Built 2026-10-16 (16 October 2026)

Tajima Weather Records (JA000047747)

Record envelope, standing records and threshold days for Tajima (JA000047747), Japan, with 76 years of record.

Key Facts for Tajima

  • Tajima (JA000047747) is a weather station in Japan at 35.50 latitude and 134.78 longitude, 183 m (600 ft) above sea level.
  • The station reports from 1951 to 2026, 76 years of record.
  • 1,464 records set at Tajima still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Tajima set a monthly record daily precipitation of 158.0 mm (6.2 in) on 4 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Japan, 35.50 latitude, 134.78 longitude.
  • Elevation: 183 m (600 ft).
  • Period of record: 1951 to 2026, 76 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

23 days at or beyond a record
Daily record high and record low at Tajima, with 2026 drawn through them The band shows the record high and record low for each calendar day at Tajima. The lines show the 2026 daily maximum and minimum. 23 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Tajima. The lines show the 2026 daily maximum and minimum. 23 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Tajima, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan21.4 C (70.5 F)-12.1 C (10.2 F)15.4 C (59.7 F)-3.3 C (26.1 F)
Feb21.9 C (71.4 F)-11.1 C (12.0 F)20.7 C (69.3 F)-3.5 C (25.7 F)
Mar26.2 C (79.2 F)-6.0 C (21.2 F)18.5 C (65.3 F)-1.6 C (29.1 F)
Apr30.9 C (87.6 F)-3.2 C (26.2 F)27.2 C (81.0 F)3.8 C (38.8 F)
May34.6 C (94.3 F)1.1 C (34.0 F)34.6 C (94.3 F)7.0 C (44.6 F)
Jun36.6 C (97.9 F)7.5 C (45.5 F)32.9 C (91.2 F)13.8 C (56.8 F)
Jul38.6 C (101.5 F)13.0 C (55.4 F)36.4 C (97.5 F)18.6 C (65.5 F)
Aug38.8 C (101.8 F)15.2 C (59.4 F)38.8 C (101.8 F)22.1 C (71.8 F)
Sep36.2 C (97.2 F)7.9 C (46.2 F)36.5 C (97.7 F)16.6 C (61.9 F)
Oct30.6 C (87.1 F)2.0 C (35.6 F)29.1 C (84.4 F)11.9 C (53.4 F)
Nov26.3 C (79.3 F)-2.2 C (28.0 F)n/an/a
Dec22.1 C (71.8 F)-7.7 C (18.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Tajima by the year they were set 1,464 records at Tajima still stand. 2025 holds the most, with 122. 0501001501963: 561964: 381965: 501966: 521967: 491968: 471969: 621970: 521971: 441972: 471973: 501974: 291975: 351976: 571977: 581978: 501979: 511980: 571981: 541982: 421983: 421984: 501985: 471986: 321987: 571988: 321989: 502025: 1222026: 521963196619691972197519781981198419872025
1,464 records at Tajima still stand. 2025 holds the most, with 122.
Standing records at Tajima by the year they were set
Year setStanding records
196356
196438
196550
196652
196749
196847
196962
197052
197144
197247
197350
197429
197535
197657
197758
197850
197951
198057
198154
198242
198342
198450
198547
198632
198757
198832
198950
2025122
202652

Wettest Day of Each Month

Sep: 213.3 mm (8.4 in)
Record daily precipitation for each month at Tajima The wettest day on record for each calendar month at Tajima. The most was 213.3 mm (8.4 in) on 26 September 1959. 0100200300 Jan: 87.1 mm (3.4 in), 25 January 1954 Jan Feb: 75.5 mm (3.0 in), 15 February 1968 Feb Mar: 58.5 mm (2.3 in), 13 March 1983 Mar Apr: 62.0 mm (2.4 in), 22 April 1986 Apr May: 71.0 mm (2.8 in), 16 May 1983 May Jun: 81.5 mm (3.2 in), 15 June 1970 Jun Jul: 107.2 mm (4.2 in), 25 July 1958 Jul Aug: 139.5 mm (5.5 in), 12 August 2026 Aug Sep: 213.3 mm (8.4 in), 26 September 1959 Sep Oct: 150.5 mm (5.9 in), 19 October 1979 Oct Nov: 69.5 mm (2.7 in), 16 November 1977 Nov Dec: 90.6 mm (3.6 in), 17 December 1959 Dec
The wettest day on record for each calendar month at Tajima. The most was 213.3 mm (8.4 in) on 26 September 1959.
Record daily precipitation for each month at Tajima
MonthRecord daily precipitation (mm)Date
Jan87.1 mm (3.4 in)25 January 1954
Feb75.5 mm (3.0 in)15 February 1968
Mar58.5 mm (2.3 in)13 March 1983
Apr62.0 mm (2.4 in)22 April 1986
May71.0 mm (2.8 in)16 May 1983
Jun81.5 mm (3.2 in)15 June 1970
Jul107.2 mm (4.2 in)25 July 1958
Aug139.5 mm (5.5 in)12 August 2026
Sep213.3 mm (8.4 in)26 September 1959
Oct150.5 mm (5.9 in)19 October 1979
Nov69.5 mm (2.7 in)16 November 1977
Dec90.6 mm (3.6 in)17 December 1959

Period of Record Coverage

1963 to 2026
Days with data per year at Tajima 29 years of record at Tajima, 1963 to 2026. 1 years have data for under 90 percent of days and are left out of rankings: 2026. 1963: 363 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days2025: 356 of 365 days2026: 274 of 365 days196519701975198019852025
29 years of record at Tajima, 1963 to 2026. 1 years have data for under 90 percent of days and are left out of rankings: 2026.
Days with data per year at Tajima
YearDays with dataShare of yearComplete
196336399%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
202535698%Yes
202627475%No

Latest Records

20
Latest records at Tajima
DateStationRecordValueBeat old record byOld record stoodSignificance
4 October 2026Tajima, JPmonthly rain (Provisional)158.0 mm (6.2 in)7.5 mm (0.30 in)46 years35 of 100 (Notable)
7 September 2026Tajima, JPdaily rain (Provisional)40.5 mm (1.6 in)3.5 mm (0.14 in)36 years19 of 100 (Routine)
1 September 2026Tajima, JPdaily rain (Provisional)158.5 mm (6.2 in)108.0 mm (4.3 in)60 years65 of 100 (Major)
31 August 2026Tajima, JPall-time rain (Provisional)351.0 mm (13.8 in)137.7 mm (5.4 in)66 years87 of 100 (Exceptional)
29 August 2026Tajima, JPdaily rain (Provisional)66.5 mm (2.6 in)19.0 mm (0.7 in)57 years36 of 100 (Notable)
20 August 2026Tajima, JPdaily rain (Provisional)106.5 mm (4.2 in)95.0 mm (3.7 in)37 years58 of 100 (Notable)
17 August 2026Tajima, JPdaily rain (Provisional)74.0 mm (2.9 in)49.3 mm (1.9 in)63 years57 of 100 (Notable)
12 August 2026Tajima, JPmonthly rain139.5 mm (5.5 in)0.5 mm (0.02 in)0 years17 of 100 (Routine)
11 August 2026Tajima, JPdaily rain68.0 mm (2.7 in)48.8 mm (1.9 in)65 years57 of 100 (Notable)
9 August 2026Tajima, JPdaily rain84.5 mm (3.3 in)32.8 mm (1.3 in)67 years48 of 100 (Notable)
8 August 2026Tajima, JPmonthly rain139.0 mm (5.5 in)14.0 mm (0.6 in)44 years39 of 100 (Notable)
31 July 2026Tajima, JPdaily rain28.0 mm (1.1 in)1.5 mm (0.06 in)52 years22 of 100 (Routine)
29 July 2026Tajima, JPdaily rain63.0 mm (2.5 in)9.7 mm (0.38 in)72 years33 of 100 (Routine)
3 March 2025Tajima, JPdaily rain32.0 mm (1.3 in)4.7 mm (0.19 in)67 years32 of 100 (Routine)
31 December 1989Tajima, JPdaily rain30.0 mm (1.2 in)11.8 mm (0.5 in)24 years21 of 100 (Routine)
18 December 1989Tajima, JPdaily rain24.0 mm (0.9 in)2.8 mm (0.11 in)32 years14 of 100 (Routine)
8 December 1989Tajima, JPdaily rain40.0 mm (1.6 in)23.0 mm (0.9 in)19 years29 of 100 (Routine)
9 November 1989Tajima, JPdaily rain37.0 mm (1.5 in)4.0 mm (0.16 in)24 years13 of 100 (Routine)
1 November 1989Tajima, JPdaily rain30.5 mm (1.2 in)4.5 mm (0.18 in)12 years10 of 100 (Routine)
19 September 1989Tajima, JPdaily rain69.5 mm (2.7 in)24.5 mm (1.0 in)7 years14 of 100 (Routine)

Climate Trend

28 complete years, 1963 to 2025
Annual mean temperature at Tajima as warming stripes, 1963 to 2025 One stripe for each of 28 complete years at Tajima, 1963 to 2025. Blue stripes are years cooler than the station's own mean of 14.4 C (57.9 F); red stripes are warmer. The coolest year was 1965, at 13.6 C (56.6 F), and the warmest was 2025, at 16.5 C (61.7 F). The strongest colour marks a difference of 2.2 C (4.0 F). 1963: 14.0 C, -0.4 C from the station mean1964: 14.9 C, +0.5 C from the station mean1965: 13.6 C, -0.8 C from the station mean1966: 14.3 C, -0.1 C from the station mean1967: 14.5 C, +0.1 C from the station mean1968: 14.1 C, -0.3 C from the station mean1969: 14.1 C, -0.3 C from the station mean1970: 14.3 C, -0.1 C from the station mean1971: 14.3 C, -0.1 C from the station mean1972: 14.7 C, +0.3 C from the station mean1973: 14.7 C, +0.3 C from the station mean1974: 14.1 C, -0.3 C from the station mean1975: 14.5 C, +0.1 C from the station mean1976: 13.8 C, -0.6 C from the station mean1977: 14.3 C, -0.1 C from the station mean1978: 14.9 C, +0.5 C from the station mean1979: 15.2 C, +0.8 C from the station mean1980: 13.7 C, -0.7 C from the station mean1981: 13.7 C, -0.7 C from the station mean1982: 14.4 C, 0.0 C from the station mean1983: 14.5 C, +0.1 C from the station mean1984: 13.7 C, -0.7 C from the station mean1985: 14.6 C, +0.2 C from the station mean1986: 13.8 C, -0.6 C from the station mean1987: 14.9 C, +0.5 C from the station mean1988: 14.0 C, -0.4 C from the station mean1989: 14.9 C, +0.5 C from the station mean2025: 16.5 C, +2.1 C from the station mean1963197019801990200020102020
One stripe for each of 28 complete years at Tajima, 1963 to 2025. Blue stripes are years cooler than the station's own mean of 14.4 C (57.9 F); red stripes are warmer. The coolest year was 1965, at 13.6 C (56.6 F), and the warmest was 2025, at 16.5 C (61.7 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Tajima as warming stripes, 1963 to 2025
YearAnnual mean temperatureDifference from the station mean
196314.0 C-0.44 C
196414.9 C+0.52 C
196513.6 C-0.76 C
196614.3 C-0.07 C
196714.5 C+0.09 C
196814.1 C-0.33 C
196914.1 C-0.27 C
197014.3 C-0.06 C
197114.3 C-0.07 C
197214.7 C+0.32 C
197314.7 C+0.25 C
197414.1 C-0.35 C
197514.5 C+0.14 C
197613.8 C-0.61 C
197714.3 C-0.10 C
197814.9 C+0.54 C
197915.2 C+0.76 C
198013.7 C-0.66 C
198113.7 C-0.71 C
198214.4 C-0.01 C
198314.5 C+0.14 C
198413.7 C-0.66 C
198514.6 C+0.16 C
198613.8 C-0.57 C
198714.9 C+0.50 C
198814.0 C-0.42 C
198914.9 C+0.49 C
202516.5 C+2.10 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1951 to 2026
Yearly extremes at Tajima: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.8 C (101.8 F)202636.3 C (97.3 F)29
Coldest night (TNn)-12.1 C (10.2 F)1963-6.8 C (19.8 F)29
Wettest day (Rx1day)351.0 mm (13.8 in)202687.5 mm (3.4 in)41
Wettest five days (Rx5day)626.5 mm (24.7 in)2026140.5 mm (5.5 in)41
Longest dry spell (CDD)33 days197814 days41

Hottest day (TXx)

Hottest day (TXx) at Tajima by year The hottest day of the year at Tajima, 1951 to 2026. The record is 38.8 C (101.8 F) in 2026, marked on the chart; the median year is 36.3 C (97.3 F). 343638401960198020002020Record: 38.8 C (101.8 F) in 2026
The hottest day of the year at Tajima, 1951 to 2026. The record is 38.8 C (101.8 F) in 2026, marked on the chart; the median year is 36.3 C (97.3 F).
Hottest day (TXx) at Tajima by year
YearHottest day (TXx)
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
196334.1 C (93.4 F)
196436.6 C (97.9 F)
196535.7 C (96.3 F)
196637.1 C (98.8 F)
196736.4 C (97.5 F)
196835.4 C (95.7 F)
196938.0 C (100.4 F)
197036.1 C (97.0 F)
197136.3 C (97.3 F)
197235.8 C (96.4 F)
197336.5 C (97.7 F)
197435.4 C (95.7 F)
197536.8 C (98.2 F)
197635.3 C (95.5 F)
197735.7 C (96.3 F)
197838.0 C (100.4 F)
197936.2 C (97.2 F)
198034.7 C (94.5 F)
198136.1 C (97.0 F)
198234.8 C (94.6 F)
198336.4 C (97.5 F)
198436.7 C (98.1 F)
198537.4 C (99.3 F)
198636.5 C (97.7 F)
198736.5 C (97.7 F)
198836.2 C (97.2 F)
198935.6 C (96.1 F)
202538.6 C (101.5 F)
202638.8 C (101.8 F)

Coldest night (TNn)

Coldest night (TNn) at Tajima by year The coldest night of the year at Tajima, 1951 to 2026. The record is -12.1 C (10.2 F) in 1963, marked on the chart; the median year is -6.8 C (19.8 F). -12.5-10-7.5-5-2.51960198020002020Record: -12.1 C (10.2 F) in 1963
The coldest night of the year at Tajima, 1951 to 2026. The record is -12.1 C (10.2 F) in 1963, marked on the chart; the median year is -6.8 C (19.8 F).
Coldest night (TNn) at Tajima by year
YearColdest night (TNn)
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963-12.1 C (10.2 F)
1964-3.2 C (26.2 F)
1965-6.5 C (20.3 F)
1966-9.3 C (15.3 F)
1967-9.6 C (14.7 F)
1968-9.2 C (15.4 F)
1969-6.7 C (19.9 F)
1970-10.9 C (12.4 F)
1971-9.1 C (15.6 F)
1972-4.8 C (23.4 F)
1973-5.0 C (23.0 F)
1974-5.7 C (21.7 F)
1975-7.0 C (19.4 F)
1976-7.7 C (18.1 F)
1977-11.1 C (12.0 F)
1978-7.7 C (18.1 F)
1979-3.3 C (26.1 F)
1980-7.0 C (19.4 F)
1981-7.0 C (19.4 F)
1982-6.8 C (19.8 F)
1983-5.1 C (22.8 F)
1984-8.2 C (17.2 F)
1985-6.8 C (19.8 F)
1986-7.3 C (18.9 F)
1987-4.7 C (23.5 F)
1988-3.7 C (25.3 F)
1989-3.4 C (25.9 F)
2025-3.0 C (26.6 F)
2026-3.5 C (25.7 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Tajima by year The wettest day of the year at Tajima, 1951 to 2026. The record is 351.0 mm (13.8 in) in 2026, marked on the chart; the median year is 87.5 mm (3.4 in). 01002003004001960198020002020Record: 351.0 mm (13.8 in) in 2026
The wettest day of the year at Tajima, 1951 to 2026. The record is 351.0 mm (13.8 in) in 2026, marked on the chart; the median year is 87.5 mm (3.4 in).
Wettest day (Rx1day) at Tajima by year
YearWettest day (Rx1day)
195176.8 mm (3.0 in)
195273.0 mm (2.9 in)
1953111.7 mm (4.4 in)
195487.1 mm (3.4 in)
195565.3 mm (2.6 in)
195677.2 mm (3.0 in)
195781.5 mm (3.2 in)
1958107.2 mm (4.2 in)
1959213.3 mm (8.4 in)
196079.4 mm (3.1 in)
1961105.3 mm (4.1 in)
196279.7 mm (3.1 in)
196348.1 mm (1.9 in)
1964100.5 mm (4.0 in)
1965130.5 mm (5.1 in)
1966140.7 mm (5.5 in)
1967103.4 mm (4.1 in)
196875.5 mm (3.0 in)
196951.0 mm (2.0 in)
197081.5 mm (3.2 in)
1971111.5 mm (4.4 in)
1972180.0 mm (7.1 in)
197359.0 mm (2.3 in)
197495.0 mm (3.7 in)
1975101.5 mm (4.0 in)
1976199.0 mm (7.8 in)
197769.5 mm (2.7 in)
197859.0 mm (2.3 in)
1979150.5 mm (5.9 in)
198063.0 mm (2.5 in)
198159.0 mm (2.3 in)
1982125.0 mm (4.9 in)
1983131.0 mm (5.2 in)
198476.5 mm (3.0 in)
1985108.0 mm (4.3 in)
198662.0 mm (2.4 in)
1987103.5 mm (4.1 in)
198888.5 mm (3.5 in)
198987.5 mm (3.4 in)
202532.0 mm (1.3 in)
2026351.0 mm (13.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Tajima by year The wettest five days of the year at Tajima, 1951 to 2026. The record is 626.5 mm (24.7 in) in 2026, marked on the chart; the median year is 140.5 mm (5.5 in). 02004006008001960198020002020Record: 626.5 mm (24.7 in) in 2026
The wettest five days of the year at Tajima, 1951 to 2026. The record is 626.5 mm (24.7 in) in 2026, marked on the chart; the median year is 140.5 mm (5.5 in).
Wettest five days (Rx5day) at Tajima by year
YearWettest five days (Rx5day)
1951135.3 mm (5.3 in)
1952127.9 mm (5.0 in)
1953284.6 mm (11.2 in)
1954158.6 mm (6.2 in)
1955136.1 mm (5.4 in)
1956108.1 mm (4.3 in)
1957103.0 mm (4.1 in)
1958158.0 mm (6.2 in)
1959280.3 mm (11.0 in)
1960125.4 mm (4.9 in)
1961204.7 mm (8.1 in)
1962118.8 mm (4.7 in)
1963107.5 mm (4.2 in)
1964191.5 mm (7.5 in)
1965368.6 mm (14.5 in)
1966272.4 mm (10.7 in)
1967202.6 mm (8.0 in)
1968110.5 mm (4.4 in)
196977.5 mm (3.1 in)
1970193.5 mm (7.6 in)
1971176.0 mm (6.9 in)
1972284.0 mm (11.2 in)
1973104.5 mm (4.1 in)
1974126.0 mm (5.0 in)
1975181.5 mm (7.1 in)
1976464.5 mm (18.3 in)
1977123.0 mm (4.8 in)
1978104.0 mm (4.1 in)
1979221.5 mm (8.7 in)
1980102.5 mm (4.0 in)
1981115.0 mm (4.5 in)
1982197.0 mm (7.8 in)
1983211.0 mm (8.3 in)
1984122.0 mm (4.8 in)
1985123.5 mm (4.9 in)
198695.5 mm (3.8 in)
1987175.5 mm (6.9 in)
1988165.5 mm (6.5 in)
1989140.5 mm (5.5 in)
202589.0 mm (3.5 in)
2026626.5 mm (24.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Tajima by year The longest dry spell of the year at Tajima, 1951 to 2026. The record is 33 days in 1978, marked on the chart; the median year is 14 days. 0102030401960198020002020Record: 33 days in 1978
The longest dry spell of the year at Tajima, 1951 to 2026. The record is 33 days in 1978, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Tajima by year
YearLongest dry spell (CDD)
195122 days
195219 days
195313 days
195412 days
195514 days
195612 days
19579 days
195814 days
195914 days
196014 days
196122 days
196212 days
196312 days
196415 days
196511 days
196618 days
196716 days
196811 days
196915 days
197014 days
197119 days
197214 days
197327 days
19749 days
197515 days
197613 days
197721 days
197833 days
197912 days
19809 days
198111 days
198212 days
198321 days
198416 days
198525 days
198616 days
198711 days
198815 days
198911 days
202517 days
202610 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

28 years with a frost

Across 28 years with a frost, the median last spring frost at Tajima falls on 6 April and the median first autumn frost on 29 November, which leaves a median of 235 days between them.

Fitted over all years, the growing season changes by +4.7 days per decade at this station.

Frost dates and growing season at Tajima
MeasureMedian, all yearsEarliest periodRecent period (1963 to 2025)Recent against earliestFitted trend
Last spring frost6 Apriln/a6 Apriln/a-0.6 days per decade
First autumn frost29 Novembern/a29 Novembern/a+4.1 days per decade
Growing days235 daysn/a235 daysn/a+4.7 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

39 years, 1951 to 1989

A day with at least 88.6 mm (3.5 in) of rain is expected about once in 2 years. A day with at least 244.7 mm (9.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Tajima: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years88.6 mm (3.5 in)
5 years121.5 mm (4.8 in)
10 years146.4 mm (5.8 in)
25 years182.1 mm (7.2 in)
50 years211.9 mm (8.3 in)Longer than the 39 years of record
100 years244.7 mm (9.6 in)Longer than the 39 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 39 years of values from 1951 to 1989.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 213.3 mm (8.4 in) in 1959; 199.0 mm (7.8 in) in 1976; 180.0 mm (7.1 in) in 1972.

Download the Data

  • Data for Tajima standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Tajima threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).