January weather forecast
Mandeville, LA

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Weather in January

Temperature fluctuations in January transition between a low of 44.8°F (7.1°C) and a high of 59.2°F (15.1°C) in Mandeville, Louisiana. Despite the chilly conditions, primarily it remains a month with moderate temperatures, marking the start of the year. The weather conditions remain somewhat stable, with January not experiencing any snowfall. The month often sees 11.2 days of rainfall leading to a fair amount of grey skies. Yet, sunlight prevails for approximately 10.4 hours a day as a counterbalance.

Temperature

In Mandeville, Louisiana, the month of January is known for its lowest average temperatures, reaching a high of 59.2°F (15.1°C) and a low of 44.8°F (7.1°C).

Humidity

The average relative humidity in January is 75%.

Rainfall

In January, the rain falls for 11.2 days. Throughout January, 2.68" (68mm) of precipitation is accumulated. In Mandeville, Louisiana, during the entire year, the rain falls for 183.7 days and collects up to 43.94" (1116mm) of precipitation.

Snowfall

January is the only month when snow falls. The month with the most snowfall is January, when snow falls for 0.2 days and typically aggregates up to 0.08" (2mm) of snow.

Ocean temperature

January is the month with the coldest seawater, with an average ocean temperature of 56.7°F (13.7°C).
Note: Navigating the 56.7°F (13.7°C) at 55.4°F (13°C) is no joy, and temperatures less than 50°F (10°C) can threaten breathing and cause a chilling shock, gauging personal stamina.

Daylight

In Mandeville, the average length of the day in January is 10h and 27min.
On the first day of January, sunrise is at 6:56 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 5:35 pm CST.

Sunshine

In Mandeville, the average sunshine in January is 5.6h.

UV index

In January, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: During January, 4 as the daily maximum UV index converts into the following advice:
Undertake protective steps - Preventing sun damage is advised. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.

Frequently asked questions

What month is the coldest?

The lowest temperatures are recorded in January, with averages reaching a high of 59.2°F (15.1°C) and a low of 44.8°F (7.1°C).

What are January temperatures?

In January, in Mandeville, the average high-temperature is 59.2°F (15.1°C), and the average low-temperature is 44.8°F (7.1°C).

What is the average humidity in January?

In Mandeville, the average relative humidity in January is 75%.

How many days does it rain in January?

In Mandeville, Louisiana, in January, during 11.2 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When does it snow the most in Mandeville?

The month with the most snowfall is January, when snow falls for 0.2 days and typically aggregates up to 0.08" (2mm) of snow.

When does it start snowing in Mandeville?

January is the first month it typically snows in Mandeville. Throughout January, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow.

What is the month with the coldest ocean?

The month with the coldest seawater is January, with an average ocean temperature of 56.7°F (13.7°C).

How cold is the water in January?

In Mandeville, the average seawater temperature in January is 56.7°F (13.7°C). Swimming in 56.7°F (13.7°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Mandeville have in January?

In Mandeville, the average day length in January is 10h and 27min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 6:56 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 5:35 pm CST.

How long on average sun shines in January?

In January, the average sunshine duration is 5.6h.

How high is the UV index in January?

In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Mandeville, LA

Average temperature in January - Mandeville, LA
  • Average high temperature in January: 59.2°F

The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (59.2°F).

  • Average low temperature in January: 44.8°F

The months with the highest average low temperature are July and August (76.8°F).
The coldest month (with the lowest average low temperature) is January (44.8°F).

Average pressure in January
Mandeville, LA

Average pressure in January - Mandeville, LA
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

Average wind speed in January
Mandeville, LA

Average wind speed in January - Mandeville, LA
  • Average wind speed in January: 7.5mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in January
Mandeville, LA

Average humidity in January - Mandeville, LA
  • Average humidity in January: 75%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in January
Mandeville, LA

Average rainfall in January - Mandeville, LA
  • Average rainfall in January: 2.68"

The wettest month (with the highest rainfall) is August (6.73").
The driest month (with the least rainfall) is November (1.93").

Average rainfall days in January
Mandeville, LA

Average rainfall days in January - Mandeville, LA
  • Average rainfall days in January: 11.2 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (8.2 days).

Average snowfall in January
Mandeville, LA

Average snowfall in January - Mandeville, LA
  • Average snowfall in January: 0.08"

The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in January
Mandeville, LA

Average snowfall days in January - Mandeville, LA
  • Average snowfall days in January: 0.2 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

Average sea temperature in January
Mandeville, LA

Average sea temperature in January - Mandeville, LA
  • Average sea temperature in January: 56.6°F

The best month for swimming (with the highest average sea temperature) is August (86.4°F).
The coldest month (with the lowest average sea temperature) is January (56.6°F).

Average daylight in January /
Average sunshine in January
Mandeville, LA

Average daylight in January / Average sunshine in January - Mandeville, LA
  • Average daylight in January: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in January: 5h and 4min

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 6min).

Average sunshine days in January
Mandeville, LA

Average sunshine days in January - Mandeville, LA
  • Average sunshine days in January: 17.8 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is August (5.6 days).

Average UV index in January
Mandeville, LA

Average UV index in January - Mandeville, LA
  • Average UV index in January: 4

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 January
Mandeville, LA

Average cloud cover in January - Mandeville, LA
  • Average cloud cover in January: 38

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 24).

Average visibility in January
Mandeville, LA

Average visibility in January - Mandeville, LA
  • Average visibility in January: 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).

Mandeville, Louisiana, USA

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