How extreme does Tateyama's weather get?

The hottest, coldest, wettest and snowiest days Tateyama has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 34 years of daily weather observations (1991–present), from the Katsuura station 45 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Tateyama has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

94°F Sep 3, 2000

That is about 14°F hotter than a normal September afternoon in Tateyama (typical high near 80°F).

The three most extreme on record

1 94°F Sep 3, 2000

2 94°F Jul 17, 2023

3 94°F Jul 21, 2004

❄️ Coldest night

26°F Feb 3, 1996

About 11°F colder than a normal February night in Tateyama (typical low near 37°F).

The three most extreme on record

1 26°F Feb 3, 1996

2 26°F Jan 24, 1998

3 26°F Jan 25, 1998

🌧️ Most rain in one day

12.83 in Sep 22, 1996

More rain in a single day than Tateyama usually gets in the whole month of September (typical September total about 9.7 in).

The three most extreme on record

1 12.83 in Sep 22, 1996

2 12.76 in Jul 15, 2007

3 11.57 in Oct 9, 2004

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.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

Tateyama's record heat sits well above even a hot day for the season — September's 94°F is about 14°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

In a normal year, Tateyama's warmest days reach the mid-80s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 94°F and as low as 26°F. A single day has delivered over 13 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Tateyama, inside the city.

How we build these numbers →

← Tateyama city detail