Seoul weather in August
Seoul in August averages 27°C (80°F), 390 mm of rain and 4.7 hours of sun a day. It is one of the wetter months of the year here.
Of the twelve months in Seoul, August is the warmest, the second wettest and the second dullest.
- Average temp
- 27°C (80°F)
23–30°C · 74–86°F
- Rainfall
- 390 mm
A wet month
- Sunshine
- 4.7 h
hours per day
What is Seoul like in August?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Expect frequent rain — this is a wet month.
Evening
Evenings stay warm.
What should I pack for Seoul in August?
High-factor sun cream
With daytime highs around 30°C, burn time is short even in shade.
Sunglasses and a brimmed hat
Midday glare is the part people underpack for, not the heat itself.
Loose cotton or linen
Synthetics stop working once you are sweating through them all day.
A refillable water bottle
Daily highs this warm need roughly double the water a temperate day does.
A proper waterproof, not a folding umbrella
390 mm in the month usually arrives as heavy bursts that an umbrella will not cover.
A dry bag for phone and documents
Worth it for one downpour caught between the taxi and the door.
August compared with July and September
August in Seoul is 1.2°C warmer than July and 33 mm drier than it, which averages 25°C (78°F).
August in Seoul is 4.6°C warmer than September and 233 mm wetter than it, which averages 22°C (72°F).
Daylight in Seoul in August
On 15 August the sun is up for 13 hours 37 minutes in Seoul, rising about 05:47 and setting about 19:24 local time.
August ends 1 hour 3 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 1 hour 8 minutes short of June, the longest-lit month here.
Where to stay in Seoul
Dates are a starting point for August.
Travel guides for Seoul
What to read before you book.
Seoul weather by month
TemperatureRainfall
How August compares with the rest of the year
August is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | -2°C / 29°F | 18 mm |
| February | 1°C / 34°F | 28 mm |
| March | 6°C / 44°F | 38 mm |
| April | 13°C / 55°F | 70 mm |
| May | 19°C / 65°F | 104 mm |
| June | 23°C / 74°F | 138 mm |
| July | 25°C / 78°F | 422 mm |
| August | 27°C / 80°F | 390 mm |
| September | 22°C / 72°F | 156 mm |
| October | 15°C / 60°F | 49 mm |
| November | 8°C / 46°F | 50 mm |
| December | 0°C / 32°F | 20 mm |
Similar weather in August
Other destinations whose August averages sit close to this one.
Check another month
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FAQs about Seoul in August
August climate averages for Seoul, 1991–2020.
Seoul averages 27°C (80°F) in August, ranging from about 23°C (74°F) at night to 30°C (86°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Yes, a lot. August brings about 390 mm, which makes it one of the wetter months here — expect heavy bursts rather than all-day drizzle.
Yes. August averages 27°C (80°F) against 22°C (72°F) in September — 4.6°C warmer.
August is 1.2°C warmer than July, and 33 mm drier.
It is outside the easiest window. The most comfortable stretch here is April to June; August sits outside it, which usually means more heat, more rain, or both — worth it if you would rather have the place to yourself.
About 4.7 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what August is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 13 hours 37 minutes of daylight in mid-August, against 14 hours 45 minutes in June and 9 hours 35 minutes in December.
On 15 August, sunrise is about 05:47 and sunset about 19:24 local time. Both shift across the month — the month ends 1 hour 3 minutes shorter than it starts.
