Last updated: October 31, 2025
June in Koolbaai, Sint Maarten, welcomes warm and inviting weather, with maximum temperatures reaching 28°C (83°F) and an average of 27°C (81°F). Nights are pleasantly mild, with minimum temperatures around 25°C (76°F). However, this month brings a fair share of rainfall, accumulating to 50 mm (2.0 in) over 14 days, contributing to the island’s lush greenery. Humidity levels hover at a tropical 81%, enhancing the island's vibrant atmosphere. Enjoy the blend of sunshine and refreshing showers that define Koolbaai's June weather!
In June, Koolbaai, Sint Maarten, welcomes the summer warmth with a noticeable rise in temperatures. The minimum temperatures start at a cozy 25°C (76°F), providing a comfortable backdrop for both relaxation and adventure. As the days unfold, the average temperature reaches a delightful 27°C (81°F), while the maximum climbs to 28°C (83°F), hinting at the vibrant, sun-soaked days that define the island's charm. This month marks a transition as temperatures steadily inch upward from the mild conditions of earlier months, setting the stage for the sultry summer ahead. Overall, June offers a perfect blend of warmth and tropical allure, enticing visitors to explore all that this beautiful destination has to offer.
June in Koolbaai, Sint Maarten marks a subtle uptick in precipitation, with 50 mm (2.0 in) of rainfall spread over 14 days. This is a noticeable increase from May's totals of 49 mm (1.9 in), setting the stage for the wetter months ahead. As the tropical climate begins to shift, the likelihood of rain increases, paving the way for July's dramatic rise to 83 mm (3.3 in). The gradual transition into the peak rainy season reveals a trend where each subsequent month adds more rainfall days and higher amounts, culminating in September's peak at 161 mm (6.3 in). June serves as a harbinger of these changes, illustrating the Caribbean's dynamic weather patterns while maintaining the lush beauty synonymous with the region.
In Koolbaai, Sint Maarten, the month of June marks a notable increase in humidity, rising to 81% from the previous month's 79%. This trend of progressively increasing humidity is evident as the year unfolds; starting from a stable 77% in the early months of the year, figures gradually climb, peaking in July at 83%. The transition from May to June reflects the onset of summer, bringing warmer temperatures and a noticeable rise in moisture levels that continues into the heart of the season. Observing this pattern, it’s clear that humidity in Koolbaai tends to elevate as summer approaches, creating a lush and vibrant atmosphere that defines the island's tropical charm.
In June, Koolbaai, Sint Maarten experiences a powerful UV Index of 13, categorizing it as extreme, with a burn time of just 10 minutes. This trend of heightened UV exposure continues from the preceding months of April to May, where the UV Index remains consistently high at 13. As summer approaches, the UV Index will stay elevated, reaching 14 in September before gradually decreasing in the fall. It’s essential for residents and visitors alike to be mindful of sun safety during these months. For more detailed insights and safety tips, check out Koolbaai UV Index.
UV Risk Categories
June in Koolbaai, Sint Maarten, offers a delightful burst of sunshine, boasting 344 hours of radiant light. This month seamlessly follows the sun-soaked May, which recorded the year’s peak with 363 hours. As the calendar transitions into summer, June holds its own, remaining consistently bright and vibrant, just slightly below the previous month’s record. The trend shows that from January to June, sunshine hours steadily increase, creating a cheerful atmosphere that invites both residents and visitors to bask in the warm glow of the island. With glorious daylight extending into July, which continues this sunny streak at 362 hours, June stands out as a pivotal point in Sint Maarten’s sun-drenched year, ensuring that the balmy days are perfect for beach outings and outdoor adventures.
In Koolbaai, Sint Maarten, the likelihood of sunny weather takes a noticeable dip in June, with only a 25% chance of sunshine. This low probability contrasts starkly with the sunnier months of February and March, both boasting a robust 72% chance of sun. Following a relatively bright May at 60%, June marks the beginning of a trend towards more overcast days, as the region braces for the slightly more unpredictable summer weather. Nonetheless, as the year progresses, July and September see a gradual rebound to 50% and 58% respectively, suggesting that while June may be less reliable for sunny skies, the allure of summer returns in the following months.
As summer approaches in Koolbaai, Sint Maarten, June welcomes an enticing 13 hours of daylight, marking a notable increase from the previous months. This gradual trend of extending daylight begins in March, where the sun starts to linger a bit longer each day, continuing through April and May. By June, the extra hours not only enhance the vibrant tropical atmosphere but also invite more opportunities for outdoor adventures. Following June, daylight remains consistent at 13 hours in July, before gently tapering off again in the later summer months. This natural rhythm of longer days underscores the allure of completing warm-weather activities, basking in the sun, and enjoying the breathtaking sunsets that Koolbaai has to offer.
In Koolbaai, Sint Maarten, June brings a refreshing average wind speed of 8.2 m/s (18 mph), setting the stage for invigorating summer breezes that beckon both locals and visitors to enjoy outdoor activities. As the island transitions from the calmer winds of April and May, this uptick signals a shift toward more consistent breezy conditions, continuing into the slightly brisker July, which sees an even higher average of 8.5 m/s (19 mph). Notably, while the spring months flirt with lighter gusts, June’s winds create an ideal atmosphere for water sports and beachfront relaxation, promising to enhance the island's charm and allure during the summer season.
Weather in Koolbaai varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Koolbaai, focusing on differences in temperature, rainfall, humidity, and UV levels.
In June, the weather in Koolbaai is characterized by warmer temperatures, with a minimum of 25°C (76°F) and an average around 27°C (81°F), peaking at a maximum of 28°C (83°F). The month also experiences higher precipitation, totaling 50 mm (2.0 in) over 14 days, along with a humidity level of 81%. In contrast, January presents slightly cooler conditions, with temperatures ranging from a minimum of 23°C (74°F) to an average of 25°C (78°F) and a maximum of 27°C (81°F). Additionally, January sees less rainfall, with only 35 mm (1.4 in) of precipitation over the same number of days and a lower humidity of 77%. For more specifics on January weather, you can visit Koolbaai weather in January.
June and February showcase distinct weather patterns, with June typically warmer and more humid. In June, temperatures range from a minimum of 25°C (76°F) to a maximum of 28°C (83°F), with an average of 27°C (81°F) and higher humidity at 81%. The month experiences around 50 mm (2.0 in) of precipitation over approximately 14 days. In contrast, February presents milder temperatures, with a minimum of 22°C (72°F), an average of 25°C (77°F), and a maximum of 26°C (80°F). It also sees less rainfall, totaling about 35 mm (1.4 in) over 11 days and a humidity level of 77%. For a closer look at February weather specifics, you can refer to Koolbaai weather in February.
In March, the weather tends to be milder with temperatures ranging from a minimum of 22°C (73°F) to a maximum of 26°C (79°F), and an average of 25°C (77°F). The month sees an average precipitation of 27 mm (1.1 in) over about 10 days, with humidity levels around 77%. In contrast, June brings warmer conditions with minimum temperatures starting at 25°C (76°F) and peaking at 28°C (83°F), averaging 27°C (81°F). It also experiences higher rainfall, totaling about 50 mm (2.0 in) across 14 days, along with increased humidity at 81%. For more details on March weather patterns, you can check out Koolbaai weather in March.
In comparing the weather between June and April, June experiences slightly warmer temperatures, with a minimum of 25°C (76°F) and an average of 27°C (81°F), compared to April's minimum of 23°C (74°F) and an average of 25°C (78°F). Additionally, June has a higher maximum temperature of 28°C (83°F), while April peaks at 27°C (81°F). Precipitation also increases in June, with 50 mm (2.0 in) over 14 days, compared to April's 35 mm (1.4 in) over 11 days. Both months exhibit high humidity, but June is slightly more humid at 81% compared to April's 78%. For more details on the weather conditions in April, you can visit Koolbaai weather in April.
In comparing the weather between June and May, June tends to be slightly warmer, with an average temperature of 27°C (81°F) compared to May's average of 26°C (79°F). Both months experience similar maximum temperatures, with June peaking at 28°C (83°F) and May also reaching 28°C (82°F). However, June sees a marginally higher minimum temperature of 25°C (76°F) versus May's 23°C (74°F). Precipitation levels are quite comparable, with June receiving 50 mm (2.0 in) over 14 days and May experiencing 49 mm (1.9 in) across 11 days. Humidity is also slightly elevated in June at 81%, compared to 79% in May. For more detailed insights, check out the detailed forecast here: Koolbaai weather in May.
In comparing the weather between June and July, we see that both months maintain a similar average temperature of 27°C (81°F), with July experiencing a slight increase in the maximum temperature, reaching 29°C (84°F). While June has a total precipitation of 50 mm (2.0 in) over 14 days, July sees a significant rise in rainfall, accumulating 83 mm (3.3 in) over 17 days. Additionally, humidity levels increase marginally from 81% in June to 83% in July, creating a slightly muggier atmosphere. For more specific insights into July weather patterns, you can check out this link: Koolbaai weather in July.
In comparing the weather between June and August, it is evident that temperatures remain relatively consistent. June has a minimum temperature of 25°C (76°F) and an average of 27°C (81°F), while August sees a slight increase with a minimum of 25°C (78°F) and an average of 28°C (82°F). Both months experience high humidity levels, with June at 81% and August at 82%. However, August sees more precipitation, totaling 87 mm (3.4 in) over 16 days, compared to June's 50 mm (2.0 in) over 14 days. For more details on the weather in August, you can visit Koolbaai weather in August.
In June, the weather features a minimum temperature of 25°C (76°F) and an average of 27°C (81°F), peaking at a maximum of 28°C (83°F). However, it experiences relatively lower precipitation, totaling 50 mm (2.0 in) over 14 days, with humidity around 81%. In contrast, September sees a slight increase in temperatures, with minimums remaining at 25°C (77°F), an average of 28°C (82°F), and a maximum reaching 29°C (85°F). Nonetheless, it also brings significantly higher rainfall, totaling 161 mm (6.3 in) across 22 days, with humidity slightly decreasing to 80%. For a detailed breakdown, you can visit Koolbaai weather in September.
In comparing the weather between June and October, both months exhibit similar average temperatures, with June experiencing a minimum of 25°C (76°F) and October slightly higher at a minimum of 25°C (77°F). The average temperature remains constant at 27°C (81°F) for both months, but October boasts a marginally higher maximum of 29°C (84°F). When it comes to precipitation, October sees a notable increase, with 113 mm (4.5 in) over 18 days, compared to June's 50 mm (2.0 in) across 14 days. Despite October's increased rainfall, humidity levels are only slightly lower at 79%, compared to June's 81%. For more detailed information, you can check Koolbaai weather in October.
June and November share similar temperature ranges, with both months featuring averages around 27°C (81°F) and maximums peaking at 28°C (83°F). However, November tends to be wetter, receiving 96 mm (3.8 in) of precipitation over 17 days compared to June's 50 mm (2.0 in) over 14 days. Interestingly, the humidity remains high in both months, though it slightly decreases in November to 79% from June's 81%. This shift in rainfall patterns and humidity makes November a distinctly more humid and wetter month overall. For a detailed look at weather patterns, you can visit Koolbaai weather in November.
In June, the weather is warm and humid, with average temperatures around 27°C (81°F), reaching a maximum of 28°C (83°F). It experiences approximately 50 mm (2.0 in) of rainfall spread over 14 days, contributing to a humidity level of 81%. In contrast, December offers slightly cooler temperatures, with an average of 26°C (79°F) and a similar maximum of 28°C (82°F). Precipitation is a touch less at 48 mm (1.9 in) over 16 days, accompanied by a slightly lower humidity of 78%. Both months showcase warm tropical climates, but December tends to be a bit drier and less humid. For more detailed information on December weather, check out Koolbaai weather in December.
June in Koolbaai showcases a blend of warmth and moisture, with temperatures generally falling within the comfortable range of mid to high 20s°C (low to mid 80s°F). Unlike the cooler, drier months preceding it, June embraces higher humidity at around 81%, contributing to a more tropical feel. Rain becomes more frequent, with nearly half the month experiencing precipitation, which adds a refreshing touch to the warm days. This shift not only influences the overall climate but also enhances the lush greenery of the surroundings, setting the stage for vibrant summer months ahead. For more in-depth insights, visit Koolbaai Climate.