Phnom Penh, Cambodia Weather

Phnom Penh,  Weather
(Photo by SCREEN POST on Unsplash)

Current conditions

Updated:
25°C
77.0°F
°C °F

Condition: Drizzle

Pressure: 1,011 hPa

Feel like: 31 °C

Temperature: 25°C

Cloud: 100%

Humidity: 94%

Wind: ESE - 4 km/h

Visibility: 4.42 km

Weather forecast

Sun
20 Sep
24°C / 30°C
Slight Thunderstorm
Mon
21 Sep
24°C / 30°C
Slight Thunderstorm
Tue
22 Sep
24°C / 28°C
Slight Rain Showers
Wed
23 Sep
24°C / 29°C
Slight Thunderstorm
Thu
24 Sep
24°C / 29°C
Drizzle Dense Intensity
Hourly forecast today:
18:00 PM
24° / 25°
24° / 25°
Drizzle
94% 7 km/h
19:00 PM
24° / 24°
24° / 24°
Slight Thunderstorm
98% 12 km/h
20:00 PM
24° / 24°
24° / 24°
Moderate Drizzle
96% 14 km/h
21:00 PM
24° / 24°
24° / 24°
Drizzle
97% 10 km/h
22:00 PM
24° / 24°
24° / 24°
Overcast
96% 7 km/h
23:00 PM
24° / 24°
24° / 24°
Overcast
95% 10 km/h
00:00 AM
24° / 25°
24° / 25°
Overcast
92% 8 km/h
01:00 AM
24° / 26°
24° / 26°
Drizzle
88% 10 km/h
02:00 AM
24° / 27°
24° / 27°
Drizzle
83% 10 km/h
03:00 AM
24° / 28°
24° / 28°
Drizzle
78% 12 km/h
04:00 AM
25° / 30°
25° / 30°
Drizzle
74% 14 km/h

30 Day Averages and Extremes

  • Average high 29.7°C
  • Average low 23.63°C
  • Hottest day 33°C (04 September 2026)
  • Coldest day 0°C (03 October 2026)
  • Average humidity 82.8%
  • Days with precipitation 30 days
  • Highest precipitation 87 mm (21 September 2026)

Yesterday's Data

  • Max: 32°C
  • Min: 25°C
  • Total Precipitation: 11 mm

Temperature and possibility of rain in Phnom Penh over the next 12 hours

Temperature and possibility of rain in Phnom Penh in the coming days

Rainfall in Phnom Penh in the coming days

Phnom Penh Climate Summary

Phnom Penh features a Tropical monsoon (Köppen classification: Am), with an average annual temperature of 29.79ºC (85.62ºF), which is about 0.82% higher than the national average for Cambodia. Annually, the city experiences approximately 89.7 millimeters (3.53 inches) of rainfall, spread across 176.36 rainy days, accounting for 48.32% of the year.

Longitude 11.5563738
Latitude 104.9282099
Yearly high temperature 33.2ºC (91.76ºF)
Yearly low temperature 24.59ºC (76.26ºF)
Hottest month March 36.23ºC (97.21ºF)
Coldest month January 22.34ºC (72.21ºF)
Yearly precip 89.7mm (3.53in)
Days with rainfall 176.36 days (48.32%)
Driest month February (55.62%)
Wettest month September (77.68%)

Weather averages by month

Month High / Low (°C) Rain
January 32.42° / 22.34° 4.45 days
February 34.64° / 23.28° 2.91 days
March 36.23° / 25.57° 7.64 days
April 35.57° / 26.57° 16.09 days
May 35.1° / 26.61° 19.36 days
June 33.31° / 25.44° 18.91 days
July 32.57° / 24.83° 19.27 days
August 32.87° / 25.05° 19.36 days
September 32.21° / 25.06° 24.64 days
October 31.48° / 24.55° 23.18 days
November 31.26° / 23.62° 14.55 days
December 30.74° / 22.22° 6.0 days

Frequently asked questions

1. What is the hottest month in Phnom Penh?

March has the highest average monthly temperature (daily mean of 36.23ºC) and January are the coolest (daily mean of 22.34ºC).

2. What should I wear in Phnom Penh today?

For today's very hot weather in Phnom Penh, with the high temperatures above 32ºC (89.6ºF), consider wearing:
- Sleeveless tops or vests
- Light, natural fabrics (like cotton or linen)
- High SPF sunscreen for outdoor activities
- Broad-brimmed sun hat

Temperature

Early
24°C / 30°C
Morning
25°C / 26°C
Afternoon
25°C / 25°C
Evening
24°C / 24°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 448
  • CO 227
  • NH3 0
  • NO2 5
  • O3 67
  • PM10 7
  • PM25 7
  • SO2 3
  • CH4 1,611

Sunrise / Sunset

22:49
10:57