Umikoa 118 Weather Records (USC00518780)

Record envelope, standing records and threshold days for Umikoa 118 (USC00518780), Hawaii, United States, with 56 years of record.

Key Facts for Umikoa 118

Umikoa 118 (USC00518780) is a weather station in Hawaii, United States at 19.98 latitude and -155.38 longitude, 1,043 m (3,422 ft) above sea level.
The station reports from 1921 to 1976, 56 years of record.
352 records set at Umikoa 118 still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Umikoa 118 set a daily record precipitation of 42.9 mm (1.7 in) on 7 January 1976.

About the Station

Location: Hawaii, United States, 19.98 latitude, -155.38 longitude.
Elevation: 1,043 m (3,422 ft).
Period of record: 1921 to 1976, 56 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Umikoa 118. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Umikoa 118, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	22.2 C (72.0 F)	7.8 C (46.0 F)	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	25.6 C (78.1 F)	9.4 C (48.9 F)	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	26.7 C (80.1 F)	10.0 C (50.0 F)	n/a	n/a
Nov	22.2 C (72.0 F)	7.8 C (46.0 F)	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

352 standing records

352 records at Umikoa 118 still stand. 1973 holds the most, with 100.

Wettest Day of Each Month

Nov: 380.2 mm (15.0 in)

The wettest day on record for each calendar month at Umikoa 118. The most was 380.2 mm (15.0 in) on 18 November 1929.

Record daily precipitation for each month at Umikoa 118
Month	Record daily precipitation (mm)	Date
Jan	279.4 mm (11.0 in)	8 January 1975
Feb	341.1 mm (13.4 in)	13 February 1960
Mar	304.5 mm (12.0 in)	13 March 1935
Apr	254.3 mm (10.0 in)	20 April 1950
May	124.0 mm (4.9 in)	10 May 1934
Jun	71.1 mm (2.8 in)	12 June 1969
Jul	220.0 mm (8.7 in)	17 July 1958
Aug	236.2 mm (9.3 in)	8 August 1958
Sep	96.8 mm (3.8 in)	8 September 1927
Oct	119.4 mm (4.7 in)	24 October 1957
Nov	380.2 mm (15.0 in)	18 November 1929
Dec	246.4 mm (9.7 in)	17 December 1923

Period of Record Coverage

1969 to 1975

4 years of record at Umikoa 118, 1969 to 1975. 4 years have data for under 90 percent of days and are left out of rankings: 1969, 1973, 1974, 1975.

Latest Records

Latest records at Umikoa 118
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 January 1976	Umikoa 118, US	daily rain	42.9 mm (1.7 in)	11.4 mm (0.4 in)	9 years	10 of 100 (Routine)
8 January 1975	Umikoa 118, US	monthly rain	279.4 mm (11.0 in)	41.9 mm (1.6 in)	48 years	43 of 100 (Notable)
12 November 1974	Umikoa 118, US	daily rain	70.9 mm (2.8 in)	8.9 mm (0.35 in)	1 year	7 of 100 (Routine)
17 April 1974	Umikoa 118, US	daily rain	80.8 mm (3.2 in)	39.7 mm (1.6 in)	11 years	21 of 100 (Routine)
5 February 1974	Umikoa 118, US	daily rain	27.4 mm (1.1 in)	15.5 mm (0.6 in)	16 years	14 of 100 (Routine)
24 January 1974	Umikoa 118, US	daily rain	85.6 mm (3.4 in)	36.1 mm (1.4 in)	16 years	21 of 100 (Routine)
29 November 1973	Umikoa 118, US	daily rain	23.9 mm (0.9 in)	2.8 mm (0.11 in)	12 years	8 of 100 (Routine)
13 November 1973	Umikoa 118, US	daily rain	304.8 mm (12.0 in)	230.6 mm (9.1 in)	24 years	52 of 100 (Notable)
19 May 1973	Umikoa 118, US	daily rain	30.0 mm (1.2 in)	18.3 mm (0.7 in)	19 years	23 of 100 (Routine)
31 March 1973	Umikoa 118, US	daily rain	55.6 mm (2.2 in)	31.2 mm (1.2 in)	39 years	25 of 100 (Routine)
17 March 1973	Umikoa 118, US	daily rain	56.9 mm (2.2 in)	11.7 mm (0.5 in)	50 years	23 of 100 (Routine)
7 March 1973	Umikoa 118, US	daily rain	94.7 mm (3.7 in)	43.1 mm (1.7 in)	18 years	22 of 100 (Routine)
12 November 1972	Umikoa 118, US	daily rain	62.0 mm (2.4 in)	16.0 mm (0.6 in)	44 years	22 of 100 (Routine)
18 August 1972	Umikoa 118, US	daily rain	183.4 mm (7.2 in)	20.8 mm (0.8 in)	49 years	27 of 100 (Routine)
29 June 1972	Umikoa 118, US	daily rain	6.9 mm (0.27 in)	3.1 mm (0.12 in)	37 years	20 of 100 (Routine)
28 June 1972	Umikoa 118, US	daily rain	9.7 mm (0.38 in)	4.4 mm (0.17 in)	3 years	11 of 100 (Routine)
10 April 1972	Umikoa 118, US	daily rain	144.0 mm (5.7 in)	104.4 mm (4.1 in)	48 years	54 of 100 (Notable)
30 July 1971	Umikoa 118, US	daily rain	24.9 mm (1.0 in)	5.3 mm (0.21 in)	20 years	13 of 100 (Routine)
20 January 1971	Umikoa 118, US	daily rain	30.2 mm (1.2 in)	5.3 mm (0.21 in)	19 years	11 of 100 (Routine)
18 January 1971	Umikoa 118, US	daily rain	35.1 mm (1.4 in)	7.9 mm (0.31 in)	12 years	10 of 100 (Routine)

Extremes by Year

1921 to 1976

Yearly extremes at Umikoa 118: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	26.7 C (80.1 F)	1973	23.9 C (75.0 F)	4
Coldest night (TNn)	7.8 C (46.0 F)	1969	8.6 C (47.5 F)	4
Wettest day (Rx1day)	380.2 mm (15.0 in)	1929	215.6 mm (8.5 in)	43
Wettest five days (Rx5day)	881.9 mm (34.7 in)	1921	307.1 mm (12.1 in)	42
Longest dry spell (CDD)	84 days	1921	21 days	43

Hottest day (TXx)

The hottest day of the year at Umikoa 118, 1921 to 1976. The record is 26.7 C (80.1 F) in 1973, marked on the chart; the median year is 23.9 C (75.0 F).

Hottest day (TXx) at Umikoa 118 by year
Year	Hottest day (TXx)
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	22.2 C (72.0 F)
1970	n/a
1971	n/a
1972	n/a
1973	26.7 C (80.1 F)
1974	25.6 C (78.1 F)
1975	22.2 C (72.0 F)
1976	n/a

Coldest night (TNn)

The coldest night of the year at Umikoa 118, 1921 to 1976. The record is 7.8 C (46.0 F) in 1969, marked on the chart; the median year is 8.6 C (47.5 F).

Coldest night (TNn) at Umikoa 118 by year
Year	Coldest night (TNn)
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	7.8 C (46.0 F)
1970	n/a
1971	n/a
1972	n/a
1973	10.0 C (50.0 F)
1974	9.4 C (48.9 F)
1975	7.8 C (46.0 F)
1976	n/a

Wettest day (Rx1day)

The wettest day of the year at Umikoa 118, 1921 to 1976. The record is 380.2 mm (15.0 in) in 1929, marked on the chart; the median year is 215.6 mm (8.5 in).

Wettest day (Rx1day) at Umikoa 118 by year
Year	Wettest day (Rx1day)
1921	306.3 mm (12.1 in)
1922	227.3 mm (8.9 in)
1923	246.4 mm (9.7 in)
1924	207.0 mm (8.1 in)
1925	215.6 mm (8.5 in)
1926	236.5 mm (9.3 in)
1927	237.5 mm (9.4 in)
1928	206.2 mm (8.1 in)
1929	380.2 mm (15.0 in)
1930	223.5 mm (8.8 in)
1931	244.6 mm (9.6 in)
1932	231.1 mm (9.1 in)
1933	282.4 mm (11.1 in)
1934	197.4 mm (7.8 in)
1935	304.5 mm (12.0 in)
1949	128.3 mm (5.1 in)
1950	254.3 mm (10.0 in)
1951	105.4 mm (4.1 in)
1952	240.3 mm (9.5 in)
1953	93.5 mm (3.7 in)
1954	178.6 mm (7.0 in)
1955	157.5 mm (6.2 in)
1956	170.4 mm (6.7 in)
1957	216.4 mm (8.5 in)
1958	236.2 mm (9.3 in)
1959	227.1 mm (8.9 in)
1960	341.1 mm (13.4 in)
1961	229.6 mm (9.0 in)
1962	142.2 mm (5.6 in)
1963	88.1 mm (3.5 in)
1964	234.4 mm (9.2 in)
1965	140.5 mm (5.5 in)
1966	67.6 mm (2.7 in)
1967	118.1 mm (4.6 in)
1968	91.4 mm (3.6 in)
1969	166.4 mm (6.6 in)
1970	193.0 mm (7.6 in)
1971	70.4 mm (2.8 in)
1972	183.4 mm (7.2 in)
1973	304.8 mm (12.0 in)
1974	156.0 mm (6.1 in)
1975	279.4 mm (11.0 in)
1976	42.9 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Umikoa 118, 1921 to 1976. The record is 881.9 mm (34.7 in) in 1921, marked on the chart; the median year is 307.1 mm (12.1 in).

Wettest five days (Rx5day) at Umikoa 118 by year
Year	Wettest five days (Rx5day)
1921	881.9 mm (34.7 in)
1922	591.3 mm (23.3 in)
1923	556.0 mm (21.9 in)
1924	333.6 mm (13.1 in)
1925	345.7 mm (13.6 in)
1926	285.6 mm (11.2 in)
1927	369.8 mm (14.6 in)
1928	381.1 mm (15.0 in)
1929	522.2 mm (20.6 in)
1930	259.8 mm (10.2 in)
1931	276.4 mm (10.9 in)
1932	231.1 mm (9.1 in)
1933	388.8 mm (15.3 in)
1934	284.7 mm (11.2 in)
1935	306.8 mm (12.1 in)
1949	289.1 mm (11.4 in)
1950	419.0 mm (16.5 in)
1951	226.6 mm (8.9 in)
1952	355.6 mm (14.0 in)
1953	129.3 mm (5.1 in)
1954	555.3 mm (21.9 in)
1955	500.2 mm (19.7 in)
1956	304.5 mm (12.0 in)
1957	354.8 mm (14.0 in)
1958	288.7 mm (11.4 in)
1959	449.9 mm (17.7 in)
1960	641.3 mm (25.2 in)
1961	345.4 mm (13.6 in)
1962	198.9 mm (7.8 in)
1963	101.1 mm (4.0 in)
1964	307.3 mm (12.1 in)
1965	209.0 mm (8.2 in)
1966	128.1 mm (5.0 in)
1967	170.2 mm (6.7 in)
1968	198.4 mm (7.8 in)
1969	336.8 mm (13.3 in)
1970	433.0 mm (17.0 in)
1971	140.2 mm (5.5 in)
1972	274.9 mm (10.8 in)
1973	308.2 mm (12.1 in)
1974	193.0 mm (7.6 in)
1975	12.2 mm (0.5 in)
1976	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Umikoa 118, 1921 to 1976. The record is 84 days in 1921, marked on the chart; the median year is 21 days.

Longest dry spell (CDD) at Umikoa 118 by year
Year	Longest dry spell (CDD)
1921	84 days
1922	43 days
1923	21 days
1924	25 days
1925	17 days
1926	25 days
1927	21 days
1928	26 days
1929	34 days
1930	17 days
1931	27 days
1932	32 days
1933	22 days
1934	26 days
1935	23 days
1949	9 days
1950	22 days
1951	15 days
1952	22 days
1953	18 days
1954	27 days
1955	29 days
1956	23 days
1957	19 days
1958	11 days
1959	19 days
1960	16 days
1961	17 days
1962	21 days
1963	17 days
1964	15 days
1965	21 days
1966	25 days
1967	18 days
1968	22 days
1969	14 days
1970	16 days
1971	18 days
1972	18 days
1973	15 days
1974	23 days
1975	39 days
1976	1 day

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.

Download the Data

Data for Umikoa 118 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Umikoa 118 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).