April weather forecast
Incheon, South Korea

April

Weather in April

In April, we witness substantial changes in weather conditions in Incheon. Even with the arrival of longer days and increased sunlight, the consistent trend of rainfall witnessed from March intensifies. Though the sky might seem clear and blue, it's not unusual to experience sudden showers due to increase in humidity. The temperature keeps increasing and the coat jackets worn in previous months get stowed back into closets. Despite the slight temperature rise, the sea remains relatively chill for swimming activities.

Temperature

April's arrival brings a change in high-temperatures, moving from a chilly 9.6°C (49.3°F) in March to an enjoyable 16.1°C (61°F). April brings an average low-temperature of 7.6°C (45.7°F) to Incheon.

Humidity

In April, the average relative humidity is 64.1%.

Rainfall

In April, the rain falls for 7.3 days. Throughout April, 58mm (2.28") of precipitation is accumulated. Throughout the year, there are 101.9 rainfall days, and 1235mm (48.62") of precipitation is accumulated.

Sea temperature

In Incheon, South Korea, in April, the average water temperature is 8.4°C (47.1°F).
Note: In 8.4°C (47.1°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F).

Daylight

In April, the average length of the day is 13h and 10min.
On the first day of the month, sunrise is at 06:18 and sunset at 18:55. On the last day of April, sunrise is at 05:38 and sunset at 19:21 KST.

Sunshine

In Incheon, South Korea, the average sunshine in April is 7.3h.

Frequently asked questions

What is the temperature in April?
During April, Incheon experiences an average high-temperature of 16.1°C (61°F) and a low-temperature of 7.6°C (45.7°F).
What is the average humidity in April?
In Incheon, the average relative humidity in April is 64.1%.
How much does it rain in April?
In Incheon, during April, the rain falls for 7.3 days and regularly aggregates up to 58mm (2.28") of precipitation.
What is the sea water temperature in April?
In Incheon, the average seawater temperature in April is 8.4°C (47.1°F). Swimming in 8.4°C (47.1°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
How many hours of daylight does Incheon have in April?
The average day length in April is 13h and 10min.
When are sunrise and sunset in April?
On the first day of April, sunrise is at 06:18 and sunset at 18:55. On the last day of the month, sunrise is at 05:38 and sunset at 19:21 KST.
How long on average sun shines in April in Incheon?
The average sunshine duration in April is 7.3h.
Average high temperature
Average low temperature
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average temperature in April - Incheon, South Korea
Average temperature in April
Incheon, South Korea
  • Average high temperature in April: 16.1°C

The warmest month (with the highest average high temperature) is August (29°C).
The month with the lowest average high temperature is January (1.7°C).

  • Average low temperature in April: 7.6°C

The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (-5.4°C).

Average humidity in April - Incheon, South Korea
Average humidity in April
Incheon, South Korea
  • Average humidity in April: 64.1%

The month with the highest relative humidity is July (82.2%).
The month with the lowest relative humidity is January (61.5%).

Average rainfall in April - Incheon, South Korea
Average rainfall in April
Incheon, South Korea
  • Average rainfall in April: 57.7mm

The wettest month (with the highest rainfall) is July (319.6mm).
The driest month (with the least rainfall) is December (19.3mm).

Average rainfall days in April - Incheon, South Korea
Average rainfall days in April
Incheon, South Korea
  • Average rainfall days in April: 7.3 days

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (5.3 days).

Average sea temperature in April - Incheon, South Korea
Average sea temperature in April
Incheon, South Korea
  • Average sea temperature in April: 8.4°C

The best month for swimming (with the highest average sea temperature) is August (23.4°C).
The coldest month (with the lowest average sea temperature) is February (3.3°C).

Average daylight in April / Average sunshine in April - Incheon, South Korea
Average daylight in April /
Average sunshine in April
Incheon, South Korea
  • Average daylight in April: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in April: 7h and 2min

The month with the most sunshine is May (Average sunshine: 7h and 30min).
The month with the least sunshine is July (Average sunshine: 5h and 6min).

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