Omaezaki Weather Records (JA000047655)

Record envelope, standing records and threshold days for Omaezaki (JA000047655), Japan, with 76 years of record.

Key Facts for Omaezaki

Omaezaki (JA000047655) is a weather station in Japan at 34.60 latitude and 138.22 longitude, 47 m (154 ft) above sea level.
The station reports from 1951 to 2026, 76 years of record.
1,464 records set at Omaezaki still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Omaezaki set a daily record precipitation of 172.5 mm (6.8 in) on 3 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, 34.60 latitude, 138.22 longitude.
Elevation: 47 m (154 ft).
Period of record: 1951 to 2026, 76 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

8 days at or beyond a record

The band shows the record high and record low for each calendar day at Omaezaki. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Omaezaki, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	18.8 C (65.8 F)	-5.0 C (23.0 F)	17.6 C (63.7 F)	-0.6 C (30.9 F)
Feb	22.8 C (73.0 F)	-5.2 C (22.6 F)	18.9 C (66.0 F)	-1.9 C (28.6 F)
Mar	22.9 C (73.2 F)	-3.0 C (26.6 F)	17.7 C (63.9 F)	3.0 C (37.4 F)
Apr	25.5 C (77.9 F)	0.4 C (32.7 F)	23.8 C (74.8 F)	6.8 C (44.2 F)
May	27.6 C (81.7 F)	7.2 C (45.0 F)	26.1 C (79.0 F)	10.1 C (50.2 F)
Jun	31.6 C (88.9 F)	11.3 C (52.3 F)	28.8 C (83.8 F)	17.6 C (63.7 F)
Jul	36.7 C (98.1 F)	16.0 C (60.8 F)	32.4 C (90.3 F)	19.8 C (67.6 F)
Aug	36.4 C (97.5 F)	18.5 C (65.3 F)	32.8 C (91.0 F)	21.2 C (70.2 F)
Sep	33.0 C (91.4 F)	11.8 C (53.2 F)	32.5 C (90.5 F)	17.4 C (63.3 F)
Oct	29.9 C (85.8 F)	6.4 C (43.5 F)	27.6 C (81.7 F)	16.2 C (61.2 F)
Nov	26.1 C (79.0 F)	0.7 C (33.3 F)	n/a	n/a
Dec	22.4 C (72.3 F)	-3.2 C (26.2 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Omaezaki still stand. 2025 holds the most, with 68.

Standing records at Omaezaki by the year they were set
Year set	Standing records
1951	17
1952	12
1953	23
1954	28
1955	12
1956	30
1957	30
1958	23
1959	27
1960	18
1961	33
1962	13
1963	28
1964	12
1965	27
1966	20
1967	29
1968	28
1969	38
1970	34
1971	22
1972	24
1973	26
1974	21
1975	8
1976	39
1977	40
1978	9
1979	23
1980	23
1981	32
1982	20
1983	16
1984	23
1985	13
1986	18
1987	20
1988	20
1989	20
1990	9
1991	9
1992	11
1993	27
1994	25
1995	9
1996	13
1997	13
1998	21
1999	5
2000	10
2001	10
2002	17
2003	15
2004	17
2005	12
2006	9
2007	10
2008	9
2009	11
2010	18
2011	15
2012	13
2013	15
2014	2
2015	8
2016	16
2017	7
2018	25
2019	23
2020	19
2021	11
2022	10
2023	8
2024	20
2025	68
2026	25

All-Time Record Progression

11 new records

11 all-time records were set at Omaezaki between 26 February 1981 and 4 August 2025. Each dot is a new record.

When Omaezaki set new all-time records
Date	Kind	Detail
1981-02-26	Record low maximum temperature	Record low maximum temperature 1.7 C (35.1 F)
1981-02-27	Record low minimum temperature	Record low minimum temperature -5.2 C (22.6 F)
1990-08-22	Record high minimum temperature	Record high minimum temperature 26.7 C (80.1 F)
1994-08-02	Record high minimum temperature	Record high minimum temperature 26.9 C (80.4 F)
1994-08-03	Record high maximum temperature	Record high maximum temperature 36.4 C (97.5 F)
1994-08-05	Record high minimum temperature	Record high minimum temperature 27.6 C (81.7 F)
2004-07-20	Record high maximum temperature	Record high maximum temperature 36.7 C (98.1 F)
2019-10-12	Record daily precipitation	Record daily precipitation 287.0 mm (11.3 in)
2024-08-18	Record high minimum temperature	Record high minimum temperature 27.7 C (81.9 F)
2025-08-03	Record high minimum temperature	Record high minimum temperature 27.9 C (82.2 F)
2025-08-04	Record high minimum temperature	Record high minimum temperature 28.0 C (82.4 F)

Wettest Day of Each Month

Oct: 287.0 mm (11.3 in)

The wettest day on record for each calendar month at Omaezaki. The most was 287.0 mm (11.3 in) on 12 October 2019.

Record daily precipitation for each month at Omaezaki
Month	Record daily precipitation (mm)	Date
Jan	145.0 mm (5.7 in)	31 January 2009
Feb	142.5 mm (5.6 in)	17 February 1989
Mar	112.5 mm (4.4 in)	31 March 2004
Apr	209.0 mm (8.2 in)	23 April 2012
May	216.9 mm (8.5 in)	31 May 2003
Jun	205.4 mm (8.1 in)	28 June 1966
Jul	283.5 mm (11.2 in)	2 July 2026
Aug	230.1 mm (9.1 in)	15 August 2003
Sep	274.5 mm (10.8 in)	27 September 1974
Oct	287.0 mm (11.3 in)	12 October 2019
Nov	161.5 mm (6.4 in)	17 November 1977
Dec	90.6 mm (3.6 in)	2 December 1959

Period of Record Coverage

1951 to 2026

76 years of record at Omaezaki, 1951 to 2026. 10 years have data for under 90 percent of days and are left out of rankings: 2013, 2014, 2015, 2017, 2020, 2021, 2022, 2023 and others.

Days with data per year at Omaezaki
Year	Days with data	Share of year	Complete
1951	365	100%	Yes
1952	366	100%	Yes
1953	364	100%	Yes
1954	365	100%	Yes
1955	361	99%	Yes
1956	363	99%	Yes
1957	362	99%	Yes
1958	364	100%	Yes
1959	363	99%	Yes
1960	364	99%	Yes
1961	363	99%	Yes
1962	362	99%	Yes
1963	364	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	353	97%	Yes
1991	347	95%	Yes
1992	350	96%	Yes
1993	343	94%	Yes
1994	360	99%	Yes
1995	344	94%	Yes
1996	352	96%	Yes
1997	340	93%	Yes
1998	339	93%	Yes
1999	344	94%	Yes
2000	350	96%	Yes
2001	345	95%	Yes
2002	339	93%	Yes
2003	334	92%	Yes
2004	342	93%	Yes
2005	353	97%	Yes
2006	344	94%	Yes
2007	346	95%	Yes
2008	352	96%	Yes
2009	350	96%	Yes
2010	345	95%	Yes
2011	350	96%	Yes
2012	346	95%	Yes
2013	116	32%	No
2014	2	1%	No
2015	278	76%	No
2016	334	91%	Yes
2017	326	89%	No
2018	333	91%	Yes
2019	331	91%	Yes
2020	70	19%	No
2021	5	1%	No
2022	145	40%	No
2023	8	2%	No
2024	3	1%	No
2025	360	99%	Yes
2026	277	76%	No

Latest Records

Latest records at Omaezaki
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 October 2026	Omaezaki, JP	daily rain (Provisional)	172.5 mm (6.8 in)	104.4 mm (4.1 in)	16 years	47 of 100 (Notable)
28 September 2026	Omaezaki, JP	daily rain (Provisional)	319.5 mm (12.6 in)	260.0 mm (10.2 in)	43 years	59 of 100 (Notable)
26 September 2026	Omaezaki, JP	all-time rain (Provisional)	385.0 mm (15.2 in)	49.0 mm (1.9 in)	0 years	44 of 100 (Notable)
20 September 2026	Omaezaki, JP	daily high max (Provisional)	32.5 C (90.5 F)	3.3 C (5.9 F)	40 years	32 of 100 (Routine)
4 September 2026	Omaezaki, JP	all-time rain (Provisional)	336.0 mm (13.2 in)	49.0 mm (1.9 in)	6 years	46 of 100 (Notable)
3 September 2026	Omaezaki, JP	daily rain (Provisional)	252.6 mm (9.9 in)	217.6 mm (8.6 in)	40 years	59 of 100 (Notable)
3 September 2026	Omaezaki, JP	daily low min (Provisional)	17.4 C (63.3 F)	0.4 C (0.7 F)	55 years	24 of 100 (Routine)
1 September 2026	Omaezaki, JP	daily high min (Provisional)	26.1 C (79.0 F)	0.2 C (0.4 F)	4 years	8 of 100 (Routine)
26 August 2026	Omaezaki, JP	daily high min (Provisional)	27.4 C (81.3 F)	0.8 C (1.4 F)	0 years	12 of 100 (Routine)
25 August 2026	Omaezaki, JP	daily high min (Provisional)	27.2 C (81.0 F)	1.1 C (2.0 F)	0 years	14 of 100 (Routine)
2 August 2026	Omaezaki, JP	daily high max (Tie)	32.8 C (91.0 F)	tie	72 years	7 of 100 (Routine)
25 July 2026	Omaezaki, JP	daily high min	27.3 C (81.1 F)	0.5 C (0.9 F)	17 years	14 of 100 (Routine)
23 July 2026	Omaezaki, JP	daily high min	27.1 C (80.8 F)	0.2 C (0.4 F)	8 years	10 of 100 (Routine)
21 July 2026	Omaezaki, JP	monthly high min	27.4 C (81.3 F)	0.1 C (0.2 F)	1 year	17 of 100 (Routine)
20 July 2026	Omaezaki, JP	daily high min	26.8 C (80.2 F)	0.5 C (0.9 F)	21 years	15 of 100 (Routine)
19 July 2026	Omaezaki, JP	daily high min	26.4 C (79.5 F)	0.5 C (0.9 F)	1 year	9 of 100 (Routine)
18 July 2026	Omaezaki, JP	daily high min	25.6 C (78.1 F)	0.1 C (0.2 F)	71 years	28 of 100 (Routine)
17 July 2026	Omaezaki, JP	daily high min	26.4 C (79.5 F)	0.5 C (0.9 F)	0 years	9 of 100 (Routine)
14 July 2026	Omaezaki, JP	daily high min	25.6 C (78.1 F)	0.2 C (0.4 F)	32 years	17 of 100 (Routine)
6 July 2026	Omaezaki, JP	daily rain	251.0 mm (9.9 in)	33.5 mm (1.3 in)	57 years	34 of 100 (Routine)

Climate Trend

40 complete years, 1951 to 2025

One stripe for each of 40 complete years at Omaezaki, 1951 to 2025. Blue stripes are years cooler than the station's own mean of 16.2 C (61.1 F); red stripes are warmer. The coolest year was 1965, at 15.4 C (59.6 F), and the warmest was 2025, at 17.9 C (64.1 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Omaezaki as warming stripes, 1951 to 2025
Year	Annual mean temperature	Difference from the station mean
1951	16.3 C	+0.13 C
1952	16.2 C	+0.06 C
1953	16.2 C	0.00 C
1954	16.5 C	+0.35 C
1955	16.8 C	+0.64 C
1956	15.9 C	-0.21 C
1957	15.8 C	-0.34 C
1958	16.4 C	+0.27 C
1959	17.0 C	+0.89 C
1960	16.8 C	+0.68 C
1961	16.9 C	+0.77 C
1962	16.3 C	+0.11 C
1963	15.6 C	-0.53 C
1964	16.3 C	+0.13 C
1965	15.4 C	-0.80 C
1966	16.2 C	0.00 C
1967	16.2 C	+0.01 C
1968	15.9 C	-0.21 C
1969	16.0 C	-0.14 C
1970	15.7 C	-0.48 C
1971	15.8 C	-0.36 C
1972	16.1 C	-0.05 C
1973	15.6 C	-0.57 C
1974	15.6 C	-0.58 C
1975	15.9 C	-0.27 C
1976	15.8 C	-0.35 C
1977	16.2 C	+0.06 C
1978	16.4 C	+0.21 C
1979	16.8 C	+0.67 C
1980	15.6 C	-0.51 C
1981	15.4 C	-0.73 C
1982	16.0 C	-0.16 C
1983	16.1 C	-0.08 C
1984	15.6 C	-0.53 C
1985	16.2 C	+0.05 C
1986	15.6 C	-0.56 C
1987	16.8 C	+0.64 C
1988	15.9 C	-0.29 C
1989	16.6 C	+0.40 C
2025	17.9 C	+1.70 C

The fitted trend in annual mean temperature here over 1951 to 2025 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Omaezaki
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (-0.1 to 0.2) per decade	0.1 F (-0.1 to 0.3) per decade	1951 to 2025	40	Not clearly different from zero
Mean daily maximum	0.02 C (-0.08 to 0.12) per decade	0.04 F (-0.15 to 0.22) per decade	1951 to 2025	40	Not clearly different from zero
Mean daily minimum	0.1 C (-0.1 to 0.2) per decade	0.2 F (-0.1 to 0.4) per decade	1951 to 2025	40	Not clearly different from zero

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 Omaezaki: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	2004	32.0 C (89.6 F)	76
Coldest night (TNn)	-5.2 C (22.6 F)	1981	-2.3 C (27.8 F)	76
Wettest day (Rx1day)	385.0 mm (15.2 in)	2026	142.0 mm (5.6 in)	76
Wettest five days (Rx5day)	934.0 mm (36.8 in)	2026	207.5 mm (8.2 in)	73
Longest dry spell (CDD)	40 days	1973	18 days	74

Hottest day (TXx)

The hottest day of the year at Omaezaki, 1951 to 2026. The record is 36.7 C (98.1 F) in 2004, marked on the chart; the median year is 32.0 C (89.6 F).

Hottest day (TXx) at Omaezaki by year
Year	Hottest day (TXx)
1951	33.5 C (92.3 F)
1952	33.7 C (92.7 F)
1953	33.6 C (92.5 F)
1954	32.1 C (89.8 F)
1955	32.8 C (91.0 F)
1956	32.4 C (90.3 F)
1957	30.3 C (86.5 F)
1958	30.5 C (86.9 F)
1959	30.8 C (87.4 F)
1960	32.3 C (90.1 F)
1961	33.8 C (92.8 F)
1962	33.1 C (91.6 F)
1963	30.7 C (87.3 F)
1964	31.8 C (89.2 F)
1965	31.4 C (88.5 F)
1966	31.8 C (89.2 F)
1967	31.7 C (89.1 F)
1968	31.4 C (88.5 F)
1969	33.0 C (91.4 F)
1970	31.1 C (88.0 F)
1971	32.3 C (90.1 F)
1972	31.2 C (88.2 F)
1973	30.4 C (86.7 F)
1974	30.6 C (87.1 F)
1975	30.5 C (86.9 F)
1976	31.5 C (88.7 F)
1977	31.8 C (89.2 F)
1978	34.9 C (94.8 F)
1979	31.6 C (88.9 F)
1980	31.2 C (88.2 F)
1981	32.0 C (89.6 F)
1982	30.2 C (86.4 F)
1983	33.2 C (91.8 F)
1984	32.1 C (89.8 F)
1985	32.3 C (90.1 F)
1986	34.4 C (93.9 F)
1987	33.7 C (92.7 F)
1988	31.4 C (88.5 F)
1989	31.0 C (87.8 F)
1990	34.3 C (93.7 F)
1991	32.5 C (90.5 F)
1992	31.2 C (88.2 F)
1993	31.4 C (88.5 F)
1994	36.4 C (97.5 F)
1995	32.9 C (91.2 F)
1996	31.9 C (89.4 F)
1997	31.4 C (88.5 F)
1998	31.8 C (89.2 F)
1999	31.5 C (88.7 F)
2000	33.0 C (91.4 F)
2001	33.3 C (91.9 F)
2002	33.4 C (92.1 F)
2003	31.7 C (89.1 F)
2004	36.7 C (98.1 F)
2005	31.4 C (88.5 F)
2006	33.0 C (91.4 F)
2007	33.5 C (92.3 F)
2008	36.4 C (97.5 F)
2009	31.8 C (89.2 F)
2010	33.1 C (91.6 F)
2011	31.4 C (88.5 F)
2012	32.0 C (89.6 F)
2013	28.6 C (83.5 F)
2014	27.7 C (81.9 F)
2015	32.7 C (90.9 F)
2016	33.6 C (92.5 F)
2017	33.1 C (91.6 F)
2018	33.7 C (92.7 F)
2019	32.6 C (90.7 F)
2020	24.4 C (75.9 F)
2021	31.2 C (88.2 F)
2022	33.0 C (91.4 F)
2023	31.6 C (88.9 F)
2024	25.9 C (78.6 F)
2025	32.7 C (90.9 F)
2026	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at Omaezaki, 1951 to 2026. The record is -5.2 C (22.6 F) in 1981, marked on the chart; the median year is -2.3 C (27.8 F).

Coldest night (TNn) at Omaezaki by year
Year	Coldest night (TNn)
1951	-2.7 C (27.1 F)
1952	-3.1 C (26.4 F)
1953	-2.1 C (28.2 F)
1954	-3.0 C (26.6 F)
1955	-2.2 C (28.0 F)
1956	-3.0 C (26.6 F)
1957	-2.9 C (26.8 F)
1958	-3.2 C (26.2 F)
1959	-4.1 C (24.6 F)
1960	-3.0 C (26.6 F)
1961	-2.9 C (26.8 F)
1962	-2.1 C (28.2 F)
1963	-5.0 C (23.0 F)
1964	-1.6 C (29.1 F)
1965	-2.6 C (27.3 F)
1966	-3.7 C (25.3 F)
1967	-3.9 C (25.0 F)
1968	-2.3 C (27.9 F)
1969	-2.1 C (28.2 F)
1970	-4.0 C (24.8 F)
1971	-2.9 C (26.8 F)
1972	-0.9 C (30.4 F)
1973	-3.2 C (26.2 F)
1974	-2.9 C (26.8 F)
1975	-2.8 C (27.0 F)
1976	-2.9 C (26.8 F)
1977	-5.1 C (22.8 F)
1978	-2.5 C (27.5 F)
1979	-1.2 C (29.8 F)
1980	-2.5 C (27.5 F)
1981	-5.2 C (22.6 F)
1982	-1.9 C (28.6 F)
1983	-3.1 C (26.4 F)
1984	-4.1 C (24.6 F)
1985	-2.8 C (27.0 F)
1986	-2.3 C (27.9 F)
1987	-1.8 C (28.8 F)
1988	-1.6 C (29.1 F)
1989	-1.9 C (28.6 F)
1990	-2.5 C (27.5 F)
1991	-2.8 C (27.0 F)
1992	-1.0 C (30.2 F)
1993	-0.6 C (30.9 F)
1994	-1.3 C (29.7 F)
1995	-2.1 C (28.2 F)
1996	-1.9 C (28.6 F)
1997	-4.4 C (24.1 F)
1998	-1.9 C (28.6 F)
1999	-4.2 C (24.4 F)
2000	-2.3 C (27.9 F)
2001	-1.8 C (28.8 F)
2002	-1.7 C (28.9 F)
2003	-2.8 C (27.0 F)
2004	-1.9 C (28.6 F)
2005	-2.1 C (28.2 F)
2006	-2.5 C (27.5 F)
2007	0.6 C (33.1 F)
2008	-2.7 C (27.1 F)
2009	-0.4 C (31.3 F)
2010	-0.9 C (30.4 F)
2011	-2.4 C (27.7 F)
2012	-3.1 C (26.4 F)
2013	-1.7 C (28.9 F)
2014	-1.9 C (28.6 F)
2015	-0.4 C (31.3 F)
2016	-3.4 C (25.9 F)
2017	-2.3 C (27.9 F)
2018	-2.0 C (28.4 F)
2019	0.3 C (32.5 F)
2020	0.5 C (32.9 F)
2021	-2.5 C (27.5 F)
2022	-1.1 C (30.0 F)
2023	-3.4 C (25.9 F)
2024	-0.1 C (31.8 F)
2025	-1.4 C (29.5 F)
2026	-1.9 C (28.6 F)

Wettest day (Rx1day)

The wettest day of the year at Omaezaki, 1951 to 2026. The record is 385.0 mm (15.2 in) in 2026, marked on the chart; the median year is 142.0 mm (5.6 in).

Wettest day (Rx1day) at Omaezaki by year
Year	Wettest day (Rx1day)
1951	204.6 mm (8.1 in)
1952	136.2 mm (5.4 in)
1953	152.7 mm (6.0 in)
1954	121.7 mm (4.8 in)
1955	77.4 mm (3.0 in)
1956	96.8 mm (3.8 in)
1957	91.3 mm (3.6 in)
1958	163.5 mm (6.4 in)
1959	116.9 mm (4.6 in)
1960	135.7 mm (5.3 in)
1961	71.9 mm (2.8 in)
1962	130.6 mm (5.1 in)
1963	196.7 mm (7.7 in)
1964	89.1 mm (3.5 in)
1965	147.8 mm (5.8 in)
1966	205.4 mm (8.1 in)
1967	101.9 mm (4.0 in)
1968	217.5 mm (8.6 in)
1969	95.5 mm (3.8 in)
1970	111.0 mm (4.4 in)
1971	137.5 mm (5.4 in)
1972	260.0 mm (10.2 in)
1973	175.0 mm (6.9 in)
1974	274.5 mm (10.8 in)
1975	125.5 mm (4.9 in)
1976	129.0 mm (5.1 in)
1977	161.5 mm (6.4 in)
1978	90.0 mm (3.5 in)
1979	114.0 mm (4.5 in)
1980	147.0 mm (5.8 in)
1981	143.0 mm (5.6 in)
1982	262.5 mm (10.3 in)
1983	152.0 mm (6.0 in)
1984	91.0 mm (3.6 in)
1985	129.5 mm (5.1 in)
1986	210.0 mm (8.3 in)
1987	115.0 mm (4.5 in)
1988	122.5 mm (4.8 in)
1989	142.5 mm (5.6 in)
1990	131.1 mm (5.2 in)
1991	226.1 mm (8.9 in)
1992	110.0 mm (4.3 in)
1993	230.1 mm (9.1 in)
1994	142.0 mm (5.6 in)
1995	120.9 mm (4.8 in)
1996	110.0 mm (4.3 in)
1997	118.1 mm (4.6 in)
1998	84.1 mm (3.3 in)
1999	213.1 mm (8.4 in)
2000	175.5 mm (6.9 in)
2001	142.0 mm (5.6 in)
2002	147.1 mm (5.8 in)
2003	230.1 mm (9.1 in)
2004	251.5 mm (9.9 in)
2005	156.0 mm (6.1 in)
2006	167.4 mm (6.6 in)
2007	200.4 mm (7.9 in)
2008	114.6 mm (4.5 in)
2009	145.0 mm (5.7 in)
2010	96.5 mm (3.8 in)
2011	115.1 mm (4.5 in)
2012	209.0 mm (8.2 in)
2013	103.9 mm (4.1 in)
2014	154.9 mm (6.1 in)
2015	166.9 mm (6.6 in)
2016	98.0 mm (3.9 in)
2017	149.1 mm (5.9 in)
2018	110.0 mm (4.3 in)
2019	287.0 mm (11.3 in)
2020	94.0 mm (3.7 in)
2021	138.9 mm (5.5 in)
2022	260.1 mm (10.2 in)
2023	204.0 mm (8.0 in)
2024	229.1 mm (9.0 in)
2025	71.0 mm (2.8 in)
2026	385.0 mm (15.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Omaezaki, 1951 to 2026. The record is 934.0 mm (36.8 in) in 2026, marked on the chart; the median year is 207.5 mm (8.2 in).

Wettest five days (Rx5day) at Omaezaki by year
Year	Wettest five days (Rx5day)
1951	377.5 mm (14.9 in)
1952	248.1 mm (9.8 in)
1953	220.4 mm (8.7 in)
1954	207.5 mm (8.2 in)
1955	128.4 mm (5.1 in)
1956	174.1 mm (6.9 in)
1957	175.1 mm (6.9 in)
1958	283.2 mm (11.1 in)
1959	183.8 mm (7.2 in)
1960	221.6 mm (8.7 in)
1961	143.8 mm (5.7 in)
1962	164.8 mm (6.5 in)
1963	304.6 mm (12.0 in)
1964	176.3 mm (6.9 in)
1965	227.1 mm (8.9 in)
1966	306.2 mm (12.1 in)
1967	171.8 mm (6.8 in)
1968	348.5 mm (13.7 in)
1969	185.5 mm (7.3 in)
1970	262.5 mm (10.3 in)
1971	169.0 mm (6.7 in)
1972	348.0 mm (13.7 in)
1973	191.0 mm (7.5 in)
1974	301.0 mm (11.9 in)
1975	165.0 mm (6.5 in)
1976	161.0 mm (6.3 in)
1977	234.0 mm (9.2 in)
1978	164.5 mm (6.5 in)
1979	241.0 mm (9.5 in)
1980	190.5 mm (7.5 in)
1981	186.0 mm (7.3 in)
1982	582.5 mm (22.9 in)
1983	315.5 mm (12.4 in)
1984	195.0 mm (7.7 in)
1985	175.0 mm (6.9 in)
1986	211.5 mm (8.3 in)
1987	191.5 mm (7.5 in)
1988	210.5 mm (8.3 in)
1989	204.5 mm (8.1 in)
1990	n/a
1991	260.1 mm (10.2 in)
1992	40.9 mm (1.6 in)
1993	156.9 mm (6.2 in)
1994	200.9 mm (7.9 in)
1995	122.5 mm (4.8 in)
1996	n/a
1997	215.6 mm (8.5 in)
1998	140.9 mm (5.5 in)
1999	200.7 mm (7.9 in)
2000	25.4 mm (1.0 in)
2001	n/a
2002	195.8 mm (7.7 in)
2003	393.2 mm (15.5 in)
2004	472.5 mm (18.6 in)
2005	184.2 mm (7.3 in)
2006	228.1 mm (9.0 in)
2007	319.1 mm (12.6 in)
2008	161.3 mm (6.4 in)
2009	167.1 mm (6.6 in)
2010	173.4 mm (6.8 in)
2011	159.8 mm (6.3 in)
2012	277.1 mm (10.9 in)
2013	163.1 mm (6.4 in)
2014	263.8 mm (10.4 in)
2015	329.0 mm (13.0 in)
2016	213.1 mm (8.4 in)
2017	173.0 mm (6.8 in)
2018	230.4 mm (9.1 in)
2019	292.6 mm (11.5 in)
2020	222.8 mm (8.8 in)
2021	307.8 mm (12.1 in)
2022	326.1 mm (12.8 in)
2023	224.6 mm (8.8 in)
2024	644.1 mm (25.4 in)
2025	71.0 mm (2.8 in)
2026	934.0 mm (36.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Omaezaki, 1951 to 2026. The record is 40 days in 1973, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Omaezaki by year
Year	Longest dry spell (CDD)
1951	13 days
1952	13 days
1953	13 days
1954	17 days
1955	18 days
1956	23 days
1957	14 days
1958	11 days
1959	17 days
1960	22 days
1961	17 days
1962	22 days
1963	33 days
1964	27 days
1965	29 days
1966	23 days
1967	28 days
1968	23 days
1969	20 days
1970	29 days
1971	19 days
1972	13 days
1973	40 days
1974	20 days
1975	22 days
1976	18 days
1977	14 days
1978	15 days
1979	22 days
1980	19 days
1981	13 days
1982	16 days
1983	21 days
1984	16 days
1985	24 days
1986	18 days
1987	17 days
1988	27 days
1989	19 days
1990	2 days
1991	2 days
1992	4 days
1993	1 day
1994	1 day
1995	2 days
1996	2 days
1997	2 days
1998	2 days
1999	10 days
2000	n/a
2001	n/a
2002	1 day
2003	19 days
2004	15 days
2005	25 days
2006	11 days
2007	17 days
2008	23 days
2009	19 days
2010	20 days
2011	39 days
2012	16 days
2013	18 days
2014	20 days
2015	15 days
2016	16 days
2017	17 days
2018	19 days
2019	17 days
2020	19 days
2021	15 days
2022	18 days
2023	22 days
2024	21 days
2025	18 days
2026	40 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.

Rainfall Return Levels

59 years, 1951 to 2024

A day with at least 139.2 mm (5.5 in) of rain is expected about once in 2 years. A day with at least 333.8 mm (13.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Omaezaki: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	139.2 mm (5.5 in)
5 years	186.8 mm (7.4 in)
10 years	220.0 mm (8.7 in)
25 years	264.1 mm (10.4 in)
50 years	298.4 mm (11.7 in)
100 years	333.8 mm (13.1 in)	Longer than the 59 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, 59 years of values from 1951 to 2024.

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: 287.0 mm (11.3 in) in 2019; 274.5 mm (10.8 in) in 1974; 262.5 mm (10.3 in) in 1982.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Omaezaki standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Omaezaki 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).