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

December 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
December in Jakarta is more humid than the past few months, with a high score of 82%. Rainfall rises even further to fall for fourteen days on average throughout the month, and the rain gauge manages to fetch an average of 200.7mm (7.9"). These readings keep growing in the next few weeks as the rainy season progresses. The rainfall may result in floods as it progresses by the day.
The sunshine hours drop to an average of 225 hours during the month, but the sea temperature steadies on at 28°C (82.4°F). Even with the rains, December is still a warm month with warm and pleasant temperatures reading between 26°C (78.8°F) and 30°C (86°F).

What is the temperature in December in Jakarta?

In Jakarta, Indonesia, in December, the average high-temperature is 32°C (89.6°F), and the average low-temperature is 24.9°C (76.8°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), that combines relative humidity and air temperature, in December is calculated to 45.2°C (113.4°F).

What is the average humidity in December in Jakarta?

In Jakarta, the average relative humidity in December is 82%.

How many days does it rain in December in Jakarta?

In December, in Jakarta, Indonesia, the rain falls for 14 days. Throughout December, 204mm (8") of precipitation is accumulated.

What is the water temperature in December in Jakarta?

In December, the average sea temperature 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.

When are the longest days in Jakarta?

With an average of 12.5h of daylight, December has the longest days of the year in Jakarta.

How many hours of daylight does Jakarta have in December?

The average length of the day in December in Jakarta is 12.5h.

How many hours of sunshine does Jakarta have in December?

In December, the average sunshine in Jakarta is 7.1h.

When is the highest UV index in Jakarta?

January through April, August through December, with an average maximum UV index of 12, are months with the highest UV index.

What is the UV index intensity in December in Jakarta?

In December, the average daily maximum UV index is 12. A UV Index value of 11, and more, symbolizes an extreme health threat from unprotected exposure to the UV radiation.
Average temperature in December - Jakarta, Indonesia
  • Average high temperature in December: 32°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 December: 24.9°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 December - Jakarta, Indonesia
  • Average humidity in December: 82%

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

Average rainfall in December - Jakarta, Indonesia
  • Average rainfall in December: 204mm

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

Average rainfall days in December - Jakarta, Indonesia
  • Average rainfall days in December: 14 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 December - Jakarta, Indonesia
  • Average sea temperature in December: 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 December / Average sunshine in December - Jakarta, Indonesia
  • Average daylight in December: 12.5h

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 December: 7.1h

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 December - Jakarta, Indonesia
  • Average UV index in December: 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).