Annual mean 28°C · wettest around July · prevailing wind S
Warmest
34.1 °C
Coldest
28.9 °C
Wettest
33%
Windiest
3.3 m/s
Prevailing
S
2.3 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Siem Reap over the whole year is 28°C. April is the hottest month, with highs of about 34°C; January is the coldest, with lows of about 23°C. Siem Reap has no sharply defined rainy season: the chance of rain on a given day runs from 5% in January, the driest month, to 19% in July, the wettest. Winds in Siem Reap are highest in August, averaging 2.0 m/s (7 km/h), and lightest in January, at 1.4 m/s (5 km/h). The prevailing wind is from the S. The clearest skies in Siem Reap come in February, when the sky is typically 33% covered; September is the cloudiest month, at 63%.
Month by month Siem Reap climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
30°C
23°C
30°C
5%
38%
1.4 m/s
24
67
7
February
31°C
24°C
32°C
5%
33%
1.6 m/s
13
57
2
March
33°C
26°C
35°C
6%
40%
1.5 m/s
5
34
0
April
34°C
27°C
36°C
8%
44%
1.5 m/s
4
25
0
May
33°C
27°C
36°C
12%
53%
1.5 m/s
5
20
0
June
32°C
27°C
35°C
14%
55%
1.7 m/s
6
21
1
July
31°C
26°C
34°C
19%
60%
1.9 m/s
7
32
0
August
32°C
26°C
35°C
12%
59%
2.0 m/s
4
33
0
September
30°C
26°C
34°C
15%
63%
1.7 m/s
8
36
1
October
30°C
25°C
33°C
12%
57%
1.5 m/s
11
38
3
November
30°C
24°C
33°C
12%
49%
1.4 m/s
14
47
3
December
29°C
23°C
30°C
5%
42%
1.5 m/s
28
61
9
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Siem Reap weather by season
Year round, Siem Reap has days of about 29°C at their warmest in December, its coolest month, and 34°C in April, its warmest; the coolest hours of the day run from 23°C to 27°C through the year, and the average temperature over the year is 28°C around the clock. Rain is most likely around July and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Siem Reap weather in winterDecember to February
High 30°CLow 23°CRain 5%
Winter in Siem Reap has typical daily highs of about 30°C and lows of about 23°C, with a 5% chance of rain on a given day.
Siem Reap weather in springMarch to May
High 33°CLow 26°CRain 9%
Spring in Siem Reap has typical daily highs of about 33°C and lows of about 26°C, with a 9% chance of rain on a given day.
Siem Reap weather in summerJune to August
High 32°CLow 26°CRain 15%
Summer in Siem Reap has typical daily highs of about 32°C and lows of about 26°C, with a 15% chance of rain on a given day.
Siem Reap weather in autumnSeptember to November
High 30°CLow 25°CRain 13%
Autumn in Siem Reap has typical daily highs of about 30°C and lows of about 25°C, with a 13% chance of rain on a given day.
When is the rainy season in Siem Reap?
Siem Reap has no sharply defined rainy season: the chance of rain on a given day runs from 5% in January, the driest month, to 19% in July, the wettest.
What time of year is Siem Reap windiest?
Winds in Siem Reap are highest in August, averaging 2.0 m/s (7 km/h), and lightest in January, at 1.4 m/s (5 km/h). The prevailing wind is from the S.
What is the average temperature in Siem Reap year round?
The average temperature in Siem Reap over the whole year is 28°C. April is the hottest month, with highs of about 34°C; January is the coldest, with lows of about 23°C.