, with a maximum elevation change of 7 feet and an average elevation above sea level of 1 foot. Within 10 miles is also essentially flat (16 feet). Within 50 miles is essentially flat (138 feet).
The area within 2 miles of Jamaica Beach is covered by water (63%) and herbaceous vegetation (19%), within 10 miles by water (70%) and herbaceous vegetation (16%), and within 50 miles by water (57%) and cropland (18%).
This report illustrates the typical weather in Jamaica Beach year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Jamaica Beach.
For each station, the records are corrected for the elevation difference between that station and Jamaica Beach according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Jamaica Beach is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Jamaica Beach and a given station.
The stations contributing to this reconstruction are: Scholes Field (73%, 15 kilometers, northeast); Pearland Regional Airport (14%, 45 kilometers, northwest); and Texas Gulf Coast Regional Airport (13%, 48 kilometers, west).
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Time zones for aiports and weather stations are provided by AskGeo.com .