| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Number of Wet Days (probability of rain on a day)
|Average Sunlight per day
|Average Daylight per day
|Sunny (Cloudy) Daylight Hours
|Sun altitude at solar noon on the 21st day.
- The average temperature in Seoul in September is warm at 20.6 °C (69.08 °F).
- Afternoons can be hot with average high temperatures reaching 26 °C (78.8 °F).
- Overnight temperatures are generally very mild with an average low of 16 °C (60.8 °F).
- The range/ variation of diurnal mean temperatures in September is 10 °C (18 °F).
- The weather in September is slightly wettish with sporadic rain. Around 168.7mm (6.6in) of liquid is released during an average of 7 days.
- The skies in Seoul are fine having on average a detectable 6:40 of bright solar radiation daily.
- The shortest day is 11:47 long and the longest day is 12:58 long with an average length of 12:22.
- There are approximately 5:32 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
- It is sunny approximately 54.6% of daylight hours and cloudy 45.4% of daylight hours.
Check the distance to and compare the Seoul September averages with somewhere beginning with:
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Weather Trend Graph for September in Seoul, South Korea
Navigate to September Weather in Locations Surrounding Seoul:
- Kimchaek, South Korea - 394.4 kms (245.1 miles) NNE
- Wonsan, South Korea - 183.8 kms (114.2 miles) NNE
- Chunchon, North Korea - 77.1 kms (47.9 miles) ENE
- Kangnung, North Korea - 170.6 kms (106 miles) E
- Ullungdo Island, North Korea - 346.9 kms (215.6 miles) E
- Taejon, North Korea - 138.2 kms (85.9 miles) SSE
- Chupungnyong, North Korea - 175.9 kms (109.3 miles) SSE
- Pohang, North Korea - 274.7 kms (170.7 miles) SE
- Busan, South Korea - 330.9 kms (205.6 miles) SE
- Yosu/ Yeosu, North Korea - 322.5 kms (200.4 miles) SSE
- Izuhara, Japan - 429.8 kms (267.1 miles) SSE