Jakarta
Indonesia
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Jakarta, Indonesia

The cityscape of Jakarta, Indonesia, under a dramatic evening skyline
The cityscape of Jakarta, Indonesia, under a dramatic evening skyline
September in Jakarta marks the beginning of the end of the dry season with its humidity levels dropping to 71% - probably the lowest to be experienced in the entire year.
September is the warmest month of the year with the temperatures going as high as 33°C (91.4°F) maximum and 27°C (80.6°F) at the minimum. Rainfall increases a little to rain for an average of six days during the month, collecting average precipitation of 61mm (2.4").
The average monthly sunshine hours drop a few to 280 hours across the month, inciting the sea to heat at a monthly average of 28°C (82.4°F).

What is the warmest month in Jakarta?

The warmest month in Jakarta, Indonesia, is September, with an average high-temperature of 33°C (91.4°F) and an average low-temperature of 25.5°C (77.9°F).

What is the temperature in September in Jakarta?

In September, in Jakarta, the average high-temperature is 33°C (91.4°F), and the average low-temperature is 25.5°C (77.9°F).

What is the least humid month in Jakarta?

With an average relative humidity of 75%, September is the least humid month in Jakarta.

What is the average humidity in September in Jakarta?

In September, the average relative humidity is 75%.

How much does it rain in Jakarta in September?

In September, in Jakarta, the rain falls for 6 days. Throughout September, 64mm (2.5") of precipitation is accumulated.

What is the water temperature in September in Jakarta?

In Jakarta, Indonesia, the average seawater temperature in September is 29°C (84.2°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Jakarta have in September?

The average length of the day in September in Jakarta is 12.1h.

What month has the most sunshine in Jakarta?

With an average of 9.7h of sunshine, September has the most sunshine of the year in Jakarta, Indonesia.

How long on average sun shines in September in Jakarta?

In September, the average sunshine is 9.7h.

What is the month with the highest UV index in Jakarta?

Months with the highest UV index in Jakarta, Indonesia, are January through April, August through December, with an average maximum UV index of 12.

How high is the UV index in September in Jakarta?

In September, the average daily maximum UV index in Jakarta, Indonesia, is 12. A UV Index reading of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV rays.
Average temperature in September - Jakarta, Indonesia
  • Average high temperature in September: 33°C

The warmest month (with the highest average high temperature) is September (33°C).
The month with the lowest average high temperature is January (29.9°C).

  • Average low temperature in September: 25.5°C

Months with the highest average low temperature are September and October (25.5°C).
The coldest month (with the lowest average low temperature) is January (24.2°C).

Average humidity in September - Jakarta, Indonesia
  • Average humidity in September: 75%

Months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is September (75%).

Average rainfall in September - Jakarta, Indonesia
  • Average rainfall in September: 64mm

The wettest month (with the highest rainfall) is January (402mm).
The driest month (with the lowest rainfall) is July (58mm).

Average rainfall days in September - Jakarta, Indonesia
  • Average rainfall days in September: 6 days

The month with the highest number of rainy days is January (19 days).
The month with the lowest number of rainy days is August (5 days).

Average sea temperature in September - Jakarta, Indonesia
  • Average sea temperature in September: 29°C

Best months for swimming (with the highest average sea temperature) are April and May (30°C).
Coldest months (with the lowest average sea temperature) are January and February (28°C).

Average daylight in September / Average sunshine in September - Jakarta, Indonesia
  • Average daylight in September: 12.1h

The month with the longest days is December (Average daylight: 12.5h).
Months with shortest days are May, June and July (Average daylight: 11.8h).

  • Average sunshine in September: 9.7h

The month with most sunshine is September (Average sunshine: 9.7h).
The month with least sunshine is January (Average sunshine: 6.1h).

Average UV index in September - Jakarta, Indonesia
  • Average UV index in September: 12

Months with the highest UV index are January, February, March, April, August, September, October, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 10).