Phnom Penh weather in October
Temperature, rain and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Poor
Best time to visit: December – January
What is the weather like in Phnom Penh in October?
In October, Phnom Penh is hot: daytime highs average 30 °C, and even at night it stays warm at around 24 °C. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 25 days, totalling 243 mm. On about 22 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is not an ideal month for a holiday in Phnom Penh.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 30 | 35 | 50 |
| Day | 31° | 30° | 30° |
| Night | 25° | 24° | 24° |
| Sun | 5 h | 5 h | 6 h |
| Rain days | 27 | 25 | 13 |
More details for October
- Daylight
- 11 h 53 min05:49 – 17:43
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 83 %on averageAll months
- Hot days
- 22 days30 °C or moreAll months
- Time zone
- UTC+7Asia/Phnom_Penh
How the score comes together
- Temperatureweight 50 %58 %
- Sunshineweight 20 %33 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Phnom Penh in October: quick answers
Is Phnom Penh hot in October?
Yes. In October, Phnom Penh is hot: daytime highs average 30 °C and nights stay around 24 °C. On about 22 days the thermometer climbs to 30 °C or more.
Does it rain much in Phnom Penh in October?
It rains often – on about 25 days, adding up to 243 mm.
Phnom Penh month by month
The whole year in Phnom PenhAll destinations: CambodiaWhere to go in October
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences