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Has the climate in Tsuruga changed?

Tsuruga has warmed about 2.4°F between 1971 and 2020.

About 0.5°F per decade, measured from Tsuruga's official daily weather records, 1971–2020. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Tsuruga's warming is broadly in line with other cities in Japan — 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.

Freezing nights
22 fewer nights
1970s
35 / yr
Recent
13 / yr
Milder winters — fewer frosts
Average temperature
+1.8°F
1970s
58.8°F
Recent
60.5°F
A steady upward drift
Hot days above 90°F
12 more days
1970s
23 / yr
Recent
35 / yr
More days of serious heat
Rainy days
16 fewer days
1970s
189 / yr
Recent
173 / yr
Drier on average

Tsuruga's temperature, year by year

Average temperature for each year from 1971 to 2020.

56°58°60°62°1971: 58.5°F1972: 59.5°F1973: 59.3°F1974: 58.1°F1975: 59.1°F1976: 57.9°F1977: 59.0°F1978: 59.9°F1979: 60.3°F1980: 57.7°F1981: 57.4°F1982: 59.0°F1983: 58.8°F1984: 57.8°F1985: 59.1°F1986: 57.8°F1987: 59.9°F1988: 58.3°F1989: 59.8°F1992: 59.4°F1993: 58.3°F1994: 60.8°F1995: 58.6°F1996: 58.7°F1997: 59.8°F1998: 61.4°F1999: 60.6°F2000: 60.5°F2001: 57.4°F2002: 60.4°F2003: 59.9°F2004: 61.1°F2006: 60.0°F2007: 60.8°F2008: 60.2°F2009: 60.2°F2010: 60.7°F2011: 59.9°F2012: 59.7°F2013: 60.3°F2014: 59.7°F2015: 60.7°F2016: 61.6°F2017: 59.8°F2018: 61.1°F2019: 61.5°F2020: 61.9°Flong-term trend19711980200020102020
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.

In day-to-day terms, that long-term shift shows up as about 13 fewer freezing nights a year and about 8 more days above 90°F compared with the 1970s.

Methodology & sources

Temperature — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Tsuruga, inside the city.

How we build these numbers →