Weather on September 18 in Seoul

Historical weather data for September 18 in Seoul, South Korea

Avg High26°C (79°F)
Avg Low18°C (64°F)
Warmest201026°C
Coldest198018°C

Based on 54 years of data from SEOUL CITY

About This Date

September 18th in Seoul, South Korea typically brings pleasant fall weather, with average highs around 26°C and lows near 18°C. Over 54 years of records, the warmest September 18th was in 2010 (26°C average), while the coldest was 1980 (18°C) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 22% of September 18th dates historically, with the wettest September 18th recording 7.01" of rain.

Planning for September 18th in Seoul? Great weather for outdoor activities.

Year by Year History

YearHighLowPrecip
202526°C (78°F)19°C (67°F)--
2024--26°C (79°F)--
2023--21°C (70°F)0"
2022--23°C (73°F)--
2021--19°C (66°F)--
2020--18°C (65°F)0"
2019--16°C (60°F)--
2017--17°C (62°F)--
201628°C (83°F)----
201529°C (85°F)16°C (61°F)--
201427°C (81°F)----
201331°C (88°F)18°C (64°F)--
201224°C (76°F)18°C (64°F)--
201127°C (80°F)--0.05"
201031°C (87°F)22°C (71°F)--
200928°C (83°F)17°C (63°F)--
200832°C (89°F)----
2007--18°C (65°F)2.39"
2006--17°C (62°F)0.2"
200527°C (81°F)--0.25"
200424°C (76°F)--1.09"
200323°C (74°F)--7.01"
200227°C (81°F)16°C (61°F)--
200128°C (83°F)--0.03"
200024°C (75°F)--0"
199923°C (73°F)19°C (67°F)2.21"
199829°C (84°F)18°C (64°F)--
199724°C (75°F)--0"
199627°C (81°F)18°C (64°F)--
199525°C (77°F)13°C (56°F)--
199425°C (77°F)--0.41"
199326°C (79°F)--0.41"
199226°C (79°F)----
1991--18°C (64°F)--
199022°C (71°F)----
198927°C (80°F)16°C (61°F)--
198829°C (84°F)18°C (65°F)--
198724°C (76°F)12°C (54°F)--
198621°C (70°F)----
198522°C (72°F)--0.1"
198427°C (81°F)17°C (63°F)--
198329°C (84°F)----
198227°C (80°F)----
198126°C (79°F)----
198023°C (73°F)13°C (55°F)0"
197927°C (81°F)15°C (59°F)--
197822°C (72°F)----
197726°C (79°F)--0"
197625°C (77°F)14°C (57°F)0"
197528°C (82°F)20°C (68°F)--
197422°C (72°F)--0"
197326°C (79°F)19°C (66°F)0.03"
197224°C (75°F)17°C (63°F)0"
197126°C (79°F)16°C (60°F)0"

Popular Dates in Seoul

Browse by Country

Explore More Dates

See historical weather for other dates in Seoul

Back to Seoul
September 18 Weather in Seoul, South Korea - Historical Data