Last updated: August 31, 2025
In Aguadilla, Puerto Rico, September offers a tropical climate characterized by warm temperatures and notable humidity. With a maximum temperature reaching 30°C (86°F) and an average of 28°C (82°F), the weather remains consistently inviting, although nights can cool down to a pleasant 25°C (78°F). However, this month also brings significant rainfall, averaging 151 mm (5.9 in) over approximately 19 days, contributing to a humidity level of about 79%. Visitors should prepare for both sun-soaked moments and the occasional downpour, making September a dynamic time to experience the charm of Aguadilla.
In September, Aguadilla, Puerto Rico, enjoys warm tropical weather, with temperatures ranging from a comfortable 25°C (78°F) at night to a balmy 30°C (86°F) during the day. This month marks a noticeable continuation of summer's warmth, featuring an average temperature of 28°C (82°F), which remains consistent with the trend seen in the preceding months of August and July. The slight dip in nighttime lows compared to previous months still ensures that evenings are pleasant. As summer transitions to fall, visitors can expect a mix of sunny days and occasional showers, making September an ideal time to experience the vibrant culture and stunning beaches of this island paradise.
In September, Aguadilla, Puerto Rico experiences a significant spike in precipitation, recording an impressive 151 mm (5.9 in) of rain over 19 days. This marks a notable increase compared to the drier months earlier in the year, where rainfall typically hovers below 72 mm. The arrival of September signals the peak wet season for the region, as tropical systems often contribute to heavier downpours. While prior months like August still showcased substantial rainfall at 68 mm, September's totals underscore the transition into a wetter climatic phase, capturing the attention of both residents and travelers seeking to navigate the island's unpredictable weather.
In September, the humidity in Aguadilla, Puerto Rico, hovers around a moderate 79%, reflecting a slight decrease from the preceding two humid months of August and July, both of which registered at 80%. This gradual decline is part of a larger trend, as humidity levels tend to peak during the summer months and then gradually ease into the fall. Notably, the overall humidity in September remains consistent with the levels observed throughout the warmer months, showcasing Aguadilla's tropical climate. As the year progresses into October, the humidity is expected to drop further to 78%, marking a transition towards slightly drier conditions as the region moves away from the summer heat.
As summer transitions into fall, September in Aguadilla, Puerto Rico maintains an impressively high UV Index of 13, classified as extreme, with a burn time of just 10 minutes. This determination is consistent with the preceding months, where the UV Index has consistently hovered between 13 and 14 from May through September, signaling a period of intense sun exposure. Notably, the UV Index begins to gradually decrease in October, but for those basking in September's sun, it’s crucial to take precautions to protect your skin. For more detailed information on UV levels and safety tips, visit Aguadilla UV Index.
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As the summer heat begins to wane, September in Aguadilla, Puerto Rico still shines brightly with an impressive 316 hours of sunshine. This month captures the remnants of summer while transitioning into the softer light of autumn. Following the peak of 361 hours in both May and July, September shows a slight decrease, yet it maintains a robust presence of sunshine, far from the winter months, which dip noticeably to 298 hours in November. This trend highlights Aguadilla's role as a sun-soaked paradise, where vibrant days linger into the fall, inviting visitors to bask in the warmth of the Caribbean sun. With September's radiant light, the allure of this coastal gem remains irresistible, ensuring it stays a favorite among sun-seekers.
In Aguadilla, Puerto Rico, September showcases a 56% chance of sunny weather, making it a reasonably bright month amidst the picturesque coastal setting. This likelihood reflects a slight uptick from the dreary summer months of June and July, which dip to the lower 30s and 50s in terms of sunshine. September's sun exposure is comparable to that of earlier in the year, with the probability of clear skies lingering close to the averages seen in May and October. As the island transitions from summer to fall, September offers a delightful balance between sun and occasional rain, making it a charming time for beachgoers and outdoor enthusiasts.
In September, Aguadilla, Puerto Rico enjoys around 12 hours of daylight, maintaining the balanced light typical of summer. As the year progresses from January to July, the region experiences a gradual increase in daylight hours, peaking at 13 hours in June and July. However, as autumn approaches, daylight begins to taper off, transitioning back to 11 hours in October. This shift highlights a harmonious rhythm of light and dark that characterizes Aguadilla's climate, providing a lovely backdrop for outdoor adventures throughout the changing seasons.
In Aguadilla, Puerto Rico, September brings a gentle sigh in the form of wind, with an average speed of 4.2 m/s (10 mph)—the lightest of the year. As summer gives way to the fall, wind speeds start to dip gradually from the breezy highs of January through August, where speeds range from 5.4 m/s to 6.3 m/s. This trend continues into October, further softening to 3.9 m/s (9 mph). Interestingly, after the balmy breezes of mid-year, September’s calming winds create a tranquil atmosphere—ideal for exploring Aguadilla's stunning beaches and rich landscapes. It's a time when the coastline whispers gently, inviting relaxation and reflection as nature transitions toward the cooler months ahead.
Weather in Aguadilla varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Aguadilla, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January display notable differences in weather patterns. September tends to be warmer, with average temperatures reaching around 28°C (82°F) and maximums soaring to 30°C (86°F). Additionally, it is a wetter month, recording 151 mm (5.9 in) of precipitation over 19 days, contributing to a humidity level of 79%. In contrast, January experiences milder temperatures, averaging 25°C (78°F) with maximums around 28°C (83°F). It is also significantly drier, with only 23 mm (0.9 in) of rainfall across 8 days and a slightly lower humidity of 76%. For a more detailed comparison, check out the Aguadilla weather in January.
The weather in September tends to be warmer and more humid compared to February. With average temperatures hovering around 28°C (82°F) and maximums reaching up to 30°C (86°F), September experiences a significant amount of rainfall, totaling 151 mm (5.9 in) over 19 days. In contrast, February brings slightly cooler temperatures, averaging 25°C (77°F) with maximums of 29°C (84°F) and considerably less precipitation at just 26 mm (1.0 in) over 7 days. Additionally, the humidity in September is higher at 79%, while February sees a lower humidity level of 75%. For more detailed information, you can check the link: Aguadilla weather in February.
In September, the weather is warmer with temperatures ranging from a minimum of 25°C (78°F) to a maximum of 30°C (86°F), and an average temperature of 28°C (82°F). The month is also characterized by significant rainfall, with 151 mm (5.9 in) of precipitation over 19 days and humidity levels around 79%. In contrast, March has slightly cooler temperatures, with a minimum of 22°C (72°F), an average of 25°C (77°F), and a maximum of 28°C (82°F). Precipitation is lower in March, totaling 46 mm (1.8 in) over 12 days, and humidity is slightly reduced at 74%. For more detailed weather information, check out Aguadilla weather in March.
September and April present notably differing weather patterns. In September, temperatures are warmer, with a minimum of 25°C (78°F) and an average high of 30°C (86°F), accompanied by high humidity at 79%. This month also sees significant rainfall, with 151 mm (5.9 in) spread over 19 days, making it a wetter time of year. In contrast, April offers slightly cooler conditions, with temperatures ranging from a minimum of 23°C (73°F) to a maximum of 28°C (84°F), and lower humidity at 75%. The precipitation is also significantly less in April, totaling just 37 mm (1.4 in) over 11 days. For more details on April weather, check out Aguadilla weather in April.
In comparing the weather between September and May, September tends to be slightly warmer, with minimum temperatures of 25°C (78°F) and an average of 28°C (82°F), peaking at 30°C (86°F). In contrast, May's temperatures are a bit cooler, ranging from a minimum of 24°C (76°F) to a maximum of 29°C (85°F), with an average of 26°C (80°F). Additionally, September experiences significantly more precipitation, totaling 151 mm (5.9 in) over 19 days, compared to May's 57 mm (2.3 in) over 16 days. Humidity levels are also slightly higher in September at 79%, while May sees a more comfortable 75% humidity. For more details on May weather, you can check Aguadilla weather in May.
In comparing the weather conditions of September and June, both months experience similar temperature ranges with minimums around 25°C (77-78°F) and maximums reaching 30°C (86°F). However, September tends to be wetter, receiving 151 mm (5.9 in) of precipitation over 19 days, compared to June's much drier climate with only 52 mm (2.1 in) over 15 days. Additionally, September exhibits slightly higher humidity levels at 79%, while June's humidity sits at 77%. For a more detailed look at the weather during June, you can visit Aguadilla weather in June.
In comparing the weather in September and July, we notice some intriguing similarities and differences. Both months share a minimum temperature of 25°C (78°F) and a maximum of 30°C (86°F), providing warm conditions. However, while July has a slightly lower average temperature of 27°C (82°F), September sees a slight increase with an average of 28°C (82°F). Precipitation levels differ significantly; September experiences much heavier rainfall with 151 mm (5.9 in) over 19 days, compared to July's 72 mm (2.8 in) over 16 days. Humidity remains relatively constant, with September at 79% and July at 80%. For a more detailed look at July’s weather, check out Aguadilla weather in July.
In comparing the weather between September and August, we see that both months experience similar temperature ranges, with minimums around 25°C (78°F) and maximums reaching up to 30°C (86°F in September and 87°F in August). However, September is notably wetter, with 151 mm (5.9 in) of precipitation over 19 days, in contrast to August, which has only 68 mm (2.7 in) over 17 days. Humidity levels are quite comparable, hovering around 79% in September and 80% in August. For more details on August weather in Aguadilla, you can visit Aguadilla weather in August.
In comparison to September, October sees slightly lower average temperatures, with September averaging 28°C (82°F) and October at 27°C (81°F). While both months experience similar minimum temperatures of 25°C (78°F), October's maximum temperature can reach 31°C (88°F), slightly higher than September's 30°C (86°F). One notable change is the reduction in precipitation; September typically receives 151 mm (5.9 in) over 19 days, while October experiences only 83 mm (3.3 in) across 15 days. Humidity remains relatively consistent, with September at 79% and October slightly lower at 78%. For more detailed weather insights, you can visit Aguadilla weather in October.
September and November offer distinct weather experiences, reflecting the transition from the wet season to a slightly dryer period. In September, temperatures range from a minimum of 25°C (78°F) to a maximum of 30°C (86°F) with an average of 28°C (82°F). The month sees substantial rainfall, with 151 mm (5.9 in) over 19 days, contributing to a humidity level of 79%. In contrast, November presents slightly cooler temperatures, with a minimum of 24°C (76°F) and a maximum of 29°C (85°F), averaging 27°C (80°F). Rainfall decreases significantly to 75 mm (3.0 in) over 15 days, while humidity remains relatively stable at 78%. For a more detailed overview of November's weather, you can check out Aguadilla weather in November.
In comparing the weather between September and December, we find notable differences in both temperature and precipitation. September generally features warmer temperatures, with an average of 28°C (82°F), peaking at a maximum of 30°C (86°F) and experiencing high humidity at 79%. In contrast, December is slightly cooler, with average temperatures around 26°C (79°F) and maximums of 29°C (84°F), accompanied by a decrease in humidity to 76%. Moreover, September sees significantly more rainfall, with a total of 151 mm (5.9 in) over 19 days, while December enjoys much drier conditions, only receiving 30 mm (1.2 in) over just 9 days. For more details, you can check out Aguadilla weather in December.
September in Aguadilla presents a blend of warm temperatures and notable humidity, making it distinct from the other months of the year. With an average temperature around 28°C (82°F), it offers a comfortable warmth that is characteristic of this tropical paradise. However, it also witnesses a higher level of precipitation, often resulting in rainy days that add a refreshing touch to the lush surroundings. The month captures the essence of the rainy season, with frequent showers and 79% humidity, creating a vibrant atmosphere filled with serenity. For those looking to understand the climatic trends further, the insights can be explored at Aguadilla Climate.