Weather in Seoul 🇰🇷
Monthly weather averages & travel planning
July
Avg Temp
28°C
Rain Days
17 days
Sun Hours
8 hrs
Humidity
65%
Asia › 🇰🇷 South Korea › Seoul
Updated: March 2026
Is July a Good Time to Visit Seoul?
4/10
Fair
July is a fair time to visit Seoul (4/10). With 8 daily sunshine hours and only 17 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 10th sunniest of the year in Seoul. July suits travellers visiting for indoor culture, food, and architecture rather than outdoor activities. Pack accordingly for 17 potential rain days. August offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 17 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. Planning tips: most accommodation categories have availability, and last-minute deals are common. The quieter streets and shorter queues can make this a genuinely enjoyable time to visit for the right type of traveller. Budget-conscious visitors will find the best value of the year in this period.
vs June:26°C avg high
July weather in Seoul is defined by a daily temperature swing from 22°C at night to 28°C during the afternoon. Humidity averages 65%, and you can count on around 8 sunshine hours each day. That combination makes July warm and lush, though dressing in breathable fabrics keeps things manageable.
28°C
82°F
Avg High
22°C
72°F
Avg Low
17 days
315 mm total
Rain Days
8h
per day avg
Sunshine
65%
Moderate
Humidity
Temperature in Seoul in July
The 6°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 9 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Wind averages 15 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 82°F average high, 72°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature Trends
High
Low
Rainfall (mm)
0-20 mm21-50 mm51-100 mm100+ mm
What to Wear in Seoul in July
Morning22°CBefore the day warms up
Afternoon28°CPeak daytime temperature
Evening25°CAfter sunset cools down
Packing for Seoul in July means dressing for 28°C days and 22°C evenings. A light cotton tee with a casual overshirt works well at 28°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 22°C, a modest 6°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. With 17 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region.
Local tip: Temple and religious site visits require covered shoulders and knees in most of Seoul's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.
Events in Seoul in July
July has no major festivals or public holidays in Seoul, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
What to Pack for Seoul in July
Based on 28°C average highs and 17 rainy days
- Light layers for morning and evening
- Breathable T-shirts and comfortable trousers
- UV-protective sunglasses
- Quick-dry travel towel
- Anti-chafe balm for long walking days
- Moisture-wicking synthetic fabrics for active days
- Compact folding umbrella
- Waterproof outer layer or packable rain jacket
- Quick-dry clothing that recovers fast after a shower
- SPF 30+ sunscreen
- Comfortable walking shoes (a second pair lets the first air out overnight)
- Universal travel adapter
- Small day pack for city exploration
- Reusable water bottle
Best Activities in Seoul in July
- Explore outdoor markets and street food stallsMid-morning (10am-12pm)At 28°C, the temperature is ideal for extended walking without overheating
- Guided walking tour of the historic centreMorning or late afternoonComfortable temperatures allow several hours on foot without fatigue
- Visit rooftop viewpoints and observation decksGolden hour (1 hour before sunset)Warm clear evenings provide exceptional visibility for panoramic photography
- Day trip to the surrounding countryside or coastFull day (depart by 8am)July is reliably dry enough for rural day trips without weather risk
- Spend a morning in the national or city art museumOpens at 10am; arrive earlyWith 17 rain days expected, having a full-day indoor plan is practical insurance
- Cooking class focused on regional cuisineHalf-day sessions run 10am-1pm or 3-6pmIndoor activity that fills a rainy half-day with genuine cultural content
- Visit covered historical sites: cathedral, palace, or bazaarAny time; most crowded middayRoofed monuments and covered markets provide exploration without weather exposure
- Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningJuly brings distinct seasonal changes to public green spaces worth exploring
- Seek out chilled local specialities: cold-brew tea, ice desserts, or chilled seafood at street-level stallsAny time; most atmospheric in evening marketsHot-weather street food culture peaks in July, with vendors setting up specifically for warm evenings
Why is Seoul warm in July?
Seoul's July heat is driven by the Asian summer monsoon system, as the low-pressure cell that forms over the heated landmass draws warm, humid air from the oceans. The result is temperatures averaging 28°C with high moisture in the air. Overnight temperatures remain elevated at 22°C, as clouds and humidity prevent the earth from radiating heat away after sunset. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Frequently Asked Questions
Seoul in July
In July, Seoul experiences average highs of 28°C (82°F) and lows of 22°C (72°F). Expect around 17 rainy days and 8 hours of sunshine per day, with humidity averaging 65%. The 6°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 9, so sun protection is advisable on clear days.
Seoul typically sees 17 rainy days in July, with total precipitation of around 315mm. This is a notably wet period. A waterproof jacket or compact umbrella is essential, and it is worth building indoor alternatives into your daily itinerary for the inevitable rainy stretches. For context, the driest month in Seoul typically sees 4-6 fewer rain days than July.
Pack light layers, a light jacket for evenings, comfortable walking shoes, and sunscreen for Seoul in July. Daytime temperatures of 28°C are pleasant, but the evening drop to 22°C means a jacket is essential if you plan to be out after dark. With 17 rainy days, bring a compact umbrella or waterproof jacket for unexpected showers. Comfortable walking shoes are a priority given the amount of ground most visitors cover.
July is a reasonable time to visit Seoul. Expect 17 rainy days, so pack a light rain layer for flexibility. Average temperatures of 28°C make outdoor exploration comfortable during the dry periods. With 8 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.
The average high temperature in Seoul in July is 28°C (82°F), and the average low is 22°C (72°F). The mean daily temperature is approximately 25°C (77°F). The day-to-night range of 6°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Seoul is generally April. April offers the most sunshine at 10 hours per day and only 7 rainy days. Average temperatures reach 17°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around April gives you the best chance of dry, bright weather.
July is shoulder or low season in Seoul, meaning fewer tourists and generally lower prices than peak months. With 8 sunshine hours and 17 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In July, Seoul suits a range of activities thanks to mild temperatures around 28°C. With frequent rain, indoor activities and covered attractions are a smart choice. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 8 hours of sunshine, parks and waterfront walks are particularly enjoyable.
July ranks 10th sunniest of the year in Seoul, with an average 8 daily sunshine hours. The driest months are January, February, and October. August is the hottest month (29°C avg high); January is the coolest (1°C). From here, temperatures rise 1°C into August. Compared to last month (June: 26°C high, 9 rain days), July is warmer and wetter. July is one of the least sunny months, but that often means lower prices and fewer fellow tourists.
Year-Round Climate
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 1°C | -7°C | 4 | 8h | View |
| February | 4°C | -5°C | 4 | 9h | View |
| March | 10°C | 0°C | 6 | 9h | View |
| April | 17°C | 6°C | 7 | 10h | View |
| May | 22°C | 12°C | 8 | 10h | View |
| June | 26°C | 17°C | 9 | 10h | View |
| July | 28°C | 22°C | 17 | 8h | View |
| August | 29°C | 22°C | 16 | 9h | View |
| September | 25°C | 16°C | 8 | 9h | View |
| October | 19°C | 9°C | 5 | 9h | View |
| November | 11°C | 2°C | 7 | 7h | View |
| December | 3°C | -5°C | 5 | 8h | View |
January
4 rain days, 8h sun
1°-7°
February
4 rain days, 9h sun
4°-5°
March
6 rain days, 9h sun
10°0°
April
7 rain days, 10h sun
17°6°
May
8 rain days, 10h sun
22°12°
June
9 rain days, 10h sun
26°17°
July
17 rain days, 8h sun
28°22°
August
16 rain days, 9h sun
29°22°
September
8 rain days, 9h sun
25°16°
October
5 rain days, 9h sun
19°9°
November
7 rain days, 7h sun
11°2°
December
5 rain days, 8h sun
3°-5°
Other Months in Seoul
Plan Your Trip to Seoul
Nearby Destinations
Cities within 500 km with comparable weather conditions
Data Sources for Seoul
Climate normals represent 30-year averages (1991-2020). Individual years may vary.