South KoreaAverage weather for Jeju in April
It's cool to moderate in April in Jeju with an average temperature of 18°C. Temperatures this month range from a low of 16°C to a high of 21°C. At night, you can expect temperatures between 9°C and 14°C.
Start of April
The month of April starts in Jeju with cool temps, averaging around 17°C during the day and nights around 11°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid April
By mid-April, daytime temps rise to around 19°C, with nights around 12°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of April
By the end of April, the average daytime temperature in Jeju is around 20°C, while nighttime temps are about 13°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Water temperature
The water temperature at Jeju is 16°C this month. This is probably too cold to swim without protective gear.
In April, there is an average of 133 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the South.
Jeju in April |
New York | ||
|---|---|---|---|
 Average temperature |
18°C | 17°C | |
 Max. temperature |
21°C | 22°C | |
| Min. temperature |
16°C | -5°C | |
 Total precipitation |
133 mm | 81 mm | |
| Rainy days |
9 days | 11 days | |
March
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is April a good time to visit Jeju?
Looking for sun? April isn’t a good month to be in Jeju. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 27°C in 2023, Jeju reached the highest temperature in April over the past 10 years. The lowest daytime temperature in this month was 8°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 4°C to a highest value of 19°C.
Check out the climate of Jeju for all months and discover the best travel time
Curious about the weather in other parts of South Korea? Check out the climate and weather for spots like Seoul, Busan, or explore other destinations in South Korea.
Daily Temperature in April in Jeju
This chart shows the average daily high and low temperatures in April for Jeju, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in April in Jeju
The chart below shows the average daily precipitation in April for Jeju, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for April, you can expect about 9 days of precipitation in Jeju.
Daily UV index in April in Jeju
This chart shows the average daily UV index in April in Jeju, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in April in Jeju over the years
This chart shows the average temperature in April in Jeju, measured in degrees Celsius, over the past few years.
Total precipitation in April in Jeju over the years
This chart shows the average precipitation in April in Jeju, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in April for Jeju
Click on any day in April to get detailed info about the usual weather on that day in Jeju. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in April in Jeju
Have you been to Jeju in April?
Share your weather experience in April in Jeju.
Average weather in Jeju by month
Click on a month below to see detailed weather info for Jeju. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
