Last updated: October 31, 2025
In October, Koolbaai, Sint Maarten experiences warm weather characterized by average temperatures around 27°C (81°F), peaking at a maximum of 29°C (84°F) and a minimum of 25°C (77°F). This tropical paradise sees a notable humidity level of 79%, creating a lush and vibrant environment. Rainfall is frequent, with 113 mm (4.5 in) of precipitation over the month, spread across approximately 18 days. Visitors can expect occasional showers intertwined with sunlit afternoons, making it an ideal time to enjoy the island’s beauty while embracing the refreshing Caribbean landscape.
As October rolls into Koolbaai, Sint Maarten, temperatures are invitingly warm, with minimums around 25°C (77°F) and averaging 27°C (81°F). The maximum temperatures can reach up to 29°C (84°F), making it a delightful month for beachgoers and sun seekers. Notably, temperatures in October maintain a steady warmth that has been building since the summer months, following a trend of gradual increases leading up to this point. This month marks a subtle shift from the hotter summer, but still offers the kind of tropical warmth that is perfect for exploring the island’s stunning beaches or indulging in vibrant local culture.
In October, Koolbaai, Sint Maarten experiences a significant boost in precipitation, with 113 mm (4.5 in) of rainfall over 18 days. This marks a decrease from the exceptionally wet September, which recorded 161 mm (6.3 in), but still keeps October among the wetter months of the year. Notably, the rainfall amounts during this time reflect a transitional shift from the summer season's peak, evidenced by the July and August averages of 83 mm and 87 mm respectively. The sustained precipitation in October indicates a gradual easing of the rainy season, setting the stage for the drier months that follow. Overall, while October presents a substantial wetness compared to many earlier months, it serves as a reminder of the Caribbean’s dynamic climate patterns.
In October, humidity in Koolbaai, Sint Maarten settles at a comfortable 79%, reflecting a slight dip from the peak of 83% observed in July. Throughout the year, humidity levels show a subtle upward trend from 77% in the earlier months of January to March, gradually increasing as summer approaches. The rise peaks in mid-summer with levels reaching the highest point in July. As the island transitions into the fall months, humidity begins to recede slightly, bringing October's figures closer to those of November and December, which maintain a steady 79% and 78%, respectively. This pleasant humidity offers a tropical charm, ensuring that while the air remains warm, it is still comfortable for outdoor adventures.
As October arrives in Koolbaai, Sint Maarten, the UV Index remains notably high at 12, categorized as extreme, with a burn time of just 10 minutes. This trend of elevated UV levels continues from September, where the index peaked at 14. In fact, throughout the year, Koolbaai experiences consistently high UV indexes ranging from 9 in January and November to a striking 14 in September. This pattern underscores the need for residents and visitors alike to prioritize sun protection, especially during the peak months from February through September when numbers climb to their extreme highs. As always, stay informed and plan your outdoor activities accordingly by checking the latest UV forecasts at Koolbaai UV Index.
UV Risk Categories
As the October sun graces Koolbaai, Sint Maarten, visitors can bask in an inviting 322 hours of glorious sunshine. This vibrant month, nestled between the peak summer and the cooler winter, showcases a steady pattern of sunshine hours that remains consistent throughout the year. While May takes the crown with the highest sunshine at 363 hours, October holds its own, maintaining a warm glow similar to the previous month of September, which also offered a pleasant 322 hours. This soft transition into fall provides an ideal backdrop for indulging in outdoor adventures and soaking in the island’s stunning landscapes under comfortable warmth.
October in Koolbaai, Sint Maarten, presents a moderately sunny outlook with a 56% chance of sunshine. This figure reflects a slight dip from the summer months, where sunlight was more prevalent, particularly in June at just 25%. Interestingly, as the year unfolds, the likelihood of sunny days generally stabilizes, with numbers climbing back to 67% in November. This trend indicates that while October may not boast the highest chances for sun, it still offers a fair opportunity for enjoyable weather as the island steps into the latter part of the year, making it a pleasant time for outdoor activities.
In Koolbaai, Sint Maarten, October marks a transition as daylight begins to wane, offering around 11 hours of sunlight. This follows a summer peak in June and July, when the days stretch to 13 hours, providing ample time for outdoor adventures and relaxation. As autumn settles in, daylight reduces to 12 hours in August and September, hinting at shorter days ahead. The consistent pattern continues into the colder months, where November and December also enjoy 11 hours of daylight. This rhythmic cycle of light not only enhances the island's natural beauty but also sets the stage for a vibrant mix of activities throughout the year.
As October settles in Koolbaai, Sint Maarten, the gentle embrace of the October wind offers a comforting atmosphere, with an average wind speed of 6.3 m/s (14 mph). While slightly lower than the vibrant breezes of summer— peaking in July at 8.5 m/s—October maintains a pleasant flow that enhances the island's idyllic charm. This month marks a transition, as the wind begins to taper off after the summer months, contrasting with September's calmer 5.3 m/s. As fall takes root, the wind carries whispers of change yet continues to invigorate the serene surroundings, inviting both residents and visitors alike to relish in the moderate yet refreshing air of Koolbaai.
Weather in Koolbaai varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Koolbaai, focusing on differences in temperature, rainfall, humidity, and UV levels.
October and January exhibit distinct weather patterns, with October generally being warmer and wetter than January. In October, temperatures range from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), averaging around 27°C (81°F). This month also sees significant rainfall, with a total precipitation of 113 mm (4.5 in) over 18 days, accompanied by 79% humidity. In contrast, January experiences milder temperatures with a minimum of 23°C (74°F) and a maximum of 27°C (81°F), averaging 25°C (78°F). Precipitation drops to 35 mm (1.4 in) across 14 days, with slightly lower humidity at 77%. For more detailed insights, check out Koolbaai weather in January.
When comparing the weather in October and February, October tends to be warmer and wetter. October boasts temperatures that range from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), with an average temperature of 27°C (81°F). It also experiences significant rainfall, with around 113 mm (4.5 inches) over 18 days and a humidity level of 79%. In contrast, February offers a slightly cooler climate, with temperatures ranging from 22°C (72°F) to 26°C (80°F), averaging 25°C (77°F). The month is drier, receiving only 35 mm (1.4 inches) of precipitation over 11 days and a slightly lower humidity at 77%. For more specific details on February weather, you can check Koolbaai weather in February.
October and March present notably different weather patterns. In October, temperatures range from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), with an average of 27°C (81°F). This month experiences significant rainfall, with 113 mm (4.5 in) spread over 18 days, resulting in a humidity level of 79%. In contrast, March boasts milder temperatures, with a minimum of 22°C (73°F) and a maximum of 26°C (79°F), averaging 25°C (77°F). Precipitation is minimal in March, totaling only 27 mm (1.1 in) across 10 rainy days, and humidity is slightly lower at 77%. For more detailed insights about the weather during this period, check out Koolbaai weather in March.
In comparing the weather between October and April, we observe that October tends to be warmer, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), while April has a slightly lower range, with an average of 23°C (74°F) to 27°C (81°F). Additionally, October experiences significantly more precipitation, totaling 113 mm (4.5 in) over 18 days, compared to April's 35 mm (1.4 in) over just 11 days. Despite the difference in rainfall, both months maintain high humidity levels, with October at 79% and April at 78%. For more detailed insights, check out Koolbaai weather in April.
When comparing the weather in October and May, it's evident that both months experience warm temperatures, but October tends to be slightly warmer overall. In October, temperatures range from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), with an average of 27°C (81°F). In contrast, May sees a slightly lower temperature range, with a minimum of 23°C (74°F) and a maximum of 28°C (82°F), averaging at 26°C (79°F).
Additionally, October is significantly wetter, receiving 113 mm (4.5 in) of precipitation over 18 days, compared to May's 49 mm (1.9 in) across just 11 days. Interestingly, both months share the same humidity level of 79%, making the air feel equally muggy. For a deeper look into the specifics of May weather, you can visit Koolbaai weather in May.
In comparing the weather between October and June, both months maintain similar average temperatures, with October ranging between 25°C (77°F) and 29°C (84°F), while June stays slightly cooler, topping out at 28°C (83°F). However, October experiences significantly higher precipitation, with 113 mm (4.5 in) over 18 days, compared to June's 50 mm (2.0 in) over 14 days. The humidity levels are fairly consistent, sitting at 79% in October and 81% in June, which contributes to a tropical feel in both months. Overall, October tends to be wetter and slightly warmer than June. For more detailed information on June weather, visit Koolbaai weather in June.
In comparing the weather between October and July, both months exhibit similar temperature ranges, with minimums at 25°C (77°F), averages at 27°C (81°F), and maximums at 29°C (84°F). However, October sees a higher precipitation total of 113 mm (4.5 in) over 18 days, compared to July's 83 mm (3.3 in) over just 17 days. Humidity levels also differ slightly, with October averaging 79% compared to July's higher humidity of 83%. For more details on July weather specifically, you can check out Koolbaai weather in July.
In comparing the weather patterns of October and August, we see that both months maintain similar temperature ranges, with minimum temperatures around 25°C (77°F) and maximum temperatures peaking at 29°C (84°F). However, October tends to be slightly cooler on average at 27°C (81°F), compared to August's average of 28°C (82°F). Precipitation is notably higher in October, with 113 mm (4.5 in) over 18 days, compared to August's 87 mm (3.4 in) over 16 days. Humidity levels also differ slightly, with October at 79% and August at 82%. For more specific details on August weather, you can visit Koolbaai weather in August.
In comparing the weather of October and September, we see some notable differences. October maintains a similar temperature range as September, with a minimum of 25°C (77°F) and a maximum of 29°C (84°F), but experiences a slight drop in average temperature to 27°C (81°F) from September's average of 28°C (82°F). Precipitation is also lower in October, with 113 mm (4.5 in) over 18 days, compared to September's 161 mm (6.3 in) over 22 days. Humidity remains relatively consistent, with October at 79% and September slightly higher at 80%. For a more detailed comparison, you can check out Koolbaai weather in September.
October and November exhibit similar temperature patterns, with October experiencing slightly higher maximum temperatures, averaging 29°C (84°F) compared to November's 28°C (83°F). Both months have a minimum temperature around 24-25°C (76-77°F) and an average of 27°C (80-81°F). However, October tends to be wetter, with 113 mm (4.5 in) of precipitation over 18 days, while November sees a decrease in rainfall to 96 mm (3.8 in) across 17 days. Humidity levels remain consistent at 79% for both months. For a detailed look at November weather, you can visit Koolbaai weather in November.
In October, the weather is warmer, with average temperatures reaching around 27°C (81°F) and a maximum of 29°C (84°F), accompanied by higher precipitation levels of 113 mm (4.5 in) over 18 days. The humidity remains relatively high at 79%. In contrast, December brings slightly cooler temperatures, averaging 26°C (79°F) with a maximum of 28°C (82°F), but significantly less rainfall at 48 mm (1.9 in) over 16 days and a similar humidity level of 78%. For more detailed information, you can check out Koolbaai weather in December.
As October unfolds in Koolbaai, the transition to the rainy season becomes evident, setting it apart from the drier summer months. The average temperature remains a comfortable 27°C, but the soaring humidity—hovering around 79%—creates a notable stickiness in the air. Frequent showers, with 18 days experiencing some precipitation, bring lushness to the landscape and provide essential moisture after the drier months. This increased rainfall contrasts sharply with the long, sunny days of the preceding summer, offering a refreshing change for visitors. For a deeper understanding of how October weather integrates into the overall climate of Koolbaai, check out the detailed insights at Koolbaai Climate.