Last updated: February 24, 2025
In May, Grand Isle, United States, experiences a delightful coastal climate characterized by a maximum temperature of 29°C (85°F) and an average of 25°C (77°F), offering warm and inviting conditions. The minimum temperature dips to 17°C (63°F), providing a comfortable range for outdoor activities. However, the month is accompanied by 99 mm (3.9 in) of precipitation over approximately 10 days, contributing to a humidity level of 77% that enhances the lush beauty of the landscape. This combination of warmth and occasional rain creates a vibrant setting ideal for beachgoers and nature enthusiasts alike.
In May, Grand Isle, United States, ushers in a delightful transition into the warmer months, with temperatures reflecting a significant rise from the earlier spring. The minimum temperature begins at a comfortable 17°C (63°F), while the average climbs to a pleasant 25°C (77°F), peaking at a maximum of 29°C (85°F). This upward trend in temperature not only highlights the approach of summer but also invites residents and visitors alike to enjoy outdoor activities, bask in the sun, and experience the lively atmosphere of the island. With the days becoming warmer and more inviting, May stands out as a month of rejuvenation and vibrancy, setting the stage for the hot summer that follows.
In May, Grand Isle experiences a moderate rainfall of 99 mm (3.9 in) over the course of approximately 10 days. This month sees a slight decrease in precipitation compared to the wetter April, which recorded 106 mm (4.2 in). However, the pattern of consistent rainfall reflects the transitional spring climate before the onset of the heavier rainfall typical of summer. As we move from May into June, a notable increase in precipitation is observed, jumping to 195 mm (7.7 in), which hints at the forthcoming stormier months. This steady build-up of moisture not only nourishes the local ecosystem but also sets the stage for the more humid and rainfall-rich summer ahead.
In Grand Isle, United States, the humidity levels exhibit a fascinating trend throughout the year. Starting off the year with a high average of 81% in January and February, the humidity slightly dips to 79% by March. April sees a return to 81%, but come May, there's another notable decrease to 77%. This pattern of declining humidity continues into the summer months, reaching its lowest point at 73% in August. Interestingly, as autumn approaches, the humidity begins to rise again, peaking at 81% in November. Overall, while May provides a brief respite from the higher humidity of earlier months, it signals the beginning of a gradual decline that the island experiences as it transitions into the hotter and drier summer season.
In May, Grand Isle experiences an extreme UV Index of 11, identical to the preceding month, April. This level of UV exposure means that visitors should be vigilant against sunburn, with a rapid burn time of just 10 minutes. As temperatures rise and outdoor activities increase, it's essential to take protective measures such as wearing sunscreen, protective clothing, and seeking shade during peak hours. The trend shows a steady escalation in UV intensity from January's moderate levels, peaking in the summer months, emphasizing the importance of UV safety. For more information on UV exposure patterns throughout the year, visit Grand Isle UV Index.
UV Risk Categories
As spring gracefully gives way to summer, May shines brightly in Grand Isle, delivering an impressive 334 hours of sunshine. This notable increase from the previous months underscores a trend of growing daylight, setting the stage for outdoor adventures. After a steady rise from 191 hours in January to 292 hours in April, May marks the pinnacle of sunshine before the summer months slightly ebb with 311 hours in June and 313 hours in July. This beautiful transition not only invites beachgoers to bask in the sun but also highlights Grand Isle as a destination where warm, sunny days are embraced, creating an inviting atmosphere for all.
In May, Grand Isle experiences a 40% chance of sunny weather, which reflects a slight dip compared to the preceding month of April, where the sunshine probability rises to 53%. This trend of fluctuating sunlit days begins to wane as summer approaches, with June and July showing a notable decrease to 29% and 27%, respectively. Interestingly, the likelihood of clear skies remains relatively balanced compared to the early months of the year, where January and October recorded higher percentages of sun. As spring transitions to summer, the patterns suggest that while May offers opportunities for sunshine, locals and visitors might want to embrace the occasional cloud—making it a time where preparedness is key in enjoying the splendid beauty of Grand Isle.
As May arrives in Grand Isle, the daylight duration continues to rise, offering an inviting 13 hours of sunshine— a delightful shift that signals the full bloom of spring. Following the steady increase from January's 10 hours to March's pivotal 12, April maintains this brightness before making way for May's longer days. This trend continues into June and beyond, where the 13 hours of daylight persist through the summer months, creating the perfect backdrop for outdoor activities. As the year progresses, from September to December, daylight once again begins its gradual decline, reminding us of nature's rhythms while we revel in the vibrancy of May's lengthening days.
In Grand Isle, May welcomes a gentle breeze with an average wind speed of 6.1 m/s (14 mph), slightly dipping from the higher speeds observed in the spring months. This trend of moderate winds is characteristic as the season shifts toward summer, creating a pleasant atmosphere for both locals and visitors alike. Following May, a noticeable decline occurs, with June falling to 5.5 m/s (12 mph) and July experiencing a significant drop to just 3.8 m/s (9 mph)—the calmest month of the year. Overall, the wind patterns in Grand Isle reflect a warming climate, transforming the area into a serene coastal escape as it transitions into the hotter summer months.
The weather in Grand Isle changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May'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.
May and January present notably different weather patterns. In May, temperatures range from a minimum of 17°C (63°F) to a maximum of 29°C (85°F), showcasing warmer and more humid conditions with an average temperature of 25°C (77°F) and 77% humidity. The month also experiences about 99 mm (3.9 in) of precipitation spread over 10 days, indicating a wetter atmosphere. In contrast, January features a cooler climate with temperatures dipping as low as 0°C (33°F) at night and peaking at 24°C (76°F), resulting in an average of 15°C (59°F). Despite having similar total precipitation at 100 mm (3.9 in), January sees slightly fewer rainy days with only 8. Humidity is also marginally higher at 81%, contributing to a different overall feel for this winter month. For more details on January weather, you can check Grand Isle weather in January.
When comparing the weather in May and February, there are notable contrasts in temperature and humidity. May boasts warmer temperatures, with average highs reaching 29°C (85°F), compared to February's peak of 24°C (76°F). The minimum temperatures in May are also significantly higher, starting at 17°C (63°F), whereas February sees lows of just 0°C (32°F). Additionally, May experiences slightly more precipitation, with 99 mm (3.9 in) over 10 rainy days, compared to February's 95 mm (3.8 in) rain over 12 days. Humidity levels are fairly high in both months, but February is marginally more humid at 81% compared to May's 77%. For more details on February weather specifics, you can check Grand Isle weather in February.
In comparing the weather between May and March, May typically boasts warmer temperatures, with an average of 25°C (77°F) and a maximum of 29°C (85°F), compared to March's average of 19°C (66°F) and a maximum of 26°C (78°F). March experiences cooler nights with a minimum temperature of 6°C (43°F), while May starts at a much milder 17°C (63°F). Precipitation is more pronounced in May, with 99 mm (3.9 in) expected over about 10 days, whereas March sees less rainfall at 65 mm (2.6 in) across 8 days. Humidity levels are comparable, with March at 79% and May slightly lower at 77%. For a more detailed overview, you can check Grand Isle weather in March.
In comparing the weather between April and May, it is evident that May tends to be warmer with an average temperature of 25°C (77°F), compared to April's average of 21°C (71°F). Additionally, May has higher maximum temperatures, reaching up to 29°C (85°F) compared to April's 26°C (79°F). However, April is slightly wetter, with precipitation totaling 106 mm (4.2 in) over 9 days, while May sees slightly less rainfall at 99 mm (3.9 in) over 10 days. Humidity levels remain relatively consistent, with April at 81% and May at 77%. For more details on April weather conditions, you can check out Grand Isle weather in April.
May and June present a notable shift in weather patterns. May experiences a milder climate with temperatures ranging from a minimum of 17°C (63°F) to an average of 25°C (77°F), peaking at 29°C (85°F). This month also sees precipitation levels at 99 mm (3.9 in) over approximately 10 days, accompanied by a humidity level of 77%. In contrast, June ushers in warmer conditions, with minimum temperatures rising to 24°C (75°F) and average temperatures settling around 27°C (81°F), while reaching a maximum of 31°C (87°F). However, June also brings increased rainfall, totaling 195 mm (7.7 in) across 15 days, though the humidity slightly decreases to 74%. For more detailed information on June weather, check out Grand Isle weather in June.
In May, the weather is generally mild with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 29°C (85°F), averaging around 25°C (77°F). This month experiences a fair amount of rainfall, with 99 mm (3.9 in) of precipitation over about 10 days, and humidity is relatively high at 77%. In contrast, July sees warmer temperatures with a minimum of 25°C (77°F) and a maximum of 32°C (90°F), averaging 28°C (83°F). The summer month is considerably wetter, with 232 mm (9.2 in) of precipitation spread over 19 days, and a slightly lower humidity of 74%. For more detailed insights into July's weather, you can visit Grand Isle weather in July.
In comparing the weather between May and August, May features milder temperatures with an average of 25°C (77°F) and maximum highs reaching 29°C (85°F), while August sees higher temperatures, averaging 28°C (83°F) and peaking at 31°C (88°F). Precipitation is another significant difference: May experiences around 99 mm (3.9 in) over 10 days, whereas August is much wetter with 298 mm (11.7 in) across 23 days. Humidity levels are slightly lower in August at 73%, compared to May's 77%. For more detailed insights, check out Grand Isle weather in August.
May and September present notable differences in weather patterns. In May, temperatures range from a minimum of 17°C (63°F) to a maximum of 29°C (85°F), providing a pleasant average of 25°C (77°F). However, this month sees significant rainfall, with 99 mm (3.9 in) over 10 days and humidity levels around 77%. In contrast, September is slightly warmer, with temperatures ranging from 21°C (70°F) to 32°C (91°F) and an average of 27°C (81°F). It also experiences more precipitation, totaling 166 mm (6.5 in) across 15 days, coupled with a marginally higher humidity of 79%. To learn more about the specific weather conditions in Grand Isle during September, visit Grand Isle weather in September.
In May, the weather features warmer minimum temperatures, averaging 17°C (63°F) and peaking at 29°C (85°F), with a total precipitation of 99 mm (3.9 in) across about 10 rainy days. In contrast, October presents slightly cooler nights with a minimum temperature of 12°C (54°F), but still enjoys a pleasant average of 25°C (77°F) and a maximum of 29°C (84°F). October experiences more rainfall, with 128 mm (5.0 in) over 13 days, yet maintains the same humidity level of 77%. This comparison highlights the transition to cooler, wetter weather as the year progresses, especially noticeable in the shift from May to October. For more details on conditions specific to this month, you can visit Grand Isle weather in October.
May and November present quite contrasting weather conditions. In May, temperatures range from a minimum of 17°C (63°F) to a maximum of 29°C (85°F), with an average of 25°C (77°F). This month also experiences about 99 mm (3.9 in) of precipitation over approximately 10 days, paired with a humidity level of 77%. In contrast, November offers cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 26°C (79°F), averaging 19°C (67°F). The month sees significantly less precipitation, totaling 56 mm (2.2 in) across 6 days, while the humidity rises slightly to 81%. For more details on November weather, you can check Grand Isle weather in November.
In comparing the weather between May and December, we find a notable shift in temperatures and humidity levels. May boasts a warm average temperature of 25°C (77°F), with maximums reaching 29°C (85°F), while December cools down significantly to an average of 17°C (62°F), peaking at 24°C (75°F). Additionally, May experiences a higher minimum temperature of 17°C (63°F) compared to December's cooler 6°C (43°F). Both months see similar precipitation levels, with May receiving 99 mm (3.9 in) and December slightly higher at 109 mm (4.3 in), albeit with comparable rainy days. Humidity also plays a role, with December being slightly more humid at 84% versus May's 77%. For those interested in further details about December weather, you can check Grand Isle weather in December.
As May unfurls its warm embrace over Grand Isle, visitors can expect a delightful shift in weather compared to the earlier months of the year. With average temperatures touching a comfortable 25°C (77°F), the days grow longer and sunnier, making it a perfect time for outdoor adventures. However, a bit of tropical humidity, sitting around 77%, and occasional rain (approximately 10 days) remind us that spring is still sharing the stage with the upcoming summer. This balance of warmth and refreshing showers creates a vibrant atmosphere, encouraging both relaxation and exploration. For more insights into how the seasons evolve, check out Grand Isle Climate.