Last updated: February 24, 2025
In August, Grand Isle, United States, experiences a warm and humid climate, with average temperatures around 28°C (83°F) and maximum peaks reaching 31°C (88°F). The nights remain comfortably mild, with a minimum temperature of 25°C (77°F). However, this warmth is accompanied by significant rainfall, totaling 298 mm (11.7 in) over the month, falling on approximately 23 days. With humidity levels averaging 73%, visitors should prepare for a sultry, tropical atmosphere. Enjoy the vibrant summer days while being mindful of the frequent showers that characterize this coastal paradise.
In August, Grand Isle experiences warm and inviting temperatures, with minimums around 25°C (77°F) and averages peaking at 28°C (83°F). The warmth continues throughout the month, reaching maximums of 31°C (88°F), making it one of the hottest periods of the year. Following the intense heat of July, where temperatures climbed even higher, August maintains a comfortable warmth that is perfect for beach activities and outdoor exploration. As summer nears its end, the gradual cooling trend begins with September, but August remains a vibrant time filled with sunny days and balmy evenings, inviting visitors and locals alike to savor the season before the cooler months arrive.
In August, Grand Isle experiences its peak precipitation, recording an impressive 298 mm (11.7 in) of rainfall over 23 days. This surge contributes to the island's reputation for a humid summer, following a series of wet months throughout the year. The trend is clear: July sets the stage with 232 mm (9.2 in) across 19 days, but August outpaces it, emphasizing a late-summer deluge. This pattern can be traced back through the summer months, where precipitation steadily rises from 195 mm (7.7 in) in June. As this month culminates the season, the impact of sustained rainfall is felt not only in the lush landscapes of Grand Isle but also in the vibrant ecosystem that thrives on this natural abundance.
In August, Grand Isle experiences a slight dip in humidity, reaching 73%, the lowest point of the year. This trend of decreasing humidity begins in June and continues into August, contributing to a relatively more comfortable climate during the peak of summer. Notably, humidity levels begin to rise again in September, indicating a return to the more typical patterns observed earlier in the year, where levels fluctuate between 79% and 84%. Overall, August marks a transitional phase in Grand Isle's weather, showcasing a brief respite before the humid conditions return as fall approaches.
In August, Grand Isle, United States, experiences its peak UV Index at 12, categorized as extreme, with a burn time of just 10 minutes. This trend of heightened UV levels, consistent since July, highlights the critical importance of sun protection during the summer months. The UV Index has sharply risen from a moderate 5 in January to its summer highs, emphasizing the need for vigilance as temperatures soar. As summer wanes into September, the UV Index remains high at 11, but a gradual decline begins, leading into the more moderate levels of fall. For more detailed information on UV levels throughout the year, check out Grand Isle UV Index.
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August in Grand Isle, United States, shines bright with an impressive 312 hours of sunshine, continuing the trend of summer brilliance that peaks in May with 334 hours. Following closely, June and July hover around the 300-hour mark, creating a sun-soaked trio of months that invite outdoor adventures and coastal relaxation. As summer wanes in September, sunshine diminishes to 281 hours, signaling the start of a gradual decline into the cooler months. Overall, the sunshine data reflects a vibrant summer season, with August serving as a perfect bridge between the exuberance of summer and the gentler light of autumn.
In August, the likelihood of sunny weather in Grand Isle takes a dip to 31%, placing it among the more overcast months of the year. This decline follows the trend observed in July and June, where sunshine chances plummet to 27% and 29%, respectively. This suggests a tendency for summer to yield less sunny days as it progresses. Interestingly, the sun's return becomes more promising in September at 43% and remains hopeful through the fall months. Thus, while August might not offer the sunniest skies, it transitions into a season filled with more brightness ahead.
In August, Grand Isle basks in an invigorating 13 hours of daylight, maintaining the generous light levels established during the summer months. This trend signifies a peak in natural brightness that began in May and continues through July, creating an ideal atmosphere for outdoor activities and relaxation. As the month progresses, the daylight hours begin a subtle descent, hinting at the approaching autumn. This gradual decline is mirrored in the months that follow, with daylight steadily tapering off to 12 hours in September and continuing down to 10 hours by November, capturing the cyclic rhythm of the seasons. Enjoy these long August days while they last, as they gracefully transition into the golden hues of fall!
In August, Grand Isle experiences a noticeable dip in wind speed, averaging 4.8 m/s (11 mph), a decline from the breezier months earlier in the year. This retreat is part of a broader trend, as the summer winds that characterized July's relatively mild 3.8 m/s (9 mph) give way to slightly more consistent breezes in the latter part of the year. Despite this summer lull, the winds begin to pick up in September, where they return to 4.9 m/s (11 mph), hinting at the transitional nature of the seasons. Overall, the winds reflect a typical cycle for Grand Isle, where the summer's heat leads to gentler breezes before the arrival of autumn's more robust air currents.
The weather in Grand Isle changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August'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.
August and January present starkly contrasting weather conditions. In August, temperatures soar with a minimum of 25°C (77°F) and an average of 28°C (83°F), peaking at 31°C (88°F). The month is characterized by high humidity at 73% and frequent rainfall, totaling 298 mm (11.7 in) over 23 days. In contrast, January experiences much cooler temperatures, with a minimum of 0°C (33°F) and an average of 15°C (59°F), reaching a maximum of 24°C (76°F). This month sees significantly less rain, with only 100 mm (3.9 in) falling on just 8 days, despite a higher humidity level of 81%. For those interested in a deeper dive into January's climate specifics, you can refer to Grand Isle weather in January.
When comparing the weather in August and February, it's evident that these two months present quite different climates. August enjoys consistently warm temperatures, with averages around 28°C (83°F) and peak highs reaching 31°C (88°F). However, it also faces considerable rainfall, with 298 mm (11.7 in) spread over 23 days, leading to a relatively humid environment at 73%. In contrast, February offers a much cooler experience, featuring average temperatures of 17°C (62°F) and a maximum of 24°C (76°F), with a minimum temperature dropping to 0°C (32°F). Rainfall is significantly lower at 95 mm (3.8 in) over 12 days, though humidity remains high at 81%. For more details about February weather, you can visit Grand Isle weather in February.
When comparing the weather in August and March, the contrasts are striking. August typically features much warmer temperatures, with a minimum of 25°C (77°F) and an average around 28°C (83°F), peaking at 31°C (88°F). In stark contrast, March is noticeably cooler, starting at a minimum of 6°C (43°F) and averaging 19°C (66°F), with a maximum of 26°C (78°F).
Precipitation levels further highlight the difference; August experiences significant rainfall, totaling 298 mm (11.7 in) over 23 days, while March brings only about 65 mm (2.6 in) across 8 days. Interestingly, humidity is slightly higher in March at 79%, compared to 73% in August. For more details on March weather, you can refer to Grand Isle weather in March.
When comparing the weather in August and April, it’s evident that August is significantly warmer and wetter. In August, temperatures range from a minimum of 25°C (77°F) to a maximum of 31°C (88°F), with an average of 28°C (83°F). In contrast, April sees much cooler temperatures, with a minimum of 12°C (54°F) and a maximum of 26°C (79°F), averaging 21°C (71°F). Additionally, August experiences heavy rainfall, accumulating 298 mm (11.7 in) over 23 days, while April has a much lower precipitation level of 106 mm (4.2 in) across 9 days. Humidity levels are also noteworthy; April is slightly more humid at 81%, compared to August’s 73%. For more details, you can check Grand Isle weather in April.
When comparing the weather in August and May, notable differences emerge. August typically experiences warmer temperatures, with minimums averaging around 25°C (77°F) and maximums reaching up to 31°C (88°F). In contrast, May offers milder conditions, featuring minimum temperatures of 17°C (63°F) and maximums of 29°C (85°F). Additionally, August sees significantly higher precipitation, averaging 298 mm (11.7 inches) over 23 days, whereas May enjoys a more moderate rainfall of 99 mm (3.9 inches) over just 10 days. Humidity levels are relatively similar, with August at 73% and May slightly higher at 77%. For those interested in a detailed look at weather conditions in May, check out Grand Isle weather in May.
When comparing the weather in June and August, both months experience warm temperatures, with August featuring slightly higher averages. In June, the minimum temperature is 24°C (75°F), averaging 27°C (81°F) and peaking at 31°C (87°F). In contrast, August sees a minimum temperature of 25°C (77°F), an average of 28°C (83°F), and a similar maximum of 31°C (88°F). Precipitation is notably higher in August, with 298 mm (11.7 in) over 23 days, compared to June's 195 mm (7.7 in) over just 15 days. Humidity remains relatively consistent, at 74% in June and rising slightly to 73% in August. For a more detailed look at June's climate, you can check out Grand Isle weather in June.
When comparing the weather between July and August, both months experience a similar range of temperatures, with July peaking slightly higher at a maximum of 32°C (90°F) compared to August's 31°C (88°F). However, August sees a significant increase in precipitation, yielding 298 mm (11.7 in) over 23 rainy days, while July has 232 mm (9.2 in) spread across 19 days. Humidity remains fairly consistent, with August at 73% and July at 74%. For a more detailed look at July's weather, you can visit Grand Isle weather in July.
August and September showcase notable differences in weather patterns. August tends to be hotter with an average temperature of 28°C (83°F) and a maximum of 31°C (88°F), while September offers slightly cooler conditions with an average of 27°C (81°F) and a maximum of 32°C (91°F). Precipitation is significantly higher in August, with 298 mm (11.7 in) falling over 23 days, compared to September's 166 mm (6.5 in) over just 15 days. Additionally, September experiences a higher humidity level at 79%, compared to August's 73%. For more specific insights, check out Grand Isle weather in September.
August and October present a stark contrast in weather conditions. In August, temperatures range from a minimum of 25°C (77°F) to a maximum of 31°C (88°F), with an average temperature of 28°C (83°F). The month is characterized by high humidity at 73% and substantial rainfall, totaling 298 mm (11.7 in) over 23 days. In contrast, October features a cooler climate with minimum temperatures dropping to 12°C (54°F), an average temperature of 25°C (77°F), and a maximum of 29°C (84°F). Precipitation decreases significantly to 128 mm (5.0 in) across just 13 days, while humidity slightly rises to 77%. For more detailed insights regarding October's weather, you can check Grand Isle weather in October.
August typically brings much hotter weather compared to November, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 31°C (88°F) and an average of 28°C (83°F). In contrast, November features cooler temperatures, with a minimum of 7°C (45°F), an average of 19°C (67°F), and a maximum of 26°C (79°F). Additionally, August is characterized by higher precipitation, receiving 298 mm (11.7 in) over 23 days, while November sees only 56 mm (2.2 in) across just 6 days. Interestingly, while the humidity in November is slightly higher at 81%, it feels far more comfortable than the high humidity of 73% experienced in August. For a detailed look at the weather specifics, you can check Grand Isle weather in November.
In August, the weather is characterized by warm temperatures, with a minimum of 25°C (77°F) and an average of 28°C (83°F), peaking at a high of 31°C (88°F). The month sees significant rainfall, totaling 298 mm (11.7 in) over 23 days, contributing to a humidity level of 73%. In contrast, December offers a much cooler climate; temperatures drop to a minimum of 6°C (43°F) and an average of 17°C (62°F), reaching a maximum of 24°C (75°F). Rainfall is also reduced in December, with total precipitation of 109 mm (4.3 in) across only 10 days, though humidity is slightly higher at 84%. For more details on December weather, check out Grand Isle weather in December.
In August, Grand Isle transforms into a hot and humid getaway, markedly distinct from the cooler months. With high temperatures averaging around 28°C (83°F) and a notable humidity of 73%, the summer heat is palpable. Rainfall also plays a significant role in August, with 23 days of precipitation accumulating to nearly 298 mm (11.7 in), often leading to brief, refreshing showers that break the humidity. This blend of heat and rain can create a tropical atmosphere, making it a unique experience compared to the drier, milder conditions earlier in the year. For a deeper look into what the weather has in store, visit Grand Isle Climate.