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Weather extremes
How extreme does Tomakomai's weather get?
The hottest, coldest, wettest and snowiest days Tomakomai 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 Tomakomai has recorded — each shown against what a normal day that time of year looks like.
That is about 21°F hotter than a normal August afternoon in Tomakomai (typical high near 75°F).
The three most extreme on record
About 18°F colder than a normal January night in Tomakomai (typical low near 16°F).
The three most extreme on record
About 87% of a typical September's rain in a single day (Tomakomai averages roughly 6.9 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.
Tomakomai's record heat sits well above even a hot day for the season — August's 96°F is about 21°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 Tomakomai, about 5 km from the city centre.