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Built 2026-11-13 (13 November 2026)

Extreme rain in Japan, 29 to 31 October 2026

Extreme rain in Japan, 29 to 31 October 2026: 19 records at 17 stations, peak on 30 October 2026. Closed.

Data as of . Last revised (2026-11-12).

Key Facts

  • Extreme rain in Japan, 29 to 31 October 2026 set or tied 19 station records at 17 stations.
  • It ran from 29 October 2026 to 31 October 2026 (3 days) and its peak day was 30 October 2026.
  • Status: closed.
  • Hiroo set a monthly record daily precipitation of 376.5 mm (14.8 in) on 31 October 2026 (provisional).
  • The busiest day was 30 October 2026 with 11 records.
  • The oldest broken record in the ranked list had stood for 72 years.

Footprint

29 to 31 October 2026
Footprint of Extreme rain in Japan, 29 to 31 October 2026 The area covered by Extreme rain in Japan, 29 to 31 October 2026 is outlined, with 17 of the stations that set records marked, coloured by record type.
The area covered by Extreme rain in Japan, 29 to 31 October 2026 is outlined, with 17 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Extreme rain in Japan, 29 to 31 October 2026: stations that set records in the event
StationTypeValueDate
HirooRecord daily precipitation376.5 mm (14.8 in)2026-10-31
NemuroRecord daily precipitation142.0 mm (5.6 in)2026-10-31
RumoiRecord daily precipitation72.0 mm (2.8 in)2026-10-30
KitamiesashiRecord daily precipitation184.0 mm (7.2 in)2026-10-30
FukauraRecord daily precipitation91.0 mm (3.6 in)2026-10-30
AkitaRecord daily precipitation208.0 mm (8.2 in)2026-10-30
IwamizawaRecord daily precipitation88.5 mm (3.5 in)2026-10-30
ObihiroRecord daily precipitation90.5 mm (3.6 in)2026-10-30
SendaiRecord daily precipitation104.0 mm (4.1 in)2026-10-30
EsashiRecord daily precipitation51.0 mm (2.0 in)2026-10-30
SuttsuRecord daily precipitation43.5 mm (1.7 in)2026-10-31
AomoriRecord daily precipitation47.0 mm (1.9 in)2026-10-29
IshinomakiRecord daily precipitation110.0 mm (4.3 in)2026-10-30
MoriokaRecord daily precipitation47.5 mm (1.9 in)2026-10-29
SapporoRecord daily precipitation44.0 mm (1.7 in)2026-10-31
KutchanRecord daily precipitation48.5 mm (1.9 in)2026-10-31
WakkanaiRecord daily precipitation23.0 mm (0.9 in)2026-10-30

Records per Day

Peak day 11
Records per day during Extreme rain in Japan, 29 to 31 October 2026 Records set or tied each day from 29 October 2026 to 31 October 2026. The most in one day was 11 on 30 October 2026. 0 3 6 9 12 10-2910-3010-31
Records set or tied each day from 29 October 2026 to 31 October 2026. The most in one day was 11 on 30 October 2026.
Records per day during Extreme rain in Japan, 29 to 31 October 2026
DateRecords
2026-10-293
2026-10-3011
2026-10-315

Top Records by Margin

Margin over the record replaced
Top records of Extreme rain in Japan, 29 to 31 October 2026 ranked by margin
Hiroo, 10-31164.5 mm (6.5 in)
Akita, 10-30164.1 mm (6.5 in)
Kitamiesashi, 10-3080.1 mm (3.2 in)
Nemuro, 10-3173.9 mm (2.9 in)
Obihiro, 10-3063.1 mm (2.5 in)
Fukaura, 10-3057.0 mm (2.2 in)
Iwamizawa, 10-3047.6 mm (1.9 in)
Sendai, 10-3038.5 mm (1.5 in)
Rumoi, 10-3034.0 mm (1.3 in)
Suttsu, 10-3120.5 mm (0.8 in)
Ishinomaki, 10-3020.0 mm (0.8 in)
Aomori, 10-2915.5 mm (0.6 in)
Esashi, 10-3015.1 mm (0.6 in)
Akita, 10-2914.5 mm (0.6 in)
Kutchan, 10-3114.5 mm (0.6 in)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

Margin against age of the broken record in Extreme rain in Japan, 29 to 31 October 2026 19 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right. 0 20 40 60 80 050100150200 Margin (mm) Years the old record stood
19 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right.
Margin against age of the broken record in Extreme rain in Japan, 29 to 31 October 2026
Margin (mm)Years the old record stood
16547
7472
3456
8011
5732
16428
488
638
3955
2149
1568
1651
1556
2055
1341
1248
172
555
158

Compared With Other Events

Station records per event
Station records in Extreme rain in Japan, 29 to 31 October 2026 compared with similar events
Extreme rain in United States and Mexico, 23 February to 15 March 20192,223 records
Extreme rain in United States, 3 to 19 January 20242,133 records
Extreme rain in Australia, 7 to 26 March 20212,099 records
Extreme rain in United States and Mexico, 29 September to 19 October 20181,970 records
Extreme rain in United States, 19 December 2022 to 13 January 20231,941 records
Extreme rain in Japan, 29 to 31 October 2026 (this event)19 records

Every Record Set

19 of 19
Every record set or tied during Extreme rain in Japan, 29 to 31 October 2026, in date order
DateStationRecordValueMarginYears stoodSignificance
2026-10-29AomoriRecord daily precipitation (provisional)47.0 mm (1.9 in)15.5 mm (0.6 in)5136 of 100 (Notable)
2026-10-29AkitaRecord daily precipitation (provisional)61.5 mm (2.4 in)14.5 mm (0.6 in)5635 of 100 (Notable)
2026-10-29MoriokaRecord daily precipitation (provisional)47.5 mm (1.9 in)11.5 mm (0.5 in)4830 of 100 (Routine)
2026-10-30RumoiRecord daily precipitation (provisional)72.0 mm (2.8 in)34.0 mm (1.3 in)5663 of 100 (Major)
2026-10-30KitamiesashiRecord daily precipitation (provisional)184.0 mm (7.2 in)80.1 mm (3.2 in)1160 of 100 (Major)
2026-10-30FukauraRecord daily precipitation (provisional)91.0 mm (3.6 in)57.0 mm (2.2 in)3256 of 100 (Notable)
2026-10-30AkitaRecord daily precipitation (provisional)208.0 mm (8.2 in)164.1 mm (6.5 in)2855 of 100 (Notable)
2026-10-30IwamizawaRecord daily precipitation (provisional)88.5 mm (3.5 in)47.6 mm (1.9 in)849 of 100 (Notable)
2026-10-30ObihiroRecord daily precipitation (provisional)90.5 mm (3.6 in)63.1 mm (2.5 in)849 of 100 (Notable)
2026-10-30SendaiRecord daily precipitation (provisional)104.0 mm (4.1 in)38.5 mm (1.5 in)5544 of 100 (Notable)
2026-10-30EsashiRecord daily precipitation (provisional)51.0 mm (2.0 in)15.1 mm (0.6 in)6841 of 100 (Notable)
2026-10-30IshinomakiRecord daily precipitation (provisional)110.0 mm (4.3 in)20.0 mm (0.8 in)5533 of 100 (Routine)
2026-10-30AomoriRecord daily precipitation (provisional)33.0 mm (1.3 in)13.0 mm (0.5 in)4130 of 100 (Routine)
2026-10-30WakkanaiRecord daily precipitation (provisional)23.0 mm (0.9 in)0.9 mm (0.04 in)7220 of 100 (Routine)
2026-10-31HirooRecord daily precipitation (provisional)376.5 mm (14.8 in)164.5 mm (6.5 in)4770 of 100 (Major)
2026-10-31NemuroRecord daily precipitation (provisional)142.0 mm (5.6 in)73.9 mm (2.9 in)7268 of 100 (Major)
2026-10-31SuttsuRecord daily precipitation (provisional)43.5 mm (1.7 in)20.5 mm (0.8 in)4941 of 100 (Notable)
2026-10-31SapporoRecord daily precipitation (provisional)44.0 mm (1.7 in)5.0 mm (0.20 in)5527 of 100 (Routine)
2026-10-31KutchanRecord daily precipitation (provisional)48.5 mm (1.9 in)14.5 mm (0.6 in)822 of 100 (Routine)

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Download the Data

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-11-12. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.