Phnom Penh monthly weather averages

  • Average temperature

    The bar chart below shows the average monthly temperatures at Phnom Penh

    Phnom Penh average temperature chart
    Average monthly temperatures in Phnom Penh
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 26.4 27.2 28.6 29.2 29.2 28.6 28.1 28.1 27.8 27.5 26.7 25.9
    °F 79.5 81 83.5 84.6 84.6 83.5 82.6 82.6 82 81.5 80.1 78.6

    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 Phnom Penh

    Average daily sunshine Phnom Penh
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 9.4 9.3 8.8 8.3 7.2 6.3 5.8 5.7 5.3 6.8 8.2 9.1
  • Day / night temperatures

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

    Maximum and minimum daily temperatures in Phnom Penh
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C 21.1 22.2 23.3 24 24.5 24.4 24.5 24.5 24.5 24.4 23.3 21.7
    Max °C 31.7 32.3 33.9 34.5 34 32.8 31.8 31.8 31.2 30.6 30.1 30.1
    Min °F 70 71.9 73.9 75.1 76 75.9 76 76 76 75.9 73.9 71.1
    Max °F 79.5 81 83.5 84.6 84.6 83.5 82.6 82.6 82 81.5 80.1 78.6
  • Average rainfall & rainy days

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

    Average monthly rainfall in Phnom Penh
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 6 8 29 68 166 156 149 162 245 263 115 27
    inches 0.2 0.3 1.1 2.7 6.5 6.1 5.9 6.4 9.6 10.3 4.5 1.1
    Rainy days 1 1 3 6 15 15 17 16 19 17 9 4
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Phnom Penh
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 27.3 27.7 28.6 29.8 30.4 29.9 29.3 29 29 28.9 28.6 27.8
    °F 81.2 81.8 83.4 85.6 86.7 85.8 84.7 84.3 84.1 84 83.4 82.1
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Phnom Penh
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 9 9 10 9 6 9 9 9 8 8 9 10
    mph 5 5 6 6 4 6 6 6 5 5 6 6

    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 Phnom Penh
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    71% 69% 69% 72% 80% 80% 82% 82% 84% 86% 79% 75%

Other monthly averages

Phnom Penh weather stats

Phnom Penh weather statistics
Hottest month: April 29.2°C
Driest month: January 6mm
Sunniest month: January 9.4hrs
Coldest month: December 25.9°C
Wettest month: October 263mm
Warmest sea: May 30.4°C
Map showing location of Phnom Penh (11.56245, 104.91601)

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