Kualapuu 534 Weather Records (USC00514778)

Record envelope, standing records and threshold days for Kualapuu 534 (USC00514778), Hawaii, United States, with 74 years of record.

Key Facts for Kualapuu 534

Kualapuu 534 (USC00514778) is a weather station in Hawaii, United States at 21.15 latitude and -157.04 longitude, 267 m (877 ft) above sea level.
The station reports from 1905 to 1978, 74 years of record.
1,464 records set at Kualapuu 534 still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Kualapuu 534 set a daily record precipitation of 7.1 mm (0.28 in) on 12 August 1977.

About the Station

Location: Hawaii, United States, 21.15 latitude, -157.04 longitude.
Elevation: 267 m (877 ft).
Period of record: 1905 to 1978, 74 years.
Eligible elements: tmax, tmin, prcp, snow.

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 Kualapuu 534. 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 Kualapuu 534, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.7 C (89.1 F)	10.6 C (51.1 F)	n/a	n/a
Feb	31.1 C (88.0 F)	10.0 C (50.0 F)	n/a	n/a
Mar	33.3 C (91.9 F)	11.1 C (52.0 F)	n/a	n/a
Apr	31.7 C (89.1 F)	11.1 C (52.0 F)	n/a	n/a
May	32.8 C (91.0 F)	11.7 C (53.1 F)	n/a	n/a
Jun	34.4 C (93.9 F)	10.6 C (51.1 F)	n/a	n/a
Jul	33.9 C (93.0 F)	11.7 C (53.1 F)	n/a	n/a
Aug	35.0 C (95.0 F)	15.6 C (60.1 F)	n/a	n/a
Sep	34.4 C (93.9 F)	15.6 C (60.1 F)	n/a	n/a
Oct	33.3 C (91.9 F)	13.9 C (57.0 F)	n/a	n/a
Nov	33.3 C (91.9 F)	11.1 C (52.0 F)	n/a	n/a
Dec	33.9 C (93.0 F)	9.4 C (48.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Kualapuu 534 still stand. 1916 holds the most, with 111.

Standing records at Kualapuu 534 by the year they were set
Year set	Standing records
1905	8
1906	29
1907	38
1908	30
1909	31
1910	31
1911	49
1912	48
1913	28
1914	31
1915	95
1916	111
1917	3
1918	21
1919	9
1920	9
1921	18
1922	15
1923	26
1924	43
1925	49
1926	52
1927	38
1928	32
1929	25
1930	53
1931	39
1932	27
1933	19
1934	30
1935	28
1936	31
1937	19
1938	31
1939	12
1940	33
1941	17
1942	30
1943	29
1944	21
1945	23
1946	11
1947	11
1948	6
1949	9
1950	15
1951	50
1952	29
1953	7
1954	13
1977	2

All-Time Record Progression

1 new records

1 all-time records were set at Kualapuu 534 between 20 August 1951 and 20 August 1951. Each dot is a new record.

Wettest Day of Each Month

Jan: 224.8 mm (8.9 in)

The wettest day on record for each calendar month at Kualapuu 534. The most was 224.8 mm (8.9 in) on 19 January 1916.

Record daily precipitation for each month at Kualapuu 534
Month	Record daily precipitation (mm)	Date
Jan	224.8 mm (8.9 in)	19 January 1916
Feb	117.3 mm (4.6 in)	25 February 1930
Mar	164.1 mm (6.5 in)	14 March 1951
Apr	149.1 mm (5.9 in)	9 April 1938
May	76.7 mm (3.0 in)	11 May 1940
Jun	48.3 mm (1.9 in)	27 June 1916
Jul	37.1 mm (1.5 in)	5 July 1968
Aug	62.7 mm (2.5 in)	18 August 1938
Sep	41.7 mm (1.6 in)	11 September 1922
Oct	142.2 mm (5.6 in)	31 October 1961
Nov	159.5 mm (6.3 in)	18 November 1930
Dec	159.5 mm (6.3 in)	13 December 1906

Period of Record Coverage

1905 to 1977

54 years of record at Kualapuu 534, 1905 to 1977. 22 years have data for under 90 percent of days and are left out of rankings: 1905, 1906, 1908, 1909, 1912, 1915, 1916, 1917 and others.

Days with data per year at Kualapuu 534
Year	Days with data	Share of year	Complete
1905	220	60%	No
1906	316	87%	No
1907	361	99%	Yes
1908	328	90%	No
1909	283	78%	No
1910	352	96%	Yes
1911	358	98%	Yes
1912	317	87%	No
1913	361	99%	Yes
1914	365	100%	Yes
1915	268	73%	No
1916	300	82%	No
1917	181	50%	No
1918	365	100%	Yes
1919	363	99%	Yes
1920	363	99%	Yes
1921	362	99%	Yes
1922	293	80%	No
1923	261	72%	No
1924	356	97%	Yes
1925	346	95%	Yes
1926	349	96%	Yes
1927	297	81%	No
1928	356	97%	Yes
1929	331	91%	Yes
1930	364	100%	Yes
1931	361	99%	Yes
1932	356	97%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	364	99%	Yes
1937	291	80%	No
1938	365	100%	Yes
1939	361	99%	Yes
1940	363	99%	Yes
1941	364	100%	Yes
1942	351	96%	Yes
1943	322	88%	No
1944	364	99%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	363	99%	Yes
1949	356	98%	Yes
1950	311	85%	No
1951	307	84%	No
1952	303	83%	No
1953	285	78%	No
1954	268	73%	No
1970	2	1%	No
1971	20	5%	No
1975	21	6%	No
1977	18	5%	No

Latest Records

Latest records at Kualapuu 534
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 August 1977	Kualapuu 534, US	daily rain	7.1 mm (0.28 in)	2.8 mm (0.11 in)	67 years	20 of 100 (Routine)
17 June 1977	Kualapuu 534, US	daily rain	6.4 mm (0.25 in)	2.1 mm (0.08 in)	63 years	20 of 100 (Routine)
13 May 1977	Kualapuu 534, US	daily rain	46.5 mm (1.8 in)	31.0 mm (1.2 in)	16 years	51 of 100 (Notable)
24 February 1977	Kualapuu 534, US	daily high min (Tie)	18.9 C (66.0 F)	tie	45 years	5 of 100 (Routine)
23 February 1977	Kualapuu 534, US	daily high min	19.4 C (66.9 F)	0.5 C (0.9 F)	42 years	22 of 100 (Routine)
22 February 1977	Kualapuu 534, US	daily high min	19.4 C (66.9 F)	0.5 C (0.9 F)	56 years	26 of 100 (Routine)
7 February 1977	Kualapuu 534, US	daily high max (Tie)	28.3 C (82.9 F)	tie	52 years	5 of 100 (Routine)
7 February 1977	Kualapuu 534, US	daily high min (Tie)	18.9 C (66.0 F)	tie	32 years	4 of 100 (Routine)
30 September 1976	Kualapuu 534, US	daily rain	20.6 mm (0.8 in)	13.2 mm (0.5 in)	46 years	20 of 100 (Routine)
1 September 1976	Kualapuu 534, US	daily rain	9.4 mm (0.37 in)	6.9 mm (0.27 in)	57 years	20 of 100 (Routine)
17 August 1976	Kualapuu 534, US	daily rain	13.7 mm (0.5 in)	7.9 mm (0.31 in)	20 years	20 of 100 (Routine)
6 August 1976	Kualapuu 534, US	daily rain	4.3 mm (0.17 in)	0.5 mm (0.02 in)	40 years	19 of 100 (Routine)
5 March 1976	Kualapuu 534, US	daily rain	77.0 mm (3.0 in)	14.0 mm (0.6 in)	18 years	21 of 100 (Routine)
29 February 1976	Kualapuu 534, US	daily rain	2.5 mm (0.10 in)	1.7 mm (0.07 in)	52 years	20 of 100 (Routine)
18 July 1975	Kualapuu 534, US	daily rain	16.0 mm (0.6 in)	7.6 mm (0.30 in)	16 years	20 of 100 (Routine)
16 October 1974	Kualapuu 534, US	daily rain	18.3 mm (0.7 in)	4.1 mm (0.16 in)	20 years	16 of 100 (Routine)
17 July 1974	Kualapuu 534, US	daily rain	7.4 mm (0.29 in)	1.0 mm (0.04 in)	16 years	13 of 100 (Routine)
16 May 1974	Kualapuu 534, US	daily rain	18.0 mm (0.7 in)	11.1 mm (0.4 in)	55 years	20 of 100 (Routine)
13 March 1974	Kualapuu 534, US	daily rain	70.6 mm (2.8 in)	45.5 mm (1.8 in)	32 years	48 of 100 (Notable)
5 September 1973	Kualapuu 534, US	daily rain	13.2 mm (0.5 in)	5.6 mm (0.22 in)	64 years	20 of 100 (Routine)

Climate Trend

31 complete years, 1907 to 1951

One stripe for each of 31 complete years at Kualapuu 534, 1907 to 1951. Blue stripes are years cooler than the station's own mean of 22.5 C (72.5 F); red stripes are warmer. The coolest year was 1924, at 21.3 C (70.4 F), and the warmest was 1945, at 23.2 C (73.8 F). The strongest colour marks a difference of 1.2 C (2.2 F).

Annual mean temperature at Kualapuu 534 as warming stripes, 1907 to 1951
Year	Annual mean temperature	Difference from the station mean
1907	21.9 C	-0.61 C
1910	22.7 C	+0.20 C
1911	23.0 C	+0.48 C
1913	22.5 C	-0.04 C
1914	22.7 C	+0.21 C
1918	22.1 C	-0.39 C
1919	22.3 C	-0.23 C
1920	22.5 C	+0.04 C
1921	21.8 C	-0.66 C
1924	21.3 C	-1.17 C
1926	21.6 C	-0.94 C
1928	23.2 C	+0.67 C
1930	22.9 C	+0.39 C
1931	22.4 C	-0.09 C
1932	22.5 C	-0.03 C
1933	22.4 C	-0.13 C
1934	23.0 C	+0.49 C
1935	22.9 C	+0.38 C
1936	22.6 C	+0.11 C
1938	22.8 C	+0.32 C
1939	22.3 C	-0.17 C
1940	23.0 C	+0.52 C
1941	22.6 C	+0.14 C
1944	22.9 C	+0.39 C
1945	23.2 C	+0.73 C
1946	22.8 C	+0.34 C
1947	22.5 C	+0.04 C
1948	22.3 C	-0.21 C
1949	22.0 C	-0.48 C
1950	22.2 C	-0.32 C
1951	22.5 C	+0.04 C

The fitted trend in annual mean temperature here over 1907 to 1951 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 0.4) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Kualapuu 534
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 0.4) per decade	1907 to 1951	31	Not clearly different from zero
Mean daily maximum	0.16 C (-0.02 to 0.34) per decade	0.30 F (-0.03 to 0.62) per decade	1907 to 1951	31	Not clearly different from zero
Mean daily minimum	-0.02 C (-0.27 to 0.22) per decade	-0.04 F (-0.48 to 0.39) per decade	1907 to 1951	31	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

1905 to 1978

Yearly extremes at Kualapuu 534: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.0 C (95.0 F)	1951	32.8 C (91.0 F)	54
Coldest night (TNn)	9.4 C (48.9 F)	1921	12.2 C (54.0 F)	54
Wettest day (Rx1day)	224.8 mm (8.9 in)	1916	71.1 mm (2.8 in)	74
Wettest five days (Rx5day)	369.6 mm (14.6 in)	1916	99.1 mm (3.9 in)	74
Longest dry spell (CDD)	49 days	1930	26 days	74

Hottest day (TXx)

The hottest day of the year at Kualapuu 534, 1905 to 1978. The record is 35.0 C (95.0 F) in 1951, marked on the chart; the median year is 32.8 C (91.0 F).

Hottest day (TXx) at Kualapuu 534 by year
Year	Hottest day (TXx)
1905	31.7 C (89.1 F)
1906	31.7 C (89.1 F)
1907	31.1 C (88.0 F)
1908	32.2 C (90.0 F)
1909	33.3 C (91.9 F)
1910	33.9 C (93.0 F)
1911	33.9 C (93.0 F)
1912	32.8 C (91.0 F)
1913	32.8 C (91.0 F)
1914	34.4 C (93.9 F)
1915	31.1 C (88.0 F)
1916	29.4 C (84.9 F)
1917	30.6 C (87.1 F)
1918	32.2 C (90.0 F)
1919	32.8 C (91.0 F)
1920	32.2 C (90.0 F)
1921	33.9 C (93.0 F)
1922	31.1 C (88.0 F)
1923	32.2 C (90.0 F)
1924	32.2 C (90.0 F)
1925	33.3 C (91.9 F)
1926	32.2 C (90.0 F)
1927	32.2 C (90.0 F)
1928	33.9 C (93.0 F)
1929	33.9 C (93.0 F)
1930	33.3 C (91.9 F)
1931	32.2 C (90.0 F)
1932	32.8 C (91.0 F)
1933	33.3 C (91.9 F)
1934	33.3 C (91.9 F)
1935	33.3 C (91.9 F)
1936	33.3 C (91.9 F)
1937	31.7 C (89.1 F)
1938	32.2 C (90.0 F)
1939	32.8 C (91.0 F)
1940	31.7 C (89.1 F)
1941	33.3 C (91.9 F)
1942	33.9 C (93.0 F)
1943	33.9 C (93.0 F)
1944	32.8 C (91.0 F)
1945	33.3 C (91.9 F)
1946	34.4 C (93.9 F)
1947	32.8 C (91.0 F)
1948	32.2 C (90.0 F)
1949	32.2 C (90.0 F)
1950	33.3 C (91.9 F)
1951	35.0 C (95.0 F)
1952	33.9 C (93.0 F)
1953	32.8 C (91.0 F)
1954	32.8 C (91.0 F)
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	n/a
1970	28.3 C (82.9 F)
1971	30.0 C (86.0 F)
1972	n/a
1973	n/a
1974	n/a
1975	29.4 C (84.9 F)
1976	n/a
1977	28.9 C (84.0 F)
1978	n/a

Coldest night (TNn)

The coldest night of the year at Kualapuu 534, 1905 to 1978. The record is 9.4 C (48.9 F) in 1921, marked on the chart; the median year is 12.2 C (54.0 F).

Coldest night (TNn) at Kualapuu 534 by year
Year	Coldest night (TNn)
1905	14.4 C (57.9 F)
1906	12.2 C (54.0 F)
1907	13.3 C (55.9 F)
1908	11.1 C (52.0 F)
1909	10.6 C (51.1 F)
1910	12.8 C (55.0 F)
1911	12.2 C (54.0 F)
1912	11.1 C (52.0 F)
1913	13.3 C (55.9 F)
1914	12.2 C (54.0 F)
1915	11.7 C (53.1 F)
1916	12.2 C (54.0 F)
1917	10.6 C (51.1 F)
1918	12.8 C (55.0 F)
1919	12.8 C (55.0 F)
1920	13.9 C (57.0 F)
1921	9.4 C (48.9 F)
1922	11.1 C (52.0 F)
1923	11.7 C (53.1 F)
1924	10.6 C (51.1 F)
1925	11.7 C (53.1 F)
1926	11.1 C (52.0 F)
1927	10.0 C (50.0 F)
1928	11.7 C (53.1 F)
1929	12.8 C (55.0 F)
1930	10.6 C (51.1 F)
1931	12.2 C (54.0 F)
1932	11.1 C (52.0 F)
1933	12.2 C (54.0 F)
1934	12.8 C (55.0 F)
1935	11.7 C (53.1 F)
1936	13.3 C (55.9 F)
1937	11.1 C (52.0 F)
1938	13.9 C (57.0 F)
1939	14.4 C (57.9 F)
1940	12.2 C (54.0 F)
1941	12.8 C (55.0 F)
1942	12.2 C (54.0 F)
1943	10.6 C (51.1 F)
1944	12.8 C (55.0 F)
1945	13.9 C (57.0 F)
1946	11.7 C (53.1 F)
1947	11.7 C (53.1 F)
1948	11.1 C (52.0 F)
1949	10.6 C (51.1 F)
1950	12.2 C (54.0 F)
1951	10.0 C (50.0 F)
1952	11.7 C (53.1 F)
1953	13.3 C (55.9 F)
1954	12.8 C (55.0 F)
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	n/a
1970	20.0 C (68.0 F)
1971	17.2 C (63.0 F)
1972	n/a
1973	n/a
1974	n/a
1975	15.6 C (60.1 F)
1976	n/a
1977	15.6 C (60.1 F)
1978	n/a

Wettest day (Rx1day)

The wettest day of the year at Kualapuu 534, 1905 to 1978. The record is 224.8 mm (8.9 in) in 1916, marked on the chart; the median year is 71.1 mm (2.8 in).

Wettest day (Rx1day) at Kualapuu 534 by year
Year	Wettest day (Rx1day)
1905	43.9 mm (1.7 in)
1906	159.5 mm (6.3 in)
1907	108.7 mm (4.3 in)
1908	61.0 mm (2.4 in)
1909	75.7 mm (3.0 in)
1910	58.4 mm (2.3 in)
1911	83.8 mm (3.3 in)
1912	37.8 mm (1.5 in)
1913	68.8 mm (2.7 in)
1914	58.4 mm (2.3 in)
1915	45.7 mm (1.8 in)
1916	224.8 mm (8.9 in)
1917	78.7 mm (3.1 in)
1918	85.3 mm (3.4 in)
1919	80.0 mm (3.1 in)
1920	67.6 mm (2.7 in)
1921	77.5 mm (3.1 in)
1922	52.1 mm (2.1 in)
1923	127.0 mm (5.0 in)
1924	87.6 mm (3.4 in)
1925	73.7 mm (2.9 in)
1926	35.1 mm (1.4 in)
1927	99.8 mm (3.9 in)
1928	40.1 mm (1.6 in)
1929	200.7 mm (7.9 in)
1930	159.5 mm (6.3 in)
1931	59.7 mm (2.4 in)
1932	71.6 mm (2.8 in)
1933	86.9 mm (3.4 in)
1934	64.0 mm (2.5 in)
1935	40.9 mm (1.6 in)
1936	58.2 mm (2.3 in)
1937	106.2 mm (4.2 in)
1938	149.1 mm (5.9 in)
1939	99.8 mm (3.9 in)
1940	79.5 mm (3.1 in)
1941	57.9 mm (2.3 in)
1942	130.0 mm (5.1 in)
1943	88.9 mm (3.5 in)
1944	69.1 mm (2.7 in)
1945	93.5 mm (3.7 in)
1946	59.7 mm (2.4 in)
1947	40.6 mm (1.6 in)
1948	95.5 mm (3.8 in)
1949	67.3 mm (2.6 in)
1950	127.0 mm (5.0 in)
1951	164.1 mm (6.5 in)
1952	144.3 mm (5.7 in)
1953	35.1 mm (1.4 in)
1954	57.4 mm (2.3 in)
1955	133.9 mm (5.3 in)
1956	134.1 mm (5.3 in)
1957	68.3 mm (2.7 in)
1958	75.4 mm (3.0 in)
1959	62.2 mm (2.4 in)
1960	46.7 mm (1.8 in)
1961	142.2 mm (5.6 in)
1962	58.4 mm (2.3 in)
1963	67.1 mm (2.6 in)
1964	64.8 mm (2.6 in)
1965	139.4 mm (5.5 in)
1966	62.5 mm (2.5 in)
1967	87.9 mm (3.5 in)
1968	78.7 mm (3.1 in)
1969	91.7 mm (3.6 in)
1970	32.3 mm (1.3 in)
1971	38.9 mm (1.5 in)
1972	48.3 mm (1.9 in)
1973	20.1 mm (0.8 in)
1974	70.6 mm (2.8 in)
1975	32.8 mm (1.3 in)
1976	77.0 mm (3.0 in)
1977	46.5 mm (1.8 in)
1978	25.9 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Kualapuu 534, 1905 to 1978. The record is 369.6 mm (14.6 in) in 1916, marked on the chart; the median year is 99.1 mm (3.9 in).

Wettest five days (Rx5day) at Kualapuu 534 by year
Year	Wettest five days (Rx5day)
1905	50.3 mm (2.0 in)
1906	259.4 mm (10.2 in)
1907	259.8 mm (10.2 in)
1908	29.4 mm (1.2 in)
1909	138.7 mm (5.5 in)
1910	82.8 mm (3.3 in)
1911	172.7 mm (6.8 in)
1912	55.0 mm (2.2 in)
1913	99.1 mm (3.9 in)
1914	68.8 mm (2.7 in)
1915	86.3 mm (3.4 in)
1916	369.6 mm (14.6 in)
1917	139.7 mm (5.5 in)
1918	146.4 mm (5.8 in)
1919	83.8 mm (3.3 in)
1920	158.8 mm (6.3 in)
1921	174.3 mm (6.9 in)
1922	66.0 mm (2.6 in)
1923	198.1 mm (7.8 in)
1924	101.6 mm (4.0 in)
1925	95.8 mm (3.8 in)
1926	78.0 mm (3.1 in)
1927	210.1 mm (8.3 in)
1928	58.4 mm (2.3 in)
1929	236.3 mm (9.3 in)
1930	192.8 mm (7.6 in)
1931	95.5 mm (3.8 in)
1932	136.8 mm (5.4 in)
1933	196.2 mm (7.7 in)
1934	74.2 mm (2.9 in)
1935	67.2 mm (2.6 in)
1936	89.8 mm (3.5 in)
1937	270.2 mm (10.6 in)
1938	250.5 mm (9.9 in)
1939	204.4 mm (8.0 in)
1940	125.0 mm (4.9 in)
1941	109.5 mm (4.3 in)
1942	224.5 mm (8.8 in)
1943	158.5 mm (6.2 in)
1944	111.0 mm (4.4 in)
1945	188.4 mm (7.4 in)
1946	136.5 mm (5.4 in)
1947	89.7 mm (3.5 in)
1948	247.2 mm (9.7 in)
1949	99.0 mm (3.9 in)
1950	217.7 mm (8.6 in)
1951	196.3 mm (7.7 in)
1952	148.4 mm (5.8 in)
1953	35.9 mm (1.4 in)
1954	73.0 mm (2.9 in)
1955	214.2 mm (8.4 in)
1956	136.6 mm (5.4 in)
1957	83.8 mm (3.3 in)
1958	71.1 mm (2.8 in)
1959	62.5 mm (2.5 in)
1960	47.5 mm (1.9 in)
1961	325.8 mm (12.8 in)
1962	24.4 mm (1.0 in)
1963	74.0 mm (2.9 in)
1964	44.4 mm (1.7 in)
1965	82.3 mm (3.2 in)
1966	95.3 mm (3.8 in)
1967	113.3 mm (4.5 in)
1968	91.1 mm (3.6 in)
1969	131.3 mm (5.2 in)
1970	52.8 mm (2.1 in)
1971	70.4 mm (2.8 in)
1972	101.4 mm (4.0 in)
1973	21.6 mm (0.9 in)
1974	75.3 mm (3.0 in)
1975	18.0 mm (0.7 in)
1976	95.6 mm (3.8 in)
1977	47.3 mm (1.9 in)
1978	11.7 mm (0.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Kualapuu 534, 1905 to 1978. The record is 49 days in 1930, marked on the chart; the median year is 26 days.

Longest dry spell (CDD) at Kualapuu 534 by year
Year	Longest dry spell (CDD)
1905	21 days
1906	30 days
1907	22 days
1908	30 days
1909	30 days
1910	18 days
1911	19 days
1912	21 days
1913	19 days
1914	23 days
1915	26 days
1916	42 days
1917	15 days
1918	26 days
1919	31 days
1920	29 days
1921	25 days
1922	30 days
1923	35 days
1924	29 days
1925	26 days
1926	27 days
1927	16 days
1928	45 days
1929	29 days
1930	49 days
1931	16 days
1932	24 days
1933	28 days
1934	16 days
1935	19 days
1936	17 days
1937	27 days
1938	26 days
1939	22 days
1940	29 days
1941	29 days
1942	32 days
1943	27 days
1944	34 days
1945	37 days
1946	20 days
1947	38 days
1948	31 days
1949	29 days
1950	25 days
1951	24 days
1952	29 days
1953	26 days
1954	17 days
1955	30 days
1956	24 days
1957	26 days
1958	14 days
1959	25 days
1960	17 days
1961	30 days
1962	23 days
1963	17 days
1964	17 days
1965	14 days
1966	17 days
1967	27 days
1968	29 days
1969	15 days
1970	38 days
1971	20 days
1972	28 days
1973	17 days
1974	25 days
1975	25 days
1976	18 days
1977	19 days
1978	17 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

36 years, 1909 to 1956

A day with at least 74.9 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 218.3 mm (8.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Kualapuu 534: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	74.9 mm (2.9 in)
5 years	106.4 mm (4.2 in)
10 years	129.8 mm (5.1 in)
25 years	162.5 mm (6.4 in)
50 years	189.3 mm (7.5 in)	Longer than the 36 years of record
100 years	218.3 mm (8.6 in)	Longer than the 36 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, 36 years of values from 1909 to 1956.

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: 200.7 mm (7.9 in) in 1929; 159.5 mm (6.3 in) in 1930; 149.1 mm (5.9 in) in 1938.

Download the Data

Data for Kualapuu 534 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kualapuu 534 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).