Amami has warmed about 1.2°F between 1971 and 2020.
About 0.2°F per decade, measured from Amami'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? Amami'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
about the same
1970s
0 / yr
→
Recent
0 / yr
Winters about as cold as before
Average temperature
+0.8°F
1970s
70.6°F
→
Recent
71.4°F
A steady upward drift
Hot days above 90°F
7 more days
1970s
38 / yr
→
Recent
45 / yr
More days of serious heat
Rainy days
9 fewer days
1970s
192 / yr
→
Recent
183 / yr
Drier on average
Amami's temperature, year by year
Average temperature for each year from 1971 to 2020.
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 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 Kasari, about 22 km from the city centre.