Climate Yearbook

Historical weather in Seoul, South Korea

Seoul weather history for 2023-2025, with daily temperatures, precipitation, monthly summaries, and records from Open-Meteo archive data.

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Weather summary

Across 2023-2025, Seoul averaged 17.5 C for daily highs and 8.5 C for daily lows across 1096 daily observations.

The warmest month was July 2025, with an average high of 32.3 C, while January 2023 had the lowest average low at -7.8 C.

The wettest month was July 2024, totaling 522.2 mm of precipitation.

The hottest day reached 38.5 C on July 29, 2025; the coldest night fell to -18.5 C on January 25, 2023.

Monthly summary table

YearMonthAvg low CAvg high CRain and snow mmDays
2023January-7.81.936.331
2023February-4.45.82.628
2023March1.214.118.131
2023April6.617.7103.730
2023May12.222.9166.831
2023June17.625.9220.330
2023July22.128.8417.931
2023August22.529.3311.031
2023September18.625.9144.930
2023October9.318.925.031
2023November0.99.6104.330
2023December-4.34.281.231
2024January-6.12.617.331
2024February-2.46.864.229
2024March-0.510.651.131
2024April8.420.540.130
2024May11.522.2127.131
2024June17.529.1109.930
2024July22.628.8522.231
2024August24.031.2181.631
2024September20.127.6210.030
2024October10.219.575.531
2024November3.312.642.230
2024December-4.32.92.731
2025January-5.32.019.331
2025February-6.52.24.528
2025March1.111.644.831
2025April6.217.4103.430
2025May12.221.6102.931
2025June19.328.1100.630
2025July24.432.3234.531
2025August23.930.9204.731
2025September19.226.2298.130
2025October12.219.4158.831
2025November3.112.316.330
2025December-4.33.445.931

Daily weather records

RecordDateValue
Hottest dayJuly 29, 202538.5 C
Coldest nightJanuary 25, 2023-18.5 C
Wettest dayJuly 17, 202489.6 mm

Weather data source: Open-Meteo Archive API. City metadata source: GeoNames cities15000.