Last updated: August 31, 2025
In Arecibo, Puerto Rico, October showcases a tropical climate characterized by warm temperatures and substantial rainfall. With a maximum temperature reaching 31°C (89°F) and an average of 27°C (80°F), the month offers a balmy atmosphere accented by a minimum of 23°C (74°F). Rain is a notable feature, as October records an impressive 161 mm (6.4 in) of precipitation over 23 days, resulting in high humidity levels averaging 78%. This combination of heat and moisture creates a lush environment, perfect for experiencing the beauty of Arecibo while also preparing for intermittent showers.
In Arecibo, Puerto Rico, October marks a transition into the heart of the fall season while maintaining the island's trademark warmth. With minimum temperatures settling around 23°C (74°F) and average highs reaching 31°C (89°F), the month showcases a slight dip from the sweltering summer highs that characterize the preceding months. Notably, October's average of 27°C (80°F) provides a comfortable balance, allowing visitors to enjoy outdoor adventures without the oppressive heat. As the month progresses, the temperatures gently pave the way for the cooler November days ahead, reflecting the island's inviting tropical climate that remains enjoyable year-round.
In October, Arecibo, Puerto Rico experiences significant rainfall, recording an impressive 161 mm (6.4 in) over approximately 23 days. This marks a noticeable peak following the intense deluge of September, which, with 205 mm (8.1 in), often sets the stage for October’s continued wet conditions. Interestingly, while the total precipitation amount slightly decreases from September, the number of rainy days in October remains consistent, indicating that showers are frequent but may be lighter in intensity. As the month progresses, this persistent precipitation supports the lush environment of Arecibo, highlighting the region's dynamic weather patterns as it transitions into the cooler months ahead.
In Arecibo, Puerto Rico, October brings a humidity level of 78%, reflecting a slight decrease from the peak months of July and August, which recorded 80%. This drop indicates a gentle transition into the cooler months, as the humidity levels gradually stabilize around 78% into November. The trend throughout the year shows a gradual increase in humidity starting from January's 76% to the summer highs, followed by a slow decline as the year progresses. Overall, October sits comfortably in the middle of the annual humidity spectrum, maintaining the island’s tropical allure while hinting at the onset of the drier season.
In October, Arecibo, Puerto Rico, experiences a UV Index of 12, placing it in the extreme exposure category with a burn time of just 10 minutes. This pattern reflects the ongoing trend observed from January to September, where the UV Index remains consistently high, peaking at 14 in May before slightly tapering off in October. As we transition from summer into fall, UV radiation remains a pressing concern, urging residents and visitors alike to take precautions throughout the month. With the UV Index expected to decrease further in November, it's essential to stay vigilant and protect your skin from the sun's intense rays. For detailed insights on sun exposure, check the Arecibo UV Index.
UV Risk Categories
October in Arecibo, Puerto Rico, offers a delightful blend of sunshine, with 314 hours illuminating the month. As the year progresses, daylight begins to wane slightly, reflecting a subtle shift from the summer's peak brightness, where May and July bask in a generous 359 hours of sun. This trend of diminishing sunlight continues as the calendar transitions from summer into autumn, yet October remains comparable to the previous month, September, which enjoys 314 hours as well. While November signals a further drop to 298 hours, October stands as a bridge, providing ample opportunity to enjoy Arecibo's stunning landscapes under a beautiful, golden sun.
In Arecibo, Puerto Rico, October brings a moderate chance of sunshine, at 47%. This figures reflects a pattern where the summer months tend to exhibit lower sun probabilities, as seen in June and July, which drop to 29% and 45%, respectively. As the year transitions into fall, the likelihood of sunny days begins to recover, with October outperforming its preceding months of September and August, both at 49%. Notably, the trend suggests that as the dry season approaches, the chances for clearer skies rise again, boosting optimism for those hoping to enjoy Arecibo's natural beauty during the autumn.
In Arecibo, Puerto Rico, the daylight duration exhibits a captivating cyclical pattern throughout the year. Starting from January to February, citizens enjoy a consistent 11 hours of daylight. As spring approaches in March, the days begin to lengthen, gradually extending to 12 hours from March through May. The peak of summer in June and July brings a delightful 13 hours of daylight, perfect for outdoor adventures. However, as summer transitions into autumn, the daylight gradually shortens again, returning to 12 hours in August and September, before settling back to 11 hours in October. This ebb and flow of daylight not only enhances Arecibo’s stunning landscapes but also enriches the island's vibrant lifestyle throughout the year.
As October arrives in Arecibo, Puerto Rico, the winds slow down to a gentle average speed of 3.2 m/s (7 mph), mirroring the calmness that often settles over the region as the year draws to a close. This drop marks a continuation of a trend seen since mid-summer, where peak speeds hovered around 5.2 m/s (12 mph) in February and 5.1 m/s (11 mph) in July. Following the brisk winds of the warmer months, October’s light breezes signal a comforting shift, reminiscent of the island's tranquil autumn sun. As the winds remain relatively mild, Arecibo’s picturesque landscapes can be truly appreciated, allowing locals and visitors alike to revel in the serene beauty of the season.
Weather in Arecibo varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Arecibo, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in October and January, October tends to be warmer and significantly wetter. In October, temperatures range from a minimum of 23°C (74°F) to a maximum of 31°C (89°F), with an average of 27°C (80°F) and high humidity at 78%. The month also experiences substantial precipitation, totaling 161 mm (6.4 in) over 23 days. In contrast, January is cooler, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 29°C (84°F), and an average temperature of 24°C (76°F). Additionally, January is much drier, receiving only 41 mm (1.6 in) of rain across 11 days and maintaining a slightly lower humidity level at 76%. For more detailed information, you can check Arecibo weather in January.
October and February exhibit distinct weather patterns, showcasing a transitional change from the wet season to a drier period. In October, temperatures range from a minimum of 23°C (74°F) to a maximum of 31°C (89°F), accompanied by considerable rainfall of 161 mm (6.4 in) over 23 days and a humidity level of 78%. In contrast, February offers slightly cooler temperatures, with a minimum of 20°C (68°F) and a maximum of 30°C (86°F), and significantly less precipitation at 47 mm (1.8 in) over just 13 days, along with a slightly lower humidity of 75%. For more detailed insights, you can check this link: Arecibo weather in February.
When comparing the weather in October and March, there are notable differences in temperature and precipitation. October tends to be warmer overall, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 31°C (89°F), while March has slightly cooler averages, with minimums of 20°C (68°F) and maximums of 30°C (86°F). Rainfall is also more prevalent in October, receiving 161 mm (6.4 in) over 23 days compared to March's 87 mm (3.4 in) over 16 days. Furthermore, October's humidity is higher at 78%, compared to March's 74%. For a more detailed look at the weather patterns specifically in March, you can check Arecibo weather in March.
October and April showcase distinct weather patterns, with October generally being warmer and wetter. In October, temperatures range from a minimum of 23°C (74°F) to a maximum of 31°C (89°F), with an average of 27°C (80°F). This month experiences considerable rainfall, averaging 161 mm (6.4 in) over 23 days, resulting in a humidity level of 78%. In contrast, April offers milder conditions, with temperatures from a minimum of 20°C (69°F) to a maximum of 30°C (87°F) and an average of 25°C (77°F). Precipitation is also significantly lower in April, at 79 mm (3.1 in) over just 13 days and a humidity level of 75%. For a detailed look at Arecibo's weather in April, check out Arecibo weather in April.
In comparing the weather of October and May, October tends to be slightly warmer with average temperatures averaging around 27°C (80°F) compared to May's 26°C (79°F). Moreover, October experiences higher maximum temperatures, reaching up to 31°C (89°F), whereas May can peak at 32°C (91°F). Precipitation is notably heavier in October, with 161 mm (6.4 in) recorded over 23 days, compared to May's 98 mm (3.9 in) over 16 days. Humidity levels are also slightly higher in October at 78%, compared to 75% in May. For more detailed information, you can check Arecibo weather in May.
In comparing the weather between October and June, both months exhibit similar minimum temperatures of 23°C (74°F) and average temperatures around 27°C (80°F). However, June tends to be slightly warmer, reaching a maximum of 32°C (89°F), compared to October's maximum of 31°C (89°F). October is notably wetter, receiving 161 mm (6.4 in) of precipitation over 23 days, while June has a milder rainfall of 90 mm (3.5 in) across just 14 days. Humidity levels remain comparable, with October at 78% and June at 77%. For a more detailed look at June weather specifics, you can refer to this link: Arecibo weather in June.
In comparing the weather of October and July, both months showcase warm temperatures, with October experiencing a slightly lower minimum temperature of 23°C (74°F) compared to July's 24°C (75°F). The average temperatures remain similar, around 27°C (80°F) to 27°C (81°F), while July boasts a slightly higher maximum temperature of 32°C (90°F) compared to October's peak of 31°C (89°F). However, October sees significantly more rainfall, with 161 mm (6.4 in) over 23 days, in contrast to July's 91 mm (3.6 in) over 16 days, resulting in a wetter month. Both months exhibit high humidity levels, but October holds a marginally lower humidity at 78%, compared to July's 80%. For more insights on July weather, you can visit Arecibo weather in July.
In comparing the weather of October and August, we see some notable similarities and differences. Both months feature an average temperature around 27°C (81°F), but October experiences slightly lower maximum temperatures, reaching up to 31°C (89°F) compared to August’s 32°C (90°F). Precipitation is more significant in October, with 161 mm (6.4 in) falling over 23 days, while August sees a total of 104 mm (4.1 in) over 19 days, indicating that October is typically wetter. Additionally, humidity levels remain high in both months, with October at 78% and August at 80%. For a more detailed look at August weather, you can visit Arecibo weather in August.
In comparing the weather of October and September, we see that October experiences slightly cooler temperatures overall, with a minimum of 23°C (74°F) compared to September's 24°C (75°F). Both months have the same average temperature of 27°C (81°F), but September reaches a higher maximum of 32°C (90°F) versus October’s 31°C (89°F). Precipitation is notably higher in September, with 205 mm (8.1 in) compared to October's 161 mm (6.4 in), although both months have 23 days of rainfall. Humidity levels remain comparable, with October at 78% and September slightly higher at 79%. For more detailed information about September weather, you can check Arecibo weather in September.
October and November share similar temperature ranges, with October averaging 27°C (80°F) and November slightly cooler at 26°C (79°F). Both months experience warm conditions, with maximum temperatures reaching up to 31°C (89°F) in October and 31°C (88°F) in November. However, October is noticeably wetter, receiving 161 mm (6.4 in) of precipitation over 23 days, compared to November's 109 mm (4.3 in) over 18 days. Humidity remains constant at 78% in both months, maintaining an overall tropical feel. For a more detailed look at November weather, check out Arecibo weather in November.
In October, the weather remains warm with average temperatures peaking at 27°C (80°F) and a maximum of 31°C (89°F). However, it is also significantly wetter, with 161 mm (6.4 in) of rainfall over 23 days, leading to a humidity level of 78%. In contrast, December features slightly cooler temperatures, with an average of 25°C (77°F) and a maximum of 31°C (88°F), but with much less precipitation at 45 mm (1.8 in) across 15 days. The humidity also drops slightly to 76%. For a detailed overview of the climate, check out Arecibo weather in December.
As October unfolds in Arecibo, the weather takes on a distinctive character compared to other months. With an average temperature around 27°C (80°F), residents and visitors experience warm days punctuated by regular rainfall, totaling 161 mm over 23 days. The humidity levels hover around 78%, creating a tropical atmosphere that feels markedly more intense than the drier months. This blend of warmth and precipitation not only contributes to the lush landscape but also invites a vibrant tapestry of outdoor activities and cultural events. For a deeper insight into what makes Arecibo's climate unique, check out Arecibo Climate.