Last updated: January 18, 2025
St. Ann, Jamaica, presents a distinctive tropical savanna climate classified under the Köppen-Geiger system as Aw. This climatic zone is characterized by a minimum winter temperature of 17°C (63°F) in January and an average yearly temperature of 26°C (79°F). The region experiences its highest temperatures during the summer months, peaking at 36°C (96°F) in July. These conditions contribute to the area's vibrant ecosystems and highlight the important role of temperature variances in shaping its unique weather patterns.
St. Ann, Jamaica, exhibits distinct temperature patterns throughout the year, characterized by a gradual increase leading into the hotter months of summer. Starting in January, the climate is cooler, with minimum temperatures of 17°C (63°F) and average temperatures hovering around 24°C (76°F). As the year progresses, temperatures rise steadily; by July, the peak summer month, the region experiences maximum temperatures reaching 36°C (96°F). The late spring and early summer also show a noticeable increase, with averages climbing to 28°C (83°F) in both June and August. Interestingly, while September and October maintain relatively high averages of 27°C (81°F) and 27°C (80°F) respectively, temperatures begin to cool slightly into the late autumn and winter months, stabilizing around 25°C (78°F) in December. This seasonal trend underscores the tropical savanna climate of St. Ann, marked by warm temperatures year-round, with a distinct summer peak.
Ocho Rios experiences a pleasant climate with temperatures ranging from a minimum of 20°C (68°F) in January to a maximum of 33°C (92°F) in September monthly temperatures in Ocho Rios. In nearby Saint Ann's Bay, the temperatures start slightly lower at 19°C (66°F) in January, peaking at 33°C (92°F) in July monthly temperatures in Saint Ann's Bay. Similarly, Runaway Bay shares this temperature profile, with a minimum of 19°C (66°F) in January and a maximum of 33°C (92°F) in July monthly temperatures in Runaway Bay.
Precipitation in St. Ann, Jamaica, follows a recognizable seasonal pattern, peaking during the late summer and autumn months. The year begins with relatively low rainfall, such as January's total of 63 mm (2.5 in) over 12 days, and February's even lower 38 mm (1.5 in) across 13 days. However, as the wet season approaches, precipitation starts to rise, with March recording 79 mm (3.1 in), and April slightly increasing to 84 mm (3.3 in). May marks a significant uptick, bringing 132 mm (5.2 in) with 17 rainy days, establishing the transition into the more intense precipitation period.
The peak of rainfall occurs from September to October, when St. Ann experiences its highest totals, with September recording 155 mm (6.1 in) over 20 days and October reaching 176 mm (6.9 in) over 24 days. Following this peak, November brings 136 mm (5.4 in), while December sees a decrease to 78 mm (3.1 in). This clear delineation between the drier and wetter months highlights the influence of tropical weather patterns on the region, ultimately shaping its lush landscapes and vibrant ecosystems.
In St. Ann, Jamaica, the duration of sunshine exhibits a notable seasonal trend, characterized by a steady increase as the year progresses. Starting with 244 hours of sunshine in January, the region experiences a marked ascent through the early months of the year. February brings an increase to 300 hours, and by March, sunshine hours reach an impressive 341 hours. The pattern continues into April and May, where the sunshine duration remains robust at 340 hours and 328 hours, respectively. This trend culminates in the summer months, with July boasting the highest number of sunshine hours at 349 hours, closely followed by June and August, which also enjoy abundant sunlight.
As the year transitions from summer to autumn, sunshine hours begin to wane, but the decline is gradual. September still offers a generous 317 hours, before dropping further in October to 303 hours. The latter months of November and December witness even lower sunshine durations, with 288 hours and 308 hours, respectively. Overall, the trend highlights St. Ann’s abundant sunshine, especially from March to August, making it an ideal destination for sun-seekers, while also revealing the comparatively shorter sunny periods as winter approaches.
In St. Ann, Jamaica, the UV Index exhibits a striking pattern throughout the year, with values consistently falling in the very high to extreme categories. Starting strong in January with a UV Index of 9, the region quickly escalates to more hazardous levels as the year progresses. February sees a significant increase to 11 and continues to surge until March, where it reaches an extreme 13. This trend peaks in April with a UV Index of 14, representing the highest potential for skin damage within just 10 minutes of sun exposure, underscoring the necessity for comprehensive sun protection during this time.
From May through September, the UV Index stabilizes at 13, indicating persistent extreme exposure risk. As summer turns to autumn, there is a slight decrease, with October recording a UV Index of 12. Eventually, the index falls back into the very high category, ending the year with values of 9 in November and 8 in December, with burn times extending back to 15 minutes. These trends highlight the critical importance of sun safety measures for residents and visitors alike, especially during the peak months when UV exposure can be dangerously high.
UV Risk Categories
In St. Ann, Jamaica, daylight duration displays a modest yet intriguing seasonal pattern. The year begins with consistent daylight hours, maintaining a length of 11 hours in both January and February. As spring approaches in March, daylight increases to 12 hours, a trend that continues through April and May. This gradual expansion signifies the progression toward longer days, culminating in the summer months of June and July, where daylight peaks at 13 hours.
As summer transitions into autumn, daylight duration returns to 12 hours in August and September before dropping back to 11 hours in October. The pattern sustains through the remainder of the year, with November and December also seeing 11 hours of daylight. This consistent cycle of daylight duration underscores St. Ann’s substantially stable climate, offering residents and visitors alike ample opportunities to enjoy outdoor activities throughout the year.
Discovery Bay, Jamaica, boasts a tropical climate with warm temperatures year-round. Average monthly temperatures range from 24°C (76°F) in January to 28°C (82°F) from June to September, with peaks reaching 33°C (92°F) in July. Rainfall is variable, with the wettest months occurring in May (143 mm) and September (165 mm), while February sees the least at 34 mm. Sunshine hours are abundant, particularly in March and July, with around 341 and 346 hours respectively. For more details, visit Discovery Bay climate.
Ocho Rios, Jamaica experiences a tropical climate characterized by warm temperatures year-round. Average daily temperatures range from 25°C (77°F) in January to 28°C (83°F) in the summer months, peaking at 33°C (91°F) in July. Rainfall varies throughout the year, with October and November receiving the highest precipitation of 129 mm (5.1 in) and 138 mm (5.4 in) respectively, while February is the driest month at 47 mm (1.9 in). The region boasts ample sunshine, particularly in March and April, with over 340 hours of sun per month. For more detailed climate information, visit Ocho Rios climate.
Runaway Bay, Jamaica enjoys a tropical climate characterized by warm temperatures and seasonal rainfall. Monthly average temperatures range from 24°C (76°F) in January to 28°C (82°F) in the summer months of July and August. Precipitation varies, with the wettest months being May and September, receiving 136 mm (5.3 in) and 165 mm (6.5 in) respectively. Sunshine is abundant, particularly in March and April, each boasting around 341 hours. For more detailed information, visit Runaway Bay climate.
Saint Ann's Bay, Jamaica, enjoys a warm tropical climate with average temperatures ranging from 24°C (76°F) in January to 28°C (82°F) during the peak summer months of July and August. The region experiences substantial rainfall, particularly in May and September, receiving up to 165 mm (6.5 in) of precipitation. Despite the occasional downpour, ample sunshine is prevalent year-round, with March and April boasting approximately 341 hours of sunshine each. Those seeking pleasant weather should consider visiting during the drier months of February or March. For more detailed information, visit Saint Ann's Bay climate.
In conclusion, St. Ann, Jamaica, is characterized by a distinct climate marked by notable temperature, precipitation, sunshine duration, UV Index, and daylight patterns. With its warm tropical savanna climate, the region features a consistent annual temperature range, experiencing peaks during the summer months. While precipitation varies significantly throughout the year, the sunshine hours highlight the area's appeal for sun-seekers, coinciding with extreme UV Index levels that necessitate cautious sun protection. Additionally, the relatively stable daylight durations enhance the outdoor experience, making St. Ann an attractive destination year-round. Collectively, these climatic elements underscore the importance of understanding seasonal trends for both residents and visitors, ensuring they can fully appreciate the natural beauty and vibrant environment that St. Ann has to offer.