December weather forecast
Bayou Vista, LA

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Weather in December

December, the first month of the winter in Bayou Vista, is still a refreshing month, with an average temperature ranging between min 50.9°F (10.5°C) and max 63.5°F (17.5°C).

Temperature

Start of December brings a slight shift in the average high-temperature, dipping a bit from November's agreeable 68.9°F (20.5°C) to an enjoyable 63.5°F (17.5°C). During the nights in December, the temperature averages to a fresh 50.9°F (10.5°C).

Humidity

The months with the highest humidity in Bayou Vista are February and December, with an average relative humidity of 79%.

Rainfall

In December, in Bayou Vista, Louisiana, the rain falls for 8 days. Throughout December, 0.87" (22mm) of precipitation is accumulated. In Bayou Vista, during the entire year, the rain falls for 128.6 days and collects up to 13.27" (337mm) of precipitation.

Snowfall

In Bayou Vista, Louisiana, snow does not fall in February through December.

Daylight

The month with the shortest days is December, with an average of 10h and 18min of daylight.
On the first day of December, 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

The month with the least sunshine is December, with an average of 5.3h of sunshine.

UV index

With an average maximum UV index of 3, December is the month with the lowest UV index in Bayou Vista, Louisiana. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 3 during December translates into these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

What is the average December temperature in Bayou Vista?

An average high-temperature, in December, in Bayou Vista, is 63.5°F (17.5°C) and the average low-temperature is 50.9°F (10.5°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in September is estimated at 100.4°F (38°C).

What is the most humid month in Bayou Vista?

The months with the highest humidity in Bayou Vista are February and December, with an average relative humidity of 79%.

What is the average humidity in December in Bayou Vista?

The average relative humidity in December in Bayou Vista, Louisiana, is 79%.

How much does it rain in Bayou Vista in December?

In Bayou Vista, in December, during 8 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

When it does not snow in Bayou Vista?

In Bayou Vista, snow does not fall in February through December.

Does it snow in Bayou Vista in December?

In Bayou Vista, in December, it doesn't snow. In January, it regularly snows.

What is the month with the shortest days in Bayou Vista?

December has the shortest days of the year in Bayou Vista, with an average of 10h and 18min of daylight.

What is the average length of the day in December in Bayou Vista?

In Bayou Vista, the average day length in December is 10h and 17min.

When is the sunrise / sunset in December in Bayou Vista?

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.

What is the month with the least sunshine in Bayou Vista?

December has the least sunshine of the year, with an average of 5.3h of sunshine.

How many hours of sunshine does Bayou Vista have in December?

In Bayou Vista, the average sunshine duration in December is 5.3h.

What is the month with the lowest UV index in Bayou Vista?

December is the month with the lowest UV index, with an average maximum UV index of 3.

What is the UV index reading in December in Bayou Vista?

The average daily maximum UV index in December in Bayou Vista, Louisiana, is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Bayou Vista, LA

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).

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Average pressure in December
Bayou Vista, LA

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).

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Average wind speed in December
Bayou Vista, LA

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).

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Average humidity in December
Bayou Vista, LA

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%).

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Average rainfall in December
Bayou Vista, LA

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").

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Average rainfall days in December
Bayou Vista, LA

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).

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Average snowfall days in December
Bayou Vista, LA

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).

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Average daylight in December /
Average sunshine in December
Bayou Vista, LA

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).

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Average sunshine days in December
Bayou Vista, LA

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).

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Average UV index in December
Bayou Vista, LA

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).

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Average cloud cover in December
Bayou Vista, LA

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).

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Average visibility in December
Bayou Vista, LA

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).

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Bayou Vista, Louisiana, USA

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