Last updated: April 17, 2025
Jakarta, Indonesia, exhibits a tropical rainforest climate (Af) as classified by the Köppen-Geiger system. Characterized by consistently warm temperatures, the city experiences a minimum of 21°C (70°F) in July, with an average temperature of 27°C (81°F) throughout the year. The climate peaks in October, where maximum temperatures can rise significantly, reaching up to 35°C (96°F). This warm and humid climate underpins Jakarta's lush vegetation and vibrant ecosystem, marking it as a hallmark of tropical urban environments.
Jakarta, Indonesia, experiences a distinct yet consistent temperature pattern throughout the year, characterized by minimal seasonal variation. Monthly minimum temperatures range from 21°C (70°F) in July to 24°C (75°F) in May, while average temperatures maintain a steady 27-28°C (81-82°F). Maximum temperatures exhibit a slight increase, peaking at 35°C (95-96°F) in September and October. Notably, the warmest months, June through October, coincide with the region's drier season, while January through April tend to be slightly cooler with consistent humidity and rainfall. Overall, the climate remains tropical and warm year-round, with temperature variations aligning closely with the wet and dry seasons.
In Jakarta, temperatures range from a minimum of 21°C (70°F) in July to a maximum of 35°C (96°F) in October, reflecting a tropical climate with significant warmth during the later months. In contrast, Pulau Pramuka experiences slightly milder temperatures, with a minimum of 24°C (76°F) in September and reaching up to 31°C (87°F) in November. For more detailed insights, visit monthly temperatures in Jakarta and monthly temperatures in Pulau Pramuka.
Jakarta, Indonesia, showcases a pronounced pattern of precipitation, primarily dictating the wet and dry seasons of the region. The wet season, generally spanning from December to March, sees the highest rainfall, with February recording a peak of 319 mm (12.6 in) over 27 days. During this period, January also experiences significant precipitation at 253 mm (10.0 in) for 23 days, while March follows closely with 259 mm (10.2 in) over 28 days. As the year progresses into April and May, rainfall diminishes, with April witnessing 220 mm (8.7 in) and May reducing to 142 mm (5.6 in).
In stark contrast, the dry season from June to September presents a considerable reduction in precipitation, culminating in July, which receives only 55 mm (2.2 in) over 12 days. August sees a further decrease with just 52 mm (2.0 in) across 10 days. Rainfall begins to increase slightly in October with 101 mm (4.0 in) over 17 days, and November experiences a resurgence at 169 mm (6.6 in). Thus, Jakarta's climate is marked by distinct wet and dry phases, heavily influencing the local ecosystem and urban life.
In Jakarta, Indonesia, the climate is characterized by a high humidity that remains a consistent feature throughout the year. January kicks off the year with a peak humidity of 85%, closely followed by February at 86%. As the months progress towards the dry season, humidity gradually decreases, hitting a low of 76% in September. After this dip, humidity begins to rise again as the wet season approaches, stabilizing around the 80% mark for most of the remaining months. This pattern highlights Jakarta's tropical nature, where the air is perpetually thick and warm, creating a muggy environment that locals and visitors alike must adapt to year-round.
In Jakarta, Indonesia, sunshine duration exhibits a clear seasonal trend, with longer hours of sunlight evident during the mid-year months. Starting from January with 221 hours of sunshine, the city gradually experiences an increase, reaching a peak in the dry season. July and August emerge as the sunniest months, with 317 and 319 hours, respectively, providing ample opportunity for outdoor activities and sunlight exposure. This upward trajectory reflects the transition from the wet to the dry season, where drier weather conditions typically enhance sunshine availability.
Conversely, the wet months from December to February show a noticeable dip in sunshine hours, particularly in January where only 221 hours are recorded. However, as the months progress towards mid-year, the sunshine duration picks up, allowing for a significant boost in sunlight as the atmosphere clears. Notably, even in the spring months like April and May, with 291 hours and 307 hours respectively, the overall pattern reinforces Jakarta's characteristic climate—highlighting not just the warmth but the vital role of sunshine in supporting its vibrant tropical ecosystem and lifestyle.
Jakarta, Indonesia, experiences consistently high levels of ultraviolet (UV) radiation throughout the year, with the UV Index often reaching extreme levels. In the first quarter of the year, January to March, the UV Index peaks at an alarming 16, indicating significant risk of harm from unprotected sun exposure, with a critical burn time of just 10 minutes. Such elevated levels in early months reflect Jakarta's equatorial positioning, leading to intense UV radiation, making sun safety measures imperative for residents and visitors alike.
As the year progresses, the UV Index remains notably high, averaging between 11 to 15, especially during the dry season. Months like October and November see the UV Index return to 15, maintaining the extreme categorization and emphasizing the need for conscious sun protection strategies. Interestingly, despite a slight decrease in UV readings during the mid-year months, burn times remain consistently brief at 10 minutes, reinforcing the importance of protective clothing, sunscreen, and shade to mitigate the risks posed by Jakarta's powerful sun.
UV Risk Categories
In Jakarta, Indonesia, daylight duration remains relatively stable throughout the year, typically averaging around 12 hours a day. The stability in daylight hours, characteristic of equatorial regions, is evident in the first three months of the year—January, February, and March—all clocking in at 12 hours of daylight. This consistency offers residents and visitors ample opportunity to engage in various outdoor activities, reflecting the city's vibrant tropical lifestyle.
As the year progresses into the later months, daylight hours dip slightly to 11 hours from April through August, yet this decrease is minimal and does not greatly affect daily life. By September, daylight duration increases back to 12 hours, continuing through October, November, and December. This rhythmic pattern of daylight reinforces the tropical climate's predictability, allowing inhabitants of Jakarta to plan activities and festivities around a reliable sunlight schedule, integral to both daily life and leisure.
Jakarta, Indonesia, experiences a tropical climate with consistently warm temperatures throughout the year. Average temperatures range between 27°C (80°F) and 28°C (82°F), peaking at 35°C (95°F) in September and October. The city receives heavy rainfall, particularly from February to April, with January being the wettest month at 252 mm (9.9 in). Despite the high precipitation, Jakarta enjoys ample sunshine, especially from July to August, where daily sunshine can exceed 10 hours. For more details, visit Jakarta climate.
Pulau Pramuka, Indonesia experiences a tropical climate with temperatures consistently ranging from 25°C to 31°C throughout the year. The warmest months are typically November and April, with average highs reaching up to 31°C (87°F). Rainfall is most abundant from January to February, with January receiving over 250 mm of precipitation, while July and August are notably drier with only around 45 mm. The island enjoys ample sunshine, especially in July and August, when it boasts around 319 to 322 hours of sunlight. For more details, visit Pulau Pramuka climate.
In conclusion, Jakarta's climate is characterized by its warm temperatures, significant precipitation, high UV indices, and stable daylight duration, all contributing to the city's tropical environment. The consistent availability of daylight throughout the year, coupled with pronounced wet and dry seasons, shapes the lifestyle and activities of its residents. With extreme UV levels underscoring the importance of sun protection and the pronounced rainfall patterns influencing local ecosystems, understanding these climatic factors is essential for both sustainable urban planning and health considerations. As Jakarta continues to navigate the challenges posed by climate change, these fundamental aspects of its weather will remain crucial in supporting its thriving metropolis and enhancing the quality of life for its inhabitants.