AI-generatedGunsan at a glance
- Best time
- Apr – Jun, Sep – Oct
- Warmest month
- Aug · 30°
- Warmest sea
- Aug · 26.1°
- Sunshine a year
- 2,210 h
- Rain a year
- 1,174 mm
- Climate
- Continental
- Time zone
- UTC+9
- Elevation
- 14 m
Climate in Gunsan
Gunsan has warm to hot summers and cold winters with occasional snow. August is the warmest month with average highs of 30 °C, while January is the coolest at 4 °C. With around 2,210 hours of sunshine a year, Gunsan is sunny; May is the sunniest month with 7.3 hours a day.
Holiday weather through the year
Best time to visit Gunsan
The best time to visit Gunsan is from April to June and from September to October. In September and October, though, the typhoon season is at its peak: check the forecast before you go. For a beach holiday – sea from 21 °C, warm and mostly dry – go in September. For sightseeing, day trips and hiking, conditions are most comfortable from April to June and from September to October. Rain is frequent from July to August; the wettest month is July with 269 mm.
Gunsan through the seasons
How the weather changes over the seasons, with averages for each.
Gunsan in spring
Mar – May
Good
- 11–23 °C by day
- Sea 10 °C
- 7.0 h of sun a day
- 21 rainy days in all
Gunsan in summer
Jun – Aug
Good
- 26–30 °C by day
- Sea 23 °C
- 5.7 h of sun a day
- 37 rainy days in all
Gunsan in autumn
Sep – Nov
Good
- 14–26 °C by day
- Sea 19 °C
- 6.1 h of sun a day
- 21 rainy days in all
Gunsan in winter
Dec – Feb
Poor
- 4–7 °C by day
- Sea 8 °C
- 5.4 h of sun a day
- 16 rainy days in all
Which month for what?
Beach & swimming
Sep
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Apr – Jun, Sep – Oct
15–28 °C and not too much rain
Rainy months
Jul – Aug
Rainy season or more than 12 rainy days
Snow
Jan
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Gunsan for you.
Your best months: May, October
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Excellent
Best time to visit: April – June, September – October
October is the peak of the typhoon season Hurricane season
Where to go in OctoberSea temperature in October
Good forSightseeing & walks
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 14°
- Midday, 13:00: about 21°
- Afternoon, 16:00: about 20°
- Evening, 20:00: about 16°
- Night, 23:00: about 14°
06:3917:59
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:23–07:13 · evening 17:24–18:15
- Blue hour
- Morning 06:13–06:23 · evening 18:15–18:25
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Gunsan compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 23° at the start of the month to 17° at the end. The sea cools from 22° to 17°. The days get 1.1 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 23° | 17° |
| Night-time low | 14° | 8° |
| Sea | 22° | 17° |
| Daylight | 11.9 h | 10.8 h |
What is the weather like in Gunsan in October?
In October, Gunsan is mild: daytime highs average 21 °C, and nights cool down to about 11 °C. The sea averages 19.5 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 6.7 hours a day. Rain falls on about 5 days, adding up to 64 mm. All in all, October is an excellent month for a holiday in Gunsan.
More details for October
- Daylight
- 11 h 20 min06:39 – 17:59
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 47 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+9offset from UTC
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %62 %
- Few rainy daysweight 30 %90 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Wetsuit for longer swims
- Sunscreen
- A jumper for the evenings
Compare two months in Gunsan
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
October and May bring similar holiday weather to Gunsan (score 89 and 87). In May, days are 2 °C warmer than in October. The sea is 5 °C cooler in May. May has 2 more rainy days. The sun shines an hour longer a day in May.
| Month | October | May |
|---|---|---|
| Holiday weather score | 89 | 87 |
| Daytime high | 21° | 23° |
| Night-time low | 11° | 13° |
| Sea | 19.5° | 14.4° |
| Sunshine | 6.7 h | 7.3 hbetter |
| Rainy days | 5better | 7 |
| Rainfall | 64 mmbetter | 90 mm |
| Muggy days | 1 | 0better |
Based on the climate averages 1996–2025.
Gunsan month by month
The typical weather for every month at a glance.
34January4° · Sea 7° · 5.1 h
In January, Gunsan is cold: daytime highs average 4 °C, and nights often drop below freezing (−4 °C). The sea averages 6.9 °C – swimming is only for the hardy. Expect around 5.1 hours of sunshine a day. Rain falls on about 5 days, adding up to 24 mm. Snow falls on about 2 days. All in all, January is not an ideal month for a holiday in Gunsan.
Gunsan in January39February6° · Sea 5° · 6.1 h
In February, Gunsan is cold: daytime highs average 6 °C, and nights often drop below freezing (−2 °C). The sea averages 5.3 °C – swimming is only for the hardy. Expect around 6.1 hours of sunshine a day. Rain is rare: about 5 days bring 30 mm in total. All in all, February is not an ideal month for a holiday in Gunsan.
Gunsan in February52March11° · Sea 6° · 6.6 h
In March, Gunsan is cool: daytime highs average 11 °C, and nights cool down to about 2 °C. The sea averages 6.3 °C – swimming is only for the hardy. The sun shines for around 6.6 hours a day. Rain falls on about 7 days, adding up to 50 mm. All in all, March is a so-so month for a holiday in Gunsan.
Gunsan in March83April17° · Sea 10° · 7.2 h
In April, Gunsan is mild: daytime highs average 17 °C, and nights cool down to about 7 °C. The sea averages 9.7 °C – swimming is only for the hardy. The sun shines for around 7.2 hours a day. Rain falls on about 7 days, adding up to 80 mm. All in all, April is an excellent month for a holiday in Gunsan.
Gunsan in April87May23° · Sea 14° · 7.3 h
In May, Gunsan is warm: daytime highs average 23 °C, and nights cool down to about 13 °C. The sea averages 14.4 °C – swimming is only for the hardy. The sun shines for around 7.3 hours a day. Rain falls on about 7 days, adding up to 90 mm. All in all, May is an excellent month for a holiday in Gunsan.
Gunsan in May81June26° · Sea 19° · 6.2 h
In June, Gunsan is warm: daytime highs average 26 °C, and nights cool down to about 18 °C. The sea averages 19.4 °C – bracing, so a wetsuit helps for longer swims. Expect around 6.2 hours of sunshine a day. Rain falls on about 8 days, adding up to 135 mm. All in all, June is an excellent month for a holiday in Gunsan.
Gunsan in June50July29° · Sea 23° · 4.9 h
In July, Gunsan is hot: daytime highs average 29 °C, and even at night it stays warm at around 23 °C. The sea averages 23.4 °C – pleasant for swimming. Expect around 4.9 hours of sunshine a day. It rains often – on about 15 days, adding up to 269 mm. On about 11 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Gunsan.
Gunsan in July48August30° · Sea 26° · 6.1 h
In August, Gunsan is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 26.1 °C – lovely and warm for swimming. Expect around 6.1 hours of sunshine a day. It rains often – on about 14 days, adding up to 209 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a so-so month for a holiday in Gunsan.
Gunsan in August81September26° · Sea 24° · 6.3 h
In September, Gunsan is warm: daytime highs average 26 °C, and nights cool down to about 18 °C. The sea averages 23.8 °C – pleasant for swimming. Expect around 6.3 hours of sunshine a day. Rain falls on about 9 days, adding up to 151 mm. All in all, September is an excellent month for a holiday in Gunsan.
Gunsan in September89October21° · Sea 20° · 6.7 h
In October, Gunsan is mild: daytime highs average 21 °C, and nights cool down to about 11 °C. The sea averages 19.5 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 6.7 hours a day. Rain falls on about 5 days, adding up to 64 mm. All in all, October is an excellent month for a holiday in Gunsan.
Gunsan in October62November14° · Sea 15° · 5.4 h
In November, Gunsan is cool: daytime highs average 14 °C, and nights cool down to about 5 °C. The sea averages 14.9 °C – swimming is only for the hardy. Expect around 5.4 hours of sunshine a day. Rain falls on about 6 days, adding up to 44 mm. All in all, November is a good month for a holiday in Gunsan.
Gunsan in November33December7° · Sea 10° · 4.9 h
In December, Gunsan is cold: daytime highs average 7 °C, and nights often drop below freezing (−1 °C). The sea averages 10.4 °C – swimming is only for the hardy. Expect around 4.9 hours of sunshine a day. Rain falls on about 6 days, adding up to 28 mm. All in all, December is not an ideal month for a holiday in Gunsan.
Gunsan in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Gunsan
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- muggy month (15+ muggy days)
CoolOctober: nights around 11°. A duvet at night and a jumper for the evening. Muggy on about 1 day (dew point 18 °C or more).
The coolest nights are in January (−4°), the warmest in August (23°). Tropical nights of 20 °C and more are the rule from July to August; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in June and in September. Nights fall below 8 °C on average from November to April, so the room should be heated. It is muggy (dew point 18 °C or more) on about 88 days a year, mostly from July to August.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 34 | 4° | −4° | 6.9° | 5.1 h | 5 | 24 |
| FebruaryFeb | 39 | 6° | −2° | 5.3° | 6.1 h | 5 | 30 |
| MarchMar | 52 | 11° | 2° | 6.3° | 6.6 h | 7 | 50 |
| AprilApr | 83 | 17° | 7° | 9.7° | 7.2 h | 7 | 80 |
| MayMay | 87 | 23° | 13° | 14.4° | 7.3 h | 7 | 90 |
| JuneJun | 81 | 26° | 18° | 19.4° | 6.2 h | 8 | 135 |
| JulyJul | 50 | 29° | 23° | 23.4° | 4.9 h | 15 | 269 |
| AugustAug | 48 | 30° | 23° | 26.1° | 6.1 h | 14 | 209 |
| SeptemberSep | 81 | 26° | 18° | 23.8° | 6.3 h | 9 | 151 |
| OctoberOct | 89 | 21° | 11° | 19.5° | 6.7 h | 5 | 64 |
| NovemberNov | 62 | 14° | 5° | 14.9° | 5.4 h | 6 | 44 |
| DecemberDec | 33 | 7° | −1° | 10.4° | 4.9 h | 6 | 28 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
35.98° N, 126.71° E · 14 m · Asia/Seoul
Sea temperature in Gunsan
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 18.4 – 20.5 °C
Swimming season: Jul – Sep
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Gunsan ranges from 5.3 °C in February to 26.1 °C in August. It is warm enough for a comfortable swim (20 °C and more) from July to September.
From November to January the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 24.6 and 27.6 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 6.9° | 6.0° | 8.0° | cold |
| FebruaryFeb | 5.3° | 4.2° | 6.4° | cold |
| MarchMar | 6.3° | 5.3° | 7.4° | cold |
| AprilApr | 9.7° | 8.5° | 11.0° | cold |
| MayMay | 14.4° | 13.2° | 15.6° | cold |
| JuneJun | 19.4° | 18.1° | 20.9° | fresh |
| JulyJul | 23.4° | 22.1° | 25.3° | pleasant |
| AugustAug | 26.1° | 24.6° | 27.6° | warm |
| SeptemberSep | 23.8° | 22.3° | 24.9° | pleasant |
| OctoberOct | 19.5° | 18.4° | 20.5° | fresh |
| NovemberNov | 14.9° | 13.6° | 16.0° | cold |
| DecemberDec | 10.4° | 9.3° | 11.3° | cold |
Sunshine hours in Gunsan
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 6.7 of 11.3 hours of daylight in Gunsan, 59 % of the daylight hours.
Sunshine hours: measured at the weather station 5 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Gunsan: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Gunsan has about 5 rainy days with 64 mm of rain in total.
UV index in Gunsan
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 5 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 10).
Minutes until sunburn in October
- Very fair skin
- about 25 min
- Fair skin
- about 35 min
- Light brown skin
- about 45 min
- Olive skin
- about 60 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Gunsan
How breezy and how cloudy Gunsan is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Gunsan typically peaks at 16 km/h during the day: Beaufort 3, gentle breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Mar.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 47 % of the sky over Gunsan: variable cloud, with about 6.7 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Gunsan
How often the day gets hot in Gunsan (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Gunsan has about 0 hot days, with an average daytime high of 21 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow in Gunsan
Snow is possible in Gunsan, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Gunsan.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Planning a trip to Gunsan
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Gunsan in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Gunsan has its best school-holiday weather during October half-term (score 89) and its weakest during the Christmas holidays (score 34).
- 74
Easter holidays
Mar – Apr
Good
- 15 °C by day
- Sea 9 °C
- 7.0 h of sun a day
- 7 rainy days a month
- 86
May half-term
May – Jun
Excellent
- 23 °C by day
- Sea 15 °C
- 7.1 h of sun a day
- 8 rainy days a month
Good for: Sightseeing & walks
- 49
Summer holidays
Jul – Aug
Fair
- 30 °C by day
- Sea 25 °C
- 5.7 h of sun a day
- 14 rainy days a month
Keep in mind: Frequent rain, Storm season
- 89
October half-term
Oct
ExcellentBest holidays
- 21 °C by day
- Sea 20 °C
- 6.7 h of sun a day
- 5 rainy days a month
Good for: Sightseeing & walks
Keep in mind: Storm season
- 34
Christmas holidays
Dec – Jan
Poor
- 6 °C by day
- Sea 9 °C
- 5.0 h of sun a day
- 6 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 11 h 20 min
- Distance
- 9,020 km
- Time zone
- UTC+9
- Jet lag
- About 8 days (8 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Gunsan lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM, Fiji Meteorological Service); not a forecast.
Compare & alternatives
Gunsan compared
Put Gunsan side by side with another destination.
Gunsan vs Jeonju
In October the holiday weather in Gunsan and Jeonju is about equally good (score 89 vs 89). During the day Jeonju is 1 °C warmer than Gunsan. Jeonju gets one hour less sunshine a day.
| in October | Gunsan | Jeonju |
|---|---|---|
| Holiday weather score | 89 | 89 |
| Daytime high | 21° | 22° |
| Sea | 20° | no sea nearby |
| Sunshine | 7 h | 6 h |
| Rainy days | 5 | 5 |
| Best time | Apr – Jun, Sep – Oct | Apr – May, Sep – Oct |
Through the year
South Korea in October: the best places
In October, Gunsan ranks 8 of 28 destinations in this country.
- Yeosu22°21°92
- 2Suncheon22°21°91
- 3Gwangju22°90
- 4Mokpo22°19°90
- 5Daegu22°90
- 6Changwon22°22°90
- 7Busan23°22°90
- 8GunsanThis page21°20°89
Near Gunsan
Other destinations close by.
Places with a climate like Gunsan
Destinations whose weather through the year is closest to Gunsan's – good alternatives.
Frequently asked questions about Gunsan
When is the best time to visit Gunsan?
The best time to visit Gunsan is from April to June and from September to October. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Gunsan?
The sea temperature in Gunsan ranges from 5.3 °C in February to 26.1 °C in August. It is warm enough for a comfortable swim (20 °C and more) from July to September.
Can you swim in Gunsan in October?
Only if you don't mind cold water: in October the sea averages just 19.5 °C. Comfortable swimming is possible from July to September.
What is the warmest month in Gunsan?
August is the warmest month, with average highs of 30 °C and nights around 23 °C. January is the coolest month at 4 °C.
When does it rain most in Gunsan?
Rain is frequent from July to August; the wettest month is July with 269 mm. The driest month is January with 24 mm.
How many hours of sunshine does Gunsan get?
Gunsan gets around 2,210 hours of sunshine a year. The sunniest month is May with 7.3 hours a day; in July there are 4.9 hours a day.
What time zone is Gunsan in?
Gunsan is on UTC+9 all year.
How long is the flight from London to Gunsan?
A nonstop flight from London to Gunsan takes about 11 h 20 min, for a straight-line distance of about 9,020 km. Most routes need a change of planes, which adds time.
When is typhoon season in Gunsan?
Gunsan lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Gunsan?
Gunsan has its best school-holiday weather during October half-term (score 89) and its weakest during the Christmas holidays (score 34). Holiday ratings (0–100): Easter holidays 74, May half-term 86, summer holidays 49, October half-term 89, Christmas holidays 34.