Last updated: January 18, 2025
Isabela, Puerto Rico, is characterized by a tropical Am (monsoon) climate, offering residents and visitors alike a consistently warm environment year-round. The minimum temperature hovers around 20°C (69°F) in January, providing a mild winter respite. As the seasons transition, the average temperature rises to a comfortable 26°C (79°F), making it ideal for outdoor activities. However, the warmth peaks during the summer, with maximum temperatures reaching 32°C (89°F) in August, illustrating the region's vibrant and inviting tropical atmosphere. Overall, Isabela's climate is a noteworthy aspect of its charm, influencing both the local ecosystem and lifestyle.
Temperature patterns in Isabela, Puerto Rico, reveal a warm tropical climate with subtle seasonal variations. January starts with cooler temperatures, featuring a minimum of 20°C (69°F) and an average of 25°C (77°F). As winter transitions into spring, February and March experience slightly elevated minimum temperatures, ranging from 21°C (69°F) to 21°C (70°F). By May, temperatures begin to rise more significantly, reaching averages of 26°C (79°F) and a maximum of 31°C (88°F), indicating the approach of summer. The warmest months—July and August—see minimum and average readings remain consistent at around 24°C (76°F) and 27°C (81°F), while maximum temperatures peak at 32°C (89°F). As summer fades into autumn, temperatures gradually cool, but the region retains mild conditions, with averages around 27°C (81°F) through October, showcasing its tropical charm throughout the year.
Isabela, Puerto Rico, experiences a distinct precipitation pattern throughout the year, characterized by a marked increase in rainfall from late spring into autumn. January starts off relatively dry, with only 34 mm (1.3 in) of rain, but this amount slightly rises in February to 39 mm (1.5 in). The onset of spring brings a noticeable uptick in rainfall, reaching 72 mm (2.8 in) in March, while April sees 66 mm (2.6 in). The rainiest months, however, are May and June, with precipitation peaking at 97 mm (3.8 in) and 85 mm (3.3 in), respectively.
As summer transitions into fall, Isabela encounters its highest rainfall levels, particularly in September, which records an impressive 188 mm (7.4 in) over 23 rainy days. October follows closely behind with 127 mm (5.0 in). Despite the significant rainfall, the number of rain days remains relatively consistent, with August bringing 20 days of precipitation. November and December gradually see a decline in precipitation levels, with 99 mm (3.9 in) and 43 mm (1.7 in), respectively, signaling the end of the wet season and a return to drier conditions as the year concludes.
Isabela, Puerto Rico, enjoys a vibrant sunshine duration throughout the year, showcasing a clear seasonal trend characterized by increasing hours of sunlight from winter to summer. The year begins with 261 hours of sunshine in January, gradually building to 307 hours in February. This upward trajectory continues into spring, with March and April seeing further increases, peaking at 352 hours in both April and June. May marks a noteworthy highlight, offering the most sunshine hours of the year at 361 hours, creating optimal conditions for outdoor activities and beach-goers alike.
As summer unfolds, Isabela maintains impressive sunshine totals, with July also registering 361 hours. However, the sun-soaked days lessen slightly in August, dropping back to 352 hours. The transition into autumn brings a gentle decline, with September and October experiencing 316 hours each, still providing ample sunlight. Notably, November sees a reduction to 298 hours, while December wraps up the year with 320 hours. This overall pattern underscores Isabela's appeal as a sun-kissed destination, making it an attractive locale for those seeking a warm and bright climate year-round.
The UV Index in Isabela, Puerto Rico, indicates consistently high levels of ultraviolet radiation throughout the year, presenting significant implications for sun safety. Starting in January with a UV Index of 9 classified as "very high," the region quickly escalates to extreme levels by February, recording a peak of 11. This trend continues into early spring, with March and April both maintaining an extreme index of 13, requiring caution and protective measures for outdoor activities. Notably, May reaches its zenith at 14, emphasizing the urgency of sun protection during this month, as the burn time is limited to just 10 minutes at this level.
Throughout the summer months, the UV Index remains consistently extreme, at 13 from June to September, with a slight dip to 12 in October. The year then concludes with a return to 9 in November and 8 in December, once again reflecting the "very high" category. The high UV levels throughout the year underscore the importance of sun safety practices for both residents and visitors, particularly in peak months, as prolonged exposure without protection can quickly lead to skin damage.
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In Isabela, Puerto Rico, daylight duration exhibits a subtle yet discernible seasonal pattern, largely characterized by stability throughout the year. Both January and February offer approximately 11 hours of daylight, providing a consistent backdrop for winter activities. As spring approaches in March, daylight begins to increase to 12 hours, a trend that continues through April and May, offering ample time for outdoor pursuits and leisure. The consistency in daylight during these months cultivates a vibrant atmosphere, inviting residents and visitors to enjoy Isabela's natural beauty.
The peak of daylight is reached in June and July, with each month providing 13 hours of sunlight, ideal for sun-soaked adventures. However, as the summer transitions into autumn, daylight durations revert to 12 hours in August and September, before declining again to 11 hours in October through December. This gradual decrease signals the close of the year, although the richness of daylight across the seasons ensures that Isabela remains an appealing destination for those seeking both relaxation and outdoor engagement throughout the year.
Isabela, Puerto Rico, enjoys a warm tropical climate characterized by mild temperatures year-round. Average daily temperatures range from 25°C (77°F) in January to 27°C (81°F) from June to October, with highs reaching up to 32°C (89°F) in August. The rainy season peaks in September, receiving about 188 mm (7.4 in) of precipitation, while the sun shines brightly, particularly from March to May, averaging around 347 to 361 hours of sunshine per month. For more detailed information, visit Isabela climate.
Mora, Puerto Rico experiences a warm tropical climate characterized by consistent temperatures ranging from a minimum of 20°C (69°F) in January to a maximum of 32°C (89°F) in August. The area receives the most rainfall in September, with 188 mm (7.4 in), whilst January is typically the driest month with 34 mm (1.3 in). Sunshine hours peak in May and July, averaging around 361 hours, contributing to a vibrant ecosystem. Overall, the climate in Mora is marked by warmth and humidity, making it a picturesque location year-round. For more detailed information, visit Mora climate.
In conclusion, Isabela, Puerto Rico, presents a dynamic climate characterized by its warm temperatures, consistent sunshine, and high UV Index, making it a prime location for outdoor enthusiasts year-round. The notable seasonal variations in precipitation and daylight duration further enhance the region's allure, with ample opportunities for exploration and leisure during the long sunny days of summer and the gentle warmth of winter. Understanding these climatic patterns not only emphasizes the region's tropical charm but also underscores the importance of sun safety and preparedness for both residents and visitors, ensuring that everyone can maximize their experience in this vibrant destination.