The best times to visit Ulleung for ideal weather are

April 23rd to July 22nd


August 20th to November 4th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Ulleung Travel Info

Weather in Ulleung


Average temperatures in Ulleung vary drastically. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 34th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Ulleung, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 82.2°F (27.9°C) with temperatures rarely dropping below 73.1°F (22.8°C) at night.

Ulleung Temperatures (Fahrenheit)


Ulleung Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Ulleung Perceived Temperature (F)


Ulleung Perceived Temperature (C)



Average Ulleung Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 39.3 34.7 30.7
Feb 41.6 36.5 32
Mar 48.5 42.2 36.5
Apr 58.2 51.4 45.2
May 67.4 60.8 54.8
Jun 72.4 66.6 61.9
Jul 78 73.2 69.1
Aug 80.6 75.4 71.5
Sep 73.9 68.2 64
Oct 66 60.3 55.8
Nov 55.1 49.7 45.1
Dec 43.8 38.7 34.3

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 4.1 1.5 -0.7
Feb 5.3 2.5 0
Mar 9.2 5.7 2.5
Apr 14.6 10.8 7.3
May 19.7 16 12.7
Jun 22.4 19.2 16.6
Jul 25.6 22.9 20.6
Aug 27 24.1 21.9
Sep 23.3 20.1 17.8
Oct 18.9 15.7 13.2
Nov 12.8 9.8 7.3
Dec 6.6 3.7 1.3



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Ulleung are June, May, and then August. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early August. For example, on the week of July 30th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early January with an average of 4 days of significant precipitation the week of January 1st.

When can you find snow in Ulleung? Weather stations report large amounts of snow likely to be deepest around February, especially close to late January and early February. The best time to ski (if at all) in Ulleung is often around around January 15th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Ulleung.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Ulleung (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 43% 11 7
Feb 32% 11.1 3.9
Mar 26% 2.5 4
Apr 21% 0 4.3
May 17% 0 4.7
Jun 16% 0 4.9
Jul 22% 0 6.2
Aug 20% 0 5.9
Sep 25% 0 6.6
Oct 22% 0 4.6
Nov 36% 0.8 5.9
Dec 42% 4 5.9

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 43 27.9 17.8
Feb 32 28.2 9.9
Mar 26 6.4 10.2
Apr 21 0 10.9
May 17 0 11.9
Jun 16 0 12.4
Jul 22 0 15.7
Aug 20 0 15
Sep 25 0 16.8
Oct 22 0 11.7
Nov 36 2 15
Dec 42 10.2 15


Humidity and Wind

Ulleung has some very humid months, with other comfortably humid months. The least humid month is April (54.8% relative humidity), and the most humid month is July (78%).

Wind in Ulleung is usually moderate. The windiest month is April, followed by March and May. April’s average wind speed of around 8.5 knots (9.7 MPH or 15.7 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid March where average top sustained speeds reach 14.9 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Ulleung.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 7 Gentle breeze 12.1 Significant breeze
Feb 7.6 Gentle breeze 12.7 Significant breeze
Mar 8.4 Gentle breeze 13.9 Significant breeze
Apr 8.5 Gentle breeze 13.8 Significant breeze
May 8.2 Gentle breeze 13.5 Significant breeze
Jun 6.1 Light breeze 10.2 Gentle breeze
Jul 7.5 Gentle breeze 12 Significant breeze
Aug 7 Gentle breeze 11.2 Significant breeze
Sep 6.7 Light breeze 11 Significant breeze
Oct 7.2 Gentle breeze 11.5 Significant breeze
Nov 7.7 Gentle breeze 12.8 Significant breeze
Dec 7.3 Gentle breeze 12.3 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 58%
Feb 58.2%
Mar 55.4%
Apr 54.8%
May 56.9%
Jun 73.5%
Jul 78%
Aug 77.4%
Sep 71.4%
Oct 59.9%
Nov 55.4%
Dec 55.1%


Is it Safe to Travel to Ulleung?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for South Korea; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Oct 03, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Ulleung, South Korea is January, followed by May and April. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Ulleung in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 73.7 in December means 73.7% of the tourists vs. January.



Overall Ulleung Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 70.3°F (21.3°C) and 44.5°F (6.9°C) with warmer temperatures in the later months. Rain is somewhat common with 5 to 8 days of significant precipitation per month. Spring is the busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the least precipitation with 5 to 7 days of precipitation per month. June – August is fairly slow season for tourism in Ulleung, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 75.5°F (24.2°C) and 50.3°F (10.2°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 7 to 11 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Ulleung to be enjoyable for warm weather travelers. The average high during this season is between 45.8°F (7.7°C) and 38.4°F (3.6°C). On average, it rains or snows a great amount: 9 to 13 times per month. These times of year are the second busiest with tourists.


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