July weather forecast and climate
Phnom Penh, Cambodia

July, like June, is a hot summer month in Phnom Penh, Cambodia, with temperature in the range of an average high of 32.5°C (90.5°F) and an average low of 24.7°C (76.5°F).

Temperature

In Phnom Penh, the average high-temperature is almost the same as in June - a still tropical 32.5°C (90.5°F). In July, the average low-temperature is 24.7°C (76.5°F).

Heat index

The average heat index is evaluated at a blazing hot 46.2°C (115.2°F). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, wind, metabolic differences, and differences in body mass, height, and shape affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in Phnom Penh, Cambodia, is 80%.

Rainfall

In Phnom Penh, during July, the rain falls for 19.6 days and regularly aggregates up to 195.9mm (7.7") of precipitation. In Phnom Penh, during the entire year, the rain falls for 153.4 days and collects up to 1635.6mm (64.4") of precipitation.

Daylight

In Phnom Penh, the average length of the day in July is 12.7h.

Sunshine

The average sunshine in Phnom Penh is 4.6h.

UV index

Months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an excessive health risk from the exposure to the Sun's UV radiation for the average person.
Note: In July, the average maximum UV index of 12 translate into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.