Last updated: August 21, 2025
September in Cahuita, Costa Rica showcases a warm tropical climate, with temperatures reaching a maximum of 30°C (86°F) and hovering around an average of 27°C (81°F). The minimum temperature typically settles at a comfortable 24°C (76°F). This month is characterized by significant rainfall, accumulating to 266 mm (10.5 in) over 27 days, contributing to the region’s lush greenery. With humidity levels soaring to 81%, visitors can experience a vibrant and lush landscape, though they should be prepared for frequent, refreshing showers that define this lively coastal paradise.
In September, Cahuita, Costa Rica, experiences mild yet inviting temperatures that perfectly encapsulate the tropical charm of the region. With a minimum temperature of 24°C (76°F) and a consistent average of 27°C (81°F), visitors can indulge in comfortable days and balmy nights. The highs reach 30°C (86°F), mirroring the warmth of the preceding months while providing a subtly cooler breeze as September ushers in the rainy season. This period showcases not only stable temperatures but also offers a lush, vibrant landscape, making it an ideal time for nature lovers to explore the rich biodiversity within Cahuita National Park.
September in Cahuita, Costa Rica, sees a notable shift in precipitation patterns as the month experiences an average rainfall of 266 mm (10.5 in), closely mirroring January's amounts. This month typically records 27 days of rain, making it part of the wet season that trends heavier as summer transitions into fall. Following the intense deluge of July and August, where 620 mm (24.4 in) and 428 mm (16.9 in) fell respectively, September serves as a slight reprieve, yet continues to contribute significantly to the lush landscape. The consistent rainfall throughout the month ensures that the vibrant flora thrives, keeping Cahuita’s natural beauty alive even during the rainy season.
In Cahuita, Costa Rica, September brings a notable humidity level of 81%, which aligns closely with the higher humidity observed during the previous summer months. Following July and August, where humidity climbs to 85% and 82% respectively, September marks a slight dip yet remains among the higher percentages in the annual cycle. This trend reflects a transitional period as the region shifts from the sultry summer months to the more moderate conditions of October, which sees a drop to 80%. The overall pattern indicates a generally humid tropical climate, peaking in mid-year before gradually easing, suggesting that visitors in September can expect a warm and lush atmosphere characteristic of this vibrant coastal locale.
In September, the UV Index in Cahuita, Costa Rica remains at a striking level of 13, marking it within the extreme exposure category. This consistency with the preceding months, where the Index ranged from 13 to 15, highlights the region's relentless sunshine, necessitating caution when venturing outdoors. With a burn time of just 10 minutes, it's crucial for visitors and locals alike to protect their skin from harmful UV rays. As the year progresses into October and the Index shifts slightly higher, staying informed and prepared is vital. To learn more about the UV exposure trends in this vibrant locale, visit Cahuita UV Index.
UV Risk Categories
September in Cahuita, Costa Rica, enjoys an ideal balance of sunshine, with 280 hours of glorious sunlight—a continuation of the warm and vibrant summer months. As the rainy season unfolds, this consistent sunshine reflects a slight dip compared to the earlier months, yet it maintains a notable warmth that welcomes visitors. Following the height of summer in March with its impressive 331 hours of sunshine, the trend shows a gentle decline through the latter months, but September stands resilient, matching August's luminous days. Travelers can indulge in the tropical beauty, knowing that while clouds may gather, the sun is never far behind in this enchanting coastal haven.
In Cahuita, Costa Rica, September marks a notable dip in the likelihood of sunny weather, with only a 14% chance of sunshine. This month, nestled within the rainy season, contrasts sharply with the cooler months at the beginning of the year, where sunny days frequently rise above 40% in January and February. As spring fades and summer approaches, the chance of clear skies diminishes significantly, plunging to just 9% in August. After September, the trend begins to shift again, with breezy October showing a gradual improvement to 21%, hinting at a slow return to brighter days. Thus, travelers looking for sun should consider planning their trips outside September to fully enjoy Cahuita’s tropical beauty.
In Cahuita, Costa Rica, the progression of daylight duration throughout the year reveals a captivating rhythm of nature. From January to August, residents bask in a consistent 12 hours of daylight, enjoying the sun-drenched days that epitomize tropical living. As September arrives, this generous span of daylight continues, maintaining the 12-hour trend, ensuring that the vibrant natural beauty of the region remains illuminated. However, as the year transitions into October, daylight begins to wane, dipping back to 11 hours. This pattern not only highlights the steady warmth of the tropical climate but also marks the subtle shift towards the cooler months, inviting both locals and visitors to savor every sunlit moment.
In Cahuita, Costa Rica, September brings a gentle touch to the coastal breeze, with an average wind speed of 1.7 m/s (4 mph)—the calmest of the year. This month marks a notable dip in wind intensity after summer, where speeds range from 1.9 to 2.2 m/s from April through August. As the seasons shift towards the end of the year, wind speeds gradually regain strength, peaking in November at 2.8 m/s (6 mph). While September may offer a serene and tranquil atmosphere, it's clear that the winds of Cahuita are gearing up for a revitalizing change in the months to come.
Weather in Cahuita varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Cahuita, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures are slightly warmer, with averages around 27°C (81°F) and peaks reaching up to 30°C (86°F), while January tends to be a bit cooler with an average of 26°C (78°F) and a maximum of 28°C (84°F). Both months experience the same amount of precipitation at 266 mm (10.5 in), but September has more rainy days, totaling 27 compared to January's 20 days. Additionally, the humidity levels are higher in September at 81%, compared to January's relatively lower humidity of 68%. For more details on the weather in January, visit Cahuita weather in January.
In comparing the weather between September and February, September typically offers warmer temperatures with a minimum of 24°C (76°F) and an average of 27°C (81°F), peaking at 30°C (86°F). However, it also brings significant rainfall, totaling 266 mm (10.5 in) over 27 days, accompanied by high humidity levels at 81%. In contrast, February presents slightly cooler conditions, with a minimum of 23°C (73°F) and an average of 26°C (79°F), reaching a maximum of 28°C (83°F). Precipitation in February is notably lower, at 124 mm (4.9 in) across 18 days, with humidity dropping to a more comfortable 68%. For more insights into February weather specifically, visit Cahuita weather in February.
In comparing the weather in September and March, we see some notable differences. September tends to be warmer, with average daily temperatures around 27°C (81°F) and maximums reaching 30°C (86°F), while March shows slightly cooler temperatures, averaging 26°C (79°F) with maximums at 29°C (84°F). Additionally, September experiences significantly more rainfall, totaling 266 mm (10.5 in) over 27 days, compared to March's 137 mm (5.4 in) across 22 days. Humidity levels are also higher in September at 81%, while March enjoys a more comfortable 66%. For more details on March weather in Cahuita, check out this link: Cahuita weather in March.
In September, the weather is characterized by slightly warmer temperatures, with a minimum of 24°C (76°F) and an average of 27°C (81°F), reaching a maximum of 30°C (86°F). However, this month is notably wetter, with 266 mm (10.5 in) of precipitation spread over 27 days, leading to a higher humidity level of 81%. In contrast, April offers similar temperatures with a minimum of 24°C (75°F), an average of 27°C (80°F), and a maximum of 29°C (85°F). The rainfall in April is less intense, totaling 214 mm (8.4 in) over 22 days, and the humidity is lower at 67%. For more details on April weather, you can visit Cahuita weather in April.
When comparing the weather of September and May, both months exhibit similar average temperatures, with September having a minimum of 24°C (76°F) and May starting slightly higher at 25°C (77°F). The maximum temperatures are nearly identical, reaching around 30°C (86°F) in September and 30°C (87°F) in May. However, September experiences significantly more rainfall, with 266 mm (10.5 in) of precipitation over 27 days compared to May's 420 mm (16.5 in) across 28 days. Notably, the humidity levels are higher in September at 81%, while May has a more comfortable 69%. For a detailed look at the weather specifics for this month, you can visit Cahuita weather in May.
In comparing the weather of September and June, both months exhibit similar temperature ranges, with average highs around 30°C (86°F) and averages sitting at 27°C (81°F). However, June tends to be slightly wetter, receiving 378 mm (14.9 in) of precipitation over 29 days, compared to September's 266 mm (10.5 in) over 27 days. Additionally, humidity levels are marginally higher in June at 84% versus September's 81%. For more detailed information, you can check Cahuita weather in June.
When comparing the weather in September and July, both months exhibit similar temperature ranges, with July having a slightly higher minimum temperature of 25°C (76°F) compared to September's 24°C (76°F). The average temperatures remain consistent at around 27°C (80°F to 81°F), and the maximum temperatures peak at 30°C (86°F) for both months. However, September experiences significantly less rainfall with 266 mm (10.5 in) over 27 days, while July sees a much wetter climate, accumulating 620 mm (24.4 in) over 30 days. Additionally, humidity levels are slightly lower in September at 81% versus 85% in July. For more details, you can check out Cahuita weather in July.
In comparing the weather between August and September, both months share similar average temperatures, with a minimum of 24°C (76°F), an average of 27°C (81°F), and a maximum of 30°C (86°F). However, September experiences significantly less rainfall, with 266 mm (10.5 in) compared to August's 428 mm (16.9 in), and fewer rainy days, 27 versus 29. The humidity remains relatively stable, with September at 81% and August slightly higher at 82%. For a more detailed look at August's weather patterns, you can visit Cahuita weather in August.
In September, temperatures are fairly consistent, with a minimum of 24°C (76°F) and a maximum of 30°C (86°F), averaging around 27°C (81°F). However, this month is characterized by significant rainfall, totaling 266 mm (10.5 in) over 27 days, and a humidity level of 81%.
October shares a similar temperature range, maintaining an average of 27°C (81°F) and maxing out at 30°C (86°F). However, it experiences a notable increase in precipitation, with 347 mm (13.7 in) also spread across 27 days, while humidity slightly decreases to 80%. For more detailed insights, check out this link: Cahuita weather in October.
In comparing the weather of September and November, we see that both months maintain similar temperature ranges, with a minimum of 24°C (76°F) and an average around 27°C (81°F). However, November tends to be slightly cooler at a maximum of 29°C (85°F) compared to September's 30°C (86°F). One significant difference is in precipitation; November experiences much heavier rainfall, with 426 mm (16.8 in) over 27 days, compared to September's 266 mm (10.5 in). Additionally, humidity levels remain high in both months, with September at 81% and November slightly lower at 80%. For more detailed information, check out Cahuita weather in November.
September and December exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 30°C (86°F), with an average of 27°C (81°F). The month is characterized by high humidity at 81% and substantial rainfall of 266 mm (10.5 in) spread over 27 days. In contrast, December sees slightly lower temperatures, with a minimum of 23°C (74°F), an average of 26°C (79°F), and a maximum of 29°C (84°F). Although precipitation increases to 391 mm (15.4 in), it occurs over fewer days (24), contributing to a decrease in humidity to 72%. For more specific details on weather conditions, check out Cahuita weather in December.
As you explore Cahuita in September, you'll notice a distinct weather pattern compared to other months. With an average temperature hovering around a comfortable 27°C, this tropical paradise still offers warmth, but be prepared for significantly higher rainfall, experiencing precipitation on nearly every day of the month. Humidity levels remain elevated at 81%, adding a lush vibrancy to the landscape. While the sun may peek through the clouds intermittently, the lush scenery and vibrant wildlife flourish in this wet season. If you're curious about the full scope of weather throughout the year, check out Cahuita Climate.