If you plan to visit Jeju in January, the weather is typically alright, with an average high temperature of +8°C during the day and approximately 2 sunny days. Expect some rainy, though, as there are typically 13 rainy days in the month and around 66 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Good to know:
January is usually the coldest month of the year in Jeju;
Average weather
☀️
+8°C
Avg. max. temperature
-6°C
Min.
+22°C
Max.
66 mm
Total precipitation
66%
Avg. humidity
4 m/s
Avg. wind
2 ☀️
Sunny Days
12 ⛅️
Cloudy
13 🌦
Rainy
Our opinion: Jeju has OK weather in January.
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Average temperature in Jeju in January
Here are the expected maximum, average and minimum temperatures in Jeju for January based on the historical data.
Last Year
Historical Data
Going from a maximum of +20°C during the day to a minimum of -4°C during the night, the temperature in January averages around +9°C.
The average maximum temperature goes up 13% by the end of the month, compared with the beginning of the month, from +10°C to +13°C.
Is Jeju warm or cold in January?
Jeju is typically cool in January.
Maximum temperatures go down compared to the previous month from +10°C to +8°C. The minimum temperature also goes down from +6°C to +4°C.
Pack a sweater and a jacket as there will be cooler temperatures.
January is the coldest month in Jeju, here is the comparison with other months:
Climate in Jeju in January
Jeju weather looks like this, on average, in January and the surrounding months.
December
January
February
Avg. temperature
+10°C
+8°C
+9°C
Min. temperature
-2°C
-6°C
-4°C
Max. temperature
+21°C
+22°C
+23°C
Rainfall
59 mm
66 mm
68 mm
Wind
4 m/s
4 m/s
4 m/s
Humidity
65%
66%
66%
Air pressure
1023 HPa
1023 HPa
1022 HPa
Sunny days
3
2
3
Cloudy days
11
12
10
Rainy days
15
13
13
Snowy days
1
4
2
January weather is still as ok as in December.It’s getting colder in January. From +10°C in the day, the average maximum temperature lowers to +8°C.Prepare for more rain. Average rainfall goes from 59 mm to 66 mm.Humidity rises from 65% to 66%.The average wind speed doesn’t change much during January, staying around 4 m/s.The days becoming less sunny, going from 3 sunny days in December to 2 in January.
February brings much the same weather, it remains ok.
Wind speed in Jeju in January based on historical data.
Last Year
Historical Data
The average wind speed is 4 m/s getting up to 9 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Jeju is gradually decreasing during January, going from 4 m/s to 3 m/s over the course of the month.
Rain
Amount of rainfall in mm during January in Jeju based on historical data.
Last Year
Historical Data
Typically, there is a 35% chance of rain on an average day in January, with total rainfall of approximately 53 mm. The maximum amount of rainfall per day is around 19 mm, which is considered light rain.January is a pretty wet month with over 11 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how January is compared with other months in the amount of precipitation, total mm:
Jeju wettest month is June, where a typical day has a 50% chance of precipitation and 193 mm of rainfall per day. December, on the other hand, is the driest month with a mere 48% chance of precipitation and 59 mm of rainfall per day.
Snow
Amount of snow in mm during January in Jeju based on historical data.
Last Year
Historical Data
Typically, there is a 6% chance of snow on an average day in January, with a total monthly snowfall of approximately 12 mm.
January is one of the snowiest months in Jeju.
Here’s how January is compared with other months in the amount of snow, total mm:
How was the weather last January in Jeju?
This is the weather in Jeju in January 2024:
1 January
🌫️
+10°C
2 January
☁️
+6°C
3 January
☁️
+7°C
4 January
☀️
+8°C
5 January
☀️
+12°C
6 January
☁️
+11°C
7 January
☀️
+10°C
8 January
☀️
+13°C
9 January
☀️
+15°C
10 January
☀️
+14°C
11 January
☀️
+14°C
12 January
🌧️
+20°C
13 January
🌧️
+19°C
14 January
🌧️
+11°C
15 January
☁️
+6°C
16 January
☁️
+4°C
17 January
☁️
+5°C
18 January
☁️
+7°C
19 January
☁️
+10°C
20 January
☁️
+7°C
21 January
☁️
+7°C
22 January
🌧️
+9°C
23 January
☁️
+10°C
24 January
🌨️
-1°C
25 January
☁️
+4°C
26 January
🌧️
+8°C
27 January
🌨️
+3°C
28 January
☁️
+6°C
29 January
☁️
+8°C
30 January
☀️
+7°C
31 January
☀️
+13°C
In January 2024 Jeju had 9 sunny days, 14 cloudy days, and 5 rainy days. The average maximum temperature was +9°C, with an absolute maximum of +20°C and a minimum of -1°C. The average humidity was 64%, with a maximum of 99% and a minimum of 36%. The average wind speed was 4 m/s, with a maximum of 13 m/s and a minimum of 0 m/s.
Are you planning a trip in January?
Climate Change over Years
This is how Jeju climate have been changing during last 43 years period.
The climate in Jeju in January has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+17°C) and the highest in 2024 (+19°C). The driest year was 2005 with only 752 mm of rainfall, and the wettest year was 1985 with 1808 mm.
FAQ
Frequently asked questions about the weather in Jeju in January:
Is January a good time to visit Jeju?
It’s always a good time to visit Jeju, but the weather is changeable in January, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Jeju in January?
Not really, January is not the best time to sunbathe, unless you visit a local solarium.
Is Jeju rainy in January?
Jeju is often rainy in January. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Jeju in January?
Usually, it’s not very sunny in Jeju in January, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
Other cities in South Korea
Check out the weather for other cities in South Korea.
For this page, we’ve looked at the typical weather in Jeju, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
