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Has the climate in Hamada changed?

Hamada has warmed about 2.2°F between 1971 and 2020.

About 0.5°F per decade, measured from Hamada'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? Hamada'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
12 fewer nights
1970s
19 / yr
Recent
7 / yr
Milder winters — fewer frosts
Average temperature
+1.6°F
1970s
59.1°F
Recent
60.7°F
A steady upward drift
Hot days above 90°F
9 more days
1970s
8 / yr
Recent
17 / yr
More days of serious heat
Rainy days
17 fewer days
1970s
150 / yr
Recent
133 / yr
Drier on average

Hamada's temperature, year by year

Average temperature for each year from 1971 to 2020.

56°58°60°62°1971: 59.5°F1972: 59.8°F1973: 59.6°F1974: 58.0°F1975: 59.3°F1976: 58.0°F1977: 59.3°F1978: 60.2°F1979: 60.3°F1980: 57.7°F1981: 58.6°F1982: 59.1°F1983: 59.3°F1984: 58.5°F1985: 59.5°F1986: 58.3°F1987: 59.8°F1988: 59.0°F1989: 59.9°F1990: 61.3°F1991: 59.7°F1992: 60.0°F1993: 58.5°F1994: 60.9°F1995: 59.2°F1996: 59.0°F1997: 59.9°F1998: 61.8°F1999: 60.8°F2000: 60.4°F2001: 60.2°F2002: 60.9°F2003: 60.0°F2004: 61.4°F2006: 60.0°F2007: 61.4°F2008: 60.3°F2009: 60.2°F2010: 61.0°F2011: 60.2°F2012: 59.9°F2013: 60.9°F2014: 59.7°F2015: 60.3°F2016: 61.6°F2017: 60.6°F2018: 60.8°F2019: 61.5°F2020: 61.7°Flong-term trend197119801990200020102020
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 6 fewer freezing nights a year and about 5 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 Hamada, about 2 km from the city centre.

How we build these numbers →