Last updated: August 31, 2025
September in Ponce, Puerto Rico presents a warm tropical climate, with maximum temperatures reaching up to 30°C (86°F) and an average of 26°C (80°F). The month is characterized by high humidity levels around 79%, making it feel quite warm and muggy. Rainfall is common, with an impressive total of 158 mm (6.2 in) spread over 23 days, so visitors should be prepared for frequent showers. This vibrant weather creates a lush, green landscape that reflects the island’s natural beauty, but it’s essential to plan activities accordingly to enjoy all that Ponce has to offer.
September in Ponce, Puerto Rico is characterized by warm, tropical temperatures that invite relaxation and exploration. With minimums around 23°C (75°F), the nights offer a comfortable respite, while the average temperature hovers at 26°C (80°F), ideal for enjoying outdoor activities. Daytime highs can reach up to 30°C (86°F), echoing the summer warmth, yet the slight dip in temperature from the preceding months signals a transitional phase. This month sees a continuation of the warm weather pattern established in the summer, making it a delightful time for beachgoers and adventurers alike, as they bask in the enchanting Caribbean climate.
In September, Ponce, Puerto Rico experiences a significant uptick in precipitation, with an impressive 158 mm (6.2 in) of rain over 23 days, making it the wettest month of the year. This sharp increase follows the already substantial rainfall in August (89 mm), indicating the peak of the rainy season. Such consistent precipitation can be attributed to tropical weather patterns that dominate the region during this time, often delivering intense showers that contribute to the lush landscapes. As the rainy season transitions into October, the rainfall slightly diminishes to 115 mm, but September undeniably sets the benchmark for moisture, highlighting the vibrant dynamics of Ponce's climate.
In September, humidity in Ponce, Puerto Rico, hovers at 79%, marking a slight decline from the peak levels seen in the summer months of July and August, which recorded 81% and 80% respectively. This subtle decrease signals the transition into the autumn season, although the humidity remains relatively high throughout the year, with average figures consistently ranging between 75% and 81%. The data suggests a gradual rise in humidity from the drier months of early winter and spring, culminating in a peak during the heart of summer, followed by a gentle drop as the year progresses toward its end. Overall, Ponce’s climate illustrates a consistent and humid tropical atmosphere, characteristic of its coastal location.
In September, Ponce, Puerto Rico, experiences a UV Index of 14, marking it as an extreme exposure period with a burn time of merely 10 minutes. This month reflects a trend seen throughout the warmer months; from February to September, the UV Index remains consistently high, oscillating between 13 and 14. As the summer wanes and autumn approaches, this sustained intensity calls for vigilance, emphasizing the importance of sun protection. Understanding these trends can help residents and visitors alike make informed choices about sun exposure. For more detailed information on UV levels throughout the year, visit Ponce UV Index.
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September in Ponce, Puerto Rico, welcomes a delightful average of 316 hours of sunshine, marking a slight dip from the peak summer months of May through July, where sunlit days soared above 350 hours. This month reflects the gradual transition into the autumn season, as the island shifts from its sun-drenched summer warmth. Despite the decrease, September still boasts over 300 hours of radiant skies, making it an inviting time for outdoor adventures and exploration. Following September, October continues this trend with 314 hours of sunshine, reinforcing Puerto Rico's reputation for ample sunlight throughout the year. As summer fades, Ponce still basks in golden rays, offering visitors a perfect blend of summer warmth and early fall charm.
In September, Ponce, Puerto Rico enjoys a 50% chance of sunny weather, striking a balance that reflects the transitions in the Caribbean climate. As the summer months come to a close, the sun's appearance sees a slight revival from the lower percentages of June and July, which dip to 25% and 43% respectively. Interestingly, as we move into autumn, the likelihood of sunny days remains relatively stable, with October not straying far at 49%. This hints at the persistence of warm, sunny days that characterize Ponce's charm, making September a delightful time for those seeking a mix of summer's end and the onset of fall.
In September, Ponce, Puerto Rico, enjoys a generous 12 hours of daylight, maintaining the consistent trend seen through the late summer months. As the year transitions from the longer days of June and July, which boast a peak of 13 hours, daylight starts to gradually decline. This slight decrease continues into October, where the duration shortens to 11 hours. Overall, September stands out as a perfect midpoint, offering ample sunlight for outdoor activities while signaling the approach of autumn, blending the vibrancy of summer with the warm hues of the upcoming season.
In September, the wind in Ponce, Puerto Rico, finds a gentle rhythm, as average speeds dip to a calm 3.3 m/s (7 mph). This marks a noticeable decline from the more spirited breezes of the summer months, such as July and August, which enjoyed averages of 5.6 m/s (13 mph) and 4.8 m/s (11 mph) respectively. As the year progresses, it seems the winds ease into a more tranquil mode, with October and November also featuring similar subdued speeds of 3.9 m/s (9 mph). This trend suggests that as the tropical heat begins to wane, Ponce experiences a serene shift in its atmospheric mood, inviting locals and visitors alike to enjoy the softer embrace of the September winds.
Weather in Ponce varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ponce, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is notably warmer, with average temperatures around 26°C (80°F) and highs reaching up to 30°C (86°F). This month also experiences significant rainfall, with about 158 mm (6.2 in) of precipitation spread over 23 days, resulting in a humidity level of 79%. In contrast, January offers milder conditions, with average temperatures dropping to 24°C (75°F) and maximums reaching 27°C (81°F). Rainfall decreases substantially to just 26 mm (1.0 in) over 10 days, and humidity is slightly lower at 76%. For a more detailed look at the weather patterns during this time, check out Ponce weather in January.
In September, the weather is typically warmer, with average temperatures ranging from a minimum of 23°C (75°F) to a maximum of 30°C (86°F). This month also sees significant rainfall, with 158 mm (6.2 in) of precipitation spread over 23 days and high humidity at 79%. In contrast, February offers a slightly cooler climate, with temperatures averaging from a minimum of 20°C (68°F) to a maximum of 27°C (82°F). Rainfall is considerably less, totaling only 28 mm (1.1 in) over 8 days, and humidity is slightly lower at 75%. For more detailed information about the weather in February, you can visit Ponce weather in February.
In comparing the weather between September and March, September tends to be warmer and much more humid. With average temperatures around 26°C (80°F) and highs reaching up to 30°C (86°F), it's noticeably hotter than March, where the average temperature is 24°C (75°F) and peaks at 27°C (81°F). Additionally, September experiences significantly higher precipitation, with 158 mm (6.2 in) over approximately 23 days, contrasting with March's 53 mm (2.1 in) spread across 14 days. This results in a more humid atmosphere in September, with humidity levels at 79% compared to 75% in March. For a more detailed look at March weather conditions, you can explore Ponce weather in March.
September and April exhibit notable differences in weather patterns. September typically experiences higher temperatures, with a minimum of 23°C (75°F) and an average of 26°C (80°F), peaking at 30°C (86°F). In contrast, April's temperatures range from a minimum of 20°C (69°F) to an average of 24°C (76°F), maxing out at 28°C (83°F). Rainfall is more prevalent in September, with 158 mm (6.2 in) of precipitation over 23 days, compared to April's much lighter 50 mm (2.0 in) across 16 days. Humidity levels are also slightly higher in September at 79%, while April maintains a comfortable 76%. For more detailed insights, you can check Ponce weather in April.
When comparing the weather in September and May, September tends to be warmer and wetter. September's average temperature is slightly higher, ranging from a minimum of 23°C (75°F) to a maximum of 30°C (86°F), while May's temperatures vary from 22°C (72°F) to 29°C (85°F). Notably, September experiences significantly more rainfall, with a total precipitation of 158 mm (6.2 in) across 23 days, compared to May's 62 mm (2.4 in) over 17 days. Humidity levels are fairly similar, with September at 79% and May at 76%. For more detailed insights on the climate, check out Ponce weather in May.
In comparing the weather of September and June, both months exhibit warm temperatures, with September experiencing slightly higher maximum temperatures averaging around 30°C (86°F) compared to June's 29°C (85°F). Humidity levels remain relatively similar, with September at 79% and June at 78%. However, September is notably wetter, receiving 158 mm (6.2 in) of precipitation over 23 days, while June sees significantly less rainfall at 55 mm (2.2 in) across 15 days. For a detailed look at June weather in Ponce, you can visit Ponce weather in June.
In comparing the weather between September and July, both months exhibit similar temperature ranges, with minimum temperatures around 23°C (75°F), average temperatures of 26°C (80°F), and maximums peaking at 30°C (86°F in September and 87°F in July). However, September sees significantly higher precipitation, measuring 158 mm (6.2 in) over 23 days compared to July's 83 mm (3.3 in) over just 15 days. Additionally, humidity levels are slightly lower in July at 81%, while September's humidity rises to 79%. For more detailed insights on July weather, you can visit Ponce weather in July.
In comparing the weather patterns of September and August, both months maintain a similar temperature range, with September showing a minimum temperature of 23°C (75°F), an average of 26°C (80°F), and a maximum reaching 30°C (86°F). August, on the other hand, exhibits similar minimum and maximum temperatures, but with a slightly warmer average of 27°C (80°F). Precipitation levels vary notably; September experiences significantly more rain with 158 mm (6.2 in) over 23 days, compared to August's 89 mm (3.5 in) across 16 days. This results in September having slightly higher humidity at 79% compared to August's 80%. If you're interested in a more detailed overview of August's weather, you can check out this Ponce weather in August.
In comparing the weather between September and October, we can observe that both months feature similar temperature ranges, with September and October both experiencing minimum temperatures around 23°C (75°F), average temperatures of 26°C (79°F to 80°F), and maximums reaching 30°C (86°F). However, October tends to be slightly drier, with precipitation measuring 115 mm (4.5 in) compared to September's 158 mm (6.2 in). Additionally, while both months have approximately 23 days with precipitation, October exhibits marginally lower humidity at 78%, compared to September's 79%. For more details on October's weather, you can visit Ponce weather in October.
In September, the weather tends to be warm and humid, with minimum temperatures averaging around 23°C (75°F) and maximum temperatures reaching up to 30°C (86°F). This month experiences considerable rainfall, with an average precipitation of 158 mm (6.2 in) spread over 23 days, contributing to a high humidity level of 79%.
In contrast, November offers slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 29°C (85°F), while the average temperature drops to 25°C (78°F). Precipitation also decreases significantly to 88 mm (3.5 in) over just 17 days, leading to a marginally lower humidity level of 78%. For more detailed information about the weather in Ponce during November, you can check Ponce weather in November.
In comparing the weather of September and December, September tends to be warmer with average temperatures around 26°C (80°F) and peaks reaching up to 30°C (86°F). This month also experiences higher precipitation, with 158 mm over 23 days, resulting in a humid environment with humidity levels around 79%. In contrast, December's mild climate features slightly lower average temperatures at 25°C (76°F) and a maximum of 28°C (84°F). The rainfall dramatically decreases to 31 mm over just 10 days, and humidity remains relatively stable at 77%. For more details on December weather specifics, check out Ponce weather in December.
As summer transitions to fall, September in Ponce showcases a blend of warm temperatures and notable humidity, creating a tropical feel that's characteristic of this vibrant city. While the average temperature hovers around a comfortable 26°C (80°F), the increased rainfall—with precipitation occurring on 23 days, accumulating to 158 mm (6.2 in)—sets this month apart from the drier periods earlier in the year. This combination of higher humidity and frequent showers not only enriches the lush landscape but also invites you to experience Ponce's unique charm. For more insights into how the weather impacts the living and visiting experience, explore Ponce Climate.