April weather forecast
Phnom Penh, Cambodia

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

Weather in April

April, like March, is a hot spring month in Phnom Penh, Cambodia, with an average temperature ranging between max 34.9°C (94.8°F) and min 25°C (77°F).

Temperature

The warmest months are March and April, with an average high-temperature of 34.9°C (94.8°F).

Heat index

The average heat index in April is estimated at a burning hot 51.7°C (125.1°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, pregnancy, metabolic differences), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Phnom Penh, the average relative humidity in April is 73%.

Rainfall

In April, in Phnom Penh, the rain falls for 8.6 days. Throughout April, 101mm (3.98") of precipitation is accumulated. In Phnom Penh, during the entire year, the rain falls for 153.4 days and collects up to 1635.6mm (64.39") of precipitation.

Daylight

The average length of the day in April is 12h and 23min.
On the first day of the month, sunrise is at 05:57 and sunset at 18:11. On the last day of April, in Phnom Penh, sunrise is at 05:41 and sunset at 18:13 +07.

Sunshine

The average sunshine in April is 8h.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 12 in April transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.
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FAQ

What is the warmest month in Phnom Penh?

Warmest months in Phnom Penh are March and April, with an average high-temperature of 34.9°C (94.8°F).

What is the temperature in April in Phnom Penh?

In Phnom Penh, in April, the average high-temperature is 34.9°C (94.8°F), and the average low-temperature is 25°C (77°F). In April, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is estimated at 51.7°C (125.1°F).

What is the average humidity in April in Phnom Penh?

In April, the average relative humidity in Phnom Penh is 73%.

How much does it rain in Phnom Penh in April?

In Phnom Penh, Cambodia, in April, it is raining for 8.6 days, with typically 101mm (3.98") of accumulated precipitation.

How many hours of daylight does Phnom Penh have in April?

In Phnom Penh, the average day length in April is 12h and 23min.

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

On the first day of April in Phnom Penh, Cambodia, sunrise is at 05:57 and sunset at 18:11. On the last day of the month, sunrise is at 05:41 and sunset at 18:13 +07.

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

In April, the average sunshine duration in Phnom Penh, Cambodia, is 8h.

What is the month 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.

How high is the UV index in April in Phnom Penh?

The average daily maximum UV index in April is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from exposure to the Sun's UV radiation.

Average temperature in April
Phnom Penh, Cambodia

Average temperature in April - Phnom Penh, Cambodia
  • Average high temperature in April: 34.9°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 April: 25°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).

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Average humidity in April
Phnom Penh, Cambodia

Average humidity in April - Phnom Penh, Cambodia
  • Average humidity in April: 73%

The months with the highest relative humidity are September and October (84%).
The months with the lowest relative humidity are February and March (71%).

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Average rainfall in April
Phnom Penh, Cambodia

Average rainfall in April - Phnom Penh, Cambodia
  • Average rainfall in April: 101mm

The wettest month (with the highest rainfall) is October (318.9mm).
The driest month (with the least rainfall) is February (11.5mm).

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Average rainfall days in April
Phnom Penh, Cambodia

Average rainfall days in April - Phnom Penh, Cambodia
  • Average rainfall days in April: 8.6 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).

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Average daylight in April /
Average sunshine in April
Phnom Penh, Cambodia

Average daylight in April / Average sunshine in April - Phnom Penh, Cambodia
  • Average daylight in April: 12h and 23min

The month with the longest days is June (Average daylight: 12h and 47min).
The month with the shortest days is December (Average daylight: 11h and 28min).

  • Average sunshine in April: 8h

The month with the most sunshine is March (Average sunshine: 8.6h).
The month with the least sunshine is September (Average sunshine: 4.3h).

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Average UV index in April
Phnom Penh, Cambodia

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

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