Last updated: February 24, 2025
May in Sullivans Island, United States, brings a delightful blend of warmth and occasional showers. With maximum temperatures soaring to 31°C (89°F) and an average of 23°C (74°F), it’s a beautiful time for outdoor activities. However, the weather can be unpredictable, delivering an average of 82 mm (3.2 in) of rain over 8 days, making it crucial to be prepared for sudden downpours. Humidity lingers around 78%, adding a touch of balmy warmth to the atmosphere. Embrace the vibrant early summer days while enjoying the scenic beauty of this enchanting island!
As May arrives on Sullivan's Island, temperatures begin to soar, marking a clear shift towards the warmth of summer. The month starts off with a pleasant minimum temperature of 12°C (55°F) and enjoys an average of 23°C (74°F), peaking at a delightful 31°C (89°F). This notable increase from the previous months not only invites beachgoers and outdoor enthusiasts but also signals the approach of more consistent warm weather as the island transitions into June. With the temperatures steadily rising, May serves as a gateway to the lively summer atmosphere that characterizes this coastal gem.
In May, Sullivans Island experiences a moderate precipitation level of 82 mm (3.2 in), falling on 8 days, which aligns closely with the rainfall patterns seen in the preceding months. This slight dip follows the more significant downpour in April at 105 mm (4.1 in), suggesting that while spring showers are still prominent, the start of summer brings a gradual reduction in rainfall. As temperatures rise and summer approaches, the island typically sees an uptick in precipitation, with the subsequent months of June and July recording considerably higher amounts. Overall, May serves as a transition month, where the island begins to shift towards its wetter summer season while still enjoying the refreshing spring rains.
In Sullivans Island during the month of May, the humidity hovers around a comfortable 78%, maintaining a consistent level that aligns with the trends of the preceding spring months. Notably, May's humidity mirrors that of April and is consistent with the conditions experienced over June, indicating a steady atmosphere as the island transitions into the warmer summer months. As the year progresses toward July and August, humidity levels are expected to rise, reflecting the island's characteristic coastal climate. Overall, May’s relatively stable humidity contributes to an inviting environment, perfect for enjoying the serene seaside views before the increased heat arrives.
In May, Sullivans Island experiences a significant peak in UV radiation, with an extreme UV Index of 11, indicating that sun protection is crucial for outdoor activities. This month marks a continuation of the trend seen since March, where the UV levels have steadily increased from a moderate 4 in January to a startling 11 in May. The burn time during this period decreases to just 10 minutes, underlining the importance of vigilance against overexposure. As summer approaches, residents and visitors should remain mindful of these escalating UV levels to enjoy the beautiful coastal environment safely. For more detailed UV forecasts, visit Sullivans Island UV Index.
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As May arrives on Sullivan's Island, it ushers in a delightful peak of sunshine with 342 hours basking in lively warmth. This marks a beautiful transition from the gradual increase in daylight that began in January with only 190 hours. Each month, the sunlight builds, showcasing a steady upward trend through the spring, with April already hinting at the radiance of late spring and early summer. Following May, the sunshine begins to slightly taper off in June as summer unfolds. Collectively, these monthly hours not only illuminate the days but also set the scene for vibrant outdoor activities and cherished moments by the beach, making Sullivan's Island a radiant retreat during this splendid month.
May in Sullivans Island offers a promising 53% chance of sunny weather, making it a delightful month for outdoor activities and beach outings. Following the more variable conditions of early spring, where sunshine probabilities hovered around 38% to 57%, May marks a slight dip from April’s peak sunny days. As summer approaches, June takes a notable plunge to just 30%, indicating that May might be one of the last chances to enjoy pleasant, sun-kissed days before the season's humidity settles in. Overall, May stands out as a transitional month, balancing moderate sunshine with the anticipation of summer's arrival.
As spring blossoms in Sullivans Island, the daylight hours begin to stretch, reaching 13 hours by May, mirroring the peak of the previous month. This continuation of bright days not only enhances the charm of the island but also sets the stage for the upcoming summer months. In contrast, during the winter, daylight is at its lowest, with just 10 hours in January and November, creating a stark yet beautiful seasonal shift. As the year progresses, June and July offer the longest days at 14 hours, making them perfect for beach outings and sunset strolls. However, post-summer, when daylight begins to gradually shorten, the rhythm of nature gracefully transitions back, with August seeing a drop to 13 hours and further tapering off into fall. The delightful ebb and flow of daylight throughout the year not only accentuates the island’s landscape but also enriches its vibrant community activities.
In May, Sullivans Island experiences a delightful continuation of its spring breezes, with an average wind speed of 5.2 m/s (12 mph), mirroring the conditions seen in January and March. This consistency suggests a resilient trend of moderate winds throughout the early part of the year. As we transition into the warmer summer months, the wind starts to gently ebb, with notable decreases in July and August, where speeds drop to 4.4 m/s (10 mph) and 3.9 m/s (9 mph), respectively. This gradual decline in wind intensity leads to a more serene coastal atmosphere, perfect for outdoor activities. Overall, May stands out as a pleasantly breezy month, encouraging enjoyment of the island's stunning scenery before the summer calm sets in.
The weather in Sullivans Island 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 Sullivans Island and find detailed weather information for every month.
In May, the weather is significantly warmer, with temperatures ranging from a mild 12°C (55°F) to a high of 31°C (89°F), averaging 23°C (74°F). The month experiences 82 mm (3.2 in) of precipitation over about 8 days and has a humidity level of 78%. In contrast, January temperatures are much cooler, with a minimum of -5°C (24°F) and a maximum of 21°C (70°F), averaging only 12°C (53°F). January sees slightly less precipitation at 66 mm (2.6 in), also spread over 8 days, and a higher humidity of 83%. For more detailed information, you can refer to Sullivans Island weather in January.
When comparing the weather in May and February, it's clear that May tends to be much warmer and more comfortable. In May, temperatures range from a minimum of 12°C (55°F) to a maximum of 31°C (89°F), with an average temperature of 23°C (74°F). In contrast, February's temperatures are cooler, with minimums around 2°C (36°F) and maximums reaching only 21°C (70°F), resulting in a much lower average of 14°C (57°F). Both months exhibit similar levels of precipitation, with May receiving 82 mm (3.2 in) over 8 days and February slightly higher at 91 mm (3.6 in) over 11 days. Interestingly, humidity levels remain fairly consistent, with May at 78% and February at 79%. For more details on February weather specifically, you can check Sullivans Island weather in February.
In comparing the weather in March and May, it's clear that May is significantly warmer, with average temperatures reaching 23°C (74°F) compared to March's 15°C (60°F). While March starts with cooler temperatures, it does feature a comfortable max of 23°C (74°F). Rainfall in May is also higher, totaling 82 mm (3.2 in) over 8 days, whereas March has only 62 mm (2.4 in) over 7 days. Humidity levels remain quite similar, with May at 78% and March at 79%. For more specific weather patterns, you can visit Sullivans Island weather in March.
In comparing the weather of April and May, we see a noticeable increase in temperatures and a decrease in precipitation. May boasts a minimum temperature of 12°C (55°F), averaging 23°C (74°F) and reaching a maximum of 31°C (89°F). In contrast, April has cooler temperatures, with a minimum of 6°C (42°F), an average of 19°C (66°F), and a maximum of 27°C (81°F). Precipitation also varies, with April receiving 105 mm (4.1 in) of rain over 8 days, while May experiences slightly less rainfall at 82 mm (3.2 in) over the same number of days. Both months maintain a consistent humidity level of 78%. For more specifics on April's climate, you can check Sullivans Island weather in April.
May and June both offer warm weather, but they exhibit notable differences in temperature and precipitation. In May, temperatures range from a minimum of 12°C (55°F) to a maximum of 31°C (89°F), with an average of 23°C (74°F). The month experiences about 82 mm (3.2 in) of rainfall over 8 days, resulting in a moderately rainy atmosphere. In contrast, June raises the stakes with warmer temperatures, starting at a minimum of 18°C (64°F) and peaking at 32°C (90°F), while the average rises to 26°C (79°F). Rainfall also increases significantly, reaching 144 mm (5.7 in) over 17 days, maintaining a similar humidity level of 78%. For a closer look at the weather specifics for June, you can visit Sullivans Island weather in June.
In comparing the weather of May and July, it is evident that July experiences warmer temperatures and higher humidity. May typically sees a minimum temperature of 12°C (55°F) and an average of 23°C (74°F), while July’s minimum temperature rises to 22°C (72°F) with an average of 27°C (81°F). Precipitation is also more pronounced in July, with 171 mm (6.7 in) over 16 days, compared to May's 82 mm (3.2 in) over 8 days. Both months maintain relatively high humidity levels, but July's 82% slightly surpasses May's 78%. For more detailed insights, you can refer to Sullivans Island weather in July.
In comparing the weather patterns of May and August, we see distinct differences in both temperature and precipitation. May features a pleasant average temperature of 23°C (74°F), with highs reaching 31°C (89°F), while August maintains a slightly warmer average of 27°C (81°F) alongside similar maximum temperatures. Precipitation is significantly higher in August, with 197 mm (7.8 in) recorded over 21 days compared to May's 82 mm (3.2 in) over just 8 days, making August noticeably wetter. Additionally, humidity levels are also slightly elevated in August at 81%, compared to May’s 78%. For more detailed insights into summer weather, check out Sullivans Island weather in August.
May and September both experience warm temperatures, but September tends to be slightly hotter overall. In May, the average temperature sits at a comfortable 23°C (74°F), with highs reaching 31°C (89°F) and lows around 12°C (55°F). In contrast, September boasts an average temperature of 26°C (79°F), peaking at 32°C (90°F) and with minimum temperatures of 16°C (61°F).
Precipitation is notably higher in September, with 188 mm (7.4 in) falling over 14 days, compared to May’s 82 mm (3.2 in) across just 8 days. Humidity levels are slightly elevated in September at 81%, compared to May’s 78%. For more details on September weather, you can explore Sullivans Island weather in September.
Compared to May, October tends to be cooler, with minimum temperatures dropping from 12°C (55°F) in May to 7°C (46°F) in October. While both months have a similar average temperature of around 23°C (73°F), October's maximum temperature is slightly lower at 29°C (85°F), compared to May's 31°C (89°F). Precipitation levels are almost comparable, with October seeing 85 mm (3.4 in) of rain over 10 days, just slightly more than May's 82 mm (3.2 in) across 8 days. Interestingly, humidity levels remain consistent at 78% for both months. For more details about the weather during this time, check out Sullivans Island weather in October.
May and November present contrasting weather patterns. In May, temperatures typically range from a mild 12°C (55°F) at night to a warm 31°C (89°F) during the day, with an average of 23°C (74°F). Despite having around 82 mm (3.2 in) of precipitation over 8 days, humidity levels are relatively high at 78%. In contrast, November brings cooler temperatures, with a minimum of just 3°C (38°F) and a maximum of 26°C (79°F), averaging 16°C (62°F). It sees slightly higher rainfall at 103 mm (4.1 in) over the same number of days and a humidity level that remains consistent at 82%. For more detailed insights, you might check out Sullivans Island weather in November.
May and December present contrasting weather patterns in terms of temperature and humidity. In May, temperatures range from a mild 12°C (55°F) at night to a warm 31°C (89°F) during the day, with an average temperature of 23°C (74°F). The month experiences moderate rainfall, totaling 82 mm (3.2 in) over about 8 days, accompanied by a humidity level of 78%. In contrast, December has cooler temperatures, with a minimum of 0°C (33°F) and a maximum of 22°C (72°F), averaging around 13°C (56°F). This month sees increased precipitation, with 141 mm (5.6 in) falling over approximately 10 days, and slightly higher humidity at 84%. For more detailed information, you can check Sullivans Island weather in December.
May on Sullivans Island heralds the arrival of warmer temperatures, transitioning from the cooler spring months into the balmy embrace of early summer. With an average temperature inviting outdoor adventures, May sees higher humidity levels and a notable uptick in precipitation, leading to colorful blooms and lush landscapes. Compared to the cooler and drier conditions of the preceding months, this month feels significantly more tropical, making it a picturesque time to explore the island's scenic beauty. Whether you're strolling along the beach or enjoying the vibrant local scene, the pleasant warmth of May truly sets the stage for a delightful seaside experience. For a deeper dive into what to expect throughout the year, check out Sullivans Island Climate.