Last updated: October 31, 2025
May in Gustavia, Saint Barthélemy offers a delightful mix of warmth and tropical charm. With maximum temperatures reaching 28°C (82°F) and an average of 26°C (79°F), visitors can expect balmy days perfect for beach lounging. The evenings cool down to a comfortable 23°C (74°F), ensuring a restful night. However, it's wise to be prepared for some rain, as the island sees about 47 mm (1.8 in) of precipitation over 12 days during the month. With an average humidity level of 79%, the air carries a refreshing coastal breeze, enhancing the allure of this Caribbean paradise. Embrace the vibrant atmosphere and enjoy all that May has to offer in this tropical haven!
May in Gustavia, Saint Barthélemy ushers in slightly warmer temperatures, marking a transition as the island heads into summer. With a minimum temperature of 23°C (74°F) and a welcoming average of 26°C (79°F), the days start getting notably warmer, reaching a pleasant maximum of 28°C (82°F). This gradual rise from the more tempered April reflects the island's trend of consistent warmth, where each month typically hovers around the mid-20s. Travelers can expect sunny skies and balmy breezes, making May an ideal time to soak up the natural beauty and vibrant atmosphere of this Caribbean paradise.
In May, Gustavia, Saint Barthélemy experiences a noticeable uptick in rainfall, with 47 mm (1.8 in) recorded over approximately 12 days of precipitation. This marks a shift from the relatively dry months of earlier spring, reflecting a trend toward increased moisture as the island transitions closer to summer. As temperatures rise, the frequency of rainfall begins to align with the peak wet season, which reaches its high point in September. This gradual increase in rain not only nourishes the lush landscapes of Saint Barthélemy but also sets the stage for a vibrant, tropical atmosphere, drawing visitors who relish the island's natural beauty amidst the warm, humid weather.
In Gustavia, Saint Barthélemy, May signals a slight uptick in humidity as it reaches 79%, continuing the gradual ascent noticed since the beginning of the year. The humidity levels have consistently hovered around 77% for the first four months, with a gentle rise to 78% in April. As the island transitions into the warmer months, June sees an increase to 81%, setting the stage for the peak humidity of summer. This trend highlights a delightful yet noticeable shift, offering a taste of the tropical experiences that await during the vibrant months ahead.
In Gustavia, Saint Barthélemy, May marks the continuation of an extreme UV Index season, maintaining a high of 13 that started in March. With a burn time as brief as 10 minutes, the sun’s intensity reminds residents and visitors alike to take necessary precautions when enjoying the beautiful outdoor landscapes. This extreme exposure extends through the summer months, with consistent UV levels lasting until October, after which a slight decline occurs. As winter approaches, the UV Index dips to 9, reflecting a much lower risk and requiring less urgent sun protection. For those planning a trip or daily activities, understanding these trends is essential to safely enjoying the island’s sunny paradise. For more detailed information, check out the Gustavia UV Index.
UV Risk Categories
In May, Gustavia, Saint Barthélemy basks in the glow of approximately 363 hours of sunshine, making it one of the sunniest months of the year. This delightful trend continues from April, which shared the same plentiful brightness, and it precedes July, which leads the pack with a peak of 364 hours. As the Caribbean spring unfolds into summer, May stands out not just for its radiant sunshine but also for the gradual decline in daylight hours that follows, as both June and August offer slightly less light. Overall, this month emphasizes the region's allure, with its bright, sun-filled days inviting travelers to revel in the vibrant atmosphere of this tropical paradise.
In Gustavia, Saint Barthélemy, May brings a moderate 60% chance of sunny weather, a welcome improvement after the notably lower figures of April at 47%. This month positions itself favorably among its neighboring months, showcasing a trend of increasing sunshine as we transition from the cooler months of January through April. Following May, the likelihood of sunshine dips significantly in June to 25%, making it a prime time for visitors to bask in the beautiful Caribbean sun before the rainy season sets in. With such favorable odds, May is an ideal time to enjoy outdoor activities and soak up the vibrant island atmosphere.
As spring gives way to summer in Gustavia, Saint Barthélemy, the daylight duration experiences a delightful transition. In May, the island enjoys an inviting 12 hours of daylight, consistent with the previous months of March and April. This marks a period of steady brightness that peaks in June and July, when daylight increases to a generous 13 hours. As the year progresses into late summer and fall, daylight begins to gently taper off, returning to 12 hours in August and September, before descending back to the 11-hour mark by October, which persists through the rest of the year. This rhythmic cycle of light not only enhances outdoor adventures but also creates a vibrant atmosphere throughout the island.
In Gustavia, Saint Barthélemy, the month of May experiences a gentle embrace of wind, with an average speed of 7.1 m/s (16 mph). This marks a slight dip from the brisker breezes of February, which peaks at 9.0 m/s (20 mph), but remains consistent with the calming winds of March and August at 7.3 m/s and 7.1 m/s respectively. As spring transitions into summer, the breezes pick up in June and July, reaching 8.1 m/s and 8.4 m/s, hinting at the vibrant energy of the approaching season. Overall, May presents a delightful wind pattern, perfect for sailing and sun-soaked adventures, bridging the cooler spring winds with the warm summer gusts.
Weather in Gustavia varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Gustavia, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of May and January, both months exhibit warm temperatures, but with slight variations. May typically sees a minimum temperature of 23°C (74°F) and an average high of 28°C (82°F), while January has similar minimums but averages a bit cooler at 25°C (78°F). Precipitation levels also differ, with May receiving about 47 mm (1.8 in) of rain over 12 days, compared to January's 35 mm (1.4 in) spread over 13 days. Humidity is fairly consistent, with May at 79% and January slightly lower at 77%. For a more detailed look at January weather, you can visit Gustavia weather in January.
In comparing the weather between May and February, it is clear that both months offer warm temperatures, but May tends to be slightly warmer overall. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 28°C (82°F), with an average of 26°C (79°F). February, on the other hand, sees a slightly lower temperature range, with a minimum of 22°C (72°F) and a maximum of 26°C (80°F), averaging 25°C (77°F). Additionally, May experiences more precipitation, with 47 mm (1.8 in) over about 12 days, compared to February's 35 mm (1.4 in) over 11 days. Humidity is also marginally higher in May at 79%, compared to 77% in February. For more specific details on February weather, you can refer to this Gustavia weather in February.
In comparing the weather of May and March, it is evident that both months experience warm temperatures, though May tends to be slightly warmer overall. May sees a minimum temperature of 23°C (74°F) and averages around 26°C (79°F), peaking at 28°C (82°F). In contrast, March has a similar minimum of 22°C (73°F) but records a slightly lower average of 25°C (77°F) and a maximum of 26°C (79°F). Precipitation is also more prominent in May, with 47 mm (1.8 in) over 12 days, while March receives only 27 mm (1.1 in) across 10 days. Both months share relatively high humidity levels, with May at 79% and March at 77%. For those interested in the specifics of March weather, more details can be found here: Gustavia weather in March.
In comparing the weather between April and May, both months maintain a warm temperature range, with May slightly warmer on average. May features a minimum temperature of 23°C (74°F), an average of 26°C (79°F), and a maximum of 28°C (82°F), while April presents a similar minimum of 23°C (74°F), an average of 25°C (78°F), and a maximum of 27°C (81°F). Precipitation levels rise in May, with 47 mm (1.8 in) of rain over 12 days compared to April’s 34 mm (1.3 in) across 11 days. Notably, humidity is quite comparable, with May at 79% and April at 78%. For more specific details, you can check this link: Gustavia weather in April.
In May, the weather is characterized by a warm average temperature of 26°C (79°F) with a minimum of 23°C (74°F) and a maximum of 28°C (82°F). The month has a modest amount of rainfall, totaling 47 mm (1.8 in) over 12 days, accompanied by a humidity level of 79%. In comparison, June sees a slight increase in temperatures, with an average of 27°C (81°F), a minimum of 25°C (76°F), and the same maximum of 28°C (84°F). Precipitation rises slightly to 49 mm (1.9 in) spread over 14 days, and humidity also increases to 81%. For more detailed information, you can check Gustavia weather in June.
In May, the weather tends to be warm and humid, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 28°C (82°F) and an average of 26°C (79°F). However, it experiences moderate precipitation, with 47 mm (1.8 in) spread across 12 days and humidity levels around 79%.
In contrast, July sees slightly warmer weather, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F) and an average of 27°C (81°F). However, July is also wetter, receiving 80 mm (3.2 in) of rainfall over 17 days, which contributes to a higher humidity of 83%.
For more details about the weather in July, you can visit Gustavia weather in July.
In May, the weather tends to be warm with average temperatures around 26°C (79°F), peaking at a maximum of 28°C (82°F). The month experiences a moderate amount of rain, with 47 mm (1.8 in) of precipitation over about 12 days and a humidity level of 79%. In contrast, August is slightly warmer, with an average temperature of 28°C (82°F) and highs reaching 29°C (84°F). However, this month sees increased rainfall, totaling 86 mm (3.4 in) across approximately 16 days, and humidity rises marginally to 82%. Overall, August is warmer and wetter compared to May. For more details on August weather, you can visit Gustavia weather in August.
In May, temperatures in Gustavia typically range from a minimum of 23°C (74°F) to a maximum of 28°C (82°F), with an average temperature of 26°C (79°F). The month experiences moderate rainfall, totaling around 47 mm (1.8 in) over approximately 12 days, and humidity levels are relatively high at 79%.
In contrast, September sees slightly warmer temperatures, with a minimum of 25°C (77°F) and a maximum of 29°C (85°F), averaging at 28°C (82°F). However, it is also much wetter, with precipitation reaching 152 mm (6.0 in) over 22 days and humidity remaining comparable at 80%. For more detailed information, you can visit Gustavia weather in September.
In May, the weather features warm temperatures with a minimum of 23°C (74°F) and an average of 26°C (79°F), while precipitation is relatively low at 47 mm (1.8 in) across 12 days. In contrast, October experiences slightly warmer temperatures, with a minimum of 25°C (77°F) and an average of 27°C (81°F), but higher precipitation levels of 113 mm (4.4 in) over 19 days. Both months share similar humidity levels at 79%, but October tends to be rainier, making the transition between these two months quite noticeable. For more details about October weather, check out Gustavia weather in October.
May and November share similar average temperatures, with May having a slightly lower minimum and maximum range, while November offers a more consistent warmth throughout the month. In May, the temperatures range from a minimum of 23°C (74°F) to a maximum of 28°C (82°F) with an average of 26°C (79°F). November, on the other hand, features a minimum of 24°C (76°F) and a maximum of 28°C (83°F), maintaining a comfortable average of 27°C (80°F). However, November experiences significantly higher precipitation, totaling 95 mm (3.8 in) over 17 days compared to May's 47 mm (1.8 in) across 12 days, despite both months having the same humidity level of 79%. For a more detailed look at November's weather patterns, you can visit Gustavia weather in November.
In May, the weather features warm temperatures with a minimum of 23°C (74°F), an average of 26°C (79°F), and a maximum of 28°C (82°F). This month also experiences approximately 47 mm (1.8 in) of precipitation over about 12 days, alongside a humidity level of 79%. In contrast, December sees a slightly higher minimum temperature of 24°C (75°F), while the average and maximum temperatures remain the same at 26°C (79°F) and 28°C (82°F), respectively. Precipitation in December increases to 48 mm (1.9 in) spread across around 17 days, with a slightly lower humidity of 78%. For more detailed information about the weather in this period, visit Gustavia weather in December.
As May unfolds in Gustavia, visitors can expect warm temperatures and a lush, tropical atmosphere that sets it apart from the cooler, drier months. With an average temperature hovering around 26°C (79°F) and humidity levels at a notable 79%, the sensation of warmth is quite palpable, encouraging beach strolls and outdoor adventures. While occasional rainfall—with about 12 days of drizzle totaling 47 mm—offers a refreshing break from the heat, it contributes to the island's vibrant scenery and lush vegetation. For those seeking to explore the unique beauty and climate of Gustavia in May, further insights can be found at Gustavia Climate.