Last updated: August 21, 2025
September in Las Terrenas, Dominican Republic is characterized by warm temperatures and a high humidity level, making for a tropical experience. Daily highs can reach up to a sizzling 35°C (95°F), while the average temperature hovers around a comfortable 28°C (82°F). Nights cool slightly to a minimum of 24°C (75°F), offering some respite from the heat. However, travelers should prepare for considerable precipitation, with about 152 mm (6.0 in) of rain falling over 22 days throughout the month. With humidity levels at approximately 80%, September presents a lush and vibrant environment, ideal for those looking to soak in the beauty of the Caribbean while embracing the tropical climate.
In September, Las Terrenas, Dominican Republic, showcases a warm tropical climate, with temperatures reflecting the peak of summer. The average daily temperature stabilizes at a comfortable 28°C (82°F), while minimums and maximums range from 24°C (75°F) to an impressive 35°C (95°F). This month marks a slight rise from August's averages, signifying a transition toward the end of the hot season. Travelers can expect humid days that radiate sunshine, perfect for enjoying the pristine beaches. As September progresses, the warmth persists, inviting both relaxation and adventure amidst the lush landscapes and vibrant culture of this stunning coastal destination.
September brings a notable surge in precipitation to Las Terrenas, Dominican Republic, with 152 mm (6.0 in) of rainfall over an average of 22 days. This marks a significant increase compared to the preceding months, where rainfall typically hovers around 90 mm. The extended rainy season peaks in September, inviting lush greenery and vibrant landscapes but also prompting visitors to be prepared for frequent showers. Following September's deluge, rainfall levels drop in October yet remain relatively high at 111 mm (4.4 in). This trend underscores the region's transition from the wettest month to slightly drier conditions, while still embracing the tropical charm that attracts travelers year-round.
In September, Las Terrenas experiences humidity levels that mirror the steamy highs of August, consistently sitting at 80%. As the summer months draw to a close, the lingering warmth keeps humidity elevated, making for a tropical atmosphere. This year-round trend shows a gradual increase from a low of 71% in March, peaking during the summer with notable spikes in July and August. Following September, humidity dips slightly to 79% in October, indicating a subtle shift as autumn beckons while still retaining that characteristic Caribbean lushness. The consistent humidity throughout the year highlights the region's tropical charm, providing an enchanting backdrop for visitors.
In September, Las Terrenas experiences a notably high UV Index of 13, falling into the extreme exposure category. With a burn time of just 10 minutes, this trend of elevated UV levels is consistent from April through September, indicating a period where sun protection is crucial for all outdoor activities. This extreme UV exposure mirrors the peak levels seen in the preceding summer months, emphasizing the need for vigilant sun safety measures. As the season shifts into October, there is a slight decrease to an index of 11, but visitors and locals alike should remain cautious. To stay informed on daily conditions, check out the detailed information at Las Terrenas UV Index.
UV Risk Categories
As summer transitions to autumn, September in Las Terrenas boasts a delightful 317 hours of sunshine, making it a vibrant month for outdoor enthusiasts. The sun-soaked days of September are a modest yet welcome dip compared to the peak, 356 hours in July, illustrating the gradual shift toward less intense sunlight. Despite this decrease, September still enjoys significantly more sunshine than the winter months, with 291 hours in November. This abundant sunshine not only enhances the stunning beaches but also provides the perfect backdrop for exploring the lush landscapes, ensuring visitors can soak in the natural beauty of the Dominican Republic.
In September, Las Terrenas enjoys a 48% chance of sunny weather, aligning closely with the month's average of 44-54% seen from the preceding months. While the summer months may show a dip in sunshine, September presents a welcome return to more favorable conditions, making it a great time for beach lovers to visit. This slight uptick in sunlight follows the annual pattern where late months like November and December hit peaks at 61% and 60%, respectively. As the rains of summer fade, visitors can expect more opportunities to bask in the sun and enjoy the breathtaking coastal scenery.
As September arrives in Las Terrenas, the daylight duration begins to taper off, offering approximately 12 hours of sunlight each day. This marks a slight decline from the peak of 13 hours experienced during the summer months of May through July. With a consistent rhythm throughout the year, the daylight hours pulse with the changing seasons, transitioning smoothly from the long summer days to the shorter autumn and winter. September serves as a gentle reminder of nature's cycles, balancing pleasure and preparation as days gradually shrink toward the rest of the year.
In September, the winds of Las Terrenas take a gentle turn, with an average speed of just 2.1 m/s (5 mph), marking the lowest point of the year. This calmness contrasts with the breezier months that precede it, where winds typically range from 3.0 to 3.8 m/s (7 to 9 mph) from January through August. As summer transitions into autumn, it becomes evident that the tropical charm of the Dominican Republic is accentuated by these softer breezes, inviting visitors to bask in the tranquil ambiance. The gradual decline in wind speed continues into October at 2.2 m/s, suggesting a seasonal shift where the lush landscapes are gently caressed by the passing winds, creating a serene backdrop for leisurely adventures along the pristine shoreline.
Weather in Las Terrenas varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Las Terrenas, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in September to January, notable differences emerge. September tends to be much warmer, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 35°C (95°F). Conversely, January offers cooler conditions, with temperatures starting at a minimum of 17°C (63°F) and peaking at 32°C (90°F). Additionally, September experiences significantly more rainfall, averaging 152 mm (6.0 in) over 22 days, while January sees only 46 mm (1.8 in) over 13 days. The humidity remains relatively high in both months, though it is slightly lower in January at 74%, compared to September’s 80%. For a detailed look at January weather in Las Terrenas, you can refer to Las Terrenas weather in January.
In September, temperatures are significantly warmer, with a minimum of 24°C (75°F) and an average of 28°C (82°F), peaking at 35°C (95°F). The month also sees considerable rainfall, averaging 152 mm (6.0 in) over 22 rainy days, combined with a high humidity level of 80%. In contrast, February's weather is milder, featuring a minimum temperature of 20°C (67°F) and an average of 25°C (77°F), with a maximum of 31°C (89°F). February experiences much less precipitation, with only 45 mm (1.8 in) over 15 days, and lower humidity at 73%. For more detailed insights into February's climate, visit Las Terrenas weather in February.
In September, temperatures tend to be higher, with a minimum of 24°C (75°F) and an average of 28°C (82°F), peaking at 35°C (95°F). The month experiences significant rainfall, with 152 mm (6.0 in) over 22 days, contributing to a high humidity level of 80%. In contrast, March offers more mild conditions, featuring a minimum temperature of 18°C (65°F) and an average of 25°C (77°F), reaching a maximum of 33°C (91°F). Precipitation is also lower in March, totaling 95 mm (3.7 in) across 17 days, and humidity is reduced to 71%. For more detailed information on March weather, you can visit Las Terrenas weather in March.
September and April present distinct contrasts in weather patterns. September typically experiences warmer temperatures, with a minimum of 24°C (75°F) and an average of 28°C (82°F), leading up to highs of 35°C (95°F). However, this month also brings significant rainfall, with 152 mm (6.0 in) spread over 22 days and higher humidity at around 80%. In contrast, April offers a slightly cooler climate, featuring a minimum temperature of 20°C (68°F) and an average of 26°C (79°F), with maximum temperatures reaching 34°C (94°F). April is much drier, with only 54 mm (2.1 in) of precipitation over 13 days and lower humidity levels at 72%. For a detailed look at this month’s weather, check out Las Terrenas weather in April.
In comparing the weather of September and May, both months feature warm temperatures, with September showing a slightly higher average, peaking at 28°C (82°F) compared to May's 27°C (81°F). Notably, September experiences more precipitation, totaling 152 mm (6.0 in) over 22 days, while May receives only 94 mm (3.7 in) over 18 days, indicating a wetter climate during the former month. Humidity levels also differ, with September at a higher 80% compared to May's 72%, making September feel more muggy. For a detailed look at May's weather specifics, you can check out Las Terrenas weather in May.
Both September and June feature warm temperatures with average highs around 28°C (82°F), but September tends to be slightly warmer at times with maximum temperatures reaching 35°C (95°F) compared to June's maximum of 34°C (93°F). In contrast to June, which sees less rainfall and humidity at 65 mm (2.6 in) and 73% respectively, September is markedly wetter with 152 mm (6.0 in) of precipitation and higher humidity at 80%. While both months experience a significant number of rainy days, September has four more than June, making it a more humid and rainy time of the year. For more detailed weather insights, you can check Las Terrenas weather in June.
In comparing the weather of September and July, both months have similar average temperatures, with September reaching a minimum of 24°C (75°F) and a maximum of 35°C (95°F), while July sees slightly cooler temperatures ranging from a minimum of 23°C (74°F) to a maximum of 34°C (94°F). However, September is characterized by significantly higher precipitation, with 152 mm (6.0 in) spread over 22 days, compared to July's 81 mm (3.2 in) over 19 days. Additionally, September exhibits higher humidity levels at 80%, compared to July's 78%. For more detailed insights, you can check Las Terrenas weather in July.
In comparing the weather between August and September, both months experience similar average temperatures, with August averaging 28°C (83°F) and September at 28°C (82°F). However, September sees slightly higher maximum temperatures, reaching up to 35°C (95°F) compared to August's 34°C (94°F). Notably, September is significantly wetter, receiving 152 mm (6.0 in) of precipitation over 22 days, while August has only 92 mm (3.6 in) over 19 days. Humidity levels remain constant at 80% for both months, contributing to a warm and muggy atmosphere. For more details on August weather specifically, check out Las Terrenas weather in August.
In September, the weather tends to be warmer, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 35°C (95°F) and an average temperature of 28°C (82°F). This month experiences significant rainfall, totaling 152 mm (6.0 inches) over 22 days, while humidity hovers around 80%. In contrast, October brings slightly cooler temperatures, with a minimum of 22°C (73°F), an average of 27°C (81°F), and a maximum of 33°C (92°F). Additionally, October sees reduced precipitation at 111 mm (4.4 inches) over the same number of rainy days, and a marginally lower humidity of 79%. For a detailed overview of October weather, you can check out Las Terrenas weather in October.
In September, the weather is typically warmer and more humid, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 35°C (95°F) and an average of 28°C (82°F). The month also sees significant rainfall, averaging 152 mm (6.0 in) over 22 days. In contrast, November brings slightly cooler temperatures, with a minimum of 21°C (70°F) and a maximum of 33°C (92°F), averaging 26°C (80°F). Precipitation decreases to 110 mm (4.3 in) over 17 days, and humidity remains fairly high at 79%. For more detailed insights into the weather during this month, check out Las Terrenas weather in November.
In September, the weather is characterized by warmer temperatures, with minimums around 24°C (75°F) and maximums reaching up to 35°C (95°F). The month experiences considerable rainfall, totaling 152 mm (6.0 in) over 22 days, and humidity levels are high at 80%. In contrast, December brings slightly cooler temperatures, with a minimum of 20°C (68°F) and a maximum of 32°C (90°F). Precipitation decreases significantly to 57 mm (2.2 in), spread over 17 days, while humidity remains relatively low at 77%. Overall, December offers a more pleasant climate for outdoor activities compared to the humid and rainy conditions often found in September. For more details, check out Las Terrenas weather in December.
As September rolls into Las Terrenas, travelers can expect a warm and humid tropical climate that stands out from the drier months. The average temperature stays comfortably high, providing plenty of sunshine, yet with significantly increased rainfall as the region experiences more than 20 days of precipitation. This combination of warmth and moisture contributes to a lush landscape, making it a unique time to appreciate the island's natural beauty. While the rains may offer a refreshing break from the heat, they can also be unpredictable. For more detailed insights into this enchanting destination's weather throughout the year, check out Las Terrenas Climate.