July weather forecast
Phnom Penh, Cambodia

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The buildings in the Royal Palace-yard in Phnom Penh, Cambodia
The buildings in the Royal Palace-yard in Phnom Penh, Cambodia

Weather in July

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.

Frequently asked questions

How hot is it in Phnom Penh in July?

The high-temperature, in July, in Phnom Penh, records 32.5°C (90.5°F), while the low-temperature is 24.7°C (76.5°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is evaluated at 46°C (114.8°F).

What is the average humidity in July in Phnom Penh?

The average relative humidity in July is 80%.

How many days does it rain in July in Phnom Penh?

In July, in Phnom Penh, Cambodia, the rain falls for 19.6 days. Throughout July, 196mm (7.72") of precipitation is accumulated.

What is the average length of the day in July in Phnom Penh?

In Phnom Penh, the average day length in July is 12h and 44min.

When is the sunrise / sunset in July in Phnom Penh?

On the first day of July in Phnom Penh, sunrise is at 05:40 and sunset at 18:28. On the last day of the month, sunrise is at 05:47 and sunset at 18:25 +07.

How many hours of sunshine does Phnom Penh have in July?

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

What are the months with the highest UV index in Phnom Penh?

February through October, with an average maximum UV index of 12, are months with the highest UV index in Phnom Penh, Cambodia.

What is the UV index reading in July in Phnom Penh?

In Phnom Penh, Cambodia, the average daily maximum UV index in July is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in July
Phnom Penh, Cambodia

Average temperature in July - Phnom Penh, Cambodia
  • Average high temperature in July: 32.5°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 July: 24.7°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 July
Phnom Penh, Cambodia

Average humidity in July - Phnom Penh, Cambodia
  • Average humidity in July: 80%

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 July
Phnom Penh, Cambodia

Average rainfall in July - Phnom Penh, Cambodia
  • Average rainfall in July: 195.9mm

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 July
Phnom Penh, Cambodia

Average rainfall days in July - Phnom Penh, Cambodia
  • Average rainfall days in July: 19.6 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 July /
Average sunshine in July
Phnom Penh, Cambodia

Average daylight in July / Average sunshine in July - Phnom Penh, Cambodia
  • Average daylight in July: 12h and 4min

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 July: 4h and 4min

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 July
Phnom Penh, Cambodia

Average UV index in July - Phnom Penh, Cambodia
  • Average UV index in July: 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).

Phnom Penh, Cambodia

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