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Weather extremes

How extreme does Kiyosu's weather get?

The hottest, coldest, wettest and snowiest days Kiyosu 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 Nagoya station 9 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 Kiyosu has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
104°F Jul 18, 2018

That is about 16°F hotter than a normal July afternoon in Kiyosu (typical high near 88°F).

The three most extreme on record

1 104°F Jul 18, 2018
2 104°F Jul 23, 2018
3 102°F Aug 5, 1994
❄️ Coldest night
19°F Feb 3, 1999

About 15°F colder than a normal February night in Kiyosu (typical low near 34°F).

The three most extreme on record

1 19°F Feb 3, 1999
2 19°F Feb 16, 2000
3 21°F Feb 2, 1996
🌧️ Most rain in one day
10.08 in Jul 1, 1993

The three most extreme on record

1 10.08 in Jul 1, 1993
2 10.08 in Aug 16, 1993
3 10.08 in Aug 26, 1993

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.

-10°10°30°50°70°90°110°130° all-time high 104°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Kiyosu's record heat sits well above even a hot day for the season — July's 104°F is about 16°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, Kiyosu's warmest days reach the low 90s°F and its coldest nights drop to the low 30s°F. But across the record it has gone as high as 104°F and as low as 19°F. A single day has delivered over 10 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 Aisai, about 12 km from the city centre.

How we build these numbers →