August weather forecast
Seoul, South Korea

The Dongdaemun Gate in Seoul city, South Korea
The Dongdaemun Gate in Seoul city, South Korea

Weather in August

August, the last month of the summer in Seoul, is another warm month, with an average temperature varying between 29.6°C (85.3°F) and 22.4°C (72.3°F).

Temperature

August is the warmest month, with an average high-temperature of 29.6°C (85.3°F) and an average low-temperature of 22.4°C (72.3°F).

Heat index

In August, the average heat index is evaluated at a torrid 35°C (95°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like clothing, pregnancy, metabolic differences, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In Seoul, the average relative humidity in August is 75.6%.

Rainfall

In Seoul, during August, the rain falls for 14.6 days and regularly aggregates up to 364mm (14.33") of precipitation. In Seoul, during the entire year, the rain falls for 108.8 days and collects up to 1451mm (57.13") of precipitation.

Daylight

The average length of the day in August in Seoul is 13h and 35min.
On the first day of August, sunrise is at 05:35 and sunset at 19:41. On the last day of the month, sunrise is at 06:01 and sunset at 19:03 KST.

Sunshine

In Seoul, the average sunshine in August is 4.9h.

UV index

In August, the average daily maximum UV index is 9. A UV Index estimate of 8 to 10 represents a very high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 9 in August interpret into the following advice:
Take special precautions, as unprotected skin can be damaged and can burn quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.
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FAQ

What is the warmest month in Seoul?

The warmest month in Seoul is August, with an average high-temperature of 29.6°C (85.3°F) and an average low-temperature of 22.4°C (72.3°F).

What is the temperature in August in Seoul?

The average high-temperature, in August, in Seoul, is 29.6°C (85.3°F), while the average low-temperature is 22.4°C (72.3°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 35°C (95°F).

What is the average humidity in August in Seoul?

The average relative humidity in August in Seoul, South Korea, is 75.6%.

How much does it rain in Seoul in August?

In Seoul, in August, during 14.6 rainfall days, 364mm (14.33") of precipitation is typically accumulated.

What is the average length of the day in August in Seoul?

In Seoul, South Korea, the average day length in August is 13h and 35min.

When is the sunrise / sunset in August in Seoul?

On the first day of August, sunrise is at 05:35 and sunset at 19:41. On the last day of the month, sunrise is at 06:01 and sunset at 19:03 KST.

How many hours of sunshine does Seoul have in August?

In August, the average sunshine duration in Seoul, South Korea, is 4.9h.

How high is the UV index in August in Seoul?

In August, the average daily maximum UV index in Seoul is 9. A UV Index value of 8 to 10 symbolizes a very high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average UV index

Average temperature in August
Seoul, South Korea

Average temperature in August - Seoul, South Korea
  • Average high temperature in August: 29.6°C

The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (1.5°C).

  • Average low temperature in August: 22.4°C

The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (-5.9°C).

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Average humidity in August
Seoul, South Korea

Average humidity in August - Seoul, South Korea
  • Average humidity in August: 75.6%

The month with the highest relative humidity is July (78.3%).
The month with the lowest relative humidity is April (56.2%).

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Average rainfall in August
Seoul, South Korea

Average rainfall in August - Seoul, South Korea
  • Average rainfall in August: 364.2mm

The wettest month (with the highest rainfall) is July (394.7mm).
The driest month (with the least rainfall) is January (20.8mm).

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Average rainfall days in August
Seoul, South Korea

Average rainfall days in August - Seoul, South Korea
  • Average rainfall days in August: 14.6 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (5.8 days).

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Average daylight in August /
Average sunshine in August
Seoul, South Korea

Average daylight in August / Average sunshine in August - Seoul, South Korea
  • Average daylight in August: 13h and 35min

The month with the longest days is June (Average daylight: 14h and 43min).
The month with the shortest days is December (Average daylight: 9h and 37min).

  • Average sunshine in August: 4h and 54min

The month with the most sunshine is May (Average sunshine: 6h and 54min).
The month with the least sunshine is July (Average sunshine: 3h and 54min).

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Average UV index in August
Seoul, South Korea

Average UV index in August - Seoul, South Korea
  • Average UV index in August: 9

The month with the highest UV index is July (UV index 10).
The months with the lowest UV index are January and December (UV index 2).

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