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Seoul in August: Weather, Average temperature and Climate

Take a look at past year’s weather for Seoul in August and see if it is worth visiting.
Check flight prices to Seoul on Avionero:
August

Weather in Seoul in August 2024

OK Weather
Warm
☁️
Cloudy
✈️
$1,687 - $1,923
If you plan to visit Seoul in August, the weather is typically alright, with an average high temperature of +86°F during the day and approximately 5 sunny days. Expect some rainy, though, as there are typically 10 rainy days in the month and around 222 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • August is usually the hottest month of the year in Seoul;

Average weather

☀️
+86°F
Avg. max. temperature
+57°F
Min.
+100°F
Max.
222 mm
Total precipitation
76%
Avg. humidity
2 m/s
Avg. wind
5 ☀️
Sunny Days
16 ⛅️
Cloudy
10 🌦
Rainy
Our opinion: Seoul has OK weather in August.

Average temperature in Seoul in August

Here are the expected maximum, average and minimum temperatures in Seoul for August based on the historical data.
Last Year
Historical Data

Going from a maximum of +91°F during the day to a minimum of +59°F during the night, the temperature in August averages around +84°F.

The average maximum temperature goes down 39% by the end of the month, compared with the beginning of the month, from +90°F to +77°F.

Is Seoul warm or cold in August?

Seoul is typically warm in August.

Maximum temperatures go up compared to the previous month from +84°F to +86°F. The minimum temperature also goes up from +72°F to +72°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

August is the hottest month in Seoul, here is the comparison with other months:

Travel to Seoul

Click to see more details
✈️
24
Flights per week
$1,687
Min. Price
$1,923
Max. Price

Climate in Seoul in August

Seoul weather looks like this, on average, in August and the surrounding months.
JulyAugustSeptember
Avg. temperature
+84°F+86°F+79°F
Min. temperature
+59°F+57°F+41°F
Max. temperature
+100°F+100°F+91°F
Rainfall
261 mm222 mm116 mm
Wind
2 m/s2 m/s1 m/s
Humidity
77%76%71%
Air pressure
1005 HPa1006 HPa1012 HPa
Sunny days
3511
Cloudy days
171614
Rainy days
11105
Snowy days
000

August weather is still as ok as in July. It’s getting warmer as August arrives. The average maximum temperature goes up from +84°F to +86°F during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 261 mm to 222 mm. It feels drier, as humidity decreases from 77% to 76%. The average wind speed doesn’t change much during August, staying around 2 m/s. The good news is there are likely to be more sunny days in August, from 3 to 5.

But maybe it is worth considering traveling in September as the weather gets better.

Wind

Wind speed in Seoul in August based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Seoul is gradually decreasing during August, going from 4 m/s to 1 m/s over the course of the month.

Rain

Amount of rainfall in mm during August in Seoul based on historical data.
Last Year
Historical Data
Typically, there is a 61% chance of rain on an average day in August, with total rainfall of approximately 327 mm. The maximum amount of rainfall per day is around 88 mm, which is considered heavy rain. August is a pretty wet month with over 19 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
August is one of the rainiest months in Seoul, here is a comparison with other months, total mm:
Seoul wettest month is July, where a typical day has a 35% chance of precipitation and 261 mm of rainfall per day. January, on the other hand, is the driest month with a mere 3% chance of precipitation and 10 mm of rainfall per day.

How was the weather last August in Seoul?

This is the weather in Seoul in August 2023:
1 August
🌧️
+90°F
2 August
🌧️
+84°F
3 August
☁️
+88°F
4 August
☁️
+91°F
5 August
☁️
+90°F
6 August
🌫️
+88°F
7 August
🌧️
+89°F
8 August
🌧️
+83°F
9 August
🌧️
+80°F
10 August
☁️
+83°F
11 August
☁️
+82°F
12 August
☀️
+89°F
13 August
🌧️
+80°F
14 August
☁️
+89°F
15 August
🌧️
+87°F
16 August
☁️
+86°F
17 August
☁️
+87°F
18 August
☀️
+86°F
19 August
🌧️
+82°F
20 August
☁️
+89°F
21 August
☀️
+90°F
22 August
🌧️
+86°F
23 August
☀️
+86°F
24 August
☁️
+81°F
25 August
🌧️
+75°F
26 August
☀️
+83°F
27 August
☀️
+78°F
28 August
☀️
+83°F
29 August
🌧️
+72°F
30 August
🌧️
+68°F
31 August
☀️
+77°F
In August 2023 Seoul had 8 sunny days, 10 cloudy days, and 12 rainy days. The average maximum temperature was +84°F, with an absolute maximum of +91°F and a minimum of +68°F. The average humidity was 81%, with a maximum of 100% and a minimum of 36%. The average wind speed was 3 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in August?

Climate Change Over the Years

This is how Seoul climate has changed over the last 43 years.

The climate in Seoul in August has not changed that much over the last 43 years.

The average temperature was the lowest in 2002 (+83°F) and the highest in 2018 (+93°F). The driest year was 2015 with only 26 mm of rainfall, and the wettest year was 2020 with 1159 mm.

FAQ

Frequently asked questions about the weather in Seoul in August:

Is August a good time to visit Seoul?

It’s always a good time to visit Seoul, but the weather is changeable in August, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Seoul in August?

August is warm in Seoul. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Seoul rainy in August?

Seoul is often rainy in August. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Seoul in August?

Usually, it’s not very sunny in Seoul in August, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

How much does it cost to fly to Seoul in August?

The normal prices to fly to Seoul is $1,687 - $1,923. It means that the majority of our users have picked flights in this range. To find the best price we recommend you search early, using our flexible dates feature.

Monthly weather in Seoul

Source of the data

For this page, we’ve looked at the typical weather in Seoul, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.