Last updated: August 31, 2025
Experience the tropical allure of Cap Estate, Saint Lucia in September, where temperatures range from a comfortable 25°C (76°F) to a sizzling 32°C (90°F), with an inviting average of 28°C (83°F). While the month is characterized by its lush greenery, be prepared for occasional showers, as 121 mm (4.8 in) of rainfall graces the area over 19 days, maintaining the island's vibrant ecosystem. Humidity hovers around a balmy 80%, enhancing the sultry atmosphere that makes September a quintessential time to enjoy the natural beauty and serene landscapes of this Caribbean gem.
In September, Cap Estate, Saint Lucia, experiences a noticeable warmth as temperatures rise. The minimum temperature settles at a comfortable 25°C (76°F), while daytime highs reach a peak of 32°C (90°F). This month marks a gradual shift as the average temperature of 28°C (83°F) reflects the island's late summer climate, while remaining consistent with the warmer trends observed in the preceding months. As the season transitions into fall, expect balmy days perfect for exploring the stunning beaches and lush landscapes that Saint Lucia has to offer. Overall, September tends to balance the warmth of summer with the refreshing breezes of the upcoming autumn, making it an inviting time to visit.
In September, Cap Estate, Saint Lucia, experiences a noticeable spike in precipitation, accumulating 121 mm (4.8 in) over 19 days. This marks a crescendo in the wet season, building on the already substantial rainfall from previous months like August, which saw 113 mm (4.5 in). As summer transitions to autumn, the frequency of rainfall days increases, reflecting a pattern of heightened moisture that sets the stage for the coming months. With October poised to follow closely with 128 mm (5.1 in), it’s evident that September is part of an ongoing trend of elevated precipitation, making it a crucial month for nurturing the lush, vibrant landscapes of this Caribbean paradise.
September in Cap Estate, Saint Lucia, is characterized by moderate humidity levels, consistently at 80%. This places it on par with the previous months of May and March, revealing a trend of relative humidity stability throughout the early autumn. Following a peak in humidity during July at 84%, September offers a slight respite, transitioning towards the more humid months later in the year, such as October and November, which see levels rising again to 82% and 83% respectively. Overall, the data suggests that while humidity fluctuates seasonally, September maintains a comfortable balance that invites visitors to enjoy the island's natural beauty without the oppressive stickiness.
In September, Cap Estate, Saint Lucia experiences a UV Index of 14, placing it firmly in the extreme exposure category with a perilously short burn time of just 10 minutes. This trend of high UV levels stretches across the summer months, peaking along with the Caribbean sun in July and August. Notably, September continues this intense UV exposure backdrop, reflecting a consistent pattern observed since February. As the year progresses into October, the UV Index begins to taper slightly but remains a notable 12. For sun lovers and outdoor enthusiasts, awareness and protection are crucial this time of year; you can find detailed information on UV levels here: Cap Estate UV Index.
UV Risk Categories
As the sun bathes Cap Estate in vibrant hues, September offers a delightful continuation of summer's warmth with 319 hours of sunshine. This month stands out as a dazzling transition from the sun-drenched summer, with May peaking at 355 hours, and seamlessly leads into the mellow light of autumn. With sunshine hours slightly dipping from August's robust 346 hours, September still maintains a bright allure, reinforcing the region's reputation for abundant sunlight year-round. The gentle shift exemplifies a harmonious balance, where the lingering rays of summer gracefully mingle with the promise of the coming fall, making it an ideal time for visitors to revel in the tranquil beauty of this Caribbean paradise.
In September, Cap Estate, Saint Lucia, offers a 51% chance of sunny weather, making it a relatively bright month in the lead-up to the more sun-drenched weeks of late autumn. This figure stands out against the backdrop of summer's often moody skies, where the chance of sunshine dips to 29% in June and hovers around 46% in July and August. As autumn approaches, the likelihood of sunny days gradually climbs, peaking again with higher percentages in October (47%) and November (58%). This trend suggests that while September may experience some lingering clouds, visitors can still look forward to a delightful mix of sunshine and rain, perfectly suited for those who seek both relaxation and adventure in the lush surroundings of Saint Lucia.
In Cap Estate, Saint Lucia, the September daylight duration maintains a consistent pattern that characterizes this tropical paradise. With 12 hours of daylight, September aligns seamlessly with the months of March through August, showcasing the region's steady exposure to sunlight during the warmer part of the year. Following this, as October approaches, daylight begins to dwindle, tapering to 11 hours, reminiscent of January and February's shorter days. This gradual ebb and flow highlights a harmonious transition between seasons, inviting residents and visitors alike to bask in the vibrant beauty of the island's sun-soaked days.
As autumn approaches, September in Cap Estate, Saint Lucia brings a noticeable lull in the winds, with average gusts dropping to a gentle 3.9 m/s (9 mph). This period marks the year's most tranquil breezes, following the relatively brisk winds of the summer months, where speeds lingered around 5.1 to 7.3 m/s (11 to 16 mph) from May to August. As the island transitions into October, a slight uptick in wind speeds resumes, averaging 5.6 m/s (13 mph), hinting at the return of more invigorating breezes as the season shifts. This pattern reflects the natural ebb and flow of weather in Cap Estate, offering a serene backdrop for both relaxation and exploration amidst the lush landscapes.
Weather in Cap Estate varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Cap Estate, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is notably warmer, with temperatures ranging from a minimum of 25°C (76°F) to a maximum of 32°C (90°F) and an average of 28°C (83°F). This month experiences significant rainfall, totaling 121 mm (4.8 in) spread over 19 days, contributing to a humid atmosphere with 80% humidity. In contrast, January offers slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 30°C (86°F), averaging 26°C (78°F). The precipitation in January is much lower at 36 mm (1.4 in) over 15 days, and humidity remains high at 81%. For a detailed look at January conditions, you can visit Cap Estate weather in January.
September and February exhibit distinct weather patterns despite having similar humidity levels of 80%. In September, temperatures range from a minimum of 25°C (76°F) to a maximum of 32°C (90°F), with an average of 28°C (83°F). This month is characterized by higher precipitation, totaling 121 mm (4.8 in) over 19 days. In contrast, February experiences cooler temperatures, with a minimum of 21°C (71°F) and a maximum of 30°C (86°F), averaging 25°C (78°F). Additionally, February has significantly less rainfall, with only 33 mm (1.3 in) occurring over 12 days. For more details on the weather conditions in February, you can check Cap Estate weather in February.
September and March showcase distinct weather patterns in the region. In September, the temperatures range from a minimum of 25°C (76°F) to a maximum of 32°C (90°F), with an average of 28°C (83°F). This month is characterized by higher precipitation, totaling 121 mm (4.8 in) across 19 days, and consistent humidity at 80%. In contrast, March features slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 30°C (85°F), leading to an average of 26°C (79°F). Precipitation is significantly lower in March at 38 mm (1.5 in) over 15 days, while humidity remains constant at 80%. For more insights on the weather specifics during March, you can visit Cap Estate weather in March.
When comparing September and April weather, September tends to be warmer and wetter. In September, temperatures range from a minimum of 25°C (76°F) to a maximum of 32°C (90°F), while April sees slightly cooler temperatures, with a minimum of 23°C (73°F) and a maximum of 31°C (87°F). Additionally, September experiences significantly higher precipitation, averaging 121 mm (4.8 in) over 19 days, compared to April's 35 mm (1.4 in) over 14 days. Humidity levels are relatively similar, with September at 80% and April at 79%. For more details on April weather, you can check the following link: Cap Estate weather in April.
In comparing the weather patterns of September and May, both months experience high humidity levels of around 80%, creating a warm and tropical atmosphere. September tends to be slightly warmer, with average temperatures ranging from a minimum of 25°C (76°F) to a maximum of 32°C (90°F), whereas May offers a cooler range with a minimum of 23°C (74°F) and a maximum of 31°C (88°F). Additionally, September sees significantly more rainfall, accumulating 121 mm (4.8 in) over 19 days, compared to May's much drier conditions with only 39 mm (1.6 in) over 13 days. For more detailed information, you can check Cap Estate weather in May.
In comparing the weather of September and June, we notice that September tends to be slightly warmer, with average temperatures reaching 28°C (83°F) compared to June's average of 27°C (81°F). Both months experience similar minimum temperatures, but September's maximum temperature can go up to 32°C (90°F) versus June's 31°C (88°F). In terms of precipitation, September is significantly wetter, receiving 121 mm (4.8 in) over 19 days, while June has only 65 mm (2.6 in) over 16 days. Humidity levels are relatively high in both months, with September at 80% and June at 83%. For more detailed information on June's weather, you can visit Cap Estate weather in June.
In comparing the weather between September and July, September tends to be slightly warmer with average temperatures reaching 28°C (83°F) compared to July's average of 27°C (81°F). While both months experience high humidity, September's levels are marginally lower at 80% versus July's 84%. Additionally, September sees a higher total precipitation of 121 mm (4.8 in) over 19 days, while July has 105 mm (4.1 in) spread across 24 days. This indicates that while both months are characterized by rain, July is somewhat more frequent in its rainy days. For more insights into July weather, you can refer to Cap Estate weather in July.
In comparing the weather of September and August, we can observe some notable similarities and differences. September experiences slightly warmer temperatures, with a minimum of 25°C (76°F) and a maximum of 32°C (90°F), while August tends to be a bit cooler with a minimum of 24°C (76°F) and a maximum of 31°C (89°F). Additionally, the average temperature in September is about 28°C (83°F), which is nearly on par with August's average of 28°C (82°F). However, September sees a higher level of precipitation at 121 mm (4.8 in) over 19 days, compared to August's 113 mm (4.5 in) across 25 days, indicating a wetter month ahead. Humidity levels remain consistent, with September at 80% and August at 81%. For more detailed insights, you can check out Cap Estate weather in August.
September and October exhibit similar temperature ranges, with September averaging 28°C (83°F) and October slightly cooler at 27°C (81°F). Both months experience high maximum temperatures, reaching up to 32°C (90°F) in September and 32°C (89°F) in October. However, October sees a slight increase in precipitation, with 128 mm (5.1 in) over 21 days compared to September's 121 mm (4.8 in) over 19 days. Additionally, humidity rises slightly from 80% in September to 82% in October, making the atmosphere feel a bit more muggy as the months progress. For more specific weather details, you can check Cap Estate weather in October.
September typically features warmer temperatures with a minimum of 25°C (76°F) and an average of 28°C (83°F), peaking at a maximum of 32°C (90°F). It also experiences significant rainfall, with 121 mm (4.8 in) of precipitation over 19 days and humidity levels around 80%. In contrast, November sees slightly cooler weather with temperatures ranging from a minimum of 24°C (75°F) to an average of 27°C (81°F), reaching a maximum of 31°C (87°F). November has a bit less rainfall at 103 mm (4.1 in) over 21 days and a marginally higher humidity of 83%. For more specific details on November weather, you can visit Cap Estate weather in November.
When comparing the weather in September and December, September tends to be warmer, with average temperatures hovering around 28°C (83°F) and maximums reaching up to 32°C (90°F). In contrast, December experiences slightly cooler conditions, with an average temperature of 26°C (80°F) and maximums at 30°C (86°F). Regarding precipitation, September is much wetter, with 121 mm (4.8 in) of rain over 19 days, while December sees only 46 mm (1.8 in) across 16 days. Both months have high humidity levels, with September at 80% and December slightly higher at 82%. For more detailed weather information, you can visit Cap Estate weather in December.
As September unfolds in Cap Estate, it brings a distinct charm marked by warm temperatures and heightened humidity that set it apart from other months. With an average temperature hovering around 28°C (83°F), the days can feel quite warm, especially as humidity levels reach around 80%. Unlike the drier months, September experiences increased rainfall, with 19 days witnessing precipitation, contributing to a total of 121 mm (4.8 in). This blend of warmth and moisture nurtures the lush landscapes, making Cap Estate a vibrant place during this transitional period. To explore more about the weather patterns throughout the year, visit Cap Estate Climate.