October weather forecast
Seoul, South Korea

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

Weather in October

October is famous for offering the best of Seoul’s autumn weather, with mild temperatures and low rainfall. The city boasts vibrant and colorful foliage, offering beautiful panoramas, especially the panoramic view from Namsan Tower. Sunglasses become staples in accessories due to the longer sunshine hours compared to September. As the winter chill starts seeping in by November, October turns the foliage into a mosaic of colors.

Temperature

A shift in the average high-temperature occurs in October, reducing from a warm 25.8°C (78.4°F) in September to a refreshing 19.8°C (67.6°F). Seoul, in October, witnesses an average low-temperature of 10.3°C (50.5°F).

Humidity

In Seoul, the average relative humidity in October is 64%.

Rainfall

In Seoul, in October, during 6.3 rainfall days, 52mm (2.05") of precipitation is typically accumulated. Throughout the year, in Seoul, South Korea, there are 108.8 rainfall days, and 1451mm (57.13") of precipitation is accumulated.

Daylight

The average length of the day in October is 11h and 14min.
On the first day of October, sunrise is at 06:27 and sunset at 18:15. On the last day of the month, sunrise is at 06:56 and sunset at 17:35 KST.

Sunshine

The average sunshine in October is 6.4h.

UV index

In October, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: In October, a daily maximum UV index of 4 leads to the following instructions:
Adopt protective measures - It is advised to guard against sun damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.

Frequently asked questions

What is the usual temperature for Seoul in October?

The high-temperature, in October, in Seoul, records 19.8°C (67.6°F), while the low-temperature is 10.3°C (50.5°F). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in August is computed to be 35°C (95°F).

What is the average humidity in October?

In Seoul, the average relative humidity in October is 64%.

How much does it rain in October?

In Seoul, in October, it is raining for 6.3 days, with typically 52mm (2.05") of accumulated precipitation.

What is the average length of the day in October?

The average day length in October is 11h and 14min.

When is the sunrise / sunset in October?

On the first day of October, sunrise is at 06:27 and sunset at 18:15. On the last day of the month, sunrise is at 06:56 and sunset at 17:35 KST.

How long on average sun shines in October?

The average sunshine duration in October is 6.4h.

What is the UV index intensity in October?

The average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in October
Seoul, South Korea

Average temperature in October - Seoul, South Korea
  • Average high temperature in October: 19.8°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 October: 10.3°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).

Average humidity in October
Seoul, South Korea

Average humidity in October - Seoul, South Korea
  • Average humidity in October: 64%

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

Average rainfall in October
Seoul, South Korea

Average rainfall in October - Seoul, South Korea
  • Average rainfall in October: 51.8mm

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

Average rainfall days in October
Seoul, South Korea

Average rainfall days in October - Seoul, South Korea
  • Average rainfall days in October: 6.3 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).

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

Average daylight in October / Average sunshine in October - Seoul, South Korea
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in October: 6h and 2min

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).

Average UV index in October
Seoul, South Korea

Average UV index in October - Seoul, South Korea
  • Average UV index in October: 4

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).

Seoul, South Korea

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