Month guide · Jeju · South Korea
Jeju in August
What August is really like in Jeju: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Unknown author, CC BY-SA 3.0
Quick answer
August is a quieter month with trade-offs. Expect average highs of 30°C (86°F), lows of 25°C (77°F), about 13 rainy days and roughly 13.4 hours of daylight. The hottest month and peak beach season, with warm sea and crowded beaches in the first half; typhoons can disrupt flights and ferries.
Key facts
- Average high / low
- 30°C (86°F) / 25°C (77°F)
- Rainy days
- About 13
- Daylight
- About 13.4 hours
- Sea temperature
- 27°C (81°F)
- Crowds
- Very busy
- Hotel prices
- Highest
Weather in August
August is the warmest month in Jeju: days average 30°C (86°F) against a yearly average high of 19°C (66°F), and nights fall to about 25°C (77°F). Rain falls on roughly 13 of its 31 days. Compared with July (29°C (84°F)), August is about as warm; by September highs drop to around 26°C (79°F).
- Sunrise (15 August)
- About 05:56
- Sunset (15 August)
- About 19:21
- Daylight
- About 13.4 hours
- Sea
- 27°C (81°F)
Summer (June–August). Rainy season around late June and July, then hot beach weather; the busiest and most expensive period, with typhoon risk late in the season.
Crowds and prices
On a 1–5 scale, August rates 5 for crowds (the peak is July at 5) and 5 for hotel prices (highest in July). Book accommodation early: August is one of the pricier months.
Events in August
- Summer holiday peak (late July to mid-August)
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in August
With frequent rain, plan around indoor sights and keep outdoor time flexible.
Experience · Seogwipo
Jeju Olle Trail Route 7
The Jeju Olle Trail is a network of numbered walking routes around the island, each marked with blue and orange ribbons and arrows.
- Time needed
- Half to full day
- Cost
- Free
- Free
- Outdoors
- Active
- Views
Nature · Gujwa
Manjanggul Lava Tube
Sections have closed for safety works in recent years, so check the official Jeju sites before driving out; bring a light jacket and grippy shoes for the wet floor.
- Time needed
- 1 hour
- Cost
- Low cost
- Nature
- Rainy day
- Kids
Market · Jeju City Old Town
Jeju Dongmun Traditional Market
Jeju City's main traditional market sells hairtail, abalone, hallabong and dried seafood under covered lanes, and its night market section fills with stalls selling black-pork skewers, grilled abalone and tangerine drinks.
- Time needed
- 1–2 hours
- Cost
- Low cost
- Food
- After dark
- Shopping
- Rainy day
Museum · Jocheon
Jeju Stone Park
Start in the indoor museum to understand the island's geology, then walk the outdoor circuit, which takes about an hour.
- Time needed
- 2–3 hours
- Cost
- Low cost
- History
- Rainy day
- Kids
- Outdoors
The sea averages 27°C (81°F) — warm enough to swim. Best beaches near Jeju.
What to pack
For highs near 30°C, lows near 25°C and 13 wet days: light, breathable clothes, a sun hat and high-factor sunscreen; a compact umbrella and waterproof shoes — rain is frequent; comfortable walking shoes.
Is August a good time to visit Jeju?
A quieter month with trade-offs, with a notable event on the calendar. If your dates are flexible, April–May and October–November are better overall. Compare every month.
Jeju in other months
Questions travellers ask
+Is August a good time to visit Jeju?
It is a quieter month with trade-offs. The hottest month and peak beach season, with warm sea and crowded beaches in the first half; typhoons can disrupt flights and ferries.
+How warm is Jeju in August?
Average highs are around 30°C (86°F) and lows around 25°C (77°F).
+Does it rain a lot in Jeju in August?
Expect rain on about 13 days of the month, so pack for wet weather.