Last updated: August 31, 2025
Experience the captivating weather of Soufriere, Saint Lucia in September, where tropical warmth envelops the region with maximum temperatures reaching 31°C (88°F) and an average of 28°C (82°F). Visitors can expect a comfortable minimum temperature of 25°C (77°F), making it ideal for both exploration and relaxation. However, with 136 mm (5.4 in) of rainfall spread over 19 days, the lush landscape thrives, offering stunning vistas and vibrant greenery. Despite the rain, the humidity level hovers around 80%, contributing to that quintessential Caribbean feel. Whether you're basking in the sun or enjoying a refreshing shower, September in Soufriere promises a memorable tropical getaway.
In September, Soufrière, Saint Lucia basks in warm tropical bliss, with temperatures typically ranging from a minimum of 25°C (77°F) to a maximum of 31°C (88°F). This month marks a gradual uptick in both average and peak temperatures, with an average of 28°C (82°F), reflecting the transition from summer to autumn. As the sultry summer slowly fades, September's steamy, sunny days and balmy evenings invite visitors to enjoy the vibrant natural beauty of the region. With higher temperatures than the preceding months, adventurers seeking a perfect beach getaway will find that Soufrière offers a perfect backdrop for relaxation and exploration.
September marks a significant peak in precipitation in Soufrière, Saint Lucia, with an impressive 136 mm (5.4 in) of rainfall over 19 days. This surge represents a continuation of the upward trend witnessed since June, where rainfall began to intensify. Following the exceptionally wet months of July and August, September solidifies its place as part of the region's rainiest period. The increase from August's 121 mm (4.8 in) underscores the tropical climate's variability, setting the stage for a transition into the slightly less rain-soaked months of October and November. As the rainy season unfolds, visitors and residents alike can expect the lush landscapes to thrive, albeit with the need to remain prepared for the frequent showers.
September in Soufriere, Saint Lucia, showcases a humidity level of 80%, aligning with the consistent trend observed since the beginning of the year. The month marks a transitional point as humidity levels peak during the summer, reaching their highest in July at 84%. Following this peak, September and the subsequent months display a slight dip, yet remain within a relatively stable range, hovering between 80% and 83%. This pattern suggests that while the summer's warm embrace lingers, a subtle shift towards the drier months is on the horizon as the year progresses. Overall, the humidity in September reflects the tropical climate's characteristic warmth while maintaining a consistent feel reminiscent of the preceding months.
As summer transitions into fall, September in Soufriere, Saint Lucia, maintains an extreme UV Index of 14, mirroring the high levels seen throughout the preceding months. With a burn time of just 10 minutes, the intensity of the sun continues to demand vigilance from both locals and visitors. This trend of elevated UV exposure underscores the importance of sun protection during the peak months of the year, which stretch from February through September. While the index begins to soften in October, September remains a critical time for safeguarding skin against the sun's powerful rays. For more details on UV exposure in this tropical paradise, visit Soufriere UV Index.
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September in Soufriere, Saint Lucia, offers a delightful continuation of the sunshine season, boasting 323 hours of radiant sunlight. While this marks a slight dip compared to the sun-soaked months of May (355 hours) and July (348 hours), it still maintains a warm glow as summer transitions into autumn. This month showcases a consistent, impressive average of sunshine that perfectly complements the island's lush landscapes and vibrant culture. Following a pattern established earlier in the year, sunny September provides an ideal backdrop for leisurely beach days and exhilarating outdoor adventures, solidifying its charm as a preferred time to enjoy this Caribbean paradise.
In Soufriere, Saint Lucia, September offers a moderate 50% chance of sunny weather, making it a delightful time for visitors seeking a balance between sun and occasional tropical showers. As summer transitions into fall, the likelihood of clear skies stands steady, slightly higher than the earlier summer months of June and July, which dip to around 30% and 47%, respectively. This trend indicates that while September doesn't boast the highest sunshine rates—those peak in February with a notable 68%—it still provides a pleasant opportunity for outdoor activities and exploration. With October closely trailing at 48%, travelers can enjoy the tail end of the dry season before the traditionally wetter months ahead, ensuring refreshing yet sunny experiences in this beautiful Caribbean destination.
In September, Soufriere, Saint Lucia enjoys a generous 12 hours of daylight, continuing the trend established throughout the summer months. As the year transitions from the long, sun-soaked days of June through August, daylight hours remain consistent at this mark. This stability presents an ideal opportunity for visitors to bask in the warmth and beauty of the island, making the most of outdoor adventures and scenic vistas. Following September, daylight gradually begins to lessen, with October seeing a shift down to 11 hours, marking the onset of shorter days as the year progresses toward the cooler months. Overall, September stands as a perfect bridge between the summer's intensity and the forthcoming autumnal calm.
As September unfolds in Soufriere, Saint Lucia, the winds take a gentle sigh, with average speeds dropping to 4.3 m/s (10 mph). This marks a noticeable dip from the bustling breezes of the earlier months, where wind speeds typically hover around 6.7 to 7.8 m/s. After the vibrant summer, characterized by a steady breeze, September invites a more tranquil atmosphere, often perfect for enjoying the stunning coastal views and lush landscapes. As the island transitions towards October, there’s a subtle resurgence in wind, hinting at the dynamic changes that accompany the Caribbean’s seasonal shifts.
Weather in Soufriere varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Soufriere, focusing on differences in temperature, rainfall, humidity, and UV levels.
September is typically warmer than January, with average temperatures reaching 28°C (82°F) compared to January's 26°C (78°F). The maximum temperature in September can soar to 31°C (88°F), while January sees a peak of 29°C (84°F). Additionally, September experiences significantly more rainfall, with 136 mm (5.4 in) over 19 days, whereas January only receives 38 mm (1.5 in) across 15 days. Both months feature high humidity, with September at 80% and January slightly higher at 81%. For more detailed weather information in January, you can visit Soufriere weather in January.
In comparing the weather trends between September and February, September generally experiences warmer temperatures, with a minimum of 25°C (77°F), an average of 28°C (82°F), and a maximum of 31°C (88°F). In contrast, February sees slightly cooler temperatures, with a minimum of 22°C (72°F), an average of 25°C (78°F), and a maximum of 29°C (84°F). Additionally, September is characterized by significantly higher precipitation, totaling 136 mm (5.4 in) over 19 days, while February has much less rainfall, with only 31 mm (1.2 in) over 11 days. Both months maintain consistent humidity levels of around 80%. For more details on February weather, you can visit Soufriere weather in February.
September and March present distinct weather patterns. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 31°C (88°F), with an average of 28°C (82°F). This month experiences significant rainfall, totaling 136 mm (5.4 in) over 19 days, contributing to high humidity levels of around 80%. In contrast, March boasts slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 29°C (84°F), averaging at 26°C (78°F). Precipitation in March is much lighter at 37 mm (1.4 in) over just 13 days, while humidity remains consistent at 80%. For more details on March weather, visit Soufriere weather in March.
When comparing the weather in September and April, September tends to be warmer with average temperatures around 28°C (82°F), peaking at a maximum of 31°C (88°F). In contrast, April features slightly cooler temperatures, averaging 26°C (80°F) with a maximum of 29°C (85°F). September also experiences more precipitation, with 136 mm (5.4 in) spread over 19 days, unlike April, which sees only 32 mm (1.3 in) over 12 days. Both months have high humidity levels, with September at 80% and April at 79%. For more detailed information, you can check out Soufriere weather in April.
When comparing September and May weather, we see some notable differences despite similar temperature ranges. September tends to be slightly warmer, with average temperatures peaking at 28°C (82°F) and maximums reaching 31°C (88°F). In contrast, May has a slightly lower average temperature of 27°C (81°F) and max temperatures of 30°C (86°F). Precipitation is significantly higher in September, accumulating 136 mm (5.4 in) over 19 days, while May sees only 39 mm (1.5 in) across 12 days. Both months share the same humidity level of 80%, contributing to a consistently humid atmosphere. For more detailed information, you can check Soufriere weather in May.
When comparing the weather in 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). The maximum temperatures are also marginally higher in September, peaking at 31°C (88°F) versus June's maximum of 30°C (86°F). However, September experiences significantly more precipitation, with 136 mm (5.4 in) spread over 19 days, while June only sees 68 mm (2.7 in) over 17 days. Humidity levels are relatively similar, with September at 80% and June at 83%. For more detailed information, you can check Soufriere weather in June.
When comparing the weather in September to that of July, we note that September tends to be slightly warmer, with average temperatures reaching 28°C (82°F), compared to July's average of 27°C (81°F). While July has a minimum temperature of 24°C (76°F), September's minimum is a bit higher at 25°C (77°F). Interestingly, although September experiences more rainfall with 136 mm (5.4 in) over 19 days, July also sees a relatively wet month with 118 mm (4.6 in) over 24 days. Humidity levels are slightly lower in September at 80%, compared to 84% in July. For a more detailed look at the specifics of July weather, check out Soufriere weather in July.
In comparing the weather between September and August, September tends to be slightly warmer with average temperatures reaching 28°C (82°F) compared to August's average of 27°C (82°F). Both months start with a minimum temperature of 25°C (77°F), but September sees a maximum temperature of 31°C (88°F), marginally higher than August's 30°C (87°F). Precipitation increases in September, with 136 mm (5.4 in) over 19 days, compared to August’s 121 mm (4.8 in) spread across 25 days. Humidity levels remain comparable, with September at 80% and August at 81%. For more insights on August weather specifics, you can visit Soufriere weather in August.
September and October both showcase warm temperatures, with September slightly warmer on average. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 31°C (88°F), while October sees slightly cooler averages at a minimum of 24°C (76°F) and a maximum of 31°C (87°F). Both months experience high humidity levels, with September at 80% and October slightly higher at 82%. Precipitation is a common occurrence in both months, with September receiving 136 mm (5.4 in) over 19 days and October slightly increasing to 140 mm (5.5 in) over 20 days. For a closer look at October weather specifics, you can visit Soufriere weather in October.
September and November both experience warm temperatures, with September boasting a slightly higher average of 28°C (82°F) compared to November's 27°C (81°F). The maximum temperatures in September also peak higher at 31°C (88°F), while November's max is 30°C (86°F). In terms of precipitation, September sees more rainfall with 136 mm (5.4 in) over 19 days, whereas November has 108 mm (4.2 in) spread across 21 days. Humidity levels are relatively high in both months, with November experiencing slightly elevated humidity at 83% compared to September's 80%. For more detailed insights into the weather in November, you can check out Soufriere weather in November.
In September, the weather is typically warmer with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 31°C (88°F) and an average of 28°C (82°F). The month sees significant rainfall, with 136 mm (5.4 in) of precipitation spread over 19 days, contributing to a high humidity level of 80%.
In contrast, December offers slightly cooler temperatures, with a minimum of 23°C (73°F) and a maximum of 29°C (85°F), averaging 26°C (80°F). Precipitation decreases to 46 mm (1.8 in) over 16 days, while humidity remains relatively high at 82%. For more detailed information on December weather, check out Soufriere weather in December.
As we bid farewell to summer, September in Soufriere brings a unique blend of warmth and moisture. With average temperatures hovering around a pleasant 28°C (82°F), it offers a slight respite from the peak heat of the preceding months. However, this month is distinguished by higher humidity levels and increased precipitation, with nearly two-thirds of the month experiencing rainfall. While visitors can still enjoy the sun, those planning to explore should be prepared for an occasional downpour. For a deeper dive into Soufriere's weather patterns, check out Soufriere Climate.