Phnom Penh
Cambodia
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
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
April, the same as March, in Phnom Penh, Cambodia, is a hot spring month, with average temperature fluctuating between 34.9°C (94.8°F) and 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 is calculated to a life-threatening 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. Exposure to direct sunshine can increase heat index values 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 that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels.

Humidity

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

Rainfall

In Phnom Penh, in April, it is raining for 8.6 days, with typically 101mm (4") of accumulated 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, Cambodia, the average length of the day in April is 12.4h.

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 in Phnom Penh. A UV Index of 11, and more, symbolizes an excessive health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: In April, the average maximum UV index of 12 translate into the following recommendations:
Practice all essential precautions. Protection against sun damage is crucial. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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.

What are the warmest months in Phnom Penh?

Warmest months in Phnom Penh, Cambodia, 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 April, in Phnom Penh, the average high-temperature is 34.9°C (94.8°F), and the average low-temperature is 25°C (77°F).

What is the average humidity in April in Phnom Penh?

In Phnom Penh, Cambodia, the average relative humidity in April 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 (4") of accumulated precipitation.

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

In Phnom Penh, the average length of the day in April is 12.4h.

How long on average sun shines in April in Phnom Penh?

The average sunshine in April is 8h.

When is the highest UV index in Phnom Penh?

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

What is the UV index intensity in April in Phnom Penh?

In April, the average daily maximum UV index in Phnom Penh, Cambodia, is 12. A UV Index reading of 11, and higher, represents an extreme health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in April - Phnom Penh, Cambodia
  • Average high temperature in April: 34.9°C

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).

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

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

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 lowest rainfall) is February (11.5mm).

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 lowest number of rainy days is February (2.4 days).

Average daylight in April / Average sunshine in April - Phnom Penh, Cambodia
  • Average daylight in April: 12.4h

The month with the longest days is June (Average daylight: 12.8h).
Months with shortest days are January and December (Average daylight: 11.5h).

  • Average sunshine in April: 8h

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

Average UV index in April - Phnom Penh, Cambodia
  • Average UV index in April: 12

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are January, November and December (UV index 10).