Siem Reap monthly weather averages

  • Average temperature

    The bar chart below shows the average monthly temperatures at Siem Reap

    Siem Reap average temperature chart
    Average monthly temperatures in Siem Reap
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 25.2 27.4 29.3 30 29.4 28.7 28.1 27.9 27.6 27 26.2 25
    °F 77.4 81.3 84.7 86 84.9 83.7 82.6 82.2 81.7 80.6 79.2 77

    Please note: these are the average temperatures taken over a 24 hour period so do not show daytime / night highs and lows. For more accurate daytime temperatures have a look at the temperature max / min chart below.

  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in Siem Reap

    Average daily sunshine Siem Reap
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 9.6 9.4 8.9 8.5 7.4 6.1 6 5.7 5.6 7.2 8.6 9.3
  • Day / night temperatures

    The graph below shows the daily range of temperatures for each month.

    Maximum and minimum daily temperatures in Siem Reap
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C 19.1 21.1 23.1 24.1 24.6 24.5 24.3 24 24 23.5 22 19.7
    Max °C 31.4 33.7 35.5 36 34.2 33 31.9 31.8 31.3 30.6 30.5 30.4
    Min °F 66.3 70 73.6 75.3 76.3 76 75.7 75.2 75.1 74.2 71.5 67.4
    Max °F 77.4 81.3 84.7 86 84.9 83.7 82.6 82.2 81.7 80.6 79.2 77
  • Average rainfall & rainy days

    The graph below shows the average rainfall and number of rainy days per month.

    Average monthly rainfall in Siem Reap
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 1 9 28 64 146 166 186 224 250 215 61 7
    inches 0 0.4 1.1 2.5 5.7 6.6 7.3 8.8 9.8 8.5 2.4 0.3
    Rainy days 1 2 4 7 15 15 18 18 18 15 6 2
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Siem Reap
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 26.7 26.9 27.8 29 29.9 29.7 29.3 29.2 29 28.9 28.5 27.4
    °F 80 80.4 82 84.2 85.7 85.5 84.8 84.5 84.3 84 83.2 81.3
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Siem Reap
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 6 5 6 6 6 7 7 7 5 6 7 6
    mph 4 3 4 4 4 4 4 4 3 4 4 4

    A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

  • Relative humidity

    The graph below shows the average rainfall.

    Average relative humidity in Siem Reap
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    70% 68% 67% 71% 79% 81% 83% 84% 84% 83% 80% 80%

Other monthly averages

Siem Reap weather stats

Siem Reap weather statistics
Hottest month: April 30°C
Driest month: January 1mm
Sunniest month: January 9.6hrs
Coldest month: December 25°C
Wettest month: September 250mm
Warmest sea: May 29.9°C
Map showing location of Siem Reap (13.36179, 103.86056)

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