The best times to visit Gunsan for ideal weather are

April 30th to June 24th

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



Other Gunsan Travel Info

Weather in Gunsan


Average temperatures in Gunsan vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a fair chance of precipitation about half 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 Gunsan, 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 87.8°F (31°C) with temperatures rarely dropping below 75.3°F (24.1°C) at night.

Gunsan Temperatures (Fahrenheit)


Gunsan 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.

Gunsan Perceived Temperature (F)


Gunsan Perceived Temperature (C)



Average Gunsan 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 37.7 30.8 22.3
Feb 42.3 35 26.4
Mar 49.9 42.1 33.1
Apr 60.3 51.8 42.7
May 70.7 62.6 54.2
Jun 78.2 71.2 64.6
Jul 83.2 77.6 72.5
Aug 85.4 79.1 73.1
Sep 78.7 71.1 63.6
Oct 69 60.1 50.6
Nov 55.9 48 39.4
Dec 42.4 35.2 26.9

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 3.2 -0.7 -5.4
Feb 5.7 1.7 -3.1
Mar 9.9 5.6 0.6
Apr 15.7 11 5.9
May 21.5 17 12.3
Jun 25.7 21.8 18.1
Jul 28.4 25.3 22.5
Aug 29.7 26.2 22.8
Sep 25.9 21.7 17.6
Oct 20.6 15.6 10.3
Nov 13.3 8.9 4.1
Dec 5.8 1.8 -2.8



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Gunsan are October, January, and then February. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid October. For example, on the week of October 8th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in mid August with an average of 3 days of significant precipitation the week of August 13th.

When can you find snow in Gunsan? Weather stations report large amounts of snow likely to be deepest around November, especially close to early December. The best time to ski (if at all) in Gunsan is often around around November 19th 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 Gunsan.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 11% 4.7 1.4
Feb 12% 1.7 2.1
Mar 15% 2.6 2.5
Apr 17% 0 2.3
May 16% 0 6.7
Jun 20% 0 6.1
Jul 31% 0 10.2
Aug 31% 0 11
Sep 19% 0 6.2
Oct 10% 0 1.5
Nov 20% 7.1 2.4
Dec 18% 6 2.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 11 11.9 3.6
Feb 12 4.3 5.3
Mar 15 6.6 6.4
Apr 17 0 5.8
May 16 0 17
Jun 20 0 15.5
Jul 31 0 25.9
Aug 31 0 27.9
Sep 19 0 15.7
Oct 10 0 3.8
Nov 20 18 6.1
Dec 18 15.2 5.3


Humidity and Wind

Gunsan has some extremely humid months, and above average humidity throughout the year. The least humid month is February (65.8% relative humidity), and the most humid month is July (84.9%).

Wind in Gunsan is usually calm. The windiest month is March, followed by April and December. March’s average wind speed of around 8 knots (9.2 MPH or 14.9 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 late December where average top sustained speeds reach 15.6 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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 6.5 Light breeze 13.2 Significant breeze
Feb 6.8 Light breeze 13.3 Significant breeze
Mar 8 Gentle breeze 14.7 Significant breeze
Apr 7.3 Gentle breeze 14.1 Significant breeze
May 6.6 Light breeze 13 Significant breeze
Jun 6 Light breeze 12.3 Significant breeze
Jul 6.9 Light breeze 13.2 Significant breeze
Aug 6.6 Light breeze 12.8 Significant breeze
Sep 5.6 Light breeze 11.3 Significant breeze
Oct 6.3 Light breeze 12.4 Significant breeze
Nov 6.9 Light breeze 13.2 Significant breeze
Dec 7.2 Gentle breeze 14.6 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 66.6%
Feb 65.8%
Mar 66.6%
Apr 68.9%
May 71.7%
Jun 79.1%
Jul 84.9%
Aug 79.9%
Sep 73.5%
Oct 66%
Nov 67.5%
Dec 68.6%


Is it Safe to Travel to Gunsan?

Our best data indicates this area is generally safe. As of Dec 04, 2023 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 30, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Gunsan, 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 Gunsan 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 Gunsan Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 74.8°F (23.8°C) and 45.9°F (7.7°C) with far warmer temperatures in the later months. Rain is somewhat common with roughly 5 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 most precipitation with 6 to 10 days of precipitation per month. June – August is fairly slow season for tourism in Gunsan, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 80°F (26.7°C) and 50.7°F (10.4°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 3 to 6 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 far too cold this time of year in Gunsan to be enjoyable for warm weather travelers. The average high during this season is between 47.1°F (8.4°C) and 36.3°F (2.4°C). On average, it rains or snows a smalll amount: 3 to 5 times per month. These times of year are the second busiest with tourists.


Best Times to TravelSouth Korea › Gunsan, South Korea