Last updated: August 21, 2025
In September, Saint George's, Grenada experiences a tropical climate characterized by warm temperatures and considerable humidity. The maximum temperature reaches a welcoming 29°C (85°F), while the average hovers around a comfortable 28°C (82°F), with a minimum of 25°C (78°F). However, this month is also marked by significant precipitation, totaling 145 mm (5.7 in) over approximately 21 days, making it one of the wetter periods of the year. With humidity levels around 79%, visitors should prepare for lush greenery and vibrant landscapes, as the tropical showers refill the island's natural beauty.
In September, Saint George's, Grenada experiences warm and inviting temperatures, with minimums around 25°C (78°F) and maximums reaching up to 29°C (85°F). This month marks a slight uptick in warmth, where the average temperature reaches 28°C (82°F), making it one of the hotter months of the year. As summer transitions into fall, the city enjoys consistent warmth, with only minor fluctuations from previous months. Travelers can expect a tropical climate perfect for beach outings and exploration, while the gentle sea breezes offer a pleasant reprieve from the heat.
In September, Saint George's, Grenada experiences a significant increase in rainfall, accumulating about 145 mm (5.7 in) over 21 days of precipitation. This month continues the wet season trend set by the preceding months, particularly August, which recorded the highest rainfall at 177 mm (7.0 in). The persistent showers in September underscore the transition into the peak of the wet season, where the island encounters intensified weather patterns. Following this trend, October is expected to bring even more rainfall, with forecasts suggesting an increase to 195 mm (7.7 in), keeping the region lush and vibrant. The gradual rise in both precipitation amount and days hints at a characteristic tropical climate that beautifully nourishes Grenada’s verdant landscapes.
As September rolls in, Saint George's, Grenada experiences a slight dip in humidity, settling at 79%. This marks a subtle decline from the peak months of July and August, where figures reached 83% and 80%, respectively. The transition into September hints at the tail end of the summer season, evidenced by a gradual decrease in humidity levels that began in April. While the humidity remains high throughout the year, September’s numbers reflect a consistent pattern of slightly elevated moisture levels during the mid-year months, before dropping back to 79% in October. This rhythm of humidity not only shapes the island's lush environment but also influences the overall tropical climate, making it an ideal time for both relaxation and exploration.
In September, Saint George's, Grenada, experiences an extreme UV Index of 14, making it crucial for beachgoers and sun-seekers to exercise caution, with a burn time of only 10 minutes. This trend of high UV exposure is consistent throughout the summer months and into early fall, maintaining a UV Index level of 14 since August. While the UV Index remains elevated, it is important to note that it slightly dips in October to 13, before declining further towards the end of the year. With such intense sun exposure in September, protective measures like sunscreen and protective clothing are essential for outdoor activities. For detailed information on UV levels year-round, visit Saint George's UV Index.
UV Risk Categories
As summer wanes, September in Saint George's, Grenada, continues to bask in a generous 326 hours of sunshine, making it a delightful time to explore the island's natural beauty. This month sees a slight dip from the sun-drenched peak of 350 hours in May but maintains a bright glow that invites both relaxation and adventure. Compared to earlier months, September's sunshine remains abundant and consistent, nestled alongside the strong summer months of July and August, which both basked in 342 hours. With autumn approaching, visitors can enjoy the transitioning landscape, with plenty of sunlight to savor before the year gently shifts into the cooler months ahead.
In Saint George's, Grenada, the chance of enjoying sunny weather in September hovers at a pleasant 51%, making it a favorable time for outdoor activities. This trend demonstrates a slight uptick from the previous months of summer, where July and August reported 41% and 47% sunshine, respectively. While September's sunny prospects are more promising than half the year, they still reflect the transitional nature of the season as it gently shifts from the drier peak months into the wetter period. With just a hint of sun making its appearance more frequently, visitors can expect a delightful blend of warmth and occasional showers in this vibrant destination.
In Saint George's, Grenada, September enjoys a delightful 12 hours of daylight, mirroring the extended sunshine of the preceding summer months from June to August. This consistency creates a vibrant atmosphere perfect for exploration and relaxation. As the year transitions into October, daylight begins to gradually taper off to 11 hours, signaling the return of shorter days. Overall, the steady distribution of daylight from March to September emphasizes the tropical charm of the region, making it an idyllic spot for those seeking sun-soaked adventures year-round.
As September unfolds in Saint George's, Grenada, residents and visitors alike experience a noticeable dip in the average wind speed, which drops to 5.3 m/s (12 mph)—the lightest breeze of the year. This calmness contrasts strikingly with the lively winds of earlier months, where January and February enjoyed brisk average speeds of over 9 m/s (20 mph), ideal for sailing and other outdoor activities. Following September, the winds begin to pick up again in October, returning to a more moderate 7.3 m/s (16 mph). The trend suggests that September serves as a transitional period, where the tropical atmosphere settles into a serene state, inviting peaceful beach days and tranquil evenings as it bridges the shift towards the more active winds of autumn.
Weather in Saint George's varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Saint George's, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is typically warmer with a minimum temperature of 25°C (78°F) and an average of 28°C (82°F), while January sees slightly cooler temperatures, starting at a minimum of 23°C (74°F) and averaging 26°C (79°F). Precipitation in September is notably higher at 145 mm (5.7 in) over 21 days, in contrast to January's 50 mm (2.0 in) over just 13 days. Despite the slight difference in temperature, both months maintain high humidity levels, around 79% in September and slightly lower at 78% in January. For more detailed insights, you can check out Saint George's weather in January.
September and February exhibit distinct weather patterns. In September, temperatures range from a minimum of 25°C (78°F) to a maximum of 29°C (85°F), with an average of 28°C (82°F). This month experiences significant rainfall, with 145 mm (5.7 in) spread over 21 days and humidity levels at 79%. In contrast, February offers slightly cooler temperatures that range from 23°C (74°F) to 27°C (81°F), with an average of 26°C (78°F). Precipitation drops significantly to 37 mm (1.5 in) over 14 days and humidity decreases to 77%. For a closer look at February's weather in Saint George's, you can visit Saint George's weather in February.
When comparing the weather in September and March, September tends to be warmer and wetter. In September, average temperatures range from a minimum of 25°C (78°F) to a maximum of 29°C (85°F), with a high humidity level of 79% and considerable rainfall of 145 mm (5.7 in) over 21 days. In contrast, March features slightly cooler temperatures, with an average range of 24°C (75°F) to 27°C (81°F), lower precipitation at 40 mm (1.6 in) over just 12 days, and a humidity level of 76%. For a detailed look at weather patterns during March, you can check Saint George's weather in March.
In comparing the weather of September and April, we see notable differences in both temperature and precipitation. September maintains slightly warmer temperatures, with minimums around 25°C (78°F) and averages peaking at 28°C (82°F), while April’s temperatures are a bit cooler, ranging from a minimum of 24°C (76°F) to an average of 26°C (80°F). Precipitation is significantly higher in September, accumulating 145 mm (5.7 in) over 21 days compared to April's modest 26 mm (1.0 in) over just 9 days. Additionally, humidity is slightly higher in September at 79%, versus 75% in April, contributing to a more humid feel during the former month. For more detailed insights, you can check Saint George's weather in April.
In comparing the weather between September and May, September tends to be warmer with an average temperature of 28°C (82°F) and maximums reaching 29°C (85°F), while May is slightly cooler with an average of 27°C (80°F) and a maximum of 28°C (83°F). Additionally, September experiences significantly more rainfall, with 145 mm (5.7 in) spread over 21 days, compared to May's 50 mm (2.0 in) over just 13 days. Humidity levels are also higher in September at 79%, whereas May maintains a slightly lower humidity of 76%. For more detailed insights, you can check out Saint George's weather in May.
In comparing the weather between June and September, both months experience warm temperatures, with September having a slightly higher average temperature of 28°C (82°F) compared to June's average of 27°C (81°F). However, September sees more precipitation, totaling 145 mm (5.7 in) over 21 days, whereas June has 111 mm (4.4 in) over just 20 days. Humidity levels are quite similar, with September at 79% and June at 80%. For a closer look at June's specific conditions, you can visit Saint George's weather in June.
In September, the weather remains warm with a minimum temperature of 25°C (78°F) and an average high of 29°C (85°F). However, it experiences slightly less rain compared to July, bringing about 145 mm (5.7 in) over 21 days, with humidity levels at 79%. Conversely, July offers comparable temperatures, with a minimum of 25°C (77°F) and an average maximum of 28°C (83°F), but experiences more precipitation at 167 mm (6.6 in) across 26 days and slightly higher humidity at 83%. For more details on July weather, you can visit Saint George's weather in July.
In comparing the weather between September and August, September shows only a slight increase in average temperatures, with a minimum of 25°C (78°F) and an average of 28°C (82°F), compared to August, which has similar minimum temperatures but a slightly lower average at 27°C (81°F). Both months have a maximum temperature of 29°C (85°F), indicating a consistent warmth. However, September experiences less precipitation, with 145 mm (5.7 in) over 21 days, while August sees higher rainfall at 177 mm (7.0 in) across 25 days. Humidity levels are comparable, with September at 79% and August slightly higher at 80%. For further details, you can check Saint George's weather in August.
In September, the weather features warm temperatures with a minimum of 25°C (78°F), an average of 28°C (82°F), and a maximum of 29°C (85°F). The month sees considerable rainfall, totaling 145 mm (5.7 in) over 21 days, contributing to a high humidity level of 79%. In contrast, October experiences slightly cooler average temperatures, dropping to 27°C (82°F), while the minimum and maximum temperatures remain similar at 25°C (77°F) and 30°C (85°F) respectively. However, October is wetter, with precipitation increasing to 195 mm (7.7 in) over 24 days, maintaining the same humidity level of 79%. For a detailed look at what to expect this month, check out Saint George's weather in October.
In September, the weather tends to be slightly warmer with average temperatures around 28°C (82°F) and a maximum of 29°C (85°F), accompanied by a higher total precipitation of 145 mm (5.7 in) spread over 21 days. Humidity levels are also significant, at 79%. In contrast, November shows a slight decrease in temperature, with an average of 27°C (81°F) and a maximum of 28°C (83°F), while experiencing a bit less rainfall at 132 mm (5.2 in) over 22 days. Humidity remains fairly high at 81%. For more detailed insights, you can check Saint George's weather in November.
In September, the weather is typically warmer, with temperatures averaging around 28°C (82°F) and a maximum reaching up to 29°C (85°F). The month is characterized by higher precipitation, totaling 145 mm (5.7 in) over 21 rainy days, and a humidity level of 79%. In contrast, December brings slightly cooler temperatures, with an average of 27°C (80°F) and a max of 28°C (83°F). While December also features 21 rainy days, the total precipitation drops significantly to 82 mm (3.2 in), resulting in a humidity level of 80%. For more details on the weather conditions in December, you can check Saint George's weather in December.
As September rolls into Saint George, visitors can expect a distinct shift in weather compared to other months. With a balmy average temperature hovering around 28°C (82°F), the days are warm, but the high humidity at 79% and frequent rain showers—21 days of precipitation totaling 145 mm (5.7 in)—contribute to a more tropical atmosphere. This month often marks a transition from the dry spell of late summer to the wetter season, making it a unique period for experiencing the lush landscapes of Grenada. Whether you're drawn to the vibrant flora or the cozy indoor activities during rain, September offers its own charm in the beautiful surroundings of Saint George. For more detailed insights, check out Saint George's Climate.