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Weather extremes
How extreme does Iwaki's weather get?
The hottest, coldest, wettest and snowiest days Iwaki has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.
The four kinds of extreme
The hottest, coldest, wettest and snowiest single days Iwaki has recorded — each shown against what a normal day that time of year looks like.
That is about 18°F hotter than a normal August afternoon in Iwaki (typical high near 82°F).
The three most extreme on record
About 11°F colder than a normal February night in Iwaki (typical low near 31°F).
The three most extreme on record
About 91% of a typical October's rain in a single day (Iwaki averages roughly 7.8 in across the month).
The three most extreme on record
How hot and cold it gets, month by month
The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.
Iwaki's record heat sits well above even a hot day for the season — August's 100°F is about 18°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.
In plain terms
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Onahama, about 12 km from the city centre.