Jakarta
Indonesia
Long-term weather forecast
Long-term weather forecast
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December weather forecast and Climate
Jakarta, Indonesia

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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 in 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)..
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  • The 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).

  • The 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).

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  • The 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%).

  • The 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).

  • The 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).

  • The 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).

  • The average daylight in December: 12h

Months with the longest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12h).
Months with shortest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12h).

  • The 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).

  • The 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).

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