Last updated: August 31, 2025
Experience the enchanting weather of Rincon, Puerto Rico in September, where the tropical climate captivates visitors with maximum temperatures reaching 31°C (87°F) and a comfortable average of 28°C (82°F). While basking in the warmth, be prepared for occasional showers, as the month sees 141 mm (5.5 in) of rain across 18 days, contributing to the lush landscape. With humidity levels around 79%, the atmosphere remains pleasantly tropical, offering a true taste of paradise for beachgoers and adventurers alike. Embrace the vibrant rhythm of Rincon this September!
In September, Rincon, Puerto Rico, experiences a tropical embrace with temperatures that mirror the peak of summer. The month brings a minimum temperature of 25°C (78°F), while the average hovers around 28°C (82°F), peaking at a comfortable 31°C (87°F). This slight uptick from August signifies a persistence of warmth before the autumn transition, as the humidity persists, maintaining the balmy climate familiar to this coastal paradise. As the month unfolds, the consistent warmth invites beachgoers and adventurers alike to revel in the vibrant culture and scenic beauty, making it an ideal time to soak up the sun and enjoy outdoor activities against the backdrop of a stunning Caribbean sunset.
In September, Rincon, Puerto Rico experiences a notable spike in precipitation, with 141 mm (5.5 in) of rain falling over 18 days. This significant amount marks a departure from the relatively drier summer months, indicating the onset of the rainy season. Historically, September's rainfall is the highest of the year, overshadowing the previous months and reflecting a trend where the latter part of the year brings more consistent precipitation. As the island prepares for tropical systems and increased moisture, residents and visitors alike may find this month dynamically transforms the landscape, making it lush and vibrant.
In Rincon, Puerto Rico, September experiences a humidity level of 79%, slightly lower than the summer peak of 80% observed in July and August. This month marks a gradual transition, as humidity typically trends downward from the sweltering summer months into the cooler fall. Throughout the year, humidity remains relatively stable, hovering around the mid to upper seventies, but September's figure suggests a slight decrease, hinting at the gentle onset of drier conditions in the months ahead. Notably, the humidity levels this month closely mirror those of June, indicating the persistent tropical climate that characterizes the region. As October approaches, residents can expect humidity to continue its slow decline, setting the stage for the milder weather of the fall season.
As September rolls into Rincon, Puerto Rico, residents and visitors should brace for extreme UV exposure, with the UV Index holding steady at 13—a trend consistent since May. This means just 10 minutes of unprotected sun exposure can lead to burns, highlighting the importance of sun protection throughout the month. September continues the pattern established in the summer, where high UV levels necessitate caution and preventative measures to enjoy the vibrant coastal environment safely. For ongoing updates on UV levels, check out the comprehensive insights at Rincon UV Index.
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September in Rincon, Puerto Rico, boasts an impressive 316 hours of sunshine, marking it as a time when the summer's warmth gradually gives way to the softer embrace of autumn. This month continues the trend of remarkable sunshine seen from May to August, where hours reached their peak at 361 hours. As the months transition, September maintains a delightful brightness—slightly diminishing from the height of summer but still basking in generous sunlight. Notably, the consistent 316 hours in both September and October suggests a stable weather pattern, perfect for beach lovers and outdoor adventurers alike. Overall, this time of year is ideal for enjoying the vibrant Puerto Rican sunsets while soaking in the sun's lingering rays.
As you plan your visit to Rincon, Puerto Rico in September, you'll be pleased to know that there’s a 57% chance of sunny weather. This month follows the somewhat unpredictable summer months of June, July, and August, which saw lower percentages of sunshine, hovering around the 49% to 50% range. As the year transitions into the fall, the likelihood of sun does see a slight increase from these summer averages, making September a potentially pleasant time to enjoy outdoor activities. Just after September, the probability of sunny days rises further, peaking in the vibrant months of November and December. Overall, while September may not guarantee endless blue skies, it stands as a reasonable choice for catching sun-drenched moments in this beautiful coastal town.
In Rincon, Puerto Rico, September marks a transition with 12 hours of daylight—a continuation of the summer warmth that started in June. As the summer solstice gives way to autumn, the daylight hours gradually decrease, but September still enjoys abundant sunlight, echoing the vibrant energies of July and August. This month perfectly captures the essence of late summer, where the days are still long enough to bask in the sun and explore the natural beauty of the area before the shorter days of fall set in. The steady daylight duration of 12 hours signals a comforting consistency, highlighting the region's tropical climate and inviting residents and visitors alike to relish in the outdoor activities that Rincon has to offer.
September in Rincon, Puerto Rico, brings a gentle breeze with an average wind speed of 3.4 m/s (8 mph), making it one of the calmest months of the year. This slight dip in wind velocity follows the summer months, where winds averaged around 4.0 m/s, providing a refreshing contrast to the hustle and bustle prior. As the island transitions into fall, the wind's soft whispers create a serene ambiance, perfect for beachcombing and enjoying the stunning coastal views. While October sees a slight uptick in wind speed to 3.7 m/s, the overall trend towards calmer winds invites visitors to experience the tranquil beauty of Rincon during this lovely time of year.
Weather in Rincon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rincon, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather patterns. In September, the temperatures remain relatively high, with a minimum of 25°C (78°F) and an average of 28°C (82°F), peaking at 31°C (87°F). This month also features significant rainfall, totaling 141 mm (5.5 in) over 18 days, coupled with high humidity levels at 79%. In comparison, January offers milder temperatures, with a minimum of 23°C (73°F), an average of 25°C (78°F), and a maximum of 28°C (84°F). Precipitation during this month is minimal, with only 16 mm (0.6 in) spread across just 4 days and slightly lower humidity at 76%. For more specific insights on January weather, you can visit Rincon weather in January.
In comparing the weather of September and February, September emerges as the warmer and rainier month. With average temperatures peaking at 28°C (82°F) and reaching a maximum of 31°C (87°F), it also experiences significant rainfall of 141 mm (5.5 in) over 18 days, contributing to a humidity level of 79%. In contrast, February is cooler, featuring average temperatures around 25°C (77°F) with a maximum of 28°C (83°F). Notably, February sees much less precipitation, totaling only 21 mm (0.8 in) over 7 days, and has a lower humidity of 75%. For more details on February weather, you can check out Rincon weather in February.
September and March exhibit notable differences in weather conditions. September typically experiences warmer temperatures, with minimums around 25°C (78°F) and averages hitting 28°C (82°F), peaking at a maximum of 31°C (87°F). In contrast, March features slightly cooler temperatures, starting at a minimum of 22°C (73°F), averaging 25°C (77°F), and reaching a maximum of 28°C (83°F). Additionally, September is marked by higher precipitation, totaling 141 mm (5.5 in) over 18 days, while March sees much less rainfall, with only 38 mm (1.5 in) across 11 days. Humidity levels are also higher in September at 79%, compared to 74% in March. For more details on March weather conditions, you can check Rincon weather in March.
In comparing the weather between September and April, September is notably warmer with average temperatures reaching 28°C (82°F) compared to April's 26°C (78°F). Additionally, September experiences higher maximum temperatures, peaking at 31°C (87°F) versus April's 29°C (84°F). Rainfall is significantly greater in September, with 141 mm (5.5 in) of precipitation over 18 days, whereas April sees only 39 mm (1.5 in) across 12 days. Humidity levels are also slightly higher in September at 79%, compared to 75% in April. For more detailed information on April weather in Rincón, you can visit Rincon weather in April.
In September, the weather tends to be warmer and more humid compared to May, with average temperatures reaching 28°C (82°F) and highs of 31°C (87°F). In contrast, May experiences slightly cooler temperatures, averaging 26°C (80°F) with a maximum of 29°C (85°F). September also sees significantly more rainfall, with 141 mm (5.5 in) over 18 days, while May has just 49 mm (1.9 in) of precipitation across 14 days. Additionally, humidity levels are higher in September at 79% compared to 75% in May. For a more detailed look at the weather in May, you can visit Rincon weather in May.
In comparing the weather between September and June, September tends to be slightly warmer, with average temperatures reaching 28°C (82°F) compared to June's 27°C (81°F). Both months experience high humidity, but September sees a marginally higher level at 79% versus June's 77%. Additionally, September is marked by significantly greater precipitation, averaging 141 mm (5.5 in) over 18 days, while June has only 48 mm (1.9 in) across 14 days. This increased rainfall in September may create a more humid atmosphere compared to the drier conditions typically found in June. For more specific details about June weather, you can visit Rincon weather in June.
In comparing the weather of September and July, both months feature similar average temperatures, with minimums of 25°C (78°F) and maximums reaching up to 31°C (87°F for September and 88°F for July). However, September sees significantly higher precipitation, totaling 141 mm (5.5 in) over 18 days, compared to July's more moderate 69 mm (2.7 in) over 15 days. Additionally, both months have high humidity levels, with September slightly lower at 79% versus July's 80%. For a detailed look at July weather patterns, visit Rincon weather in July.
In comparing the weather between August and September, we see that both months share similar temperature ranges, with minimums around 25°C (77°F to 78°F) and averages peaking at 28°C (82°F). However, September experiences higher precipitation at 141 mm (5.5 in), spread over 18 days, compared to August's 64 mm (2.5 in) over 15 days. Additionally, September has a slightly lower humidity level at 79%, while August maintains a humidity of 80%. For those interested in a more detailed look at August’s weather conditions, you can visit Rincon weather in August.
September and October exhibit relatively similar weather patterns, but October tends to be slightly drier and cooler. In September, temperatures hover between a minimum of 25°C (78°F) and a maximum of 31°C (87°F), with an average of around 28°C (82°F). The month sees significant rainfall, accumulating to 141 mm (5.5 in) over 18 days, accompanied by a high humidity level of 79%. In contrast, October maintains similarly warm temperatures, with a minimum of 25°C (77°F) and a maximum reaching 31°C (88°F), but the average dips slightly to 27°C (81°F). Notably, precipitation decreases to 71 mm (2.8 in) across 14 days, and humidity remains slightly lower at 78%. For a detailed comparison, you can check Rincon weather in October.
In September, temperatures are slightly warmer, with minimums around 25°C (78°F) and average highs reaching 31°C (87°F). The month also experiences significant rainfall, totaling 141 mm (5.5 in) over 18 days, contributing to a humidity level of 79%. In contrast, November sees a slight decrease in temperatures, with an average of 27°C (80°F) and maximums of 30°C (86°F). Precipitation is much lower at 66 mm (2.6 in) over 13 days, resulting in a marginally lower humidity of 78%. For more details on the weather specifics for November, you can check Rincon weather in November.
In September, temperatures are warmer, ranging from a minimum of 25°C (78°F) to a maximum of 31°C (87°F), with an average of 28°C (82°F). The month also experiences considerable rainfall, totaling 141 mm (5.5 in) over 18 days, and tends to have a high humidity level of 79%. In contrast, December presents a milder climate with temperatures dropping slightly, with a minimum of 23°C (74°F) and a maximum of 29°C (84°F), averaging 26°C (79°F). Precipitation is significantly lower in December, totaling only 19 mm (0.8 in) over 4 days, and humidity decreases slightly to 76%. For more detailed insights on December weather, you can refer to Rincon weather in December.
September in Rincon is characterized by warm temperatures that hover close to average highs of 28°C (82°F) and lows of 25°C (78°F), making it one of the warmer months of the year. However, this warmth comes with a notable increase in precipitation, which often results in humid conditions that can bring relief from the heat but also lead to an average of 18 rainy days. The 79% humidity level often creates a tropical ambiance, distinct from the dryer months ahead. Travelers may want to prepare for occasional showers while enjoying the lush beauty that September's rain fosters. For a deeper understanding of the weather patterns throughout the year, visit Rincon Climate.