March weather forecastGrand Isle, LA
March
Weather in March
The turn of the season in March signals a significant shift in the Grand Isle weather pattern, with the temperature range extending up to 68.9°F (20.5°C). March brings with it an increase in daylight and sunshine hours consistent with the arrival of spring. Cloud coverage decreases marginally, nurturing the city's fresh spring vibe. The abundance of sunlight bodes well for outdoor activities despite the relative humidity remaining high, similar to the previous months. Experiencing the Grand Isle weather in March would add a refreshing edge to a visit to the city.Temperature
With March's arrival, Grand Isle's weather records an average high-temperature of a pleasant 68.9°F (20.5°C), marking little difference from February's 64.6°F (18.1°C). The nights of March cool down to an average low of 61.3°F (16.3°C), subtly lower than daytime highs.Humidity
The average relative humidity in March is 77%.Rainfall
In Grand Isle, during March, the rain falls for 10.4 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Grand Isle, during the entire year, the rain falls for 151.9 days and collects up to 22.01" (559mm) of precipitation.Snowfall
February through December are months without snowfall.Ocean temperature
In Grand Isle, the average seawater temperature in March is 66°F (18.9°C).Note: Swimming becomes less enjoyable for most at a surface water temperature of 66°F (18.9°C). As the temperature decreases below 69.8°F (21°C), breathing becomes increasingly difficult.
Daylight
In Grand Isle, the average length of the day in March is 12h and 1min.On the first day of the month, sunrise is at 6:24 am and sunset at 5:59 pm CST. On the last day of March, sunrise is at 6:49 am and sunset at 7:18 pm CDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.
Sunshine
In Grand Isle, the average sunshine in March is 8.4h.UV index
In March, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 5 in March converts into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Grand Isle, LA
- Average high temperature in March: 68.9°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 March: 61.3°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 March
Grand Isle, LA
- Average pressure in March: 30.08"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 March
Grand Isle, LA
- Average wind speed in March: 11.6mph
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 March
Grand Isle, LA
- Average humidity in March: 77%
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 March
Grand Isle, LA
- Average rainfall in March: 0.98"
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 March
Grand Isle, LA
- Average rainfall days in March: 10.4 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 March
Grand Isle, LA
- Average snowfall days in March: 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 sea temperature in March
Grand Isle, LA
- Average sea temperature in March: 66.1°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 March /
Average sunshine in March
Grand Isle, LA
- Average daylight in March: 12h and 0min
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 March: 8h and 24min
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 March
Grand Isle, LA
- Average sunshine days in March: 18.5 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 March
Grand Isle, LA
- Average UV index in March: 5
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 March
Grand Isle, LA
- Average cloud cover in March: 33
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 March
Grand Isle, LA
- Average visibility in March: 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).
