October weather forecastPhnom Penh, Cambodia

October
Weather in October
October in Phnom Penh is a month of transition, signaled by a considerable decrease in rainfall to 319mm (12.56"). The presence of sunlight in the city increases to 6.5 hours per day, making the landscape all the more enticing after the withdrawal of the monsoon. The weather sees a change of pace, with fewer showers and the return of more consistent, warmer days. Albeit high, the humidity begins to display a slight decrease towards the latter part of the month. The respite from rains coupled with the warmth, results in a pleasant and inviting atmosphere to explore Phnom Penh.Temperature
The average high-temperature during October registers at a still hot 31.1°C (88°F), maintaining a close resemblance to the previous month. During the month of October, Phnom Penh experiences a steady low-temperature average of 23.8°C (74.8°F).Heat index
In October, the average heat index is evaluated at a blistering 43°C (109.4°F). Guard: Heat exhaustion and heat cramps are foreseeable. Prolonged effort may bring about heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
The months with the highest humidity in Phnom Penh, Cambodia, are September and October, with an average relative humidity of 84%.Rainfall
October is the month with the most rainfall in Phnom Penh. Rain falls for 24 days and accumulates 319mm (12.56") of precipitation.Daylight
The average length of the day in October in Phnom Penh, Cambodia, is 11h and 53min.On the first day of October in Phnom Penh, sunrise is at 05:49 and sunset at 17:50. On the last day of the month, sunrise is at 05:52 and sunset at 17:35 +07.
Sunshine
The average sunshine in October in Phnom Penh is 6.5h.UV index
The months with the highest UV index in Phnom Penh are February through October, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In October, the maximum UV index of 12 transforms into these recommendations:
Take every essential safety procedure. Individuals with fair skin could sustain burns in less than 5 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Frequent reapplication of a broad-spectrum SPF 30+ sunscreen is vital every two hours or directly after a swim or an outdoor workout.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Phnom Penh, Cambodia
- Average high temperature in October: 31.1°C
The warmest months (with the highest average high temperature) are March and April (34.9°C).
The month with the lowest average high temperature is November (29.9°C).
- Average low temperature in October: 23.8°C
The month with the highest average low temperature is May (25.3°C).
The coldest month (with the lowest average low temperature) is December (21.7°C).
Average humidity in October
Phnom Penh, Cambodia
- Average humidity in October: 84%
The months with the highest relative humidity are September and October (84%).
The months with the lowest relative humidity are February and March (71%).
Average rainfall in October
Phnom Penh, Cambodia
- Average rainfall in October: 318.9mm
The wettest month (with the highest rainfall) is October (318.9mm).
The driest month (with the least rainfall) is February (11.5mm).
Average rainfall days in October
Phnom Penh, Cambodia
- Average rainfall days in October: 24 days
The month with the highest number of rainy days is October (24 days).
The month with the least rainy days is February (2.4 days).
Average daylight in October /
Average sunshine in October
Phnom Penh, Cambodia
- Average daylight in October: 11h and 54min
The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in October: 6h and 30min
The month with the most sunshine is March (Average sunshine: 8h and 36min).
The month with the least sunshine is September (Average sunshine: 4h and 18min).
Average UV index in October
Phnom Penh, Cambodia
- Average UV index in October: 12
The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The months with the lowest UV index are January, November and December (UV index 10).





