Last updated: August 21, 2025
In Limon, Costa Rica, September brings a warm tropical climate characterized by an average temperature of 27°C (80°F), with daily highs reaching up to 30°C (86°F) and lows around 24°C (76°F). This coastal city experiences a notable amount of rainfall, accumulating approximately 182 mm (7.2 in) over the month, spread across 27 days of precipitation. The humidity level remains high at 81%, creating a lush, vibrant environment that defines this beautiful region. Whether you're a nature enthusiast or a cultural explorer, September in Limon offers a unique blend of warmth and vitality, perfect for experiencing Costa Rica's natural beauty.
In September, Limon, Costa Rica experiences warm and inviting temperatures that make it an appealing destination for travelers seeking tropical comfort. With a minimum of 24°C (76°F) and a maximum reaching up to 30°C (86°F), the weather remains consistently warm throughout the day. The average temperature hovers around 27°C (80°F), creating a pleasant climate perfect for exploring local attractions or relaxing on the beach. As September is part of the rainy season, you can expect intermittent showers, but these also bring lush greenery and vibrant landscapes, enhancing the region's natural beauty. Overall, the temperatures in September reflect a seamless transition from the slightly cooler months earlier in the year, establishing a cozy atmosphere for enjoying all that Limon has to offer.
September in Limon, Costa Rica, experiences a notable shift in precipitation patterns, receiving 182 mm (7.2 in) of rain over 27 days. While this marks a decrease from the peak rainy months of July and August, the tropical climate still ensures a significant amount of moisture, contributing to the region’s lush landscapes. Notably, September serves as a transitional month before the heavier rains of October and November, which often bring an additional surge of precipitation, averaging around 290 mm (11.4 in) and 367 mm (14.5 in), respectively. This consistent rainfall, with September’s moderate totals, underscores Limon's characteristic tropical wet season, where the lush greenery thrives, setting a vibrant stage for the natural beauty of Costa Rica.
In September, Limon, Costa Rica, experiences a notable humidity level of 81%, which is slightly lower than the peak recorded in the summer months of June (84%) and July (85%). The trend throughout the year reveals a gradual increase in humidity as the seasons change, with early months like January and February maintaining a more comfortable 68%. By the time September rolls around, the city is well into its wet season, resulting in a noticeable uptick in moisture levels. Fortunately, as the year approaches its end, humidity gradually decreases, settling to 80% in both October and November, allowing for some respite before the cycle begins anew in the following year.
September in Limon, Costa Rica, continues the trend of extreme UV exposure seen throughout the year, with a UV Index of 13. This consistent level underscores the region's need for vigilant sun protection, as the burn time remains a brisk 10 minutes. As the rainy season starts to taper off, the UV index indicates only a slight drop from the peak levels observed during the earlier months of the year. Travelers and locals alike should be mindful of these conditions and take precautions, ensuring that their time under the sun is safe and enjoyable. For detailed insights on UV levels throughout the year, visit Limon UV Index.
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September in Limon, Costa Rica, offers a delightful average of 283 hours of sunshine, striking a harmonious balance amid the tropical climate. This month sees a slight dip in sunlight compared to the vibrant days of March and April, which boast the highest totals of 330 and 313 hours, respectively. However, September maintains a solid position above many summer months like July and August, which feature fewer sun-drenched hours. As the rainy season approaches its peak, the sunny moments become even more cherished, making September a lovely time to enjoy the lush surroundings of this coastal paradise. With November and December not far behind in sunshine totals, September serves as a gentle transition, reminding visitors of Limon's vibrant beauty and inviting warmth as the year shifts forward.
In Limon, Costa Rica, September is characterized by a notably low likelihood of sunny weather, with only a 16% chance of sunshine gracing the region. This trend reflects a broader pattern as the rainy season takes its hold, significantly reducing the chances of clear skies compared to the sunnier months earlier in the year. Following the peaks of January and February, which enjoy probabilities of around 42-44%, the likelihood of sunshine steadily declines, reaching a low in August at a mere 10%. Though October and November see a slight uptick, they remain well below the threshold of early months, making September one of the least favorable times for sun-seekers in this vibrant tropical locale.
In Limon, Costa Rica, September marks a continuation of the region's stable and pleasant daylight pattern, offering a consistent 12 hours of daylight. This month falls into the midst of a trend where the daylight duration holds steady from April through August, providing ample time to enjoy the lush surroundings and vibrant culture. As the year progresses into October, the daylight gradually decreases back to 11 hours, reflecting the slight seasonal shifts typical of tropical climates. This balance of sunlight not only enhances outdoor activities but also supports the rich biodiversity that characterizes this beautiful coastal area.
In September, the winds in Limon, Costa Rica, settle back into a gentle rhythm, with an average speed of 1.7 m/s (4 mph). This slight dip follows a summer of gradual increases, peaking in August at 2.1 m/s (5 mph). The trend reveals a seasonal ebb and flow, as the typically calm winds of the early months mirror those of September, bringing a serene atmosphere that encourages relaxation amid the lush surroundings. As the year progresses, a noticeable uptick occurs in November, with winds rising to 2.5 m/s (6 mph), suggesting the approach of drier conditions. Thus, September presents a tranquil interlude, perfectly poised between the warmth of summer and the briskness of autumn winds.
Weather in Limon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Limon, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present distinct weather profiles. 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 (80°F). This month experiences significant rainfall, totaling 182 mm (7.2 in) over 27 days, accompanied by high humidity at 81%. In contrast, January features slightly cooler temperatures, with a minimum of 22°C (71°F), an average of 25°C (77°F), and a maximum of 28°C (83°F). Although it sees more rain in total—210 mm (8.2 in)—it has fewer rainy days at 20, resulting in lower humidity levels at 68%. For more detailed information, you can check Limon weather in January.
September and February present distinct weather patterns. September tends to be warmer, with average temperatures around 27°C (80°F), peaking at a maximum of 30°C (86°F), while February sees slightly cooler temperatures, averaging 25°C (78°F) and reaching a maximum of 28°C (83°F). Additionally, September is much wetter, experiencing 182 mm (7.2 in) of precipitation over 27 days, compared to February's 96 mm (3.8 in) across 18 days. This results in a significantly higher humidity level in September at 81%, contrasted with a more comfortable 68% in February. For more detailed information on February's weather, check out Limon weather in February.
September and March exhibit notable differences in weather patterns. September tends to be warmer, with average temperatures ranging from a minimum of 24°C (76°F) to a maximum of 30°C (86°F), while March’s temperatures are slightly cooler, averaging from 22°C (72°F) to 28°C (83°F). Additionally, September is wetter, receiving 182 mm (7.2 in) of precipitation over 27 days, in contrast to March, which experiences only 115 mm (4.5 in) of rain across 23 days. Humidity levels also differ significantly, with September averaging 81%, compared to March's more comfortable 66%. For more detailed information about March weather, you can check Limon weather in March.
In September, the weather tends to be warmer and more humid compared to April, with minimum temperatures reaching 24°C (76°F) and an average of 27°C (80°F). The maximum temperature can climb up to 30°C (86°F), coupled with significant rainfall of 182 mm (7.2 in) over 27 days, resulting in a high humidity level of 81%. In contrast, April sees slightly cooler temperatures, with a minimum of 23°C (73°F) and an average of 26°C (79°F), peaking at 29°C (84°F). Rainfall in April is also less, totaling 119 mm (4.7 in) across 22 days, with a lower humidity of 67%. For more detailed information about April weather, you can check Limon weather in April.
Both September and May in Limon share similar average temperatures, with minimums at 24°C (76°F), averages at 27°C (80°F), and maximums at 30°C (86°F). However, the weather differs significantly in precipitation and humidity. September experiences 182 mm (7.2 in) of rainfall over 27 days, accompanied by higher humidity at 81%. In contrast, May sees a much greater precipitation level of 321 mm (12.7 in), also spread over 27 days, but with lower humidity at 69%. For more detailed information, you can check Limon weather in May.
When comparing the weather between September and June, it's clear that both months share similar temperature ranges, with minimums of 24°C (76°F), averages of 27°C (80°F), and maximums of 30°C (86°F). However, September tends to be slightly drier, receiving 182 mm (7.2 in) of precipitation over 27 days, compared to June's 266 mm (10.5 in) across 28 days. Humidity levels are also similar, with September at 81% and June at 84%, indicating that both months are characterized by a tropical climate. For more detailed insights into June weather in Limon, you can check this link: Limon weather in June.
In comparing the weather of September and July, both months exhibit warm temperatures, with September having slightly higher averages. September's temperatures range from a minimum of 24°C (76°F) to a maximum of 30°C (86°F), averaging around 27°C (80°F). In contrast, July sees a slightly lower average temperature, with a range of 24°C (76°F) to 29°C (85°F) and an average of 26°C (79°F).
However, July is notable for its higher precipitation levels, receiving 385 mm (15.2 in) of rainfall over 30 days, compared to September's 182 mm (7.2 in) across 27 days. Additionally, humidity is slightly higher in July at 85%, compared to September's 81%. For more detailed information on July weather, visit Limon weather in July.
In comparing the weather of September and August, both months exhibit relatively warm temperatures, with minimums hovering around 24°C (75-76°F) and maximums reaching 30°C (86°F). However, September experiences slightly higher average temperatures, averaging 27°C (80°F), compared to August's 26°C (80°F). Notably, September has less precipitation, totaling 182 mm (7.2 in) over 27 days, while August is much wetter with 302 mm (11.9 in) across 28 days. Humidity remains high in both months, with September at 81% and August slightly higher at 82%. For a more detailed climate comparison, you can check Limon weather in August.
In both September and October, temperatures remain consistent, with minimums of 24°C (76°F), average highs of 27°C (80°F), and maximums reaching 30°C (86°F). However, October experiences significantly more precipitation, totaling 290 mm (11.4 in) compared to September's 182 mm (7.2 in), despite both months witnessing rain on 27 days. Humidity levels are also similar, with September at 81% and October slightly lower at 80%. For more detailed information on October weather, you can visit Limon weather in October.
In September, the weather features a warm temperature range with a minimum of 24°C (76°F), averaging around 27°C (80°F) and reaching up to 30°C (86°F). This month also experiences considerable rainfall, with a total precipitation of 182 mm (7.2 in) over 27 days and humidity levels at 81%.
In contrast, November sees slightly cooler temperatures, with a minimum of 24°C (75°F), an average of 26°C (79°F), and a maximum of 29°C (85°F). However, it is notably wetter, as it receives a total of 367 mm (14.5 in) of rainfall spread across 28 days while maintaining a similar humidity level of 80%. For a more detailed look at November's weather conditions, check out Limon weather in November.
In September, temperatures are warm with a minimum of 24°C (76°F) and an average of 27°C (80°F), reaching a maximum of 30°C (86°F). The month is characterized by significant precipitation, totaling 182 mm (7.2 in) over 27 days, alongside high humidity at 81%. In contrast, December sees slightly cooler temperatures, with a minimum of 22°C (73°F) and an average of 25°C (78°F), peaking at 29°C (84°F). However, December experiences even higher rainfall, accumulating 315 mm (12.4 in) across 25 days, though the humidity is lower at 72%. For more specific details on December weather, check out Limon weather in December.
September in Limon presents a unique climate experience, characterized by high humidity and significant rainfall, making it one of the wettest months of the year. With an average temperature of around 27°C (80°F), it remains warm, but the incessant 182 mm of precipitation over 27 days adds a distinctive chill to the air. This abundance of moisture contributes to the lush, vibrant landscapes that define the region, contrasting sharply with the drier months. For those who appreciate the beauty of tropical rainforests and the refreshing ambience that comes with this weather, September is a captivating time to explore Limon's charm. To understand more about what to expect throughout the year, check out Limon Climate.