Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The transition into December is accompanied by a slight temperature decrease, with the average high-temperature shifting from a pleasant 71.2°F (21.8°C) in November to a refreshing 64.2°F (17.9°C). During the December nights, Rockport's temperature maintains an average close to the daytime highs, settling at a moderate 55.4°F (13°C).Humidity
In December, the average relative humidity is 78%.Rainfall
In December, the rain falls for 9.6 days. Throughout December, 1.1" (28mm) of precipitation is accumulated. In Rockport, during the entire year, the rain falls for 129.4 days and collects up to 17.28" (439mm) of precipitation.Snowfall
February and December are months with snowfall. The months with the most snowfall are February and December, with an average 0.04" (1mm) of accumulated snow.Ocean temperature
In Rockport, the average seawater temperature in December is 65.1°F (18.4°C).Note: The majority of individuals find it unpleasurable to swim in 65.1°F (18.4°C). It becomes progressively harder to manage one's breathing as the water temperature falls below 69.8°F (21°C).
Daylight
With an average of 10h and 24min of daylight, December has the shortest days of the year.On the first day of December in Rockport, sunrise is at 7:02 am and sunset at 5:32 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:43 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 4.7h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 4 in December, converts into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What is the usual temperature for Rockport in December?
What is the average humidity in December in Rockport?
How many days does it rain in December in Rockport?
When does it snow the most in Rockport?
When does it start to snow in Rockport?
What is the ocean temperature in December in Rockport?
What is the month with the shortest days in Rockport?
What is the average length of the day in December in Rockport?
When is the sunrise / sunset in December in Rockport?
What is the month with the least sunshine in Rockport?
How long on average sun shines in December in Rockport?
What is the month with the lowest UV index in Rockport?
What is the UV index reading in December in Rockport?
Average temperature in December
Rockport, TX
- Average high temperature in December: 64.2°F
The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (62.2°F).
- Average low temperature in December: 55.4°F
The month with the highest average low temperature is August (81.1°F).
The coldest month (with the lowest average low temperature) is January (53.1°F).
Average pressure in December
Rockport, TX
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.9"Hg).
Average wind speed in December
Rockport, TX
- Average wind speed in December: 11.4mph
The windiest month (with the highest average wind speed) is May (13.3mph).
The calmest month (with the lowest average wind speed) is September (10.4mph).
Average humidity in December
Rockport, TX
- Average humidity in December: 78%
The months with the highest relative humidity are February, March and May (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Rockport, TX
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is September (3.31").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in December
Rockport, TX
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is September (18 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in December
Rockport, TX
- Average snowfall in December: 0.04"
The months with the highest snowfall are February and December (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Rockport, TX
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Rockport, TX
- Average sea temperature in December: 65.1°F
The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (61.1°F).
Average daylight in December /
Average sunshine in December
Rockport, TX
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in December
Rockport, TX
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is March (20.3 days).
The month with the least sunshine days is September (10.6 days).
Average UV index in December
Rockport, TX
- Average UV index in December: 4
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in December
Rockport, TX
- Average cloud cover in December: 48
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in December
Rockport, TX
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Rockport, Texas, USA
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