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The average wind speed is 8 kph (5 mph). September is generally a warm month. The average temperature is of 21.6 °C (71 °F), with a minimum of 17.2 °C (62.9 °F) and a maximum of 26.1 °C (79 °F). On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 12 °C (53.5 °F).
The hot season lasts for 4.0 months, from May 24 to September 23, with an average daily high temperature above 75°F. The hottest month of the year in Seoul is August, with an average high of 84°F and low of 73°F. The cold season lasts for 3.0 months, from November 30 to February 28, with an average daily high temperature below 44°F.
Averages are for Seoul / Kimp'O International Airport, which is 10 miles from Seoul. Based on weather reports collected during 1992–2021. Showing: All Year January February March April May June July August September October November December
The average annual temperature is 12.8°C. The coldest month is January with -1.9°C, the hottest month is August with 26.1°C, and the annual temperature difference is very large with 28.0°C. The average annual precipitation is 1417.9mm, with the lowest precipitation in January at 16.8mm and the highest in July at 414.4mm in July.
Weather in November. The last month of the autumn, November, is also a fresh month in Seoul, South Korea, with an average temperature ranging between max 11.6°C (52.9°F) and min 3.2°C (37.8°F). In Seoul, the average high-temperature in November drops, from a comfortable 19.8°C (67.6°F) in October, to a fresh 11.6°C (52.9°F).
- What part of the year is the coldest in Seoul?The coldest period in Seoul is January , when temperatures fluctuate between an average high of 1.5°C and a low of -5.9°C .
- What is the driest month in Seoul?January is the month with the least rainfall . Rain falls for 6.5 days and accumulates 21mm of precipitation .
- How many days does it rain in Seoul?In Seoul, South Korea, during the entire year, the rain falls for 108.8 days and collects up to 1451mm of precipitation .
- When is the lowest UV index in Seoul?January and December , with an average maximum UV index of 2 , are months with the lowest UV index .
- What is the least humid month in Seoul?With an average relative humidity of 56.2% , April is the least humid month in Seoul.
- What month has the most sunshine in Seoul?With an average of 6.9h of sunshine , May has the most sunshine of the year.
- When are the longest days in Seoul?June has the longest days of the year in Seoul, South Korea, with an average of 14h and 42min of daylight .
- What is the most humid month in Seoul?The most humid month is July , with an average relative humidity of 78.3% .
- What is the wettest month in Seoul?July is the month with the most rainfall in Seoul. Rain falls for 16.3 days and accumulates 395mm of precipitation .
Seoul, South Korea Weather Averages. Based on annual weather averages for Seoul, the best month to go for holiday is May and September. The temperature hovers around 18°c. The table below displays max and min temperature and rain data for the whole year as an average taken from last 12+ years of historical data for Seoul.
From May to September you will see the most rain, with rainfall amounts rising in July and August to 300 mm and sometimes more than 400 mm per month. In this period there is also the possibility that Seoul gets hit by a hurricane. The hurricane season runs from June to December in this region. During the months of May and October you are most ...
