Last updated: January 18, 2025
Humacao, Puerto Rico, is characterized by a tropical savanna climate according to the Köppen-Geiger classification (Am). This region experiences relatively stable temperatures throughout the year, with a minimum average of 21°C (70°F) in February and soaring to a maximum of 31°C (88°F) in September. The overall annual average temperature stands at a comfortable 26°C (79°F), making Humacao an inviting destination for those seeking warmth and vibrant natural surroundings.
In Humacao, Puerto Rico, temperature patterns exhibit a warm tropical climate with distinct seasonal trends. The year begins with mild conditions in January and February, where minimum temperatures hover around 21°C (70°F), gradually rising into the mid-20s °C. As spring progresses into April and May, the temperatures steadily increase, peaking with maximums reaching 29°C (84°F) in April and 29°C (85°F) in May. The summer months, particularly June through September, bring consistently warmer weather, with maximum temperatures often hitting 30°C (87°F) to 31°C (88°F). Notably, September stands out as the hottest month. As the year winds down in October and November, temperatures slightly cool, yet remain comfortable, with averages around 26°C (80°F). Overall, Humacao maintains a warm climate year-round, making it an ideal location for those seeking sunny weather.
In the coastal region of Humacao, Puerto Rico, the temperatures are consistent, with a minimum of 21°C (70°F) in February and reaching a maximum of 31°C (88°F) in September. This pattern is mirrored in both Anton Ruiz and Punta Santiago, which experience the same temperature range throughout the year. For more detailed information, you can explore the monthly temperatures in Anton Ruiz here, in Punta Santiago here, and in Humacao here.
Precipitation patterns in Humacao, Puerto Rico, reveal a distinct wet season that spans from late spring through fall. Beginning with relatively light rain, January and February see average precipitation of 56 mm (2.2 in) and 60 mm (2.3 in), respectively. As spring advances, March and April experience a slight increase, each receiving 77 mm (3.0 in) of rainfall. However, it is during May and June that the area's precipitation begins to climb significantly, with averages reaching 107 mm (4.2 in) and 108 mm (4.3 in), signaling the onset of the wetter summer months.
The peak of the rainy season occurs from July through September, where monthly precipitation soars to approximately 148 mm (5.8 in) in July, 152 mm (6.0 in) in August, and a notable 195 mm (7.7 in) in September. This period also corresponds with the highest number of rainy days, averaging 27 days in both July and August, and 28 days in September. As fall transitions into winter, precipitation lessens with 185 mm (7.3 in) recorded in October, tapering off to 80 mm (3.1 in) by December, but still providing ample rainfall throughout the year, contributing to the region's lush and vibrant landscape.
In Humacao, Puerto Rico, sunshine duration displays a clear seasonal pattern characterized by a notable rise from winter into summer. The year commences with 258 hours of sunshine in January, gradually increasing to 302 hours in February. As spring approaches, there is a marked escalation, reaching 348 hours in both March and April, culminating in the sunniest month of May, with an impressive 357 hours of sunlight. This steady trend reflects the region's transition to its warmer months, where longer days facilitate abundant sunshine.
The summer months maintain high sunshine levels, peaking at 355 hours in July before tapering slightly to 344 hours in June and 349 hours in August. Following the summer peak, sunshine hours begin to decrease into the fall, with September showcasing 318 hours, and a further decline to 316 hours in October. By November, sunshine returns to 302 hours, maintaining a relatively bright but shorter day length as the year closes, with December providing a warm 320 hours of sunlight. Overall, the seasonal sunshine distribution underscores the appeal of Humacao’s climate, especially in the spring and summer months, making it an attractive destination for sun-seekers.
The UV Index in Humacao, Puerto Rico, presents notable variations throughout the year, highlighting the need for sun safety awareness. Starting with January, the UV Index registers at 9, categorized as very high, allowing for a burn time of only 15 minutes. However, as winter transitions into spring, the index escalates significantly, reaching 11 in February and peaking at 13 from March through June. This higher UV exposure underscores the importance of adopting effective sun protection measures during these months, as the burn time reduces to merely 10 minutes under extreme conditions.
As summer approaches, the UV Index remains elevated, peaking at 14 in September, the highest recorded throughout the year, with a sustained burn time of 10 minutes. As the year comes to a close, the index drops back to 9 in November and December, indicating very high exposure levels once again. This seasonal fluctuation emphasizes that residents and visitors in Humacao should remain vigilant, particularly in spring and summer, when the risk of skin damage is markedly increased. Adhering to sun safety practices, including using sunscreen and protective clothing, is essential to enjoy the region's outdoor beauty while minimizing the risks associated with UV exposure.
UV Risk Categories
In Humacao, Puerto Rico, daylight duration exhibits a rhythmic pattern that aligns closely with the changing seasons. The year begins with consistent 11 hours of daylight in both January and February. As spring approaches, daylight hours gradually increase, reaching 12 hours in March and persisting at this level through April and May. This gradual lengthening of daylight sets the stage for the summer months, where June and July stand out with 13 hours of daylight, providing ample opportunity for outdoor activities and enjoying the vibrant natural scenery.
As summer transitions to fall, daylight hours begin to recede once more, reverting to 12 hours in August and September. This decline continues through October and November, when daylight returns to 11 hours. Notably, December also sees 11 hours of daylight, maintaining a sense of balance as the year concludes. Throughout the year, the consistent daylight duration enhances the appeal of Humacao as a destination for sun lovers, showcasing the region's beautiful landscapes under a warm tropical sun.
The climate in Anton Ruiz, Puerto Rico is characterized by warm temperatures year-round, with average monthly highs ranging from 24°C (75°F) in January to 30°C (88°F) in September. Rainfall is most abundant from May to October, peaking at 195 mm (7.7 in) in September, while the rest of the year sees moderate precipitation. Sunshine is plentiful, with May typically enjoying the most hours at 357, providing ample bright days. Overall, this tropical environment is attractive for those who enjoy warmth and natural beauty. For more detailed insights, visit Anton Ruiz climate.
The climate in Bajandas, Puerto Rico, is characterized by warm temperatures year-round, with January to March averaging around 25°C (77°F) and increasing to about 27°C (81°F) from May to October. Precipitation peaks in September, reaching up to 195 mm (7.7 in), while the driest months are January and February with 57 mm (2.3 in) and 61 mm (2.4 in) respectively. Sunny days are abundant, particularly from March to May, where sunshine hours average over 350 hours. For more details on the climate in this region, visit Bajandas climate.
Candelero Arriba, Puerto Rico enjoys a tropical climate characterized by warm temperatures throughout the year, with average highs ranging from 25°C (77°F) in winter to 27-30°C (81-86°F) in summer. The wettest months are from May to October, peaking in September with 195 mm (7.7 in) of rainfall, while the driest months are January and December with 52 mm (2.0 in) and 75 mm (2.9 in) respectively. Sunshine is abundant, especially in May with 359 hours, contributing to a vibrant atmosphere. For more detailed information, visit the Candelero Arriba climate.
Humacao, Puerto Rico, experiences a tropical climate with warm temperatures year-round, averaging between 25°C (77°F) and 27°C (81°F). The warmest months are typically June to September, where highs can reach up to 31°C (88°F). Rainfall peaks in September with approximately 195 mm (7.7 in), while May and June also see significant precipitation. Sunlight is abundant, particularly from March to May, averaging over 350 hours of sunshine. For more detailed information, visit Humacao climate.
Punta Santiago, Puerto Rico, enjoys a warm tropical climate with average temperatures ranging from 25°C (77°F) in January to 27°C (81°F) in October. The region experiences significant rainfall, especially during the summer months, with September receiving the highest average of 195 mm (7.7 in). Sunshine is abundant year-round, peaking in May with 357 hours of sun, promoting outdoor activities. For a detailed overview of weather patterns, visit Punta Santiago climate.
In conclusion, Humacao, Puerto Rico, is characterized by its warm tropical climate, abundant sunshine, and significant UV exposure throughout the year. The monthly variations in temperature, precipitation, sunshine duration, and UV Index highlight the region's inviting, yet sometimes intense, environmental conditions. As visitors and residents navigate these seasonal changes, understanding the implications of UV exposure and the benefits of ample daylight becomes essential for maximizing outdoor enjoyment while prioritizing health and safety. With consistent warmth and vibrant natural beauty, Humacao remains an attractive destination for those seeking a sun-soaked escape and an enriching tropical experience.