Mud festival in South Korea
In July, the peaceful seaside town of Boryeong turned into a chaos of mud for 9 days. We recommend putting this festival on your bucket list.
Jeju Weather in July
July in Jeju averages 28°C (82°F) during the day and 24°C (75°F) at night. July is part of the rainy season, with around 189 mm (7.4 in) of rainfall and frequent showers.
Rainfall in Jeju in July
Jeju is in the rainy season in July, with rain on around 15 days and an average of 189 mm (7.4 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Jeju in July
Daytime temperatures in Jeju reach 28°C (82°F) in July, dropping to 24°C (75°F) at night. Summer occurs in July. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights are warm at 24°C (75°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Jeju in July
Enjoy a sunny month with about 195 hours of sunshine, even though this month falls in the wet season. There is still enough sun to enjoy the outdoors.For Jeju itself, October generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Jeju Temperature in July
Min Temperature
24°C (75°F)
Max Temperature
28°C (82°F)
Chance of Rain
50%
Precipitation
189 mm (7.4 in)
Rainy days
15 days
Humidity
78%
Sunshine
195 hours
Percentage Sunshine
Jeju Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Jeju - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Jeju typically rise from around 27°C (81°F) at the start of July to approximately 31°C (88°F) by the end. Nights are warm, with lows typically ranging from 21°C (70°F) to 25°C (77°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather records for Jeju in July
Browse day-by-day weather records for Jeju spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jeju historical weather extremes in July
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Jeju.
- On July 30, 2013, temperatures climbed to 37°C (99°F), marking the warmest July day on record.
- The coldest July day was on July 10, 1996, with a maximum of 19°C (66°F).
- The lowest overnight temperature recorded in July was 16°C (61°F) (July 8, 1982).
Best Places in South Korea in July
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in July →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Jeju in July
Warm but pleasant conditions in Jeju in July. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Jeju in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Jeju 3-Day Forecast
More climate data for Jeju
Temperature Rainfall Sunshine Humidity
See the full Jeju climate overview or explore weather in South Korea.
Popular in July
Where to go in July - average daytime high across popular destinations.
Jeonju
30°C (86°F) Gyeongju30°C (86°F) Seoul30°C (86°F) Suwon30°C (86°F) Seogwipo29°C (84°F) Incheon28°C (82°F) Busan28°C (82°F) Jeju28°C (82°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Mud festival in South Korea
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