Weather in Jakarta

Planning your day in Jakarta or simply curious about the weather there? In this section, you will find the most up-to-date information, detailed forecasts, and visual weather charts.

Jakarta, the capital of Indonesia, possesses a distinct tropical monsoon climate. This means it is warm and humid all year round. Air temperature remains remarkably stable throughout the year, with averages fluctuating between 26°C and 28°C. Daytime highs usually reach 29-31°C, and nighttime lows rarely drop below 24°C, creating consistently warm conditions.

Two main seasons are clearly distinguished in Jakarta's climate: wet (rainy season) and relatively dry. The wet season usually lasts from November to May. During these months, the highest amount of precipitation falls, and the number of rainy days can reach 27-29 per month, such as in January, February, and March. Rains are often heavy but can be short-lived. The relatively dry season falls on the period from June to October. At this time, precipitation noticeably decreases, especially in July, August, and September, when only 2-3 mm of precipitation falls, and the number of rainy days drops to 10-13. However, even in the "dry" season, brief rains are possible, and overall humidity remains high.

Thus, travellers to Jakarta should expect warm and humid weather at any time of the year. The difference between seasons lies mainly in the amount and frequency of rainfall. If you are planning a trip, it is worth considering these seasonal features, especially if you prefer to minimize the chance of getting caught in the rain.

The temperature regime in Jakarta is characterized by enviable stability throughout the year, which is typical for an equatorial climate. The average annual temperature fluctuates slightly, mainly within the range of 26.6°C to 28.1°C. The hottest month is usually October, when the average temperature reaches 28.1°C, and daytime highs can rise to 31.4°C. The "coolest" month, if one can say so for the tropics, is considered February with an average temperature of 26.6°C and maximum daytime values around 28.9°C. However, it is important to understand that even during this period, the weather in Jakarta remains very warm.

During the so-called "hot" season, which nominally falls on the period from May to October, daytime temperatures in Jakarta regularly exceed 30°C, reaching a peak in September (average maximum 31.2°C) and October (average maximum 31.4°C). Nights during these months also remain very warm, with minimum temperatures rarely dropping below 24-25°C. For example, in May the average minimum is 25.0°C, and in October – 24.9°C. This period often coincides with the relatively dry season, which may somewhat mitigate the sensation of heat compared to the wetter months, although overall humidity remains high.

The period from December to March, as well as individual months such as July, can be considered relatively "cool" for Jakarta, although the weather here remains hot and humid. Average daytime temperatures during these months stay at the level of 29-30°C, and nighttime temperatures drop to 24-24.5°C. For example, in February the average minimum is 24.4°C, and in July, which stands out with the lowest average minimum, the temperature can drop to 23.8°C at night. Fluctuations between daytime and nighttime temperatures in Jakarta are noticeable and average 5-7°C. The greatest difference is observed in drier months, such as August and September, where the daytime maximum can be 6.7-6.8°C higher than the nighttime minimum, providing some relative refreshment after the daytime heat.

In Jakarta, there are two clearly defined seasons, differing in the amount of precipitation and the frequency of rainy days. According to the provided data, the main characteristic of these seasons is the change in the number of days with precipitation, while the total millimetres of rainfall remains comparatively low throughout the year.

The season with the highest probability of precipitation, which can be called the "wet season", falls on the period roughly from November to May. During these months, the number of rainy days increases significantly. For instance, in March, the maximum number of days with precipitation is recorded – 29, with 8 mm of rainfall falling. January (28 rainy days, 9 mm) and February (27 rainy days, 10 mm) are also characterized by very frequent rains. February, according to these data, is the month with the highest amount of precipitation – 10 mm. In November (25 rainy days, 7 mm), December (27 rainy days, 8 mm), and April (26 rainy days, 6 mm), a high frequency of precipitation also persists, suggesting frequent, though perhaps not very heavy, rains.

The drier season in Jakarta lasts approximately from June to October. During this period, the amount of precipitation and the number of rainy days noticeably decrease. The driest months are July, August, and September, when only 2 mm of precipitation falls in each. At the same time, August sees the lowest number of rainy days – only 10. In June (19 rainy days, 3 mm) and October (18 rainy days, 4 mm), it rains significantly less often than at the peak of the wet season, but the probability of precipitation still remains.

When packing for Jakarta, remember that a warm and humid tropical climate awaits you year-round. Average temperatures consistently stay around 26-28°C, so the foundation of your wardrobe should be light, breathable clothing made from natural fabrics such as cotton or linen. Do not forget comfortable shoes for walking around the city, as exploring the capital of Indonesia on foot is a pleasure, and your feet will thank you for the comfort.

Jakarta has a clearly defined rainy season, which usually lasts from November to May. During this period, precipitation is very frequent – be prepared for daily, though not always prolonged, downpours (up to 29 rainy days per month). Therefore, a compact umbrella or a light raincoat will become your indispensable companions. Clothing made from quick-drying materials will also be very handy. In the so-called "dry" season, from June to October, the number of rainy days decreases (especially in July-September, when there are 10-13), but the likelihood of a sudden tropical downpour still remains, so light rain protection will not go amiss during this time as well.

Regardless of the season, do not forget about sun protection: sunscreen with high SPF, a hat, and sunglasses are mandatory, as the sun in the tropics is very active. Due to the high humidity and heat, it is important to drink enough water. It is also worth taking a light jacket, cardigan, or shawl with you – in shopping centres, restaurants, and cinemas, air conditioners can work very intensely, and you may need an extra layer of clothing for comfort indoors.