Phnom Penh, Cambodia: Annual Weather Averages

April is the hottest month in Phnom Penh with an average temperature of 30.5°C (87°F) and the coldest is January at 26°C (79°F) with the most daily sunshine hours at 8 in December. The wettest month is September with an average of 60mm of rain. .

Average Temperature: Phnom Penh

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 26 27 29 31 30 29 28 29 28 27 27 26
°F 79 81 83 87 86 83 82 84 82 81 80 79

Average High/Low Temperature: Phnom Penh

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High °C 31 32 34 35 34 33 32 32 31 30 30 30
Low °C 21 22 23 26 26 24 24 26 25 24 23 22
High °F 88 90 93 95 93 91 90 90 88 86 86 86
Low °F 70 72 73 79 79 75 75 79 77 75 73 72

Average Rainfall: Phnom Penh

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 10 20 10 10 20 20 40 40 60 50 40 10
Days 1 1 2 5 13 12 13 14 15 12 5 2

Average Daily Sunshine Hours: Phnom Penh

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hours 8 8 8 8 8 7 6 6 6 6 6 8

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