5-day weather forecast Phnom Penh Oct 21, 2026

32°26° · Overcast

Weather forecast Phnom Penh tomorrow Oct 21, 2026: overcast, temperature from 26 °C to 32 °C.

Precipitation probability 79%. Wind up to 2.81 m/s (gusts 6.81 m/s). Air humidity 59–90%, atmospheric pressure 757–761 mm Hg, UV index up to 10.7.

Sunrise 05:50
Sunset 17:39
Waxing Gibbous86% illuminated
Moonrise 14:24 · Moonset 01:41
Chart
Table

Forecast from 26 °C to 32 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)262626262626262728293031323131313030292828272727
Precipitation (mm/hr)0000000002.031.31.592.311.762.91.612.040.933.582.140.0800.410.32

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)9610010010010092802255988858210090100100100100100100100100100
Rain chance (%)25272829292725128585757596066606658797433265855

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)2.812.612.312.1121.310.6111.391.810.390.310.891.311.811.691.110.390.611.521.611.612.39
Wind gust (m/s)5.54.614.223.52.921.390.721.115.394.810.610.516.316.811.811.140.920.811.52.221.812.033.5
Wind direction (°)S 189°SSW 203°SSW 197°SSW 195°SSW 192°S 190°SSW 204°SW 229°SSW 207°S 190°ESE 105°ENE 63°W 275°NW 309°N 354°NNE 20°NNE 33°NNE 14°NE 50°E 96°SE 137°S 172°WSW 251°W 275°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)858788899090908477726661596060646871777982848487

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)760759758758758758759760760761761760759758758757757758758758759760760760

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index00000000.31.6479.710.79.873.210.2000000

Air quality & pollen

Air quality
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
PM2.5 (µg/m³)13.112.71212.112.513.9191614.213.110.58.88.37.7777.1816.918.512.58.68.68.8
PM10 (µg/m³)13.412.912.312.312.814.119.316.214.413.310.89.39.18.57.98.18.79.618.519.713.49.199.2
Ozone (O₃) (µg/m³)74737167656260637693105105989290888370544240434545
NO₂ (µg/m³)7.36.86.66.56.67.2886.43.92.11.51.51.61.10.62.17.815.519.717.111.16.55.2
SO₂ (µg/m³)6.36.56.35.95.65.55.55.65.8665.44.53.83.53.43.54.155.34.53.12.11.8
CO (µg/m³)592546508473460494550567507407326281254245256285331415515564515416343336

Phnom Penh on the map

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.