Last updated: October 31, 2025
In Koolbaai, Sint Maarten, May ushers in a delightful tropical climate characterized by a maximum temperature of 28°C (82°F) and an average of 26°C (79°F), providing the perfect backdrop for outdoor activities. Although the minimum temperature dips to a comfortable 23°C (74°F), the atmosphere remains warm and inviting. May sees a total precipitation amount of 49 mm (1.9 in) over approximately 11 rainy days, contributing to the lush greenery of the region. With humidity levels around 79%, the air retains a refreshing charm, making it an ideal time to explore the vibrant beauty and rich culture of this Caribbean paradise.
In Koolbaai, Sint Maarten, May marks a delightful transition into the warmer months, with temperatures gently rising. The month begins with a comfortable minimum of 23°C (74°F), similar to previous months, but the average warms to a pleasant 26°C (79°F), peaking at a cozy 28°C (82°F). This gradual increase signifies the island's approach to summer, inviting visitors to enjoy the sun-soaked beaches and vibrant outdoor activities. As the mercury climbs, the weather remains consistently mild, mirroring the steady temperatures seen since January, while hinting at the hotter months of June and July just around the corner. This makes May an ideal time for both relaxation and adventure in this Caribbean paradise.
May in Koolbaai, Sint Maarten, marks a noticeable shift in precipitation patterns as the island transitions into the summer months. With 49 mm (1.9 in) of rain falling over 11 days, May sees an increase compared to the preceding months, suggesting a ramp-up in moisture before the more intense rainy season. This uptick corresponds with a spike in precipitation expected in June and July, where rainfall averages 50 mm and 83 mm respectively. The trend from this data indicates growing humidity and cloudy periods, urging residents and visitors alike to embrace the island’s natural beauty while bracing for the showers that enrich the lush landscape. The balance of sun and rain in May creates a vibrant atmosphere, making it a picturesque setting for relaxation and exploration.
As the month of May unfolds in Koolbaai, Sint Maarten, humidity begins to creep upward, reaching 79%—a slight increase from the 78% recorded in April. This gradual rise reflects a broader trend of escalating humidity levels as the year progresses, with June set to tip the scales even higher at 81%. Such humidity patterns can evoke the essence of tropical living, providing lush landscapes and a vibrant atmosphere. Visitors should prepare for this mild uptick, as it signifies the onset of summer, enhancing the island's lush beauty while enveloping all in its warm, inviting embrace.
As May arrives in Koolbaai, Sint Maarten, the UV Index remains at a striking 13, placing it firmly in the extreme exposure category, much like the preceding months. With a rapid burn time of just 10 minutes, individuals need to be vigilant about sun protection. This trend of heightened UV levels continues from January's 9 to an intense 14 by September, highlighting the region’s persistent summer sun. As temperatures rise and the days grow longer, staying informed and protective is crucial for enjoying the beautiful outdoors. For more details, check the Koolbaai UV Index.
UV Risk Categories
May shines brightly in Koolbaai, Sint Maarten, boasting an impressive 363 hours of sunshine—the highest for the year. As the spring transitions into summer, the increase from 349 hours in April reflects the allure of longer, sun-drenched days, inviting visitors to bask in the tropical warmth. Following May, sunshine remains abundant in June and July, with 344 and 362 hours respectively, ensuring that the sunny vibe continues as summer unfolds. This upward trend in sunlight not only enhances outdoor activities but also paints the breathtaking landscapes of Sint Maarten in vibrant hues, making May an ideal time to indulge in the island's beauty.
In Koolbaai, Sint Maarten, May brings a 60% chance of sunny weather, showcasing a pleasant transition into the warmer months. This likelihood is a notable improvement from April's 48%, suggesting a shift towards more favorable conditions. Interestingly, as the year progresses, we observe a pattern where the peak sunny months are primarily in the earlier part of the year, with February and March both boasting 72% chances. However, as summer approaches, the likelihood of sunshine tends to dip, particularly in June at just 25%. May stands out as a sweet spot, nestled between higher chances in the spring and the onset of the summer slump, making it an ideal month for sun-seekers.
In Koolbaai, Sint Maarten, the daylight duration exhibits a delightful rhythm throughout the year. Starting with 11 hours in both January and February, the days gradually lengthen as spring approaches, reaching 12 hours by March and maintaining that duration through April and May. As summer arrives in June and July, daylight peaks at 13 hours, offering ample time to enjoy the island’s beautiful beaches and vibrant sunsets. Following this pinnacle, the hours of daylight gently wane, returning to 12 hours in August and September before settling back to 11 hours from October through December. This gradual shift not only marks the changing seasons but also creates a picturesque backdrop for both visitors and locals alike.
May in Koolbaai, Sint Maarten, brings a refreshing average wind speed of 7.2 m/s (16 mph), continuing the island's trend of moderate breezes as the year progresses. Following the milder winds of April, May gently ramps up the air movement, aligning with the slightly more invigorating conditions felt from February to June. This month’s winds are characteristic of the transition into summer, setting the stage for the stronger gusts that arrive in July. As travelers bask in the warmth of May, the gentle breezes provide a perfect backdrop for outdoor adventures, making it an ideal time to explore the vibrant scenery and crystal-clear waters of this Caribbean paradise.
Weather in Koolbaai varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Koolbaai, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in May and January, both months share warm temperatures, but May is slightly warmer with an average temperature of 26°C (79°F) compared to January's 25°C (78°F). May experiences higher maximum temperatures, peaking at 28°C (82°F), while January's maximum reaches 27°C (81°F). Additionally, May sees more precipitation, with 49 mm (1.9 in) over 11 days, whereas January has 35 mm (1.4 in) spread across 14 days. Humidity levels are fairly similar, with May at 79% and January at 77%. For more detailed information, check out Koolbaai weather in January.
May and February present quite similar weather patterns, but with notable differences in temperature and precipitation. In May, the temperatures are slightly warmer with a minimum of 23°C (74°F) and an average of 26°C (79°F), compared to February, which has a minimum of 22°C (72°F) and an average of 25°C (77°F). While both months experience humidity levels around 79% in May and 77% in February, May sees increased precipitation at 49 mm (1.9 in) over 11 days, compared to February's 35 mm (1.4 in) across the same number of days. This makes February a slightly drier month, potentially more appealing for outdoor activities. For more insights on February weather, you can check out Koolbaai weather in February.
When comparing the weather in May and March, we notice that May typically experiences slightly warmer temperatures, with an average of 26°C (79°F) and a maximum of 28°C (82°F), compared to March's average of 25°C (77°F) and maximum of 26°C (79°F). Both months have similar minimum temperatures, with March being just 1°C cooler at 22°C (73°F). In terms of precipitation, May receives more rainfall, totaling 49 mm (1.9 in) over 11 days, while March has less at 27 mm (1.1 in) over 10 days. Humidity levels are also slightly higher in May at 79%, compared to 77% in March. For a detailed look at March weather specifics, you can visit Koolbaai weather in March.
In comparing the weather between April and May, we see some notable differences. May tends to be slightly warmer, with average temperatures peaking at 26°C (79°F) compared to April's 25°C (78°F). Both months share a minimum temperature of 23°C (74°F), but May has a maximum of 28°C (82°F), a degree higher than April's 27°C (81°F). Precipitation is also higher in May, with 49 mm (1.9 in) over 11 days, compared to April’s 35 mm (1.4 in) under the same number of rainy days. Humidity levels remain similar, with May at 79% and April at 78%. For more detailed insights, you can check Koolbaai weather in April.
In comparing the weather between May and June, we notice a slight increase in temperatures and humidity levels. May features a minimum temperature of 23°C (74°F) and an average of 26°C (79°F), while June sees a higher minimum of 25°C (76°F) and a comparable average of 27°C (81°F). Both months have similar maximum temperatures, with June peaking at 28°C (83°F), just like May. Precipitation also shows a minor rise, with June recording 50 mm (2.0 in) over 14 days compared to May's 49 mm (1.9 in) across 11 days. Furthermore, humidity levels increase slightly from 79% in May to 81% in June, indicating that June tends to feel a bit more humid than its predecessor. For more detailed information, visit Koolbaai weather in June.
In May, the weather typically features a minimum temperature of 23°C (74°F) and averages around 26°C (79°F), with a maximum reaching 28°C (82°F). The month sees about 49 mm (1.9 in) of precipitation over 11 days, accompanied by a humidity level of 79%. In contrast, July experiences slightly warmer temperatures, with a minimum of 25°C (77°F), an average of 27°C (81°F), and a maximum of 29°C (84°F). However, rainfall increases to 83 mm (3.3 in) over 17 days, and humidity rises to 83%. For more details on the weather in July, you can check out Koolbaai weather in July.
In comparing the weather between May and August, May tends to have slightly cooler temperatures, with an average of 26°C (79°F) compared to August's warmer average of 28°C (82°F). While both months experience significant humidity—79% in May and 82% in August—August also sees increased precipitation, receiving 87 mm (3.4 in) over 16 days compared to May’s 49 mm (1.9 in) over 11 days. As summer progresses into August, the weather becomes more intense, making it vital to prepare for both the heat and potential rain. For more details, you can check out the Koolbaai weather in August.
May typically offers warmer weather, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 28°C (82°F) and a total precipitation of 49 mm (1.9 in) over about 11 days. The humidity hovers around 79%, creating a warm but often pleasant atmosphere. In contrast, September experiences slightly higher temperatures, with lows of 25°C (77°F) and highs reaching 29°C (85°F). However, it also sees significantly increased rainfall, totaling 161 mm (6.3 in) across 22 rainy days, while humidity remains comparable at 80%. For more specific information on weather in September, you can check Koolbaai weather in September.
May and October showcase a similar humidity level at 79%, but the temperatures in October are slightly higher, with minimums of 25°C (77°F) compared to May's 23°C (74°F). The average temperature in October is 27°C (81°F), only a degree higher than May's 26°C (79°F), while maximums reach 29°C (84°F) in October, giving it a warmer edge. Additionally, October experiences significantly more rainfall, totaling 113 mm (4.5 in) over 18 days, compared to May's 49 mm (1.9 in) over just 11 days. This means October is not only warmer but also notably wetter, altering the overall feel of the month. For more details, you can check the Koolbaai weather in October.
May and November in Koolbaai exhibit similar temperature profiles, with both months featuring average highs around 28°C (82°F) and average lows close to 23-24°C (74-76°F). However, November experiences a slight increase in overall precipitation, receiving 96 mm (3.8 in) over an average of 17 rainy days compared to May's 49 mm (1.9 in) across 11 days. Despite the increase in rainfall, humidity remains constant at 79% in both months, contributing to the tropical feel. For more specific details on November weather, check out Koolbaai weather in November.
In comparing the weather of May and December, both months exhibit similar temperature ranges, with average daily temperatures hovering around 26°C (79°F) and maximums reaching 28°C (82°F). May features a slightly lower minimum temperature of 23°C (74°F), while December's minimum is a touch warmer at 24°C (75°F). Precipitation levels are comparable, with May receiving 49 mm (1.9 in) over 11 days and December slightly less at 48 mm (1.9 in) but spread across 16 days. Humidity remains quite similar as well, with May at 79% and December at 78%. For a detailed look at the weather in December, you can check Koolbaai weather in December.
As May unfolds in Koolbaai, the weather shifts into a pleasant phase, characterized by warm temperatures averaging around 26°C (79°F). While it's ideal for outdoor activities, it's important to note that this month also sees an increase in humidity levels, creating a slightly muggy atmosphere. With approximately 11 rainy days, totaling 49 mm (1.9 in) of precipitation, May stands out as a transition month—less dry than the peak months but more temperate than the wettest season. If you're curious about how this month compares with others throughout the year, explore more in-depth information at Koolbaai Climate.