April weather forecast
Hong Kong, Hong Kong

The lit city of Hong Kong, on the Hong Kong Island
The lit city of Hong Kong, on the Hong Kong Island

Weather in April

April is a warm spring month in Hong Kong, Hong Kong, with an average temperature fluctuating between 25°C (77°F) and 20.8°C (69.4°F).

Temperature

In Hong Kong, the average high-temperature in April slightly increases from an agreeable 21.4°C (70.5°F) in March to a moderately hot 25°C (77°F). In April, the average low-temperature is 20.8°C (69.4°F).

Humidity

The months with the highest humidity in Hong Kong are April and May, with an average relative humidity of 83%.

Rainfall

In Hong Kong, in April, it is raining for 12 days, with typically 174.7mm (6.88") of accumulated precipitation. Throughout the year, in Hong Kong, there are 137.8 rainfall days, and 2398.4mm (94.43") of precipitation is accumulated.

Sea temperature

In Hong Kong, Hong Kong, the average water temperature is 22.8°C (73°F).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 22.8°C (73°F) water. (FYI: The Olympic swimming competition requires a water temperature between 25°C (77°F) and 28°C (82.4°F).)

Daylight

The average length of the day in April is 12h and 40min.
On the first day of April, sunrise is at 06:16 and sunset at 18:38. On the last day of the month, sunrise is at 05:52 and sunset at 18:49 HKT.

Sunshine

The average sunshine in April is 3.4h.

UV index

The months with the highest UV index are April through August, 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 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. Prolonged stay under the direct sun should be avoided as much as possible, especially if a person burns easily. Sunscreen with a minimum 30 sun protection factor should always be used. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the most humid month in Hong Kong?

The months with the highest humidity are April and May, with an average relative humidity of 83%.

What is the average humidity in April in Hong Kong?

In April, the average relative humidity is 83%.

How many days does it rain in April in Hong Kong?

In Hong Kong, Hong Kong, during April, the rain falls for 12 days and regularly aggregates up to 174.7mm (6.88") of precipitation.

What is the water temperature in April in Hong Kong?

In Hong Kong, Hong Kong, in April, the average water temperature is 22.8°C (73°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 22.8°C (73°F) water may be enjoyable.

How many hours of daylight does Hong Kong have in April?

In April, the average day length in Hong Kong is 12h and 40min.

What time are sunrise and sunset in April in Hong Kong?

On the first day of April, sunrise is at 06:16 and sunset at 18:38. On the last day of the month, sunrise is at 05:52 and sunset at 18:49 HKT.

How many hours of sunshine does Hong Kong have in April?

The average sunshine duration in April in Hong Kong, Hong Kong, is 3.4h.

What are the months with the highest UV index in Hong Kong?

April through August, with an average maximum UV index of 12, are months with the highest UV index in Hong Kong.

How high is the UV index in April in Hong Kong?

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 Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine
Average UV index

Average temperature in April
Hong Kong, Hong Kong

Average temperature in April - Hong Kong, Hong Kong
  • Average high temperature in April: 25°C

The warmest month (with the highest average high temperature) is July (31.4°C).
The month with the lowest average high temperature is January (18.6°C).

  • Average low temperature in April: 20.8°C

The month with the highest average low temperature is July (26.8°C).
The coldest month (with the lowest average low temperature) is January (14.5°C).

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Average humidity in April
Hong Kong, Hong Kong

Average humidity in April - Hong Kong, Hong Kong
  • Average humidity in April: 83%

The months with the highest relative humidity are April and May (83%).
The month with the lowest relative humidity is December (69%).

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Average rainfall in April
Hong Kong, Hong Kong

Average rainfall in April - Hong Kong, Hong Kong
  • Average rainfall in April: 174.7mm

The wettest month (with the highest rainfall) is June (456.1mm).
The driest month (with the least rainfall) is January (24.7mm).

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Average rainfall days in April
Hong Kong, Hong Kong

Average rainfall days in April - Hong Kong, Hong Kong
  • Average rainfall days in April: 12 days

The month with the highest number of rainy days is June (19.1 days).
The month with the least rainy days is December (4.5 days).

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Average sea temperature in April
Hong Kong, Hong Kong

Average sea temperature in April - Hong Kong, Hong Kong
  • Average sea temperature in April: 22.8°C

The best month for swimming (with the highest average sea temperature) is July (29.1°C).
The coldest month (with the lowest average sea temperature) is February (18.9°C).

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Average daylight in April /
Average sunshine in April
Hong Kong, Hong Kong

Average daylight in April / Average sunshine in April - Hong Kong, Hong Kong
  • Average daylight in April: 12h and 40min

The month with the longest days is June (Average daylight: 13h and 29min).
The month with the shortest days is December (Average daylight: 10h and 48min).

  • Average sunshine in April: 3h and 24min

The month with the most sunshine is July (Average sunshine: 6h and 48min).
The month with the least sunshine is March (Average sunshine: 2h and 54min).

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Average UV index in April
Hong Kong, Hong Kong

Average UV index in April - Hong Kong, Hong Kong
  • Average UV index in April: 12

The months with the highest UV index are April, May, June, July and August (UV index 12).
The months with the lowest UV index are January, November and December (UV index 7).

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