South Korea

Seoul in August: weather & travel advice

This month's data profile

Rain shapes the decision

Seoul in August is climatically mixed. The average daily high is around 28 °C. With about 18 rainy days it is very wet.

Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.

Rank among 12 monthly averages

54/100 · #8

Warmth

Dryness

#11

Sun

Published best categories: none

Gyedong-gil lane with climbing plants at golden hour in Seoul

Seoul · AugustPhoto: Basile Morin · CC BY-SA 4.0

Average high: 28 °C
Average low: 22 °C
Rainy days (est.): 18 rainy days (est.)
Sun (est.): 6 h/day
Humidity: 84 %

Climate evidence with direct month comparison

The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.

Climate averages for Seoul: selected and adjacent months
Month	Avg high °C	Avg low °C	Rainy days (est.)	Precipitation mm	Sun h/day (est.)	Humidity %	Wind m/s	Score
July	28	21	18	329	5.6	85	2.7	55
August (selected)	28	22	18	275	5.7	84	2.5	54
September	25	17	11	147	5.3	80	2.5	79

How do the previous and next months compare?

Baseline: August (54/100)

Positive and negative values show the change from the selected month.

	Score Δ	Average high Δ	Average low Δ	Rainy days Δ	Rain Δ	Sun Δ	Humidity Δ	Wind Δ
July	+1	-0.6 °C	-0.8 °C	+0.7	+53.9 mm	-0.1 h	+0.8 %	+0.1 m/s
September	+25	-3.8 °C	-5.1 °C	-7.1	-127.9 mm	-0.4 h	-4.2 %	±0 m/s

All twelve months in context

JanLimited49 FebLimited52 MarLimited55 AprGood69 MayExcellent83 JunGood79 JulLimited55 AugLimited54 SepGood79 OctGood76 NovLimited52 DecLimited48

Rainy days (estimated)

Sunshine hours (estimated)h/day

Average daily high°C

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Where to stay in Seoul

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Useful next decisions

Seoul · Month by month

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Frequently asked questions

How warm is Seoul in August?

The average daily high is around 28 °C, with an average daily low of about 22 °C.

Does it rain a lot in Seoul in August?

The curated estimate is about 18 rainy days per month, not a directly measured long-term average. Total precipitation averages around 275 mm for the month. A rainy day does not mean all-day rain.

When is the best time to visit Seoul?

By the climate score, May, June, September and October are the strongest months for Seoul. August is not among them.