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Weather extremes

How extreme does Urayasu's weather get?

The hottest, coldest, wettest and snowiest days Urayasu 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 Tokyo Heliport station 5 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 Urayasu has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
100°F Jul 21, 2004

That is about 18°F hotter than a normal July afternoon in Urayasu (typical high near 83°F).

The three most extreme on record

1 100°F Jul 21, 2004
2 100°F Jul 30, 2024
3 99°F Aug 10, 2013
❄️ Coldest night
28°F Jan 14, 2001

About 12°F colder than a normal January night in Urayasu (typical low near 40°F).

The three most extreme on record

1 28°F Jan 14, 2001
2 30°F Jan 22, 1997
3 30°F Jan 15, 2001
🌧️ Most rain in one day
0.08 in Dec 28, 2001

More rain in a single day than Urayasu usually gets in the whole month of December (typical December total about 0.0 in).

Top recorded days

1 0.08 in Dec 28, 2001

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°30°50°70°90°110°130° all-time high 100°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Urayasu's record heat sits well above even a hot day for the season — July'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

In a normal year, Urayasu's warmest days reach the mid-80s°F and its coldest nights drop to the low 40s°F. But across the record it has gone as high as 100°F and as low as 28°F. A single day has delivered over 0 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 Edogawa-rinkai, about 4 km from the city centre.

How we build these numbers →