5-day weather forecast Phnom Penh Oct 21, 2026
29°Weather forecast Phnom Penh today Oct 21, 2026: patchy rain possible, temperature from 26 °C to 33 °C.
Precipitation probability 66%. Wind up to 3.11 m/s (gusts 7.31 m/s). Air humidity 52–88%, atmospheric pressure 757–761 mm Hg, UV index up to 10.7.
5 days at a glance — tap a day to open it
Sunrise 05:50
Sunset 17:39
Sunset 17:39
Waxing Gibbous86% illuminated
Moonrise 14:24 · Moonset 01:41
Moonrise 14:24 · Moonset 01:41
Chart
TableWed, Oct 21, 2026
Forecast from 26 °C to 33 °C and precipitation
Cloud cover and precipitation probability
Wind speed and direction
Air humidity
Atmospheric pressure
Ultraviolet index
Air quality & pollen
Wed, Oct 21, 2026
Frequently asked questions about the 5-day weather in Phnom Penh
What will the weather be like in Phnom Penh over the next 5 days?
Over the next 5 days in Phnom Penh the temperature is expected to range from about 25 to 34 °C. See the detailed hourly forecast for each of the 5 days in the charts above.
On which of the next 5 days will it rain in Phnom Penh?
The chance of rain in Phnom Penh over the next 5 days reaches 66%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.
How accurate is the 5-day weather forecast for Phnom Penh?
A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.
Which of the next 5 days in Phnom Penh will be the warmest and which the coolest?
Over the next 5 days the temperature in Phnom Penh ranges from about 25 to 34 °C. Compare the warmest and coolest day on the temperature chart above.
Will it be windy in Phnom Penh over the next 5 days?
Over the next 5 days the wind in Phnom Penh picks up to 5 m/s. The windiest days are easy to spot on the wind chart above.
Which day of the week in Phnom Penh is best for a walk or a trip?
For a walk or a trip, pick the days with the lowest chance of rain (up to 66%) and light wind — easy to compare on the 5-day charts above.
How can I best use the 5-day forecast for Phnom Penh?
The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.
Will I need an umbrella or sunscreen in Phnom Penh this week?
Rain reaches a 66% chance across the next 5 days, so pack something waterproof for the wettest of them — the daily strip above shows which. Today’s UV index peaks at 10.7; sunscreen is worth it from about 3 upwards.
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.