Last updated: October 31, 2025
April in Koolbaai, Sint Maarten, offers a delightful tropical experience characterized by pleasant temperatures and moderate humidity. With daily maximums reaching 27°C (81°F) and an average of 25°C (78°F), the warmth invites outdoor activities and relaxation. Nights are cozy, dipping to a minimum of 23°C (74°F). While the month sees about 35 mm (1.4 in) of precipitation spread over 11 days, the lush surroundings thrive, enhancing the island's natural beauty. Humidity levels hover around 78%, creating a balmy atmosphere that is perfect for enjoying the sun-drenched beaches and vibrant local culture.
April in Koolbaai, Sint Maarten offers a delightful glimpse of the Caribbean's warm embrace as temperatures remain consistently inviting. With minimums around 23°C (74°F) and average highs peaking at 27°C (81°F), the climate is just right for beach lovers and outdoor adventurers alike. As spring settles in, April maintains the pleasant warmth seen in the preceding months, ensuring that daytime activities can thrive under the sun. Unlike the slightly cooler March temperatures, April subtly hints at the impending summer heat without overwhelming visitors, making it a perfect time to explore the island's vibrant culture and stunning landscapes, all while enjoying mild evenings that linger around 25°C (78°F).
April in Koolbaai, Sint Maarten, showcases a balanced precipitation pattern with 35 mm (1.4 in) of rain over 11 days, mirroring the amounts recorded in January and February. This month marks a transition as the island prepares for the wetter months ahead, with rainfall beginning to rise in May. Interestingly, the frequency of rainy days is relatively stable, holding steady at 11 days, hinting at a consistent, albeit light, drizzle that nourishes the lush landscape without overwhelming it. As the dry spell begins to wane, April serves as a gentle reminder of the bountiful showers to come, setting the stage for the lush tropical vibrancy of the summer months.
As April unfolds in Koolbaai, Sint Maarten, humidity rises slightly to 78%, marking the transition toward the more humid months ahead. This subtle increase follows a consistent trend observed since the start of the year, where January, February, and March each maintained a steady 77% humidity. The gradual upward trajectory continues into May, with humidity reaching 79%, hinting at the inevitable approach of summer. Overall, it’s clear that Koolbaai experiences a predictable rise in humidity as the year progresses, with April serving as a gentle precursor to the more humid conditions of late spring and summer.
In April, Koolbaai, Sint Maarten experiences an extreme UV Index of 13, which signifies a high risk of harm from unprotected sun exposure. With a burn time of just 10 minutes, it's essential for residents and visitors alike to take precautions, such as wearing sunscreen, protective clothing, and hats to shield themselves from the sun's intense rays. This trend of consistently high UV levels continues into May and June, maintaining the extreme category, while January and November provide a slight reprieve with a very high UV Index of 9. As summer approaches, the UV index peaks at 14 in September, underscoring the importance of sun safety throughout the year. For further details, check out the Koolbaai UV Index.
UV Risk Categories
April in Koolbaai, Sint Maarten, brings a splendid continuation of sunshine, with 349 hours of glorious sunlight illuminating the stunning landscape. Following the sunny peaks of March and May, which recorded 350 and 363 hours respectively, April maintains a vibrant glow that invites outdoor adventures and serene beach days. The overall trend shows a gradual escalation in sunshine hours as the year unfolds, peaking in late spring and early summer. This persistent sunshine not only boosts the island's charm but also sets the stage for delightful experiences under the warm, tropical sky. As spring blossoms into summer, Koolbaai remains an irresistible destination, basking in the embrace of abundant sunshine.
April in Koolbaai, Sint Maarten, marks a noticeable dip in sunny weather, with a 48% chance of sunshine, making it one of the cloudier months of the year. This decline follows a promising stretch in both January through March, where the likelihood of clear skies hovers at around 72%. Interestingly, as the island transitions into the warmer months, May sees a slight rebound to 60%, yet overall, the pattern suggests that April may come with more overcast days. As summer approaches, the chances of sunshine further fluctuate, dipping to 25% in June. Visitors planning their trips should keep in mind this trend, as April's weather can be a mixture of pleasant sun interspersed with clouds, inviting anyone ready for an adventure in the tropical charm of Sint Maarten.
In Koolbaai, Sint Maarten, the arrival of April marks a delightful transition in daylight duration, with residents basking in approximately 12 hours of sunlight each day. This pattern reflects a steady increase from the previous months, where January and February offered only 11 hours of daylight. As spring settles in, April holds onto these generous hours before the summer months unleash even more sunshine, peaking at 13 hours in June and July. Notably, this balance of warmth and light fosters an inviting atmosphere that is characteristic of the Caribbean, allowing both locals and visitors to revel in the natural beauty of the island as they prepare for the vibrant summer ahead.
As April settles in Koolbaai, Sint Maarten, the gentle breeze often invites locals and visitors alike to enjoy the outdoors. With an average wind speed of 6.4 m/s (14 mph), April experiences a slight dip in wind intensity compared to the brisk gusts of February, which peaked at 9.0 m/s (20 mph). This month typically ushers in a softer, more refreshing atmosphere, creating a tranquil environment ideal for leisurely activities by the sea. Following the gentle winds of April, summer months see an increase, with July reaching an average of 8.5 m/s (19 mph). This trend indicates a gradual build-up of breezy conditions leading into the vibrant summer season, fostering an enjoyable balance of warmth and wind in this Caribbean paradise.
Weather in Koolbaai varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Koolbaai, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather patterns of April and January, we find that both months share similar temperature ranges, with minimums at 23°C (74°F), averages at 25°C (78°F), and maximums at 27°C (81°F). However, January experiences slightly more precipitation, totaling 35 mm (1.4 in) over 14 days, compared to April's 35 mm (1.4 in) over 11 days. Humidity levels are also quite comparable, with January at 77% and April slightly higher at 78%. For a detailed look at January's weather, visit Koolbaai weather in January.
April and February showcase similar weather patterns, with both months experiencing mild temperatures and comparable precipitation levels. April has a minimum temperature of 23°C (74°F) and a maximum of 27°C (81°F), while February is slightly cooler, with a minimum of 22°C (72°F) and a maximum of 26°C (80°F). Despite these minor differences, both months receive around 35 mm (1.4 in) of precipitation over the same number of days—11 days—in total. The humidity in April is slightly higher at 78% compared to February's 77%, contributing to a warm and tropical feel during both months. For more detailed insights on February's weather, you can visit Koolbaai weather in February.
Comparing the weather in April and March reveals some subtle differences. In April, the minimum temperature is slightly higher at 23°C (74°F), while March has a minimum of 22°C (73°F). Both months share the same average temperature of 25°C (77°F), but April sees a higher maximum at 27°C (81°F) compared to March’s 26°C (79°F). Precipitation in April increases to 35 mm (1.4 in) and occurs over 11 days, while March has slightly less rainfall at 27 mm (1.1 in) over 10 days, indicating a wetter trend in April. Humidity levels are comparable, with April at 78% and March at 77%. For more details on March weather, you can check Koolbaai weather in March.
In April, temperatures typically 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). The month sees about 35 mm (1.4 in) of precipitation over 11 days, along with a humidity level of 78%. In comparison, May experiences slightly warmer weather, with average temperatures rising to 26°C (79°F), peaking at 28°C (82°F). However, it also receives more rainfall, totaling 49 mm (1.9 in) over the same number of days, and humidity increases marginally to 79%. For more details on weather conditions, you can check Koolbaai weather in May.
In comparing the weather between April and June, we see a gradual warming trend. April features temperatures ranging from a minimum of 23°C (74°F) to a maximum of 27°C (81°F), with an average of 25°C (78°F). The month experiences 35 mm (1.4 in) of precipitation over 11 days, accompanied by a humidity of 78%. In contrast, June offers 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). This month sees increased precipitation of 50 mm (2.0 in) across 14 days and a marginally higher humidity level of 81%. For more detailed insights into June's weather, check out Koolbaai weather in June.
April and July exhibit notable differences in weather patterns. In April, temperatures range from a pleasant minimum of 23°C (74°F) to a maximum of 27°C (81°F), with an average temperature of 25°C (78°F). The month sees around 35 mm (1.4 in) of precipitation over 11 days, alongside a humidity level of 78%. In contrast, July experiences higher temperatures, with a minimum of 25°C (77°F) and a maximum reaching 29°C (84°F), averaging 27°C (81°F). Rainfall increases significantly to 83 mm (3.3 in) across 17 days, and humidity creeps up to 83%. For a detailed look at July's weather, you can visit Koolbaai weather in July.
April and August present distinct weather patterns, with April generally being milder and less humid compared to August. In April, temperatures range from a minimum of 23°C (74°F) to a maximum of 27°C (81°F), while August sees slightly warmer temperatures, with lows of 25°C (78°F) and highs reaching 29°C (84°F). Precipitation also varies significantly; April experiences 35 mm (1.4 in) over 11 days, whereas August has higher rainfall, totaling 87 mm (3.4 in) across 16 days. Humidity levels are also higher in August, averaging 82% compared to April's 78%. For more detailed insights on August weather, you can refer to Koolbaai weather in August.
April and September exhibit notable differences in weather characteristics. In April, temperatures are slightly cooler, with a minimum of 23°C (74°F) and an average of 25°C (78°F), accompanied by relatively low precipitation of 35 mm (1.4 in) over 11 days. The humidity is also moderate at 78%. In contrast, September experiences warmer conditions with a minimum temperature of 25°C (77°F) and an average of 28°C (82°F) that peaks at 29°C (85°F). However, it also sees significantly higher rainfall, totaling 161 mm (6.3 in) over 22 days, leading to a slightly higher humidity level of 80%. For more detailed information, you can explore the weather specifics at Koolbaai weather in September.
In comparing the weather between April and October, we see a noticeable increase in temperatures and precipitation. In April, temperatures range from a minimum of 23°C (74°F) to a maximum of 27°C (81°F), with an average of about 25°C (78°F). Precipitation is relatively low at 35 mm (1.4 in), spread over 11 days, and humidity levels hover around 78%.
Conversely, October experiences higher temperatures, with a minimum of 25°C (77°F) and an average of 27°C (81°F), peaking at 29°C (84°F). However, it is also significantly wetter, with precipitation totaling 113 mm (4.5 in) over 18 days, maintaining a similar humidity level at 79%. For more specific insights into this month, you can check out Koolbaai weather in October.
April and November offer warm temperatures, but there are notable differences in their weather patterns. In April, the average temperature ranges from a minimum of 23°C (74°F) to a maximum of 27°C (81°F), with a total precipitation of 35 mm (1.4 in) spread over 11 days and a humidity level of 78%. In contrast, November sees slightly higher averages, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 28°C (83°F). However, November experiences significantly more rainfall, with a total of 96 mm (3.8 in) over 17 days and a humidity level that remains quite similar at 79%. For more details about the specific weather conditions in November, you can check Koolbaai weather in November.
April and December both feature warm temperatures, with April experiencing a minimum of 23°C (74°F) and a maximum of 27°C (81°F), while December's temperatures range from a minimum of 24°C (75°F) to a maximum of 28°C (82°F). Overall, December is slightly warmer than April, with average temperatures of 26°C (79°F) compared to April's 25°C (78°F). However, December tends to be wetter, with 48 mm (1.9 in) of precipitation over 16 days, compared to April's 35 mm (1.4 in) over 11 days. Both months maintain a consistent humidity level of 78%. For more detailed insights, check out Koolbaai weather in December.
In April, Koolbaai experiences a delightful transition towards warmer weather, making it a popular time for visitors. With average temperatures settling around 25°C (78°F), the days are pleasantly warm, but not overly hot, in contrast to the rising heat of the summer months. While humidity remains relatively high at 78%, the 35 mm of precipitation over 11 days provides a refreshing respite, maintaining the lush landscapes and vibrant flora. This balance of warmth and brief showers creates an ideal environment for outdoor activities while still enjoying the beautiful Caribbean charm. For more insights into how April weather compares with the rest of the year, check out Koolbaai Climate.