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.
Ulsan Weather in July
July in Ulsan brings high temperatures, with highs of 29°C (84°F) and nights dropping to 23°C (73°F). The rainy season is in full swing this month, so frequent downpours are part of the picture.
Rainfall in Ulsan in July
As part of the rainy season, Ulsan sees around 13 days of rain in July, with an average of 213 mm (8.4 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.
Temperature in Ulsan in July
In July, Ulsan sees high temperatures, with highs of 29°C (84°F). Nights drop to around 23°C (73°F). This kind of day-to-night contrast is typical for this time of year. Nights are mild at around 23°C (73°F), which is comfortable for most people.
Sunshine in Ulsan in July
The month experiences a moderate amount of sunlight, with 152 hours of sunshine. This provides a nice balance between sunshine and rain.Should you favor a climate that's both dry and comfortably warm, October typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Ulsan Temperature in July
Min Temperature
23°C (73°F)
Max Temperature
29°C (84°F)
Chance of Rain
44%
Precipitation
213 mm (8.4 in)
Rainy days
13 days
Humidity
77%
Sunshine
152 hours
Percentage Sunshine
35%
Ulsan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ulsan - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ulsan typically rise from around 28°C (82°F) at the start of July to approximately 32°C (90°F) by the end. Nights are warm, with lows typically ranging from 20°C (68°F) to 24°C (75°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 Ulsan in July
Browse day-by-day weather records for Ulsan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ulsan historical weather extremes in July
Our historical data for Ulsan spans 1976 to 2026, revealing these weather extremes.
- The hottest July day on record in Ulsan reached 39°C (102°F) (July 18, 1994).
- The coldest July day was on July 3, 1976, with a maximum of 19°C (66°F).
- The lowest overnight temperature recorded in July was 14°C (57°F) (July 3, 1993).
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 Ulsan in July
Warm but pleasant conditions in Ulsan 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. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Ulsan 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
Ulsan 3-Day Forecast
More climate data for Ulsan
Temperature Rainfall Sunshine Humidity
See the full Ulsan 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
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Mud festival in South Korea
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