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Data as of 2026-10-18
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Built 2026-10-19 (19 October 2026)

Extreme rain in Japan, 15 to 19 July 2026

Extreme rain in Japan, 15 to 19 July 2026: 19 records at 11 stations, peak on 18 July 2026. Closed.

Data as of . Last revised (2026-10-18).

Key Facts

  • Extreme rain in Japan, 15 to 19 July 2026 set or tied 19 station records at 11 stations.
  • It ran from 15 July 2026 to 19 July 2026 (5 days) and its peak day was 18 July 2026.
  • Status: closed.
  • Hachinohe set an all-time record daily precipitation of 241.0 mm (9.5 in) on 16 July 2026.
  • The busiest day was 18 July 2026 with 8 records.
  • The oldest broken record in the ranked list had stood for 73 years.

Footprint

15 to 19 July 2026
Footprint of Extreme rain in Japan, 15 to 19 July 2026 The area covered by Extreme rain in Japan, 15 to 19 July 2026 is outlined, with 11 of the stations that set records marked, coloured by record type.
The area covered by Extreme rain in Japan, 15 to 19 July 2026 is outlined, with 11 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Extreme rain in Japan, 15 to 19 July 2026: stations that set records in the event
StationTypeValueDate
HachinoheRecord daily precipitation241.0 mm (9.5 in)2026-07-16
ObihiroRecord daily precipitation228.0 mm (9.0 in)2026-07-18
MutsuRecord daily precipitation266.0 mm (10.5 in)2026-07-19
HirooRecord daily precipitation138.0 mm (5.4 in)2026-07-18
OmuRecord daily precipitation97.0 mm (3.8 in)2026-07-18
UrakawaRecord daily precipitation203.0 mm (8.0 in)2026-07-18
WakkanaiRecord daily precipitation60.5 mm (2.4 in)2026-07-18
SapporoRecord daily precipitation56.5 mm (2.2 in)2026-07-16
NemuroRecord daily precipitation69.0 mm (2.7 in)2026-07-18
HaboroRecord daily precipitation50.0 mm (2.0 in)2026-07-17
AsahikawaRecord daily precipitation172.0 mm (6.8 in)2026-07-18

Records per Day

Peak day 8
Records per day during Extreme rain in Japan, 15 to 19 July 2026 Records set or tied each day from 15 July 2026 to 19 July 2026. The most in one day was 8 on 18 July 2026. 0 2 4 6 8 07-1507-1607-1707-1807-19
Records set or tied each day from 15 July 2026 to 19 July 2026. The most in one day was 8 on 18 July 2026.
Records per day during Extreme rain in Japan, 15 to 19 July 2026
DateRecords
2026-07-153
2026-07-164
2026-07-173
2026-07-188
2026-07-191

Top Records by Margin

Margin over the record replaced
Top records of Extreme rain in Japan, 15 to 19 July 2026 ranked by margin
Mutsu, 07-19102.9 mm (4.1 in)
Hachinohe, 07-1681.0 mm (3.2 in)
Hachinohe, 07-1871.8 mm (2.8 in)
Hiroo, 07-1870.5 mm (2.8 in)
Obihiro, 07-1854.0 mm (2.1 in)
Hachinohe, 07-1545.9 mm (1.8 in)
Mutsu, 07-1640.1 mm (1.6 in)
Wakkanai, 07-1838.4 mm (1.5 in)
Omu, 07-1835.2 mm (1.4 in)
Nemuro, 07-1835.0 mm (1.4 in)
Mutsu, 07-1534.0 mm (1.3 in)
Obihiro, 07-1633.5 mm (1.3 in)
Omu, 07-1733.1 mm (1.3 in)
Wakkanai, 07-1718.5 mm (0.7 in)
Obihiro, 07-1517.0 mm (0.7 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, 15 to 19 July 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 0306090120 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, 15 to 19 July 2026
Margin (mm)Years the old record stood
8144
5437
1039
7261
7156
3455
3561
1344
3816
463
1173
3525
4013
334
1927
343
1529
1715
120

Compared With Other Events

Station records per event
Station records in Extreme rain in Japan, 15 to 19 July 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, 15 to 19 July 2026 (this event)19 records

Every Record Set

19 of 19
Every record set or tied during Extreme rain in Japan, 15 to 19 July 2026, in date order
DateStationRecordValueMarginYears stoodSignificance
2026-07-15HachinoheRecord daily precipitation83.0 mm (3.3 in)45.9 mm (1.8 in)340 of 100 (Notable)
2026-07-15MutsuRecord daily precipitation83.0 mm (3.3 in)34.0 mm (1.3 in)328 of 100 (Routine)
2026-07-15ObihiroRecord daily precipitation46.5 mm (1.8 in)17.0 mm (0.7 in)1526 of 100 (Routine)
2026-07-16HachinoheRecord daily precipitation241.0 mm (9.5 in)81.0 mm (3.2 in)4480 of 100 (Exceptional)
2026-07-16ObihiroRecord daily precipitation67.5 mm (2.7 in)33.5 mm (1.3 in)5553 of 100 (Notable)
2026-07-16SapporoRecord daily precipitation56.5 mm (2.2 in)11.2 mm (0.4 in)7338 of 100 (Notable)
2026-07-16MutsuRecord daily precipitation79.0 mm (3.1 in)40.1 mm (1.6 in)1336 of 100 (Notable)
2026-07-17OmuRecord daily precipitation59.0 mm (2.3 in)33.1 mm (1.3 in)433 of 100 (Routine)
2026-07-17WakkanaiRecord daily precipitation35.5 mm (1.4 in)18.5 mm (0.7 in)2729 of 100 (Routine)
2026-07-17HaboroRecord daily precipitation50.0 mm (2.0 in)14.9 mm (0.6 in)2926 of 100 (Routine)
2026-07-18ObihiroRecord daily precipitation228.0 mm (9.0 in)54.0 mm (2.1 in)3778 of 100 (Major)
2026-07-18HachinoheRecord daily precipitation97.5 mm (3.8 in)71.8 mm (2.8 in)6165 of 100 (Major)
2026-07-18HirooRecord daily precipitation138.0 mm (5.4 in)70.5 mm (2.8 in)5657 of 100 (Notable)
2026-07-18OmuRecord daily precipitation97.0 mm (3.8 in)35.2 mm (1.4 in)6152 of 100 (Notable)
2026-07-18UrakawaRecord daily precipitation203.0 mm (8.0 in)13.0 mm (0.5 in)4447 of 100 (Notable)
2026-07-18WakkanaiRecord daily precipitation60.5 mm (2.4 in)38.4 mm (1.5 in)1641 of 100 (Notable)
2026-07-18NemuroRecord daily precipitation69.0 mm (2.7 in)35.0 mm (1.4 in)2537 of 100 (Notable)
2026-07-18AsahikawaRecord daily precipitation172.0 mm (6.8 in)12.0 mm (0.5 in)024 of 100 (Routine)
2026-07-19MutsuRecord daily precipitation266.0 mm (10.5 in)102.9 mm (4.1 in)969 of 100 (Major)

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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 2026-10-18. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.