Last updated: January 18, 2025
Rum Cay, located in the Bahamas, experiences a tropical savanna climate classified under the Köppen-Geiger system as Aw. Characterized by warm temperatures year-round, the island sees a minimum of 19°C (67°F) in January, gradually rising to an average of 26°C (79°F) throughout the year. The warmest month is September, where maximum temperatures can reach up to 30°C (86°F). This climate, with its distinct wet and dry seasons, plays a pivotal role in shaping the island's unique ecosystems and influences its overall biodiversity.
In Rum Cay, Bahamas, temperature patterns showcase a delightful tropical climate with distinct seasonal variations. The year begins with cooler temperatures in January, where minimums dip to 19°C (67°F), gradually rising through February and March. As spring unfolds, average temperatures climb from 24°C (75°F) in January to a peak of 25°C (77°F) in April. The summer months, particularly June through September, bring warmth with averages around 28°C (82°F) and maximums peaking at 30°C (86°F) in September. As autumn approaches in October and November, temperatures cool slightly but remain pleasantly warm, concluding the year with December averages of 25°C (77°F). This seasonal progression reflects the island's inviting climate, ideal for outdoor activities and vivid marine life year-round.
Port Nelson experiences a tropical climate with January temperatures ranging from a minimum of 19°C (67°F) to a maximum of 30°C (86°F) in September. For detailed monthly temperature variations, you can refer to the provided link: monthly temperatures in Port Nelson.
Rum Cay experiences a distinct precipitation pattern throughout the year, characterized by a dry season in the first few months and a rainy season that peaks mid-year. January marks the start of the year with relatively low rainfall of 54 mm (2.1 in) over an average of 10 days, while February and March see even less, with 38 mm (1.5 in) and 31 mm (1.2 in), respectively. As spring transitions to summer, precipitation begins to increase, with May recording a significant rise to 125 mm (4.9 in), reflecting the onset of more frequent rain.
The summer months bring the highest rainfall, with September and October being the wettest at 123 mm (4.8 in) and 137 mm (5.4 in), respectively, correlating with an increase in rainy days—17 in September and 19 in October. November continues this trend with 140 mm (5.5 in), before rainfall starts to decrease again in December to 67 mm (2.7 in). This seasonal variability in precipitation not only shapes the island's lush landscapes but also plays a crucial role in its unique ecosystems and local agriculture.
In Rum Cay, the sunshine duration exhibits a captivating seasonal trend, beginning with a gradual increase from the beginning of the year. January sees 228 hours of sunshine, but as winter progresses into spring, daylight hours steadily rise, reaching 348 hours in April. This upward trajectory highlights the transition toward summer, with March and April being particularly sunny months, providing residents and visitors alike with ample opportunities to enjoy outdoor activities in beautiful weather.
The height of summer brings the longest sunshine duration, peaking in July at an impressive 368 hours. Following this pinnacle, the hours of sunshine begin to taper slightly but remain abundant, with August still boasting 356 hours. As autumn approaches, sunshine hours decline to 314 in October and further dip to 280 in November, signaling the onset of shorter days. Despite this reduction, December still offers a respectable 291 hours of sunlight, ensuring that Rum Cay remains a bright and inviting destination throughout the year.
The UV Index in Rum Cay, Bahamas, exhibits significant fluctuations throughout the year, reflecting the intensity of ultraviolet radiation in this tropical paradise. Beginning the year in January with a UV Index of 7, categorized as high, visitors can expect a burn time of approximately 25 minutes. As the months progress into February and March, the UV Index climbs sharply, peaking at 11 in March, indicative of an extreme exposure category that necessitates careful sun protection measures, with a dangerously short burn time of just 10 minutes.
Entering the summer months, the UV Index remains consistently at 12, continuing to signal extreme sun intensity from April through September. This sustained level emphasizes the need for protective measures, as even brief sun exposure can lead to skin damage. As autumn sets in, the UV Index gradually decreases, dropping to 10 in October and 8 in November, while December sees a return to 7. Despite the seasonal variations, it remains crucial for residents and visitors to be vigilant about sun safety, especially during the peak summer months when the risks are at their highest.
UV Risk Categories
In Rum Cay, the daylight duration presents a rhythmic pattern that reflects the island's tropical location. The year begins with 10 hours of daylight in January, gradually increasing to 11 hours in February, and reaching a notable 12 hours in March. As spring arrives, daylight remains consistent at 12 hours through April before extending to 13 hours in May and continuing through June and July. This peak in daylight allows residents and visitors ample time to enjoy the island's stunning natural beauty and outdoor activities.
As summer transitions into fall, daylight hours begin to wane slightly, preserving a still comfortable 12 hours in both August and September. The trend continues into October with a decrease to 11 hours, and by November, daylight returns to 10 hours, completing the seasonal cycle. December stabilizes at 10 hours, echoing the start of the year. This even distribution of daylight throughout the year not only enriches the island's vibrant ecosystem but also enhances the experience for those seeking sun-filled adventures.
Port Nelson, Bahamas experiences a tropical climate characterized by warm temperatures year-round. From January to March, temperatures range from mild 19°C (67°F) to 27°C (80°F), while summer months see highs around 30°C (86°F) in September. Precipitation peaks in late spring and fall, with May and October recording 125 mm (4.9 in) and 137 mm (5.4 in) respectively. Sunshine hours are abundant, reaching up to 368 hours in July, making it a premier destination for sun-seekers. For more details, visit Port Nelson climate.
In conclusion, Rum Cay, Bahamas, offers a captivating climate characterized by its warm temperatures, ample sunshine, and fluctuating UV Index and daylight duration throughout the year. With its tropical savanna climate, the island experiences a clear seasonal progression, from cooler and drier months in early winter to the peak warmth and higher precipitation in the summer. The extended hours of daylight and high UV Index during the sunnier months remind visitors and inhabitants alike of the importance of sun safety and outdoor enjoyment. Overall, Rum Cay's climate not only supports its vibrant ecosystems but also cultivates a rich environment for leisure and exploration, making it a cherished destination for travelers seeking both relaxation and adventure.