Last updated: January 18, 2025
San Juan, Dominican Republic, is characterized by a tropical savanna climate according to the Köppen-Geiger classification (Aw). This climate is marked by relatively stable temperatures throughout the year, with a minimum of 11°C (51°F) in January and a peak average of 34°C (93°F) in July. The city enjoys a pleasant average temperature of 22°C (73°F), striking a balance between seasonal warmth and cooler winter months, making it an attractive destination for visitors seeking a warm climate year-round.
San Juan, Dominican Republic, exhibits a distinct temperature pattern throughout the year, highlighting its tropical climate. The colder months of January and February see minimum temperatures dipping to 11-12°C (51-54°F), with average daytime highs reaching around 30-31°C (86-88°F). As spring emerges in March and April, the temperatures gradually rise, peaking at 32°C (90°F) in April while maintaining pleasant average temperatures around 21-22°C (70-72°F). The summer months of July and August bring the warmest weather, with maximum temperatures soaring to 34°C (93°F) and nighttime lows rising to 17°C (63°F). Throughout the autumn months, temperatures begin to moderate slightly, maintaining averages close to 23-24°C (73-76°F) while minimums hover around 16°C (61°F). This consistent warmth, punctuated by a brief cooler season, characterizes San Juan's appealing tropical savanna climate.
In the Dominican Republic, Vallejuelo experiences a minimum temperature of 12°C (53°F) in January, peaking at 33°C (91°F) in July monthly temperatures in Vallejuelo. Similarly, Matayaya has a slightly lower minimum of 11°C (52°F) in January, with maximum temperatures reaching 33°C (91°F) in August monthly temperatures in Matayaya. Meanwhile, San Juan de la Maguana mirrors Vallejuelo's January minimum of 12°C (53°F) and also records a maximum of 33°C (91°F) in July monthly temperatures in San Juan de la Maguana.
San Juan, Dominican Republic, experiences a varied precipitation pattern throughout the year, with the dry season occurring in the early months. January and February are among the driest, receiving only 16 mm (0.6 in) and 19 mm (0.7 in) of rainfall, respectively, across about 4-5 days. As the region transitions into spring, precipitation levels begin to rise significantly, particularly in March when rains increase to 83 mm (3.3 in). April marks the peak of the rainy season, delivering 116 mm (4.6 in) over 17 days, signaling the onset of more sustained rainfall.
The wettest months occur from August to September, with 124 mm (4.9 in) recorded in September alone, coinciding with the Atlantic hurricane season. This period sees an increase in rainy days, averaging 19 days in September. Despite the heavy rainfall, the moisture provides vital hydration for local ecosystems and agriculture. Following the peak, precipitation decreases again in the fall, with November and December featuring moderate rainfall levels of 78 mm (3.1 in) and 21 mm (0.8 in), respectively, allowing for a gradual return to drier conditions as the year closes.
In San Juan, Dominican Republic, sunshine duration demonstrates a remarkable seasonal trend, with noticeable increases from winter to summer. Beginning with 254 hours of sunshine in January, the city experiences a steady rise in daylight hours, peaking in July at an impressive 355 hours. The trend continues through spring and early summer, with March and April showcasing 341 and 339 hours, respectively. By May, sunshine hours reach 345, indicating a sunny transition into the hotter months. This consistent increase not only enhances the warmth but also promotes outdoor activities, making these months particularly attractive for tourists and locals alike.
As the year progresses into late summer and fall, sunshine duration starts to decline, but still remains relatively generous. Despite September’s drop to 308 hours, it remains a fruitful month of sunshine as holidaymakers might still bask in pleasant weather. October and November see further decreases, with 307 and 287 hours, respectively, leading into the cooler winter months. Even with this decline, December presents 315 hours of sunlight, ensuring a bright holiday season. Overall, San Juan's abundant sunshine throughout the year fosters a vibrant climate, with the peak sunshine months inviting ample opportunities for exploration and enjoyment of the natural beauty of the region.
In San Juan, Dominican Republic, the UV Index highlights a significant variation in solar radiation levels throughout the year, necessitating awareness for sun safety. The year begins with a UV Index of 9 in January, categorized as "very high," translating to an average burn time of approximately 15 minutes for unprotected skin. However, as winter transitions into early spring, February sees a sharp spike, reaching a remarkable UV Index of 12, indicating extremely high exposure levels. This high intensity continues through March, April, and May, which all maintain a UV Index of 14, suggesting a precarious burn time of just 10 minutes during these peak levels.
As summer sets in, the UV Index remains notably high, with values averaging 13 from June to September, consistently classified as "extreme." This prolonged exposure presents a clear caution for outdoor activities, emphasizing the importance of protective measures such as sunscreen and clothing. In October, the index slightly decreases to 12 before falling back to 9 in November and 8 in December, aligning with the cooler months. Yet, even during the winter, UV levels remain significantly high, underscoring the need for year-round vigilance against UV exposure. Overall, San Juan's climate demands careful attention to sun safety, particularly during the warmest and sunniest months of the year.
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In San Juan, Dominican Republic, daylight duration displays a consistent pattern throughout the year, reflecting the region's tropical climate. The year begins with about 11 hours of daylight in both January and February, providing a steady amount of sunlight that characterizes the winter months. As spring approaches in March, daylight increases slightly to 12 hours, and this trend continues through April, showcasing the gradual lengthening of days as the seasons transition. May and June see maximum daylight durations of 13 hours, promoting vibrant outdoor activities and a lively atmosphere for both locals and tourists alike.
As summer yields to autumn, daylight starts to wane, with July, August, and September maintaining 13 hours, but gradually reducing to 12 hours by October. This decrease becomes more pronounced in November, returning to 11 hours by the end of the year in December. Throughout this cycle, the changes in daylight duration allow for a variety of seasonal experiences, from sun-drenched beach days to the more temperate conditions of late fall. Overall, the relatively consistent daylight in San Juan enriches its tropical charm, fostering a dynamic lifestyle year-round.
Bohechio, Dominican Republic, experiences a tropical climate with mild to warm temperatures throughout the year. Average temperatures range from 19°C (67°F) in January to 23°C (73°F) in August, with maximums reaching up to 31°C (88°F) in July. Rainfall is heaviest from May to September, peaking in September with 171 mm (6.7 in) of precipitation. Despite significant rainfall during these months, the region enjoys ample sunshine, particularly in July with 357 hours. For more detailed information, visit Bohechio climate.
Cercado Abajo, Dominican Republic, experiences a tropical climate with warm temperatures year-round. Average monthly temperatures range from 21°C (71°F) in January to 25°C (77°F) in July and August, with maximums peaking at 34°C (93°F) during the summer months. The region sees diverse precipitation patterns, with March and April being the wettest months, receiving 94 mm (3.7 in) and 112 mm (4.4 in) respectively. Sunshine is abundant, particularly in the summer, with over 350 hours of sunshine in July. For more details, visit Cercado Abajo climate.
The climate in Juan de Herrera, Dominican Republic, features mild to warm temperatures year-round, with average highs ranging from 20°C (68°F) in January to 24°C (75°F) in July. Precipitation peaks in April and September, with monthly averages of 124 mm (4.9 in) and 123 mm (4.8 in), respectively. The region enjoys considerable sunshine, especially during the summer months, with over 350 hours in July and May. Overall, Juan de Herrera experiences a tropical climate that is both warm and relatively wet. For more details, visit Juan de Herrera climate.
Las Matas de Farfan, Dominican Republic, experiences a tropical climate with warm temperatures year-round. The average monthly temperatures range from 21°C (71°F) in January to 25°C (77°F) in the summer months, with maximums peaking at 34°C (93°F) in July and August. Precipitation varies significantly, particularly from March to April, with April receiving the highest rainfall at 112 mm (4.4 in). The area enjoys abundant sunshine, peaking in July with 354 hours of sun. For more details, visit Las Matas de Farfan climate.
Matayaya, Dominican Republic, experiences a warm, tropical climate characterized by mild winters and hot summers. Average temperatures range from 21°C (70°F) in January to 25°C (76°F) in August, with maximums reaching up to 33°C (91°F). Rainfall peaks from May to September, particularly in September with 146 mm (5.8 in), while the driest months are February and January. Sunshine is abundant, particularly in the summer, with July averaging 353 hours of sunlight. For more details, visit Matayaya climate.
Pedro Corto, Dominican Republic, enjoys a tropical climate characterized by warm temperatures year-round. Average monthly temperatures range from a minimum of 11°C (53°F) in January to a maximum of 34°C (93°F) in July and August. Precipitation varies significantly, with the wettest months being April and September, receiving 112 mm (4.4 in) and 101 mm (4.0 in) respectively. Sunny days are common, particularly in the summer months, with July boasting the highest sunshine duration at 354 hours. For more detailed climate information, visit Pedro Corto climate.
San Juan de la Maguana, Dominican Republic, experiences a tropical climate with mild winters and warm summers. Average temperatures range from 20°C (69°F) in January to 24°C (75°F) in July and August, with maximums peaking at around 33°C (91°F) in mid-summer. Precipitation varies significantly, with the wettest months being April and September, receiving up to 124 mm (4.9 in) and 123 mm (4.8 in) respectively. Sunshine is abundant, with July boasting the most at 357 hours. For more detailed information, visit San Juan de la Maguana climate.
Vallejuelo, Dominican Republic, experiences a tropical climate characterized by warm temperatures year-round. Average monthly temperatures range from 20°C (69°F) in January to 24°C (75°F) in the warmest months of July and August, while maximums can reach up to 33°C (91°F). Precipitation is highest from April to September, with April recording 124 mm (4.9 in), while sunshine hours peak in July with 357 hours of sun. For more details, visit Vallejuelo climate.
In conclusion, San Juan, Dominican Republic, boasts a tropical climate featuring warm temperatures, abundant sunshine, and significant UV exposure throughout the year. The distinct seasonal patterns in temperature and precipitation, along with the consistent daylight duration, create an inviting environment for residents and visitors alike. However, the high UV Index during peak months emphasizes the importance of sun safety practices year-round, while the changes in daylight duration enrich the local lifestyle and outdoor activities. As San Juan continues to attract those seeking both relaxation and adventure, understanding its climatic characteristics remains essential for making the most of its beautiful, sun-soaked days.