Phnom Penh
Cambodia
Long-term weather forecast
Long-term weather forecast
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December weather forecast and Climate
Phnom Penh, Cambodia

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The buildings in the Royal Palace-yard in Phnom Penh, Cambodia
The buildings in the Royal Palace-yard in Phnom Penh, Cambodia
  • The average high temperature in December: 30.1°C

Warmest months (with the highest average high temperature) are March and April (34.9°C).
The month with the lowest average high temperature is November (29.9°C).

  • The average low temperature in December: 21.7°C

The month with the highest average low temperature is May (25.3°C).
The coldest month (with the lowest average low temperature) is December (21.7°C).

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  • The average humidity in December: 73%

Months with the highest relative humidity are September and October (84%).
Months with the lowest relative humidity are February and March (71%).

  • The average rainfall in December: 80.3mm

The wettest month (with the highest rainfall) is October (318.9mm).
The driest month (with the lowest rainfall) is February (11.5mm).

  • The average rainfall days in December: 4.8 days

The month with the highest number of rainy days is October (24 days).
The month with the lowest number of rainy days is February (2.4 days).

  • The average daylight in December: 11h

Months with the longest days are May, June and July (Average daylight: 13h).
The month with shortest days is December (Average daylight: 11h).

  • The average sunshine in December: 7.8h

The month with most sunshine is March (Average sunshine: 8.6h).
The month with least sunshine is September (Average sunshine: 4.3h).

  • The average UV index in December: 10

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

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