Last updated: August 28, 2025
May in Saint Croix, Virgin Islands (U.S.) showcases a tropical paradise that balances warmth and humidity. With maximum temperatures soaring to 28°C (83°F) and an average settling around 26°C (80°F), visitors enjoy almost perfect beach weather. Overnight, temperatures dip slightly to a pleasant minimum of 24°C (75°F), offering a comfortable atmosphere for evening strolls. While May witnesses 57 mm (2.2 in) of precipitation over 13 days, this typically refreshes the island without disrupting the allure of sun-soaked adventures. With humidity levels at 79%, the island maintains its lush greenery, making it an ideal destination for those seeking a mix of relaxation and exploration in this vibrant Caribbean gem.
In May, Saint Croix, U.S. Virgin Islands, experiences a delightful transition into the warmth of summer. The temperatures gradually rise, with a minimum of 24°C (75°F) and a comfortable average of 26°C (80°F), peaking at a sunny max of 28°C (83°F). This slight increase in warmth compared to the preceding months signals the approach of summer's heat. Visitors can enjoy the pleasant tropical climate that makes the island an idyllic getaway, with the ocean invitingly warm for swimming and exploration. As daylight lengthens and the sun shines bright, the season's charm is amplified, creating perfect conditions for outdoor adventures and relaxation by the beach.
May marks a notable peak in precipitation for Saint Croix, with 57 mm (2.2 in) of rain falling over 13 days. This increase is a clear signal of the transitioning season, setting the stage for the wetter months ahead. Compared to the previous four months, May's rainfall is significantly higher than January through April, which combined saw less moisture, averaging under 42 mm. The trend of rising precipitation continues into June as well, where rainfall slightly increases to 59 mm (2.3 in), indicating that the summer months are approaching a more humid climate. This gradual uptick in both precipitation amount and the number of rain days showcases the island's shift toward its rainy season, inviting lush greenery and vibrant ecosystems to flourish across the landscape.
In May, Saint Croix, Virgin Islands, typically experiences a noticeable increase in humidity, reaching 79%. This uptick reflects a gradual trend observed throughout the spring months, as the humidity rises from 77% in January through April. Following May, the island sees an even sharper increase in June, hitting 81%, and continues to rise, peaking in July at 83%. The transition into summer marks a higher humidity level, providing a tropical feel that characterizes the Virgin Islands. The consistent humidity levels throughout the year contribute to the lush landscapes and vibrant ecosystems that make Saint Croix a stunning destination.
In May, the UV Index in Saint Croix, Virgin Islands (U.S.) remains consistently high, showcasing an extreme exposure category with a UV Index of 13 and a rapid burn time of just 10 minutes. This trend of elevated UV levels started in February and has persisted through to May, indicating a strong intensity of sunlight that necessitates careful sun protection. As summer approaches, the UV Index continues to hover around the same alarming numbers, reaching its peak in September at 14. For visitors and residents alike, understanding and preparing for these conditions is crucial. Stay informed and take safety measures by checking out the details here: Saint Croix UV Index.
UV Risk Categories
In May, the sun shines brilliantly in Saint Croix, U.S. Virgin Islands, reaching an impressive 361 hours of sunshine, marking the peak of a delightful trend that began in the early months of the year. Following a steady increase from 260 hours in January to the vibrant 349 hours in March, May emerges as a highlight before the slightly mixed conditions of the summer months. This month not only continues to bask in the glow of spring but also paves the way for June's 344 hours, ensuring that beach-goers and sun-seekers enjoy the warm embrace of the tropical sun. With each passing month, the sunlit hours build a captivating narrative of brightness, making May a cherished time for both relaxation and adventure in this idyllic paradise.
In May, the likelihood of enjoying sunny weather in Saint Croix, Virgin Islands is a promising 61%, marking a return to brighter conditions after the cooler months. While January and February showcase higher chances of sunshine, the sunny disposition tends to wane in April, dipping down to 49%. Following May, the summer months experience a notable drop, with June seeing only a 23% chance of sun. This suggests that although May offers a favorable balance of warmth and sunshine, the transition to late spring brings with it an increased risk of overcast skies as the region approaches the humid summer season. Overall, May stands out as a delightful time to soak up the sun before the weather shifts.
In Saint Croix, Virgin Islands, the rhythm of daylight unfolds in a gradual yet captivating manner throughout the year. January and February bask in 11 hours of daylight, providing a serene start to the year. As spring approaches, March and April see a gentle increase to 12 hours, signaling the imminent arrival of longer days. May continues this trend with 12 hours of daylight, setting the stage for the summer months. By June and July, the island experiences its peak with 13 hours of sunlight, offering ample time for beach adventures and outdoor festivities. As summer wanes into August and September, daylight shifts back to 12 hours, while the remainder of the year settles into a cycle of 11 hours in October through December. This rhythmic pattern not only enhances the island's vibrant atmosphere but also invites residents and visitors alike to savor each sunlit moment.
In May, the winds in Saint Croix, Virgin Islands showcase a gentle yet invigorating breeze, with an average speed of 7.2 m/s (16 mph). This slight increase from April's calmer winds reflects a gradual uptick as the island transitions into summer. While January through April generally see lower averages, May maintains a consistent flow, setting the stage for the stronger gusts of June and July. This moderate wind can create perfect conditions for sailing and outdoor activities, enticing locals and visitors alike to bask in the beauty of the Virgin Islands while enjoying the refreshing air. Overall, May presents a delightful prelude to the season's escalating winds, ensuring an enjoyable experience for everyone.
Weather in Saint Croix varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Saint Croix, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between May and January, we see that both months have relatively warm temperatures, but May tends to be slightly warmer. May features a minimum temperature of 24°C (75°F) and an average of 26°C (80°F), peaking at 28°C (83°F), while January's temperatures range from a minimum of 23°C (74°F) to an average of 25°C (78°F), with a maximum of 27°C (81°F). Precipitation is more abundant in May, with total rainfall of 57 mm (2.2 in) occurring over 13 days compared to January's 34 mm (1.3 in) over the same number of days. Additionally, May has a higher humidity level at 79%, whereas January's humidity is slightly lower at 77%. For more detailed information on January's weather, visit Saint Croix weather in January.
When comparing the weather in May and February, we see a slight increase in temperatures during May, with average highs reaching around 28°C (83°F) compared to February’s peak of 27°C (81°F). Additionally, May experiences more precipitation, totaling 57 mm (2.2 in) over approximately 13 days, whereas February sees less rainfall at 31 mm (1.2 in) over 11 days. Humidity levels are also slightly higher in May at 79%, compared to February's 77%. For a detailed look at February’s climate, you can check Saint Croix weather in February.
In comparing the weather of May and March, both months experience relatively warm temperatures, but May tends to be slightly hotter. May’s average temperature reaches around 26°C (80°F) with a maximum of 28°C (83°F), whereas March has a slightly cooler average temperature of 25°C (77°F) and a maximum of 26°C (80°F). Precipitation is more frequent in May, with 57 mm (2.2 in) over 13 days, compared to March, which sees only 34 mm (1.3 in) over 11 days. Humidity levels are similar, with May at 79% and March at 77%. For a more detailed look at March weather specifically, visit Saint Croix weather in March.
In comparing the weather of May and April, we see that both months maintain similar temperatures, with May featuring a minimum of 24°C (75°F) and an average of 26°C (80°F), while April has a minimum of 23°C (74°F) and the same average of 26°C (78°F). The maximum temperatures are also closely aligned, with both months peaking at around 28°C (82°F-83°F). However, May experiences higher rainfall, accumulating 57 mm (2.2 in) over 13 days compared to April's 41 mm (1.6 in) across 10 days. The humidity levels are slightly higher in May at 79%, compared to 78% in April. For more detailed information about April's weather, you can visit Saint Croix weather in April.
May and June present a gradual increase in warmth and humidity, typical for this tropical region. In May, temperatures range from a minimum of 24°C (75°F) to a maximum of 28°C (83°F), with an average of 26°C (80°F). The month sees about 57 mm (2.2 in) of precipitation over 13 days, coupled with a humidity level of 79%. In comparison, June experiences slightly higher temperatures, with minimums of 25°C (77°F) and maximums reaching 29°C (84°F), averaging 27°C (81°F). Precipitation increases marginally to 59 mm (2.3 in) across 17 days, while humidity levels also rise to 81%. For more detailed information, you can check Saint Croix weather in June.
In May, the temperatures in Saint Croix range from a minimum of 24°C (75°F) to a maximum of 28°C (83°F), with an average temperature of 26°C (80°F). The month experiences about 57 mm (2.2 in) of precipitation over 13 days, accompanied by a humidity level of 79%. In contrast, July sees slightly warmer conditions, with temperatures ranging from a minimum of 25°C (78°F) to a maximum of 29°C (84°F) and an average of 27°C (82°F). However, July also has increased precipitation, totaling 92 mm (3.6 in) over 19 days and slightly higher humidity at 83%. For more detailed insights, you can refer to this link: Saint Croix weather in July.
In comparing the weather between May and August, we see a slight increase in temperatures, with May averaging around 26°C (80°F) and August rising to an average of 28°C (82°F). While May offers a maximum temperature of 28°C (83°F), August edges out slightly higher with a peak of 29°C (85°F). However, August brings more precipitation, totaling 123 mm (4.8 in) over 17 days compared to May's 57 mm (2.2 in) across 13 days. Additionally, humidity levels are marginally higher in August at 82%, compared to 79% in May. For a detailed look at August weather specifics, check out Saint Croix weather in August.
When comparing the weather in May and September, both months exhibit warm temperatures, but September tends to be slightly warmer on average. In May, temperatures range from a minimum of 24°C (75°F) to a maximum of 28°C (83°F), with an average of 26°C (80°F). In contrast, September's temperatures start at a minimum of 25°C (78°F) and reach a high of 29°C (85°F), averaging at 28°C (82°F). However, September sees significantly more rainfall, with 156 mm (6.2 in) spread over 20 days, compared to May’s 57 mm (2.2 in) over 13 days, resulting in a slightly higher humidity level of 80%. For a deeper understanding of September's climate, you can check out Saint Croix weather in September.
In May, temperatures in Saint Croix average around 26°C (80°F), with a minimum of 24°C (75°F) and a maximum of 28°C (83°F). The month sees about 57 mm (2.2 in) of precipitation over 13 days, while the humidity remains high at 79%. In contrast, October experiences slightly warmer temperatures, with an average of 27°C (82°F), ranging from a minimum of 25°C (77°F) to a maximum of 29°C (85°F). However, October is significantly wetter, receiving 130 mm (5.1 in) of rain over 18 days, while maintaining the same humidity level of 79%. For more detailed information, you can check Saint Croix weather in October.
In May, Saint Croix experiences warm temperatures with a minimum of 24°C (75°F) and an average of 26°C (80°F), peaking at a comfortable 28°C (83°F). With an average precipitation of 57 mm (2.2 in) over about 13 days, humidity remains relatively high at 79%, creating a tropical feel. In comparison, November sees slightly higher temperatures, with a minimum of 25°C (77°F) and an average of 27°C (81°F), while still reaching a maximum of 28°C (83°F). However, November is wetter, averaging 98 mm (3.9 in) of rain over 17 days, maintaining the same humidity level of 79%. For more details on the weather during this month, visit Saint Croix weather in November.
In comparing the weather between May and December, both months exhibit quite similar temperatures, with minimums around 24°C (75°F), averages at 26°C (79°F), and maximums reaching 28°C (83°F). However, May experiences slightly more precipitation, averaging 57 mm (2.2 in) over 13 days, compared to December's 50 mm (2.0 in) spread over 16 days. Humidity levels are also comparable, with May at 79% and December slightly lower at 78%. For more detailed information about December's weather, you can check Saint Croix weather in December.
As May arrives in Saint Croix, visitors can expect warm temperatures averaging around 26°C (80°F), creating a comfortable atmosphere perfect for outdoor activities. Though the month does bring about some rainfall with approximately 57 mm (2.2 in) spread over 13 days, it is generally warmer compared to the cooler months earlier in the year. Humidity levels hover around 79%, contributing to the tropical feel, yet the island's consistent warmth allows for plenty of sunny breaks between showers. This transitional month sets the stage for the summer season, inviting travelers to experience the lush beauty of the island. For further details on what to expect throughout the year, check out the comprehensive guide at Saint Croix Climate.