Last updated: February 24, 2025
December in Grand Isle, United States offers a transitional climate influenced by the winter season. With maximum temperatures averaging around 24°C (75°F) and a milder average of 17°C (62°F), the days can be pleasantly warm. However, nighttime temperatures can dip to a cool minimum of 6°C (43°F). The month sees a notable precipitation total of 109 mm (4.3 in) across approximately 10 rainy days, contributing to the high humidity level of 84%. This combination of warmth and moisture fosters a humid but unique atmosphere that defines December on the island.
As December descends upon Grand Isle, the temperatures start to shift, signaling the arrival of a cooler winter. With minimums averaging around 6°C (43°F) and daytime highs reaching 24°C (75°F), there's a comfortable chill in the air that contrasts notably with the sweltering heat of summer months. The average temperature settles at a mild 17°C (62°F), making it an inviting time for visitors seeking to escape harsher climates. While the days grow shorter and the nights get cooler, the weather remains relatively pleasant compared to the extremes seen earlier in the year, providing a cozy backdrop for holiday festivities and outdoor adventures.
In Grand Isle, Louisiana, December marks a transition, bringing with it a precipitation amount of 109 mm (4.3 in) over 10 days. As the year winds down, the rainfall is notably higher than November's meager 56 mm (2.2 in), indicating a shift towards a wetter climate in the colder months. This December precipitation reflects a broader trend seen throughout the year, where the months of late spring and summer experience the heaviest rainfall, peaking in August with 298 mm (11.7 in). Despite the onset of winter, December maintains a favorable balance, avoiding the drastic drops in rainfall observed in early spring. Overall, these patterns suggest that while Grand Isle faces drier spells, the end of the year remains vibrant with moisture, setting the stage for the cycles of nature that follow in the new year.
In December, Grand Isle, United States, experiences an uptick in humidity, reaching 84%—the highest level of the year. This increase contrasts with the warmer months of June to August, when humidity levels drop to their lowest, hovering around 73-74%. As winter approaches, a gradual rise in humidity becomes evident from October's 77% and November's 81%, culminating in December's notable peak. This trend suggests a return to the more humid conditions characteristic of the early part of the year, where humidity stabilizes around 81%. The transition underscores the region's unique climate rhythm, accentuating the chilly yet damp atmosphere prevalent during the winter season.
In Grand Isle, United States, December marks a notable shift in the UV Index, dropping to a moderate level of 5. This reduction in UV intensity allows for a safer outdoor experience, with a burn time of approximately 30 minutes before unprotected skin could start to redden. This is a stark contrast to the extreme levels observed in the peak summer months of July and August, where the UV Index soared to 12 and burn times plummeted to just 10 minutes. As the year progresses from bright and burning summers to the cooler winter months, it's clear that the sun is more forgiving in December, making it an ideal time for outdoor activities without the heightened risk of sunburn. For comprehensive information on the UV index throughout the year, visit Grand Isle UV Index.
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December in Grand Isle sees 230 hours of sunshine, concluding a year characterized by a gradual increase in daylight. The year kicks off with January's modest 191 hours, but as the seasons shift, sunlight gradually blooms, peaking in May with an impressive 334 hours. This upward trend continues into the summer months, boasting consistent sunshine hours that hover around the 310-hour mark through July and August. As fall approaches, there’s a gentle tapering off, with November dropping to 263 hours before December settles in. While December reflects a slight decline compared to its preceding months, it still offers ample sunshine, inviting both residents and visitors to enjoy the mild winter days of this charming coastal town.
In Grand Isle, December offers a relatively sunny embrace with a 47% chance of clear skies, marking an intriguing shift in weather patterns as the year draws to a close. While the late fall months tend to increase in sunshine, peaking at 64% in November, December's probability dips slightly yet remains favorable compared to the preceding months, such as July and June, where sunny days are scarce with chances dropping to 27% and 29%, respectively. This trend suggests that as winter approaches, residents and visitors can still look forward to a mix of sun and clouds, making December a surprisingly inviting time to enjoy the outdoors in this charming coastal locale.
In Grand Isle, United States, daylight duration sees a rhythmic ebb and flow throughout the year. As winter settles in, December offers a brief respite with 10 hours of daylight, mirroring the shorter days of January and November. Interestingly, this signals a period of stability following the gradual lengthening that occurs from February to June, where daylight peaks at 13 hours during the summer months. As the year transitions back into autumn, daylight begins to wane again, reducing to 12 hours in September and slipping down to 11 hours by October, before returning to the shorter days of late fall and winter. This cyclical pattern not only reflects the seasonal changes but also sets the stage for longer days ahead as the new year approaches.
As December arrives in Grand Isle, the wind begins to whisper the gentle transitions of the season. With an average speed of 5.2 m/s (12 mph), the coastal breezes are characteristic of the late year, revealing a notable trend of decreasing wind intensity since the spring months. From a peak of 6.5 m/s (15 mph) in March, winds gradually mellowed throughout the year, reaching their annual low in July with 3.8 m/s (9 mph). This softening continues into the closing month, with December's winds echoing the tranquility of winter. Overall, the wind patterns illustrate a gradual retreat from the brisk enthusiasm of spring, inviting residents and visitors alike to embrace the serene charm of the island's winter days.
The weather in Grand Isle changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Grand Isle and find detailed weather information for every month.
In December, the weather is characterized by a milder temperature range with minimums around 6°C (43°F) and maximums reaching up to 24°C (75°F). The month brings about 109 mm (4.3 in) of precipitation over approximately 10 days, accompanied by high humidity levels averaging 84%. In contrast, January experiences cooler temperatures, with minimums dropping to 0°C (33°F) while still holding a maximum of 24°C (76°F). The precipitation decreases slightly to 100 mm (3.9 in) over 8 days, and humidity levels also lower to an average of 81%. For more detailed insights into January's climate, you can check Grand Isle weather in January.
December and February in Grand Isle present a mild winter climate, though there are some notable differences. In December, temperatures range from a minimum of 6°C (43°F) to a maximum of 24°C (75°F), with an average temperature of 17°C (62°F). The month experiences 109 mm (4.3 in) of precipitation over approximately 10 days, with humidity levels at 84%. In contrast, February sees cooler nights with a minimum temperature dropping to 0°C (32°F), while the average remains the same at 17°C (62°F), and the maximum temperature slightly increases to 24°C (76°F). Precipitation in February is slightly lower at 95 mm (3.8 in), but it occurs over a longer span of 12 days, with humidity at a more comfortable rate of 81%. For those interested in more detailed February weather information, you can check Grand Isle weather in February.
In December, temperatures in Grand Isle range from a minimum of 6°C (43°F) to a maximum of 24°C (75°F), with an average of 17°C (62°F). The month sees significant precipitation, totaling 109 mm (4.3 in) over approximately 10 days, along with a high humidity level of 84%. In contrast, March enjoys slightly warmer conditions with temperatures ranging from 6°C (43°F) to 26°C (78°F), averaging 19°C (66°F). Additionally, precipitation decreases to 65 mm (2.6 in) over 8 days, resulting in lower humidity at 79%. This suggests that while both months have comparable minimum temperatures, March offers more pleasant overall weather with reduced precipitation and humidity. For more detailed insights, check out Grand Isle weather in March.
In December, the weather is characterized by a range from a minimum of 6°C (43°F) to a maximum of 24°C (75°F), with an average temperature of 17°C (62°F). The month experiences around 109 mm (4.3 in) of precipitation over approximately 10 days, accompanied by a relatively high humidity level of 84%. In contrast, April sees milder temperatures with a minimum of 12°C (54°F), an average of 21°C (71°F), and a maximum of 26°C (79°F). Precipitation remains similar at 106 mm (4.2 in) but occurs over just 9 days, and humidity is slightly lower at 81%. For a more detailed look at April weather, check out Grand Isle weather in April.
December and May present quite different weather patterns, with December being cooler and more humid. In December, temperatures range from a minimum of 6°C (43°F) to a maximum of 24°C (75°F), averaging around 17°C (62°F). The month tends to be wetter, with 109 mm (4.3 in) of precipitation over about 10 days, accompanied by a relatively high humidity level of 84%. In contrast, May features warmer temperatures, with a minimum of 17°C (63°F) and maximum temperatures reaching 29°C (85°F), averaging 25°C (77°F). Precipitation in May is slightly lower at 99 mm (3.9 in) over the same number of rainy days, and humidity drops to 77%. For a detailed look at May’s weather, you can visit Grand Isle weather in May.
In December, the weather features milder temperatures, with a minimum of 6°C (43°F) and an average of 17°C (62°F), peaking at a maximum of 24°C (75°F). Precipitation is relatively moderate at 109 mm (4.3 in), occurring over 10 days with a high humidity level of 84%. In contrast, June brings much warmer conditions, with temperatures ranging from a minimum of 24°C (75°F) to an average of 27°C (81°F), and reaching up to 31°C (87°F) at the highest. Rainfall increases significantly to 195 mm (7.7 in) spread across 15 days, while humidity drops to 74%. For more details on June's climate, you can visit Grand Isle weather in June.
The weather in December and July presents a striking contrast in terms of temperature and precipitation. December experiences milder temperatures, with a minimum of 6°C (43°F) and a maximum of 24°C (75°F), offering an average of 17°C (62°F). In contrast, July boasts significantly warmer conditions, featuring a minimum temperature of 25°C (77°F) and soaring to a maximum of 32°C (90°F), averaging 28°C (83°F). While December has a notable humidity level of 84% and receives 109 mm (4.3 in) of precipitation over 10 days, July sees even higher precipitation at 232 mm (9.2 in) over 19 days, with a lower humidity of 74%. For a detailed look at July weather, you can visit Grand Isle weather in July.
December and August present strikingly different weather patterns. In December, temperatures range from a cooler minimum of 6°C (43°F) to a comfortable average of 17°C (62°F), peaking at a maximum of 24°C (75°F). This month experiences significant precipitation, with 109 mm (4.3 in) falling over approximately 10 days, accompanied by high humidity levels at 84%. Conversely, August brings much warmer temperatures, with a minimum of 25°C (77°F), an average of 28°C (83°F), and a maximum reaching 31°C (88°F). However, it is also a wetter month, with 298 mm (11.7 in) of rain spread across 23 days and a lower humidity of 73%. For more details about the August climate, check Grand Isle weather in August.
In December, the weather presents a cooler atmosphere compared to September, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 24°C (75°F) and an average of 17°C (62°F). In contrast, September boasts much warmer temperatures, averaging 27°C (81°F), with highs reaching up to 32°C (91°F). Precipitation also differs between the two months; December experiences 109 mm (4.3 in) over about 10 days, while September sees higher rainfall at 166 mm (6.5 in) across approximately 15 days. Additionally, December has a higher humidity level at 84%, compared to September's 79%. For more details, you can check Grand Isle weather in September.
When comparing the weather in October to that of December, October experiences warmer temperatures with a minimum of 12°C (54°F) and an average of 25°C (77°F), peaking at 29°C (84°F). In contrast, December sees cooler conditions with a minimum of 6°C (43°F) and an average of 17°C (62°F), climbing to a maximum of 24°C (75°F). Precipitation is slightly higher in October at 128 mm (5.0 in) over 13 days, compared to December's 109 mm (4.3 in) over 10 days, though December has higher humidity at 84%, compared to October's 77%. For more details on the weather during this time, you can visit Grand Isle weather in October.
December weather sees a slight dip in minimum temperatures compared to November, with lows of 6°C (43°F) versus November's 7°C (45°F). The average temperature for December is also a bit cooler at 17°C (62°F), while November enjoys a warmer average of 19°C (67°F). Additionally, December experiences more rainfall, totaling 109 mm (4.3 in) over 10 days, compared to November's 56 mm (2.2 in) over just 6 days. Humidity slightly increases in December to 84%, compared to November's 81%. For more details on November conditions, check out Grand Isle weather in November.
As December unfolds in Grand Isle, visitors will find a distinct shift in the weather compared to other months. With temperatures ranging from a refreshing coolness to mild warmth, the air carries a crispness that sets a different tone from the sweltering summer heat. Precipitation becomes more prevalent, with occasional rainfall adding to the season's ambience, while the high humidity creates a cozy atmosphere unique to this time of year. For those seeking to explore the charm of Grand Isle during the brisk winter month, understanding the nuances of the December climate can enhance the experience. Discover more about what to expect in this coastal haven at Grand Isle Climate.