Phnom Penh weather in October
In October, Phnom Penh has an average high of 30 °C86 °F and an average low of 24 °C75 °F, with about 168 mm6.6 in of precipitation. It is the 10th warmest month of the year and ranks 3rd for precipitation.
How October compares with other months
Compared with September, October is about the same temperature and drier by 22 mm0.9 in. Compared with November, October is about the same temperature and wetter by 78 mm3.1 in. Daylight lasts about 11.9 hours around the middle of the month. Average relative humidity is 86% and the average cloud amount 81%.
Is October a good time to visit Phnom Penh?
October is not among the most comfortable months by our comfort score: it is hot (average high 30 °C86 °F), it is fairly wet (168 mm6.6 in) and it is humid (86%). The most comfortable months in Phnom Penh are December.
What to wear in October
For Phnom Penh in October, pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
October in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Phnom Penh | 3086 | 2475 | 1686.6 |
| Takeo | 3086 | 2475 | 1716.7 |
| Tân Châu | 3086 | 2475 | 1716.7 |
| Hồng Ngự | 3086 | 2474 | 1837.2 |
| Tịnh Biên | 3085 | 2475 | 1756.9 |
| Hòa Thành | 3087 | 2374 | 1867.3 |
| Hà Tiên | 2984 | 2578 | 2188.6 |
| Long Xuyên | 3086 | 2475 | 1887.4 |
| Trảng Bàng | 3086 | 2374 | 2038.0 |
Other months in Phnom Penh
- January34 °C93 °F / 22 °C71 °F
- February36 °C97 °F / 23 °C74 °F
- March37 °C99 °F / 25 °C77 °F
- April36 °C98 °F / 26 °C79 °F
- May34 °C93 °F / 25 °C78 °F
- June31 °C89 °F / 24 °C76 °F
- July31 °C87 °F / 24 °C75 °F
- August30 °C87 °F / 24 °C75 °F
- September30 °C86 °F / 24 °C75 °F
- October30 °C86 °F / 24 °C75 °F
- November31 °C87 °F / 23 °C73 °F
- December32 °C89 °F / 22 °C71 °F
Frequently asked questions
How warm is Phnom Penh in October?
In October the average high in Phnom Penh is 30 °C (86 °F) and the average low is 24 °C (75 °F).
Does it rain a lot in Phnom Penh in October?
On average about 168 mm (6.6 in) of precipitation falls in October; it ranks 3rd of the 12 months.
Is October the warmest month in Phnom Penh?
No. The warmest month in Phnom Penh is March, with an average high of 37 °C (99 °F). The coldest month is December, with an average low of 22 °C (71 °F).
How long is the day in Phnom Penh in October?
In the middle of October the day in Phnom Penh lasts about 11.9 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Phnom Penh in October?
The average relative humidity in October is about 86%. Combined with warm days, it can feel muggy.
How cloudy is Phnom Penh in October?
On average about 81% of the sky is covered by cloud in October. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.