When to go · Cambodia

When to go to Phnom Penh

Twelve months of averages for Phnom Penh, and what they say about when to go.

Photo: KY Geologist · CC BY 2.0 · Wikimedia Commons

When to go

What the averages say

Mean daily highs and lows and the month's rain, averaged over 2001 to 2020.

On these averages, Phnom Penh has a mean high between 18°C and 32°C and under 150 mm of rain in November.

Hot months (a mean high of 32°C or more): December to June.
Wet months (150 mm of rain or more): June to October.
Humid months (a high of 25°C or more with relative humidity of 70% or more): May to December.
The warmest month is March (37°C) and the coolest October (30°C). The wettest is June (190 mm) and the driest February (11 mm); about 1,242 mm of rain falls in a year.

How these sentences are worded

Each sentence is written from the figures by fixed rules, and says no more than they do. Mild to warm: a mean daily high from 18°C up to 32°C. Hot: 32°C or more. Cool: 10°C up to 18°C. Cold: under 10°C. Dry: under 50 mm of rain in the month; wet: 150 mm or more. Humid: a high of 25°C or more with relative humidity of 70% or more. A month is described as good for going when it is mild to warm and not wet.

Phnom Penh: highs, lows and rainHighLowRain

The year at a glance

Mild to warm and dry
Mild to warm, humid or showery
Hot
Cool
Wet
Cold

JanHot
FebHot
MarHot
AprHot
MayHot
JunWet
JulWet
AugWet
SeptWet
OctWet
NovMild–warm, mixed
DecHot

Month by month

Every month in Phnom Penh

The whole year, with humidity, cloud and the sunlight reaching the ground.

Climate in Phnom Penh by month: mean daily high and low, rain, and what the month is like
Month	High	Low	Rain	Humidity	Cloud	Sunlight (kWh/m²/day)	High in Dubai	What it is like
January	34°C	22°C	16 mm	61%	51%	5.2	23°C	Hot
February	36°C	23°C	11 mm	53%	46%	5.6	24°C	Hot
March	37°C	25°C	30 mm	54%	56%	5.6	27°C	Hot
April	37°C	26°C	62 mm	60%	67%	5.7	31°C	Hot
May	34°C	25°C	129 mm	74%	83%	5.6	35°C	Hot
June	32°C	25°C	190 mm	82%	85%	5.3	37°C	Wet
July	31°C	24°C	163 mm	84%	88%	5	39°C	Wet
August	30°C	24°C	167 mm	85%	90%	4.9	39°C	Wet
September	30°C	24°C	190 mm	86%	90%	4.8	37°C	Wet
October	30°C	24°C	167 mm	86%	81%	4.9	34°C	Wet
November	31°C	23°C	89 mm	82%	71%	5	29°C	Mild to warm, humid or showery
December	32°C	22°C	28 mm	71%	63%	5.1	25°C	Hot

The Dubai column is Dubai's mean daily high, for comparison.

Modelled averages for an area about 50 km across, not a weather station's record: NASA POWER climatology, 2001–2020. These data were obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program.

When to go nearby

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Plan a trip to Phnom Penh

Tell us when and who is travelling, and a person puts the flights, the stays and the rest into one quote.

Plan a trip to Phnom Penh More about Phnom Penh When to go

Month

High

Low

Rain

Humidity

Cloud

Sunlight (kWh/m²/day)

High in Dubai

What it is like

January

34°C

22°C

16 mm

61%

51%

5.2

23°C

Hot

February

36°C

23°C

11 mm

53%

46%

5.6

24°C

Hot

March

37°C

25°C

30 mm

54%

56%

5.6

27°C

Hot

April

37°C

26°C

62 mm

60%

67%

5.7

31°C

Hot

May

34°C

25°C

129 mm

74%

83%

5.6

35°C

Hot

June

32°C

25°C

190 mm

82%

85%

5.3

37°C

Wet

July

31°C

24°C

163 mm

84%

88%

39°C

Wet

August

30°C

24°C

167 mm

85%

90%

4.9

39°C

Wet

September

30°C

24°C

190 mm

86%

90%

4.8

37°C

Wet

October

30°C

24°C

167 mm

86%

81%

4.9

34°C

Wet

November

31°C

23°C

89 mm

82%

71%

29°C

Mild to warm, humid or showery

December

32°C

22°C

28 mm

71%

63%

5.1

25°C

Hot