Where to Go for Great Weather
Cambodia · Siem Reap · December

Siem Reap in Decemberhow the month reads

December is one of the strongest months for Siem Reap inside Cambodia, with cooler than the yearly mean by 2.1°C. The safety bulletins below apply.

Rank
3 of 12
Score
75/100
December match
75/100

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What’s open · December

Things to do in Siem Reap in December

  • At its best
    Angkor

    the dry season — clear skies, lower humidity and temperatures between about 22 and 36 °C, with January and February the pick

    Sources: asiaodysseytravel.com, indochinatour.com

Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.

  • Temperature
    31°C
    −2.1°C vs. yearly mean
  • Month rank
    3 of 12
    for Siem Reap
  • Best months
    January · November · December
    highest regional score
12-month temperature · Siem Reap

December in context

Temperature°C
Temperature · 12-month climatologySiem Reap, Cambodia — December. Average daytime high by month in °C. Lowest in December (30.7), highest in April (35.7). Monthly means: 31.7, 33.4, 35.0, 35.7, 34.4, 33.5, 32.3, 32.5, 31.4, 31.4, 31.3, 30.7.
View data table
MonthAverage daytime high (°C)
January31.7
February33.4
March35.0
April35.7
May34.4
June33.5
July32.3
August32.5
September31.4
October31.4
November31.3
December30.7
Safety · 4 governments

What the governments say about Cambodia

Combined advisory · most-cautious-wins
Exercise increased caution
Highest level across 4 governments · Advisory last changed
See breakdown by country
AU

Exercise increased caution

Changed Checked www.smartraveller.gov.au
DE

Exercise normal precautions

Changed Checked www.auswaertiges-amt.de
US

Exercise increased caution

Changed Checked travel.state.gov

Parts of Cambodia carry a higher advisory — up to level 4, "Do not travel". The governments concerned name a region rather than a boundary, so the carve-out is not drawn on the map and is not reflected in the combined level above. Follow the source links for where it applies.

← Earlier
November

31°C in Nov

Later →
January

32°C in Jan

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Plan a December trip to Siem Reap.

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