Weather: Jeju Island — August
It's a rainy period, but great for indoor activities, museums, and lower prices. Recommended month to visit.
☔ Climate Overview
August is a wet time to visit Jeju Island. Hot conditions with temperatures reaching 30°C—stay hydrated and seek shade. This is one of the wettest months—waterproof gear is essential. As peak season, expect higher prices and more tourists. Sea temperature of 30°C is perfect for swimming.
Based on weather comfort, crowds, prices, and activity options
30°C
26°C
19days
13.4h
Feels like 36°C / 31°C — humidity makes it feel warmer
177mm
9.9h/day
83%
Very Muggy7.1
Very High16 km/h (gusts 36)
30°C 🏊 Comfortable
Is August a good time to visit Jeju Island?
It's a rainy period, but great for indoor activities, museums, and lower prices.
Now
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Air Quality
Travel Context
- CrowdsQuiet
- Travel Costs Peak Rates
Daylight
05:57
19:22
Visiting Jeju Island in August: Pros & Cons
Pros
- Abundant sunshine for beach and outdoor fun
- Warm sea perfect for swimming and snorkeling
Cons
- Frequent rain may disrupt outdoor activities
- Peak season — expect crowds and higher prices
- High humidity makes the heat feel oppressive
Things to Do in August
Recommended for This Weather
Jeju Island Weather by Month
| Month | Avg High | Avg Low | Rain | Sunshine | Humidity | UV Index | Crowds | Condition |
|---|---|---|---|---|---|---|---|---|
| Jan | 10°C | 5°C | 9d (59mm) | 5.7h | 70% Humid | 3.3 Moderate | | Good |
| Feb | 10°C | 6°C | 9d (79mm) | 6.3h | 71% Humid | 4.4 Moderate | | Good |
| Mar | 14°C | 9°C | 10d (98mm) | 7.6h | 72% Humid | 6.2 High | | Good |
| Apr | 18°C | 12°C | 8d (93mm) | 8.9h | 72% Humid | 7.8 Very High | | Excellent |
| May | 21°C | 16°C | 9d (129mm) | 9.2h | 77% Humid | 8.2 Very High | | Excellent |
| Jun | 25°C | 21°C | 13d (213mm) | 8h | 85% Very Humid | 7.2 Very High | | Wet |
| Jul | 29°C | 25°C | 18d (254mm) | 8.4h | 87% Very Muggy | 6.8 High | | Wet |
| Aug Current | 30°C | 26°C | 19d (177mm) | 9.9h | 83% Very Muggy | 7.1 Very High | | Wet |
| Sep | 28°C | 24°C | 17d (275mm) | 7.9h | 81% Very Humid | 5.6 High | | Excellent |
| Oct | 22°C | 18°C | 7d (48mm) | 8.2h | 72% Humid | 5.2 High | | Excellent |
| Nov | 17°C | 13°C | 7d (97mm) | 6.9h | 70% Humid | 3.9 Moderate | | Good |
| Dec | 11°C | 7°C | 7d (31mm) | 5.8h | 68% Humid | 3 Moderate | | Good |
Jeju Island
Volcanic island, including waterfalls, Hallasan Mountain hike and Seongsan Sunrise Peak, lava tubes, beaches, and Hallasan crater.
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What to Pack for August
Light, breathable fabrics like cotton and linen are essential. Opt for loose-fitting clothing in light colors to stay cool. A waterproof jacket and shoes are non-negotiable — showers are frequent. Don't forget a wide-brimmed hat and high-SPF sunscreen — the sun is strong.
🎒Personalized Packing List
Tell us about your trip and we'll create a custom packing list based on the weather.
Your Packing List
📋Essentials
👕Clothing
👟Footwear
🎒Accessories
🧴Toiletries & Health
Planning a trip to Jeju Island?
Frequently Asked Questions
Is August a good time to visit Jeju Island?
Does it get cold at night in Jeju Island in August?
What should I pack for Jeju Island in August?
Does it rain a lot in Jeju Island in August?
Can you swim in Jeju Island in August?
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Is August peak season in Jeju Island?
More Jeju Island Guides
Best Time to Visit
Coming soon
Things to Do
Coming soon
Where to Stay
Best neighborhoods and hotel recommendations
Cost & Budget
Daily costs, money-saving tips, and budget breakdown
Itineraries
Coming soon
Overview
Complete travel guide for Jeju Island: top things to do, itineraries, and typical costs.