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Has the climate in Hongseong changed?

Hongseong has warmed about 2.2°F between 1991 and 2024.

About 0.6°F per decade, measured from Hongseong's official daily weather records, 1991–2024. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Hongseong's warming is broadly in line with other cities in South Korea — neither unusually fast nor unusually slow.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Average temperature
+1.5°F
1970s
53.6°F
Recent
55.2°F
A steady upward drift

Hongseong's temperature, year by year

Average temperature for each year from 1991 to 2024.

51°53°55°57°59°1991: 53.2°F1992: 53.5°F1993: 52.7°F1994: 55.0°F1995: 53.3°F1996: 53.0°F1997: 54.0°F1998: 55.2°F1999: 54.3°F2000: 52.3°F2001: 53.3°F2002: 53.4°F2003: 53.7°F2004: 54.7°F2005: 52.8°F2006: 54.0°F2007: 54.4°F2008: 53.7°F2009: 54.2°F2010: 53.1°F2011: 53.0°F2012: 52.8°F2013: 53.3°F2014: 54.3°F2015: 55.0°F2016: 55.3°F2017: 54.3°F2018: 54.3°F2019: 54.9°F2020: 54.7°F2021: 55.8°F2022: 54.3°F2023: 56.1°F2024: 57.7°Flong-term trend19912000201020202024
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

Methodology & sources

Temperature — 1991–2020 normals computed from 30 years of daily observations at Seosan, a weather station, about 24 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →