Jeju weather in August
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Jeju August weather at a glance
In August, Jeju averages 28.3°C, with typical highs of 30.7°C and lows of 26.1°C. The historical average is 20 wet days and 84% humidity.
Jeju August temperature & humidity
Jeju August rain & wet days
Pack a light rain jacket, waterproof pouch and quick-dry shoes. Keep an indoor stop available between outdoor activities.
What to wear in Jeju in August
Expect intense heat. Pack lightweight quick-dry clothing, sun protection and a refillable bottle. Rain is frequent at roughly 20 days in the month; pack a rain jacket and water-resistant shoes. High humidity makes quick-dry clothing and a spare top especially useful.
- DaytimeBreathable short sleeves, hat and sunscreen · average high 30.7°C
- Morning & eveningLight layer for air-conditioned rooms · average low 26.1°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Jeju August sunrise & sunset times
2026 August · Local time (Asia/Seoul)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-08-01 | 05:46 | 19:34 | 13h 48m |
| 2026-08-15 | 05:56 | 19:21 | 13h 25m |
| 2026-08-31 | 06:07 | 19:01 | 12h 54m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
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Best months to visit Jeju
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
August weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Jeju weather like in August?
In August, Jeju averages 28.3°C, with typical highs of 30.7°C and lows of 26.1°C. The historical average is 20 wet days and 84% humidity. Our weather-comfort rating for this month is challenging.
Does it rain a lot in Jeju in August?
There are about 20 wet days in August. Pack a rain jacket and water-resistant shoes.
What should I wear in Jeju in August?
Expect intense heat. Pack lightweight quick-dry clothing, sun protection and a refillable bottle. Rain is frequent at roughly 20 days in the month; pack a rain jacket and water-resistant shoes. High humidity makes quick-dry clothing and a spare top especially useful.
What are the best months to visit Jeju?
Recent weather data rates May among the more comfortable months.
Where can I check Jeju weather in August in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Jeju in August?
On 2026-08-15, calculated sunrise is 05:56 and sunset is 19:21 in local time (Asia/Seoul). Times vary by date and terrain.
Jeju weather by month
More South Korea destinations in August
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations