Last updated: October 31, 2025
January in Koolbaai, Sint Maarten offers a delightful tropical escape with average temperatures hovering around 25°C (78°F), making it the ideal time for sun-seekers. Daily maximums often reach 27°C (81°F), while nights can be pleasantly cool at a minimum of 23°C (74°F). Visitors should be prepared for a touch of rain, as 14 days may see precipitation totaling 35 mm (1.4 in), complemented by a humidity level of 77%. Despite the occasional shower, January remains an enchanting month to experience the beauty of this Caribbean paradise.
In January, Koolbaai, Sint Maarten, experiences pleasant temperatures that set the tone for the year, with minimums around 23°C (74°F), an average of 25°C (78°F), and maximums reaching 27°C (81°F). This mild warmth continues into February and March, where the temperatures remain steady, hinting at the island's tropical climate. As spring approaches in April, the thermometers maintain similar readings, reinforcing the island's charm. Transitioning into the warmer months, temperatures gradually rise in May, reaching 28°C (82°F) by mid-summer, while still retaining a comfortable range. From June to September, Koolbaai sees consistent warm weather with maximums frequently peaking at 29°C (84°F), making it an ideal escape for sun-seekers. As the year draws to a close, October through December brings a slight dip, yet the climate remains inviting, with averages hovering around 27°C (81°F), ensuring that the allure of Koolbaai endures throughout the year.
January in Koolbaai, Sint Maarten, greets residents and visitors with an average precipitation of 35 mm (1.4 in), spread over 14 days of the month. This consistent rainfall is representative of the island's transitional climate, hinting at the wetter months to come. Interestingly, January's precipitation aligns with February's, illustrating a pattern of steady moisture at the start of the year. As winter fades into spring, rainfall begins to gradually decrease, leading to drier months ahead. The subsequent shift in the climatic trend becomes more pronounced as the rains intensify by mid-year, reaching a peak in September. This cyclical pattern of precipitation embodies the tropical essence of Koolbaai, creating a lush landscape that is both vibrant and inviting for those looking to experience island life.
In Koolbaai, Sint Maarten, January brings a comfortable 77% humidity, mirroring the levels found in February and March. This consistency is notable, as the region gradually experiences a slight increase as spring approaches, reaching 78% by April. As summer unfolds, humidity levels rise steadily, peaking at 83% in July and slightly easing back to 82% in August. The trend suggests a warm and humid climate through much of the year, with humidity slowly tapering off to 79% in October and November, before settling at 78% in December. This pattern of humidity reflects the tropical charm of Koolbaai, making it a warm and inviting destination for visitors throughout the winter months.
In Koolbaai, Sint Maarten, January boasts a UV Index of 9, categorizing it as very high with a burn time of just 15 minutes. This sets the stage for a gradual but notable increase in UV intensity as the months progress, culminating in March through August where the index reaches a peak of 13, marked as extreme with a consistent burn time of only 10 minutes. A slight uptick is observed in September with an index of 14, before dropping back to 9 in November and December, indicating a seasonal fluctuation in UV exposure. With these trends in mind, it is crucial for sun-seekers to stay informed and protected. For more details, check out the Koolbaai UV Index.
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In Koolbaai, Sint Maarten, January welcomes visitors with an impressive 259 hours of sunshine, setting the stage for a delightful winter escape. As the months progress, the island basks in an increasing embrace of sunlight, with February showcasing 299 hours and March peaking at 350 hours. The warmth continues through April and May, reaching an exhilarating 363 hours—the sun's generous rays invite adventure and relaxation alike. The summer months maintain the trend, with July and August recording 362 and 351 hours, respectively, ensuring that beachgoers can soak in the sun well into the height of the season. Even as the year nears its end, September through November hold steady with sunshine totals between 308 and 322 hours, offering a bright finale to the year. This delightful progression of sunny days makes Koolbaai a year-round paradise for sunseekers!
In January, Koolbaai, Sint Maarten enjoys a 57% chance of sunny weather, making it a delightful start to the year. This month sets the stage for sunnier times ahead, as February and March boast an impressive 72% likelihood of sunshine, representing the peak brightness of the winter months. Following this, the chances dip slightly in April to 48% before rebounding in May with a 60% forecast. Subsequent months, however, show more fluctuation, with June experiencing a significant drop to 25%. As summer progresses, the chances of sun oscillate, with July and August showing variability at 50% and 46% respectively, before a slight increase returns in the fall. Overall, while January offers a solid start, the trends suggest that early in the year is generally the best time for those seeking sunny days in Koolbaai.
In Koolbaai, Sint Maarten, January ushers in 11 hours of daylight, a trend that continues into February, providing a consistent start to the year. As spring approaches in March, the days stretch to 12 hours, signaling the onset of longer daylight periods that persist through May. This pattern peaks in June and July, when daylight reaches a warm and vibrant 13 hours, perfect for enjoying the island's stunning beaches and outdoor activities. As summer wanes into August and September, daylight gradually tapers back to 12 hours, before settling at 11 hours again from October through December. This cycle of daylight not only highlights the gradual shift of seasons but also enhances the natural beauty of Koolbaai throughout the year.
In Koolbaai, Sint Maarten, January ushers in a gentle average wind speed of 6.9 m/s (15 mph), marking the start of the year with a refreshing breeze. While January's winds are relatively calm compared to the brisk gusts of February, which peak at 9.0 m/s (20 mph), they still provide a pleasant atmosphere for both locals and visitors alike. As the month progresses into spring, the winds maintain a moderate character, typically ranging between 6.4 m/s (14 mph) in April and 7.4 m/s (16 mph) by March. This unique pattern of soothing but invigorating winds establishes January as a transitional month, setting the stage for the increasingly spirited breezes that sweep in during the summer. Overall, the January winds in Koolbaai create an inviting environment perfect for outdoor activities, making it a delightful time to experience the natural beauty of this Caribbean gem.
Weather in Koolbaai varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Koolbaai, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between January and February, both months experience similar temperatures, with January showing a slight increase in maximum temperatures at 27°C (81°F) compared to February's 26°C (80°F). The average temperature remains consistent at around 25°C (77°F) for both months. Precipitation levels are the same, with each month receiving 35 mm (1.4 in), but February tends to have slightly fewer rainy days, averaging just 11 days compared to January's 14. Humidity levels are also unchanged at 77%, providing a consistently tropical atmosphere. For more detailed insights, you can check Koolbaai weather in February.
In January, the weather features a slightly warmer temperature range with a minimum of 23°C (74°F) and a maximum of 27°C (81°F), while March brings slightly cooler temperatures, peaking at 26°C (79°F). Both months maintain an average temperature of around 25°C (77°F) and consistent humidity levels of 77%. However, January experiences more precipitation, totaling 35 mm (1.4 in) over 14 days, compared to March's 27 mm (1.1 in) over just 10 days. For more detailed insights into March's weather patterns, you can visit Koolbaai weather in March.
In both January and April, the weather displays remarkable consistency, with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 27°C (81°F), and an average temperature of 25°C (78°F). Precipitation levels are similar, with both months receiving around 35 mm (1.4 in), although January experiences rain on 14 days compared to April's 11 days. Humidity is slightly higher in April at 78%, compared to January's 77%. For more detailed information on April weather, you can visit Koolbaai weather in April.
In January, the weather in Koolbaai features warm temperatures with a minimum of 23°C (74°F), an average of 25°C (78°F), and a maximum of 27°C (81°F). This month experiences about 35 mm (1.4 in) of precipitation over 14 days, with an average humidity of 77%.
In contrast, May sees a slight increase in both temperature and precipitation. The minimum temperature remains the same at 23°C (74°F), but the average rises to 26°C (79°F), and the maximum reaches 28°C (82°F). Precipitation in May is higher at 49 mm (1.9 in) over 11 days, accompanied by a marginal increase in humidity to 79%.
For more details on May's weather, you can check out Koolbaai weather in May.
In January, the weather features a minimum temperature of 23°C (74°F) and averages around 25°C (78°F), with a maximum of 27°C (81°F). The month sees 35 mm (1.4 in) of precipitation over 14 days, accompanied by humidity levels of 77%. In contrast, June brings slightly warmer temperatures, with a minimum of 25°C (76°F), an average of 27°C (81°F), and a maximum of 28°C (83°F). Precipitation increases to 50 mm (2.0 in) over the same number of rainy days, and humidity rises to 81%. For a detailed look at June’s conditions, check out Koolbaai weather in June.
In January, the weather is pleasantly warm with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 27°C (81°F). This month sees about 35 mm (1.4 in) of precipitation over approximately 14 days, with humidity levels around 77%. Conversely, July experiences slightly higher temperatures, with a minimum of 25°C (77°F) and a maximum of 29°C (84°F), along with increased rainfall totaling 83 mm (3.3 in) over 17 days. The humidity also rises to 83%, making July feel more tropical. For more detailed insights on weather patterns, you can check Koolbaai weather in July.
In January, the weather is slightly cooler, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 27°C (81°F), accompanied by moderate humidity levels at 77%. Precipitation is relatively low, totaling 35 mm (1.4 in) over about 14 days. In contrast, August brings warmer conditions, with temperatures averaging from a minimum of 25°C (78°F) to a maximum of 29°C (84°F), and higher humidity at 82%. Rainfall also increases significantly in August, reaching 87 mm (3.4 in) across 16 days. For more detailed insights, you can visit Koolbaai weather in August.
January and September exhibit notable differences in weather patterns. In January, temperatures range from a minimum of 23°C (74°F) to a maximum of 27°C (81°F), with an average of 25°C (78°F). Precipitation is relatively low at 35 mm (1.4 in) over 14 days, and humidity hovers around 77%. Conversely, September experiences warmer temperatures, with a minimum of 25°C (77°F) and a maximum of 29°C (85°F), averaging 28°C (82°F). However, it is also much wetter, with 161 mm (6.3 in) of rain spread across 22 days and a humidity level of 80%. For more detailed information, you can check Koolbaai weather in September.
In January, the weather tends to be slightly cooler, with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 27°C (81°F) and an average of 25°C (78°F). The month experiences about 35 mm (1.4 in) of precipitation over 14 days, with humidity levels at 77%. In contrast, October sees warmer temperatures, with minimums of 25°C (77°F), averages of 27°C (81°F), and maximums reaching 29°C (84°F). This month is also significantly rainier, with 113 mm (4.5 in) of precipitation over 18 days and humidity slightly higher at 79%. For more detailed information, check out Koolbaai weather in October.
In January, the weather features a slightly cooler temperature range with minimums around 23°C (74°F) and maximums reaching 27°C (81°F), averaging 25°C (78°F). The month experiences moderate rainfall with 35 mm (1.4 in) of precipitation spread over 14 days, accompanied by a humidity level of 77%. In contrast, November is warmer, with minimum temperatures of 24°C (76°F) and maximums of 28°C (83°F), averaging 27°C (80°F). This month has significantly higher rainfall, totaling 96 mm (3.8 in) over 17 days, and a humidity level of 79%. For a more in-depth look at the weather conditions during this month, check out Koolbaai weather in November.
In comparison to December, January experiences slightly lower temperatures, with a minimum of 23°C (74°F) and an average of 25°C (78°F), while December sees a minimum of 24°C (75°F) and an average of 26°C (79°F). Additionally, January has less precipitation at 35 mm (1.4 in) over 14 days, compared to December's 48 mm (1.9 in) over 16 days. Humidity levels remain quite similar, with January at 77% and December at 78%. For more details, you can check out Koolbaai weather in December.
In January, Koolbaai experiences a delightful balance of warm days and cooler nights, with temperatures generally more moderate compared to the hotter summer months. Despite being one of the wetter months, with noticeable precipitation, the humidity remains relatively high, adding a tropical touch to the island's atmosphere. This makes January an ideal time for visitors seeking to enjoy the mild weather while exploring the stunning landscapes and vibrant culture that Koolbaai has to offer. For a more detailed look at the weather patterns throughout the year, please visit Koolbaai Climate.