April weather forecast
Incheon, South Korea

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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

Entering April, Incheon sees a temperature rise, with the average high-temperature advancing from March's chilly 9.6°C (49.3°F) to a refreshing 16.1°C (61°F). Incheon experiences an average low-temperature of 7.6°C (45.7°F) in month of April.

Humidity

The average relative humidity in April in Incheon is 64.1%.

Rainfall

In Incheon, during April, the rain falls for 7.3 days and regularly aggregates up to 58mm (2.28") of precipitation. In Incheon, South Korea, during the entire year, the rain falls for 101.9 days and collects up to 1235mm (48.62") of precipitation.

Sea temperature

In Incheon, South Korea, the average seawater temperature in April is 8.4°C (47.1°F).
Note: Taking a dip in 8.4°C (47.1°F) can be perilous. Submersion in temperatures under 10°C (50°F) triggers severe cold shock accompanied by hyperventilation.

Daylight

In Incheon, the average length of the day in April is 13h and 10min.
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.

Sunshine

In Incheon, the average sunshine in April is 7.3h.
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Frequently asked questions

What are April temperatures in Incheon?

The high-temperature during April is 16.1°C (61°F) and the low-temperature is 7.6°C (45.7°F).

What is the average humidity in April in Incheon?

The average relative humidity in April in Incheon is 64.1%.

How much does it rain in Incheon in April?

In Incheon, South Korea, in April, during 7.3 rainfall days, 58mm (2.28") of precipitation is typically accumulated.

What is the water temperature in April in Incheon?

In April, the average sea temperature in Incheon is 8.4°C (47.1°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the average length of the day in April in Incheon?

The average day length in April in Incheon, South Korea, is 13h and 10min.

When are sunrise and sunset in April in Incheon?

On the first day of April in Incheon, 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 many hours of sunshine does Incheon have in April?

In April, the average sunshine duration is 7.3h.

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).

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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%).

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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).

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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).

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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).

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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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Incheon, South Korea

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