December weather - Winter 2023

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 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

the colorful red night sky in the seaside city of Galveston in Texas

Weather in December

Finally, December sees the full onset of winter with moderately chilly temperatures and the sea cooling down to 60.3°F. This decrease in water temperature coincides with the year's lowest average temperature of 54.9°F, making December the coldest month of the year. Despite the cloud cover being at its highest of 47% and a constant breeze of 12.1mph, December allows residents and tourists to enjoy a variety of indoor activities and celebrate the holiday season. The sharp decrease in sunshine hours heralds the end of the year, setting the stage for January and the new weather cycle to come.

Temperature

In the transition to December, Galveston observes a minor drop in the average high-temperature, shifting from a pleasant 68.9°F in November to a comfortable 62.6°F. Nights in December in Galveston, Texas, exhibit a minor reduction to an average low temperature of 54.9°F.

Humidity

The average relative humidity in December in Galveston is 79%.

Rainfall

In December, in Galveston, the rain falls for 13 days. Throughout December, 1.38" of precipitation is accumulated. In Galveston, during the entire year, the rain falls for 161.9 days and collects up to 24.33" of precipitation.

Snowfall

March through December are months without snowfall in Galveston.

Ocean temperature

In Galveston, in December, the average water temperature is 60.4°F.
Note: Swimming is not a pleasurable activity for the majority in water at 60.4°F. Breathing control gets harder as the water temperature dips from 69.8°F to 59°F.

Daylight

December has the shortest days of the year in Galveston, with an average of 10h and 18min of daylight.
On the first day of the month, sunrise is at 6:55 am and sunset at 5:20 pm. On the last day of December, in Galveston, sunrise is at 7:13 am and sunset at 5:31 pm CST.

Sunshine

With an average of 4.9h of sunshine, December has the least sunshine of the year in Galveston, Texas.

UV index

January and December, with an average maximum UV index of 4, are months with the lowest UV index in Galveston. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 4 during December translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.

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FAQ

What is the average December temperature in Galveston?

The average high-temperature, in December, in Galveston, is 62.6°F, while the average low-temperature is 54.9°F. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in September is computed to be 93.2°F.

What is the average humidity in December in Galveston?

The average relative humidity in December in Galveston is 79%.

How many days does it rain in December in Galveston?

In Galveston, Texas, during December, the rain falls for 13 days and regularly aggregates up to 1.38" of precipitation.

When it does not snow in Galveston?

In Galveston, Texas, snow does not fall in March through December.

Does it snow in Galveston in December?

In Galveston, Texas, in December, it doesn't snow. In January, it regularly snows.

What is the ocean temperature in December in Galveston?

In Galveston, Texas, in December, the average water temperature is 60.4°F. Swimming in 60.4°F is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F.

What is the month with the shortest days in Galveston?

The month with the shortest days in Galveston is December, with an average of 10h and 18min of daylight.

How many hours of daylight does Galveston have in December?

In Galveston, Texas, the average day length in December is 10h and 19min.

When are sunrise and sunset in December in Galveston?

In December, on the first day of the month, sunrise is at 6:55 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:31 pm CST.

What is the month with the least sunshine in Galveston?

With an average of 4.9h of sunshine, December has the least sunshine of the year in Galveston.

How many hours of sunshine does Galveston have in December?

The average sunshine duration in December in Galveston is 4.9h.

What is the month with the lowest UV index in Galveston?

January and December, with an average maximum UV index of 4, are months with the lowest UV index in Galveston.

What is the UV index reading in December in Galveston?

The average daily maximum UV index in December is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

68.9°F

62.6°F

59.7°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.7mph

12.9mph

12.8mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

10.4

10.1

Average snowfall days

0.3

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

17.7

14.3

18.2

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Galveston, TX

Average high temperature in December: 62.6°F

The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is January (59.7°F).

Average low temperature in December: 54.9°F

The month with the highest average low temperature is August (81.9°F).
The coldest month (with the lowest average low temperature) is January (51.6°F).

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Average pressure in December
Galveston, TX

Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Galveston, TX

Average wind speed in December: 12.1mph

The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (9.4mph).

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Average humidity in December
Galveston, TX

Average humidity in December: 79%

The months with the highest relative humidity are February and March (81%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
Galveston, TX

Average rainfall in December: 1.38"

The wettest month (with the highest rainfall) is September (4.29").
The driest months (with the least rainfall) are February and March (0.75").

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Average rainfall days in December
Galveston, TX

Average rainfall days in December: 13 days

The month with the highest number of rainy days is September (19.9 days).
The month with the least rainy days is January (10.1 days).

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Average snowfall days in December
Galveston, TX

Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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Average sea temperature in December
Galveston, TX

Average sea temperature in December: 60.3°F

The best month for swimming (with the highest average sea temperature) is August (87.2°F).
The coldest month (with the lowest average sea temperature) is January (56.5°F).

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Average daylight in December /
Average sunshine in December
Galveston, TX

Average daylight in December: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

Average sunshine in December: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

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Average sunshine days in December
Galveston, TX

Average sunshine days in December: 14.3 days

The month with the most sunshine days is January (18.2 days).
The month with the least sunshine days is August (8.3 days).

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Average UV index in December
Galveston, 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).

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Average cloud cover in December
Galveston, TX

Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June, July, August and October (Cloud cover 26).

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Average visibility in December
Galveston, 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).

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December weather forecast
Galveston, TX

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