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Has the climate in Ena changed?

Ena has warmed about 2.1°F between 1971 and 2020.

About 0.4°F per decade, measured from Ena'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? Ena's climate has warmed more slowly than most other cities in Japan.

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
55 fewer nights
1970s
112 / yr
Recent
57 / yr
Milder winters — fewer frosts
Average temperature
+1.7°F
1970s
54.2°F
Recent
55.9°F
A steady upward drift
Hot days above 90°F
20 more days
1970s
14 / yr
Recent
34 / yr
More days of serious heat
Rainy days
8 fewer days
1970s
130 / yr
Recent
122 / yr
Drier on average

Ena's temperature, year by year

Average temperature for each year from 1971 to 2020.

51°53°55°57°59°1971: 54.8°F1972: 55.5°F1973: 54.6°F1974: 53.6°F1975: 54.6°F1976: 53.4°F1977: 54.9°F1978: 54.7°F1979: 55.6°F1980: 53.7°F1981: 52.8°F1982: 54.2°F1983: 53.9°F1984: 52.7°F1985: 54.9°F1986: 53.7°F1987: 55.5°F1988: 54.1°F1989: 55.3°F1990: 56.4°F1991: 55.6°F1992: 54.8°F1993: 53.9°F1994: 56.3°F1995: 54.2°F1996: 54.2°F1997: 55.2°F1998: 57.0°F1999: 56.0°F2000: 55.5°F2001: 52.3°F2002: 55.9°F2003: 55.0°F2004: 56.2°F2006: 55.6°F2007: 56.0°F2008: 55.5°F2009: 55.7°F2010: 56.3°F2011: 55.1°F2012: 54.7°F2013: 55.6°F2014: 54.8°F2015: 56.3°F2016: 57.0°F2017: 54.9°F2018: 56.8°F2019: 56.6°F2020: 57.2°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 33 fewer freezing nights a year and about 12 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 Ena, about 2 km from the city centre.

How we build these numbers →