Best time to visit Jeju
There is no single best month for everyone. Spring suits blossoms and coastal walks, summer is the swimming season, and autumn brings drier weather and easier hiking. Winter is cool, with less rain than summer.
Pick your main goal first, then check the weather numbers on the Jeju weather page. Day trips by guide run through the year, so Jeju day tours from Jeju City work as a fallback in any season. Dates below are the 2026 dates, and they shift from year to year.
Best time to visit Jeju by goal
Months and dates for each kind of trip.
| Goal | When | What to know |
|---|---|---|
| Blossoms | Late March | The 2026 Jeonnong-ro festival ran 27 to 29 March with a 1.2 km stretch closed to cars at times. Festival dates do not show full bloom. |
| Swimming | 24 June to 6 September 2026 | 12 named beaches, normal hours 10:00–19:00, plans depend on weather. |
| Hiking Hallasan | April to September, or October to March | Start from 05:00. Summit must be left by 14:30 from April to September and by 13:30 from October to March. |
| Mild, drier sightseeing | April, May and October | Highs of 18.0 to 22.1 °C and under 100 mm of rain a month. |
| Cool weather | December to February | Highs of 8.6 to 11.0 °C and 55.6 to 67.5 mm of rain a month. |
For most first visits, April, May or October give a good mix of mild temperatures and lower rain. Choose late June to early September only if swimming is the main plan.
Our pick: the south in summer
Our take: a south coast day tour that changes one stop in the summer months.
Hand-picked tours, booked through GetYourGuide. Prices are indicative starting prices in US dollars (as of October 2026). Tap a tour for live availability and the current price in your currency.
Jeju tours through the year
East and southwest day trips from Jeju City, with live prices and availability.
Spring: blossoms and coastal walks
March to May.
The Jeonnong-ro blossom route
The Jeonnong-ro cherry blossom festival ran from 27 to 29 March in 2026. A 1.2 km stretch is car-free at times. The festival period is not proof of full bloom, so check for the current year's dates before you book flights.
Spring weather
Highs rise from 13.3 °C in March to 22.1 °C in May. Rain stays below 100 mm a month. Bring layers, because March nights are still cool.
Olle trail guide →Summer: beaches and heat
June to August.
Beach season 2026
The season ran from 24 June to 6 September for 12 named beaches, among them Hyeopjae, Hamdeok, Woljeong and Jungmun Saekdal. Normal bathing hours are 10:00–19:00. From 15 July to 15 August, Woljeong and Samyang stayed open until 20:00, and Hyeopjae and Iho Tewoo until 21:00. The season plan depends on weather.
Jeju beaches →Heat and rain
Highs reach 29.3 °C in July and 30.1 °C in August. August is also the wettest month at 272.3 mm. Typhoons are most likely from July to September, so keep your plans flexible.
Autumn and winter: hiking and cooler coasts
October to February.
Autumn hiking
October brings 95.1 mm of rain against 272.3 mm in August, with highs of 21.6 °C. The winter hiking rules start in October. Entry checkpoints close at 11:30 and the summit must be left by 13:30, against 14:30 from April to September. Plan for the 11:30 cut-off. Autumn is not a licence for a late start.
Reservation
The upper sections to Baengnokdam need a reservation. Since 1 December 2025, slots run 05:00–08:00 and 08:01–11:30, and bookings open on the first working day of the previous month at 09:00. A reservation does not guarantee the trail stays open.
Hallasan hike →Winter
Highs of 8.6 to 11.0 °C and lows of 3.7 to 5.6 °C make the coast cool but workable. The beach season is over, and the season dates do not mean bathing is banned on every shore.
Plan the rest of your trip
After you pick your month.
Best time to visit Jeju: frequently asked questions
What is the best month to visit Jeju?
It depends on your goal. April, May and October are mild with under 100 mm of rain a month. June to early September suits swimming. There is no single best month for every traveller.
When can I swim on Jeju?
The 2026 beach season ran from 24 June to 6 September at 12 named beaches. Normal bathing hours were 10:00–19:00. Use only marked zones and check for lifeguards.
When do the cherry blossoms bloom?
The 2026 Jeonnong-ro festival ran from 27 to 29 March. Festival dates are not a bloom forecast, and the dates change each year, so check them before you plan.
Is autumn a good time to hike Hallasan?
October is drier than summer, but the winter time limits apply: checkpoints close at 11:30 and the summit must be left by 13:30. Start early and reserve the upper sections.
Will a K-ETA rule affect my travel month?
The exemption for many nationalities runs to 31 December 2026. If you travel later, check whether it has been extended.
Is Jeju-Island.org an official site?
No. This is an independent travel guide with no connection to the provincial government, Visit Jeju, the Korea Tourism Organization or tour operators.