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 days 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 arrival of December correlates with a minor temperature reduction, down from November's agreeable 68.9°F (20.5°C) to a refreshing 63.5°F (17.5°C). December is noted for a mean low-temperature of 50.9°F (10.5°C).Humidity
February and December, with an average relative humidity of 79%, are the most humid months.Rainfall
In Bayou Vista, in December, during 8 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. Throughout the year, there are 128.6 rainfall days, and 13.27" (337mm) of precipitation is accumulated.Snowfall
February through December are months without snowfall.Daylight
December has the shortest days of the year, with an average of 10h and 18min of daylight.On the first day of December in Bayou Vista, sunrise is at 6:43 am and sunset at 5:05 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 5:16 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.3h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: An average UV index of 3 in December transforms into this advice:
Be vigilant - Suggestions to stave off sun damage are provided. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the most humid month in Bayou Vista?
What is the average humidity in December?
How many days does it rain in December?
When it does not snow?
Does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Bayou Vista, LA
- Average high temperature in December: 63.5°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (60.1°F).
- Average low temperature in December: 50.9°F
The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (47.1°F).
Average pressure in December
Bayou Vista, LA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.96"Hg).
Average wind speed in December
Bayou Vista, LA
- Average wind speed in December: 8.5mph
The windiest months (with the highest average wind speed) are February and April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Bayou Vista, LA
- Average humidity in December: 79%
The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Bayou Vista, LA
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is August (2.48").
The driest month (with the least rainfall) is March (0.43").
Average rainfall days in December
Bayou Vista, LA
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is August (20 days).
The month with the least rainy days is November (6 days).
Average snowfall days in December
Bayou Vista, LA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Bayou Vista, LA
- 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: 5h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Bayou Vista, LA
- Average sunshine days in December: 20.1 days
The month with the most sunshine days is November (23 days).
The month with the least sunshine days is August (6.9 days).
Average UV index in December
Bayou Vista, LA
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Bayou Vista, LA
- Average cloud cover in December: 45
The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 23).
Average visibility in December
Bayou Vista, LA
- 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).
Bayou Vista, Louisiana, USA
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