Singapore
Singapore
Long-term weather forecast
Long-term weather forecast

December weather forecast and Climate
Singapore, Singapore

The colorful night skyline of Singapore city in Singapore, a beautiful view of the skyscrapers against the bright sky
The colorful night skyline of Singapore city in Singapore, a beautiful view of the skyscrapers against the bright sky
December is the wettest month of the year as it withstands the worst of the northeast monsoon and rain accumulates up to 12.5" (317.5mm) in the space of 18 rainy days. It is unbearable for visitors with the highest humidity of the year at 87% and the average temperatures in the 75°F (23.9°C) to 86°F (30°C) range.
The sun peeks out of the clouds for a daily 4.5 hours, but exercise caution as the equatorial sun often has a dangerous ultraviolet index of 12.

Keep an eye on the weather for typhoons in December as it sometimes hampers vacation plans. Bring rain protection gear while on Orchard Street, which transforms into a wonderland to enjoy the celebrations of Christmas on this Great Street. When the weather permits, do not miss the Supertree Grove, a landmark in the popular Gardens by the Bay with 18 supertrees to support the skywalk that displays spectacular views of the gardens and Marina Bay.
  • The average high temperature in December: 30°C

The warmest month (with the highest average high temperature) is April (31.7°C).
The month with the lowest average high temperature is December (30°C).

  • The average low temperature in December: 23.5°C

Months with the highest average low temperature are May and June (24.8°C).
The coldest month (with the lowest average low temperature) is January (23.3°C).

  • The average humidity in December: 86.9%

The month with the highest relative humidity is December (86.9%).
Months with the lowest relative humidity are February and July (82.8%).

  • The average rainfall in December: 287.4mm

The wettest month (with the highest rainfall) is December (287.4mm).
The driest month (with the lowest rainfall) is July (158.7mm).

  • The average rainfall days in December: 19 days

Months with the highest number of rainy days are November and December (19 days).
The month with the lowest number of rainy days is February (11 days).

  • The average sea temperature in December: 29°C

Best months for swimming (with the highest average sea temperature) are May and June (30.1°C).
The coldest month (with the lowest average sea temperature) is January (27.6°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: 4.3h

The month with most sunshine is February (Average sunshine: 6.5h).
Months with least sunshine are November and December (Average sunshine: 4.3).

  • The average UV index in December: 12

Months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 11).

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