Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The coldest month is January, with an average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 53.1°F (11.7°C).Humidity
The average relative humidity in January is 75%.Rainfall
In Grand Isle, in January, it is raining for 10.3 days, with typically 1.06" (27mm) of accumulated precipitation. Throughout the year, in Grand Isle, Louisiana, there are 151.9 rainfall days, and 22.01" (559mm) of precipitation is accumulated.Snowfall
January is the only month when snow falls. The month with the most snowfall days is January, when snow falls for 0.1 days.Ocean temperature
With an average ocean temperature of 61.3°F (16.3°C), January is the month with the coldest seawater.Note: Most people do not find swimming enjoyable in water of 61.3°F (16.3°C). The task of controlling breathing becomes tougher as the temperature drops from 69.8°F (21°C) to 59°F (15°C).
Daylight
In January, the average length of the day is 10h and 31min.On the first day of the month, sunrise is at 6:53 am and sunset at 5:12 pm. On the last day of January, sunrise is at 6:49 am and sunset at 5:37 pm CST.
Sunshine
The average sunshine in January is 6h.UV index
January and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 4 during January translates into the following directions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
What are January temperatures?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most?
When does it start snowing in Grand Isle?
What is the month with the coldest ocean?
What is the ocean temperature in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Grand Isle have in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Grand Isle, LA
- Average high temperature in January: 61.7°F
The warmest months (with the highest average high temperature) are July and August (86.9°F).
The month with the lowest average high temperature is January (61.7°F).
- Average low temperature in January: 53.1°F
The month with the highest average low temperature is August (81.3°F).
The coldest month (with the lowest average low temperature) is January (53.1°F).
Average pressure in January
Grand Isle, LA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in January
Grand Isle, LA
- Average wind speed in January: 12.4mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in January
Grand Isle, LA
- Average humidity in January: 75%
The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Grand Isle, LA
- Average rainfall in January: 1.06"
The wettest month (with the highest rainfall) is August (4.72").
The driest months (with the least rainfall) are February and April (0.87").
Average rainfall days in January
Grand Isle, LA
- Average rainfall days in January: 10.3 days
The month with the highest number of rainy days is August (20.7 days).
The month with the least rainy days is November (7.5 days).
Average snowfall days in January
Grand Isle, LA
- Average snowfall days in January: 0.1 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 sea temperature in January
Grand Isle, LA
- Average sea temperature in January: 61.4°F
The best month for swimming (with the highest average sea temperature) is August (87.5°F).
The coldest month (with the lowest average sea temperature) is January (61.4°F).
Average daylight in January /
Average sunshine in January
Grand Isle, LA
- Average daylight in January: 10h and 3min
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 January: 6h and 0min
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 24min).
Average sunshine days in January
Grand Isle, LA
- Average sunshine days in January: 18.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is August (6.5 days).
Average UV index in January
Grand Isle, LA
- Average UV index in January: 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 January
Grand Isle, LA
- Average cloud cover in January: 35
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is May (Cloud cover 23).
Average visibility in January
Grand Isle, 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).
Grand Isle, Louisiana, USA
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