September 2026: Top 5 West Sea Island Festivals in Korea

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September's Top Domestic Travel Festivals

Top Picks for West Coast Island Hopping

Our Top 5 Picks!

Photos / Videos / Content ⓒ Seomtopia

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Hello, fellow explorers! I'm **Seomtopia**, your **guide to Korea's West Coast and its stunning islands**, based in Yeongjongdo, and a **travel creator**! :)

If you're already dreaming up your September domestic travel plans,

this year, you might find there's more to explore than just the usual famous autumn festivals!

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Along the **western coastal region**, you'll find festivals connecting tidal flats, salt farms,

grape growing regions, and scenic coastal roads.

And in **Gunsan**, they even have island programs where you journey by boat!

Plus, this year brings an extra special event to the calendar!

For two months, as part of the September festivals,

**Yeosu** will host the spectacular **World Island Expo**, where you can even find exciting on-site programs that link real islands like Geumodo and Gaedo.

That's why this time, from all the September festivals,

I've carefully picked out just 5 incredible spots that truly connect with islands and the sea.

But here's a heads-up: for **one particular spot**,

**waiting until the event day will be too late!**

The **Gunsan Eocheongdo Romantic Trip, taking place on September 5th**, is **accepting participants until August 23rd**, so if you're interested, you'll need to check the application schedule right away.

And on the third weekend of the month,

the Siheung Gaetgol Festival and the Daebu Grape Festival

are happening back-to-back, just a day apart!

Let's summarize to get straight to the good stuff:

Island hopping by ferry → Eocheongdo

Nationwide island experiences → Yeosu

Flowers and the West Coast Sea → Taean

Tidal flat & salt farm experience with kids → Siheung

Autumn day trip near Seoul → Daebudo

Choosing your adventure this way makes it easy!

In this post, out of all the incredible West Coast island trips we're recommending,

we won't just list dates.

Instead, we'll compare each one, giving you the full picture of

**when, with whom, and in what style** is best to travel.​

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Your Quick Guide: Dates & Travel Styles

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Dates	Region & Event	Type of Experience	Key Considerations
9/5	Gunsan Eocheongdo Romantic Trip	Ferry Route	Application & Weather
9/5~11/4	Yeosu World Island Expo	Island-Expanded Festival	Island-Specific Programs
9/17~11/1	Taean Autumn Flower Expo	Flowers + Coastal Views	Sunset & Travel Logistics
9/18~20	Siheung Gaetgol Festival	Nature Experience	Programs & Reservations
9/19~20	Ansan Daebu Grape Festival	Seoul Day Trip Friendly	Parking & Crowds

(Scroll the table horizontally to view more)

When planning your September domestic travel, the first thing to consider isn't

popularity, but rather the **dates and style of your trip**.

Especially this year, schedules are packed around September 5th and

the third week of the month.

On September 5th, programs in Gunsan and

the Yeosu event kick off.

From September 17th, Taean's flower festival begins,

followed by Siheung's programs on the 18th,

and Daebudo's event starting on the 19th.

However, the vibe and nature of these five destinations are quite distinct.

Eocheongdo offers a genuine island journey, reached by taking a ferry,

while Siheung and Daebudo, on the other hand, are conveniently located for those in Seoul and the greater metropolitan area,

making them perfect for easy day trips.

When visiting Taean, it's more rewarding to combine its beautiful coastline and sunsets rather than just seeing the flowers,

As for Yeosu, it's best experienced by exploring its nationwide island content this year,

rather than focusing on a single event.

In September, instead of picking an event name first, it's easier to choose your destination if you decide whether to go to an island, make it a day trip, or include activities for kids. ​

Starting Off: Eocheongdo and Yeosu

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① Gunsan Eocheongdo Romantic Getaway

Category	Details
Schedule	September 5, 2026
Location	Gunsan Eocheongdo
Application Period	August 15 – August 23
Type	Island trip via passenger ferry
Important Checks	Application, ferry schedule, weather

Among these five spots,

the one I want to introduce first is

Gunsan Eocheongdo.

Unlike places you can drive directly to,

you'll need to take a passenger ferry here,

so the preparation process is a bit different.

Eocheongdo is an island you can only reach

by venturing into the western sea from Gunsan Port,

so the preparation process is different from destinations

like Daebudo or Siheung, where you can drive directly.

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While the event date is September 5th,

what's more crucial than the event date

is the participant recruitment period.

Since applications are open from August 15th to 23rd,

if you're reading this in August,

this is the first place you should check among the five.

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Eocheongdo is a destination that requires you

to start your preparations earlier than the other four places.

While you might be able to spontaneously visit mainland events,

getting to this island can be tricky if your application and ferry schedule don't align.

Island trips, in particular,

can have their schedules directly affected by weather and ferry operating conditions.

Therefore, even if you've completed your application,

it's a good idea to double-check the ferry's operating status before you depart.

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② 2026 Yeosu World Island Expo

Category	Details
Period	September 5 – November 4, 2026 (Closed: October 6, Tuesday)
Region	Yeosu, Jeollanam-do
Key Highlight	Expo + Real Island Trip
Connected Islands	Geumodo, Sado, Nangdo, Gaedo, etc.
Recommendation	Island trip of 1 night or more

If you're looking for a major island-related event this year,

it's hard to overlook the Yeosu World Island Expo.

Running from September 5th to November 4th,

this isn't an event that wraps up in a single weekend.

You can explore Yeosu's islands like Geumodo, Sado, Nangdo, and Gaedo along with the expo,

and the key highlight is that you can start with the expo and then expand your adventure to actual islands like Geumodo, Sado, Nangdo, and Gaedo.

For Yeosu,

instead of trying to see all the programs in one day,

Expo + one island

it's easier to plan your itinerary

if you set your goal to something like that.

Especially considering travel time,

unlike a day trip to the West Coast,

it's more realistic to plan for a trip

of one night or more.

If you want to experience islands across the nation, beyond just the West Sea, you have a reason to specifically check out Yeosu in September 2026.

➡️ 「Things to Know Before Visiting the World Island Expo:

Geomodo & Gaedo Guide」

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Autumn Flowers and the Sea, Taean

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Category	Details
Period	Sept 17 - Nov 1
Location	Taean Nature World
Entry	09:00~17:00
Closing	18:00
Connected to	Taean West Coast

If you want to see both flowers and the sea

after mid-month, Taean is also an option.

The 2026 Taean Autumn Flower Expo will be held

at Nature World from September 17th to November 1st.

What's important here is not to view

the Autumn Flower Expo as just a single event.

If you've made it all the way to Taean,

rather than just seeing the flowers and heading straight back,

aim for: Flowers → West Sea → Sunset

Among these five destinations,

Taean is where the day's flow becomes most vivid

when you connect the flowers with the surrounding sea.

Since the sun sets earlier in autumn

than in summer,

if you plan to see the sea sunset,

it's a good idea to calculate in advance

when you'll leave the flower expo.

If it were me, instead of going in late afternoon,

I'd explore the flowers first during the day,

then move to the coast to finish the day

with a coastal sunset.

Think of Taean as a place where your day trip's completeness level rises when you connect it with the sea and sunset, rather than just the flower festival.

Third Weekend: Siheung and Daebudo

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For the third weekend,

it's a good idea to mark it separately

because programs in the Gyeonggi West region overlap.

Two events with different characteristics

overlap in the Gyeonggi West Sea area.

① Siheung Gaetgol Festival

Category	Details
Period	Sept 18-20
Location	Siheung Gaetgol Eco Park
Highlights	Tidal Creek, Salt Pans, Wetlands
Recommended for	Families with Children, Nature Experience
Admission	Free / Some programs may have separate fees

This event takes place from September 18th to 20th

at Siheung Gaetgol Eco Park.

Although it's not an island,

the reason it's included in this hub is clear:

tidal creeks, salt pans, and wetlands.

It's because all the best ways to directly

experience the natural environment of the West Sea

are gathered in one convenient spot.

Especially if you're traveling with kids,

the availability of programs where they can observe nature and

participate directly, rather than just performance-based events,

can be a major factor in your decision.

Once all the detailed programs are unveiled,

it's a great idea to make your final selections based on your child's age

and the desired duration of their experience.

② Ansan Daebudo Grape Festival

Category	Details
Period	9.19~20
Location	Daebu Badahyangi Theme Park
Fee	Free
Key Highlights	Daebudo Grapes & Experiences
Connected Attractions	Daebu Haesolgil Trail & Sea

From September 19th to 20th, the very next day,

the Daebudo festival will be taking place at

Daebu Badahyangi Theme Park.

While Daebudo is indeed an island,

its accessibility by car means

the barrier to entry for a day trip from Seoul and the wider Gyeonggi area is low,

unlike Eocheongdo, which requires checking ferry schedules.

Among these five destinations, therefore,

it's the one that most distinctly embodies the spirit

of a 'drive-to island day trip.'

Beyond the direct grape sales and engaging experiences,

another major advantage is the opportunity to combine it with

the Daebu Haesolgil Trail and the beautiful coastline.

Daebudo Grape Festival → Daebu Haesolgil Trail → West Sea

It's a great idea to expand your day trip itinerary this way.

If experiencing the West Sea's nature with kids is your priority, then head to Siheung. If you're looking to combine an island getaway, delicious food, and a scenic West Sea drive, then it's Daebudo. Even though these events happen on the same weekend, your travel goals will be quite different!

So, Where Should You Go?

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Finally, let's make our ultimate choice,

not by the scale of the event, but by

our own personal travel objectives.

Islandtopia September Festival PICK
Your Desired Trip	Recommendation
Islands reachable by ferry	Eocheongdo
A Special Island Trip This Year	Yeosu World Island Expo
Flowers + Sea + Sunset	Taean
Gaetgol Eco Park & Salt Fields with Kids	Siheung
Day Trip Island Near Seoul	Daebudo

While all five of these destinations

can be seen as fantastic domestic travel festivals for September,

the actual reasons for choosing one are completely different!

If you're looking for a day trip from Seoul or the metropolitan area,

Daebudo or Siheung are realistic choices.

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If you want to enjoy the experience of taking a boat to an island,

Gunsan is a better fit.

If your goal is to experience a unique island event

that only happens this year, then Yeosu is the place for you.

If you want to see flowers, the sea, and even a beautiful sunset,

Taean is your best bet.

​	💙 Island-topia Recommended Combinations
​	For a True Island Trip → Eocheongdo
​	West Sea Nature Experience with Kids → Siheung Gaetgol Festival
​	Day Trip near Seoul → Daebu Grape Festival + Haesolgil Trail
​	Island Trip for 1+ Night → Yeosu World Island Expo + Geomodo & Gaedo Islands
​	Flowers and the Sea → Taean Autumn Flower Expo + Coastal Sunset

September isn't like the peak of summer,

so you don't necessarily have to focus your activities around swimming.

Instead, it's a great time to explore island trails, tidal flats, salt farms, coastal walks,

and local delicacies.

This year, in particular,

the schedule flows naturally, starting in early September with Eocheongdo and Yeosu,

moving to Taean in mid-September,

and then Siheung and Daebudo by the third weekend.

So, while choosing one of the recommended West Sea island trips is a good idea,

you could also save the September festivals like a monthly itinerary

and refer to it every weekend you need inspiration.

If you want to take a boat to an island, choose Eocheongdo. If you want a nature experience with kids, choose Siheung. For a day trip near Seoul, choose Daebudo.

Instead of focusing on the names of the September festivals,

it's much easier to decide on a destination if you first choose your preferred travel style.

From now on, rather than just introducing event venues,

I'll try to connect the sea, islands, and surrounding places in each region

and share more detailed information about each one.

So, have a safe trip today,

and I'll see you in my next travelogue! :)