Last updated: July 31, 2025
Aruba boasts a tropical maritime climate characterized by warm temperatures and distinct seasonal variations in precipitation. The island's maximum temperatures peak at around 30°C (86°F) in September, while the average annual temperature rests comfortably at 27°C (81°F). Cooler months are noted in February, when temperatures can dip to a minimum of 23°C (74°F). Rainfall is generally modest, totaling 517 mm (20.3 inches) annually, with the wettest months being October and November, each experiencing an increase in precipitation days to 19 and 22, respectively. Humidity levels tend to be highest in June at 85%, while January ushers in the lowest average at 80%, offering a comfortable climate for both relaxation and exploration.
Aruba is characterized by a BSh climate, also known as a semi-arid climate. This means the island enjoys warm temperatures year-round, with average highs around 82°F (28°C). While rainfall is generally scarce, with an annual average of just over 20 inches, the sunny days make it ideal for outdoor activities and beach lounging. The trade winds bring a refreshing breeze, creating a comfortable atmosphere even during the hottest months. Visitors can expect delightful weather, perfect for exploring Aruba's stunning landscapes and vibrant culture.
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Aruba basks in warm tropical temperatures year-round, making it an ideal escape for sun-seekers. In January and February, the island enjoys a delightful range, with average temperatures hovering around 26°C (79°F), gradually warming to 27°C (81°F) through March and April. As May arrives, so does a subtle rise, culminating in 28°C (82°F) by late spring. The summer months, particularly July and August, showcase peak warmth, with temperatures soaring to 30°C (86°F), while the evenings remain comfortably in the mid-25°C (78°F) range. As autumn sets in, temperatures slightly cool but still range from 27°C (81°F) to 29°C (84°F) in the later months, ensuring that Aruba's allure remains strong throughout the year. With such consistent warmth, every month offers a perfect backdrop for enjoying the island's stunning beaches and vibrant culture.
Aruba experiences a distinct variation in precipitation patterns throughout the year, with the most significant rainfall occurring in the latter months. Starting with January, the island receives about 35 mm (1.4 in) over 11 days, gradually decreasing to a low of 15 mm (0.6 in) in April, marking the driest month. As summer approaches, there’s a slight uptick in precipitation, with August and September seeing 36 mm (1.4 in) and 51 mm (2.0 in) respectively. However, it’s October and November that really stand out, bringing the highest amounts of rain at 111 mm (4.4 in) and 109 mm (4.3 in), coupled with an increase in rainfall days to 19 and 22. By December, while the total drops to 53 mm (2.1 in), the trend clearly reveals a shift from the dry months to a wetter season, highlighting the seasonality of Aruba’s climate.
Aruba’s humidity exhibits a clear upward trend as the year progresses, with January starting at a comfortable 80% and gradually climbing to a peak of 85% in both June and July. The summer months bring the highest moisture levels, making it feel warm and tropical. However, as August rolls in, there’s a slight dip to 83%, followed by a gentle decline through the autumn months, stabilizing around 81% in October and November. The year closes with December at 81%, reflecting a consistent humidity that characterizes Aruba’s alluring climate. This blend of steamy summers and relatively stable winters creates a unique atmosphere that draws visitors year-round.
Aruba's UV Index presents a striking pattern of extreme sun exposure throughout the year, with values consistently hovering between 11 and 14 from January to April. March stands out with a peak UV Index of 14, indicating very high potential for skin damage with a remarkably brief burn time of just 10 minutes. As the year progresses, the UV Index stabilizes at 13 from May to September before declining slightly to 12 in October and 11 in November. By December, the Index reduces to 10, transitioning to a very high exposure category with a slightly longer burn time of 15 minutes. This trend underscores the importance of sun protection in Aruba year-round, ensuring that visitors are aware of the intense UV levels and plan accordingly.
UV Risk Categories
Aruba basks in generous sunshine throughout the year, with January kicking off the trend at 269 hours. As winter fades, the island welcomes increasing daylight, peaking in July with an impressive 364 hours of sun. The summer months of July and August shine particularly bright, offering nearly high-season radiance. Even as the calendar transitions toward autumn, September and October maintain robust sunshine, each still delivering over 300 hours. The year wraps up with a delightful encore of brightness in December, settling at 329 hours. This consistent abundance of sunlight not only makes Aruba a perennial paradise but also a compelling destination for sun-seekers year-round.
In Aruba, the likelihood of sunny weather showcases an intriguing seasonal pattern. February emerges as the standout month with a remarkable 78% chance of sunshine, making it an ideal time for beach lovers. The sun begins to retreat slightly as spring approaches, with March and April showing 41% and 27% chances respectively. As the island transitions into the hotter months, the probability remains relatively low throughout May to July, fluctuating between 27% to 53%. Interestingly, September and November bounce back with chances of 51% and 49%, before rounding out the year with December's favorable 52%. This suggests that while Aruba offers ample sunny days, the mid-year months may present a quieter window for sun seekers.
In Aruba, the rhythm of daylight hours offers a gentle cadence throughout the year. Starting with 11 hours of daylight in January and February, the days gradually stretch as the island welcomes the arrival of spring. By March, the daylight increases to 12 hours, a trend that continues through the summer months of April to August, providing ample sunlight for beach adventures and explorations. As autumn approaches, the days begin to shorten again, signaling a return to 11 hours in October and December. This consistent pattern not only highlights Aruba's beautiful tropical climate but also ensures that visitors can enjoy plenty of sunshine year-round.
Aruba’s climate presents a delightful, tropical experience year-round, characterized by warm temperatures and varying humidity levels. Throughout the year, the average temperature consistently hovers around 26°C (79°F), with peaks hitting 30°C (86°F) during the summer months of August and September. As the humidity climbs steadily to 85% in the hotter months, visitors can expect a balmy, inviting atmosphere perfect for beach outings. Precipitation is at its lowest from April to June, with only a few rainy days, while late summer and early fall see an uptick in showers, particularly in October and November. Despite these fluctuations, Aruba's climate remains largely sunny and inviting, making it an ideal escape for sun-seekers looking for a slice of paradise amidst the changing seasons.