July weather forecast
Phnom Penh, Cambodia

In Phnom Penh, July brings the heaviest showers of the year with an impressive 196mm (7.72") of rainfall on average. Sunlight is somewhat scarce, gracing the city for an average of only 4.6 hours per day. This month is characterized by intense bouts of rain that clear as abruptly as they arrive. High temperatures continue to linger, and the relative humidity peaks at 80%. The constant pattern of sun, humidity and rain offers an authentic glimpse into the tropical climate.

Temperature

With July's arrival, Phnom Penh's weather records an average high-temperature of a still tropical 32.5°C (90.5°F), marking little difference from June's 33.5°C (92.3°F). Phnom Penh registers a consistent average low-temperature of 24.7°C (76.5°F) during July.

Heat index

July's average heat index is evaluated at a life-threatening hot 46°C (114.8°F). Prudent: Heat cramps and heat exhaustion are likely. Heatstroke becomes imminent with sustained exertion.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In Phnom Penh, the average relative humidity in July is 80%.

Rainfall

In Phnom Penh, during July, the rain falls for 19.6 days and regularly aggregates up to 196mm (7.72") of precipitation. In Phnom Penh, during the entire year, the rain falls for 153.4 days and collects up to 1636mm (64.41") of precipitation.

Daylight

The average length of the day in July is 12h and 44min.
On the first day of the month, sunrise is at 05:40 and sunset at 18:28. On the last day of July, sunrise is at 05:47 and sunset at 18:25 +07.

Sunshine

In Phnom Penh, the average sunshine in July is 4.6h.

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 value of 11, and more, symbolizes an ultimate health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index, 12 in July, converts into the following recommendations:
Undertake all key precautions, as unprotected skin and eyes may get burns in no time. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. 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.