Untampered Japan Meteorological Agency Data Show Tokyo Autumn Hasn’t Warmed In Decades

Charts by Kirye
Text by Pierre

The November, 2022, (untampered) mean temperature data are in for Tokyo and its Hachijojima island  – there’s been no fall warming in decades.


Here’s the latest plot of November mean temperatures for Tokyo since 1989:

Data: JMA

Over the past 33 years, the November mean temperatures in Tokyo have been declining moderately, and not warming like climate alarmists have told us.

Not only is November cooling, but so has the meteorological fall for Tokyo since 1988 – using data up to 2021:

Data: JMA

It appears winter is encroaching into fall a bit. Not what we’d expect from a “warming” crisis.


Moving over to the rural Pacific island of Hachijojima, some 275 km off the Japan mainland, we plot the latest November data going back to 1975:

Data: JMA

There’s been no warming in November on this rural island in decades!

Next we look at autumn mean temperatures at Hachijojima, for the period 1975 – 2021 (2022 not yet included):

Data: JMA

Here as well there has not been any warming in fall since 1975. Where’s all the warming?

Other than the usual natural variability, in fact nothing unusual is happening over the globe climatically – so don’t believe any of the hysterical climate crisis nonsense. There’s nothing to be afraid about climatically.

2 responses to “Untampered Japan Meteorological Agency Data Show Tokyo Autumn Hasn’t Warmed In Decades”

  1. Richard Greene

    The author owes us an explanation of what she means by “untampered” and an additional chart or two showing a “tampered” version of the data, if another version exists.

    Are people in Japan being shown adjusted versions of the raw (?) data she presented?

    Or are we just seeing three exceptions to the general claim of global warming?

    These examples only cover a tiny percentage of Earth’s surface, but they do affect a lot of people living in Japan. People are affected by their local weather and climate. No one lives in a global average climate

  2. Yonason

    Will Happer calls BS on climate extremism.

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