August weather forecast
Phnom Penh, Cambodia

August in Phnom Penh continues to bear the brunt of heavy monsoon rains, which marginally ebb to a still substantial 172mm (6.77") of rainfall. Downpours become a near-daily occurrence, captivating visitors with the city's ability to thrive and adapt to the water. Relative humidity retains a high of 81% adding to the overall wetness experienced in this month. Despite the ample cloud cover, the UV index remains at 12, making sunscreen a daily essential. Lending itself to the local adage that the fish get bigger during the monsoon, the city gives itself over to lush growth and full waterways.

Temperature

With the onset of August, the average high-temperature in Phnom Penh stands at a still tropical 32.5°C (90.5°F), in line with the previous month's conditions. Phnom Penh, during the month of August, experiences an average low-temperature of 24.6°C (76.3°F).

Heat index

August's heat index is evaluated at a blazing hot 47°C (116.6°F). Keep alert: Heat cramps and heat exhaustion are probable. Heatstroke is a potential danger with continued physical activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in August is 81%.

Rainfall

In Phnom Penh, during August, the rain falls for 21.4 days and regularly aggregates up to 172mm (6.77") of precipitation. Throughout the year, in Phnom Penh, there are 153.4 rainfall days, and 1636mm (64.41") of precipitation is accumulated.

Daylight

In Phnom Penh, the average length of the day in August is 12h and 30min.
On the first day of the month, sunrise is at 05:48 and sunset at 18:25. On the last day of August, in Phnom Penh, sunrise is at 05:50 and sunset at 18:11 +07.

Sunshine

In August, the average sunshine is 5.6h.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In August, the maximum UV index of 12 transforms into these recommendations:
Execute all vital precautions. Preventing sun damage is of utmost importance. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise.