April
Weather in April
Temperature
The coming of April brings a minor shift in Jeju's weather, with average high-temperatures adjusting from March's cool 12.8°C (55°F) to a refreshing 17.5°C (63.5°F). The low-temperature averages to a fresh 10.2°C (50.4°F) during the nights of April.Humidity
The average relative humidity in April is 66.5%.Rainfall
In Jeju, in April, it is raining for 10 days, with typically 90mm (3.54") of accumulated precipitation. In Jeju, during the entire year, the rain falls for 130.2 days and collects up to 1498mm (58.98") of precipitation.Sea temperature
In Jeju, the average seawater temperature in April is 14.7°C (58.5°F).Note: In 14.7°C (58.5°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F).
Daylight
In Jeju, the average length of the day in April is 13h and 1min.On the first day of the month, sunrise is at 06:21 and sunset at 18:54. On the last day of April, sunrise is at 05:46 and sunset at 19:15 KST.
Sunshine
In April, the average sunshine is 6.5h.UV index
In April, the average daily maximum UV index is 8. A UV Index value of 8 to 10 symbolizes a very high health risk from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 8 during April translates into these guidelines:
Always remain cautious. Unprotected skin and eyes are prone to swift harm. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Jeju?
What is the average humidity in April?
How much does it rain in April?
How cold is the water in April?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Jeju have in April?
What is the UV index reading in April?
Average temperature in April
Jeju, South Korea
- Average high temperature in April: 17.5°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in April: 10.2°C
The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (3.2°C).
Average humidity in April
Jeju, South Korea
- Average humidity in April: 66.5%
The month with the highest relative humidity is July (78.3%).
The months with the lowest relative humidity are February and March (64.9%).
Average rainfall in April
Jeju, South Korea
- Average rainfall in April: 89.6mm
The wettest month (with the highest rainfall) is August (262.5mm).
The driest month (with the least rainfall) is December (47.7mm).
Average rainfall days in April
Jeju, South Korea
- Average rainfall days in April: 10 days
The month with the highest number of rainy days is August (13.5 days).
The month with the least rainy days is October (7 days).
Average sea temperature in April
Jeju, South Korea
- Average sea temperature in April: 14.7°C
The best month for swimming (with the highest average sea temperature) is August (26.2°C).
The coldest month (with the lowest average sea temperature) is March (13.3°C).
Average daylight in April /
Average sunshine in April
Jeju, South Korea
- Average daylight in April: 13h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in April: 6h and 3min
The month with the most sunshine is May (Average sunshine: 6h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average UV index in April
Jeju, South Korea
- Average UV index in April: 8
The month with the highest UV index is July (UV index 11).
The months with the lowest UV index are January and December (UV index 3).
