The best times to visit COEX for ideal weather are
April 30th to June 24th
September 3rd to October 21st
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
COEX Travel Guide
Other COEX Travel Info
Weather in COEX
Average temperatures in COEX vary an incredible amount. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 52nd 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 COEX, the hottest months are August, July, and then June. See average monthly temperatures below. The warmest time of year is generally early August where highs are regularly around 88.4°F (31.3°C) with temperatures rarely dropping below 75.7°F (24.3°C) at night.
COEX Temperatures (Fahrenheit)
COEX Temperatures (Celsius)
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.
COEX Perceived Temperature (F)
COEX Perceived Temperature (C)
Average COEX 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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in COEX are January, February, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid November with an average of 1 days of significant precipitation the week of November 12th.
When can you find snow in COEX? Weather stations report a bit of annual snow likely to be deepest around December, especially close to early December. The best time to ski (if at all) in COEX is often around around December 3rd 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 COEX.
Snow on the Ground
The graph below shows the average snow on the ground in COEX (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
COEX has some very humid months, with other moderately humid months on the other side of the year. The least humid month is March (47.2% relative humidity), and the most humid month is July (77.6%).
Wind in COEX is usually extremely calm. The windiest month is March, followed by April and May. March’s average wind speed of around 4.6 knots (5.3 MPH or 8.6 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid March where average top sustained speeds reach 10.3 knots, which is considered a gentle breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in COEX.
The graph below shows wind speed (max and average) in knots.
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||3.3||Barely noticeable||6.8||Light breeze|
|Feb||3.4||Barely noticeable||7.1||Gentle breeze|
|Mar||4.6||Light breeze||9.2||Light breeze|
|Apr||4.5||Light breeze||9.1||Gentle breeze|
|May||4||Light breeze||8.3||Light breeze|
|Jun||3.4||Barely noticeable||7.4||Gentle breeze|
|Jul||3.9||Barely noticeable||7.8||Light breeze|
|Aug||3.5||Barely noticeable||7.3||Gentle breeze|
|Sep||3||Barely noticeable||6.5||Light breeze|
|Oct||2.9||Barely noticeable||6.2||Light breeze|
|Nov||3.6||Barely noticeable||7.2||Light breeze|
|Dec||3.7||Barely noticeable||7.1||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to COEX?
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 COEX, South Korea is April, followed by March and September. 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 COEX in July. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall COEX Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 78.9°F (26.1°C) and 46.7°F (8.2°C) with far warmer temperatures in the later months. Rain is nonexistent with roughly 0 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 about 0 days of precipitation per month. June – August is the slowest season for tourism in COEX, so lodging and other accommodations may cost less than usual.
Fall (September through November)
Fall daily highs range from 80.8°F (27.1°C) and 45.8°F (7.7°C), which will feel comfortable given the humidity and wind. It rains or snows a barely noticeable amount: 0 to 2 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is far too cold this time of year in COEX to be enjoyable for warm weather travelers. The average high during this season is between 46.7°F (8.2°C) and 31.3°F (-0.4°C). On average, it rains or snows a insignificant amount: consistently 0 times per month. These times of year are the second busiest with tourists.