2027 Climate Averages

Weather: Jeju Island — January

Conditions are pleasant for sightseeing, though you might encounter occasional showers.

👍 Climate Overview

January is a good time to visit Jeju Island. Expect cold weather with temperatures around 10°C during the day. With only around 10 hours of daylight, plan outdoor activities earlier in the day. Being off-peak, you'll find better deals and fewer crowds. At 16°C, the sea is too cold for most swimmers.

6.7
GoTripzi Score Good

Based on weather comfort, crowds, prices, and activity options

Avg High

10°C

Avg Low

5°C

Rainy days

9days

Daylight

10.2h

Feels like 6°C / 1°C — wind chill makes it feel cooler

Rainfall

59mm

Sunshine

5.7h/day

Humidity

70%

Humid
Sun Strength

3.3

Moderate
Wind

21 km/h (gusts 46)

Sea Temp

16°C ❄️ Cold

Is January a good time to visit Jeju Island?

Conditions are pleasant for sightseeing, though you might encounter occasional showers.

Now

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Feels like --
Wind --
Humidity --
UV Index --
Local time —

Air Quality

Travel Context

  • Crowds
    Quiet
  • Travel Costs Value Rates

Daylight

Sunrise

07:39

Sunset

17:49

10.2h daylight

Visiting Jeju Island in January: Pros & Cons

Pros

  • Fewer crowds and better hotel deals

Cons

  • Sea too cold for comfortable swimming

Things to Do in January

Events & Festivals

🎊
Seollal (Lunar New Year)
January/February Holiday

Recommended for This Weather

🥾 Hiking & nature trails
🍜 Food tours & culinary experiences
🎭 Cultural tours & local experiences

Jeju Island Weather by Month

Month Avg High Avg Low Rain Sunshine Humidity UV Index Crowds Condition
Jan Current 10°C 5°C 9d (59mm) 5.7h
70% Humid
3.3 Moderate
Good
Feb 10°C 6°C 9d (79mm) 6.3h
71% Humid
4.4 Moderate
Good
Mar 14°C 9°C 10d (98mm) 7.6h
72% Humid
6.2 High
Good
Apr 18°C 12°C 8d (93mm) 8.9h
72% Humid
7.8 Very High
Excellent
May 21°C 16°C 9d (129mm) 9.2h
77% Humid
8.2 Very High
Excellent
Jun 25°C 21°C 13d (213mm) 8h
85% Very Humid
7.2 Very High
Wet
Jul 29°C 25°C 18d (254mm) 8.4h
87% Very Muggy
6.8 High
Wet
Aug 30°C 26°C 19d (177mm) 9.9h
83% Very Muggy
7.1 Very High
Wet
Sep 28°C 24°C 17d (275mm) 7.9h
81% Very Humid
5.6 High
Excellent
Oct 22°C 18°C 7d (48mm) 8.2h
72% Humid
5.2 High
Excellent
Nov 17°C 13°C 7d (97mm) 6.9h
70% Humid
3.9 Moderate
Good
Dec 11°C 7°C 7d (31mm) 5.8h
68% Humid
3 Moderate
Good

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Where to Stay

See hotels, apartments & rentals around Jeju Island – live prices from Booking.com, Expedia, Vrbo and more

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Jeju Island

Volcanic island, including waterfalls, Hallasan Mountain hike and Seongsan Sunrise Peak, lava tubes, beaches, and Hallasan crater.

View Full Destination Guide

What to Pack for January

Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility as you move between indoors and outdoors. Pack a compact umbrella or light rain jacket for occasional showers.

Warm Quiet

🎒Personalized Packing List

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Your Packing List

📋Essentials
👕Clothing
👟Footwear
🎒Accessories
🧴Toiletries & Health

Planning a trip to Jeju Island?

💰 Off-peak — great deals available now

Frequently Asked Questions

Is January a good time to visit Jeju Island?
January is typically good for visiting Jeju Island, with average highs of 10°C and around 9 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.
Does it get cold at night in Jeju Island in January?
Nights in Jeju Island during January are cool at around 5°C. Bring a jacket or sweater for evenings, especially if you plan to dine outdoors or take evening walks. The temperature drop from day to night can be noticeable.
What should I pack for Jeju Island in January?
With highs of 10°C and lows of 5°C in January, we recommend: Layerable clothing, Light jacket, Compact umbrella, Comfortable walking shoes. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.
Does it rain a lot in Jeju Island in January?
Jeju Island typically sees around 9 rainy days in January. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.
Can you swim in Jeju Island in January?
Swimming in Jeju Island during January is possible but quite cold, with air temperatures around 10°C. Only brave swimmers venture in without a wetsuit. Consider indoor pools or thermal baths as an alternative if your hotel offers them.
How many hours of daylight are there in Jeju Island in January?
In January, Jeju Island gets approximately 10.2 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.
Is January peak season in Jeju Island?
No, January is not peak season in Jeju Island. Expect better value on accommodation, shorter queues at attractions, and fewer tourists at popular spots. This is an excellent time to experience the city like a local and enjoy a more authentic atmosphere.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Solar calculations: SunCalc (timezone: Asia/Seoul)

Last Updated: February 2026

More Jeju Island Guides

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