Seoul in Summer — Weather & What to Expect
Summer in Seoul (June, July, August) averages daytime highs of 27.8°C and lows of 20.6°C, with around 869.9mm of rain across the season (51 rainy days in total). It includes some of the best months of the year to visit (June, July, August).
In the northern hemisphere, summer in Seoul covers June, July, August.
Summer in Seoul month by month
| Month | High | Low | Rain | Rainy days | Rating |
|---|---|---|---|---|---|
| June | 26.3°C | 17.8°C | 193.2mm | 13 | 9/10 |
| July | 28.7°C | 21.8°C | 274.8mm | 18 | 8/10 |
| August | 28.4°C | 22.1°C | 401.9mm | 20 | 8/10 |
What to pack for Seoul in summer
- Light layers
- Sunscreen
- T-shirts and light trousers or shorts
- Compact travel umbrella
- Waterproof jacket
- Quick-dry clothing
Frequently Asked Questions
Is summer a good time to visit Seoul?
Summer in Seoul rates around 8/10 — good time to visit. Average highs are 27.8°C with 869.9mm of rain across the season.
How hot is Seoul in summer?
Daytime highs average 27.8°C (82.0°F) across June, July, August, with nights around 20.6°C.
What months are summer in Seoul?
Seoul is in the northern hemisphere, so summer covers June, July, August.
See also: best time to visit Seoul · Seoul annual climate · Seoul in spring · Seoul in autumn · Seoul in winter
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Once you know what summer in Seoul looks like, find out exactly what to pack for Seoul at 247PackingList. For currency, language and country facts, see the South Korea guide at 247CountryInfo.
Summer in Seoul — what to pack
Thermal travel layers
Pack proper layers — winters are genuinely cold and evenings drop fast year-round.
Check Price →Check clothing sizes in South Korea at 247Sizing before you shop.
More summer travel essentials
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.