Record envelope, standing records and threshold days for Wailuku 386 (USC00519484), Hawaii, United States, with 54 years of record.
Key Facts for Wailuku 386
Wailuku 386 (USC00519484) is a weather station in Hawaii, United States at 20.90 latitude and -156.52 longitude, 165 m (540 ft) above sea level.
The station reports from 1949 to 2002, 54 years of record.
1,464 records set at Wailuku 386 still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Wailuku 386 set a daily record precipitation of 14.0 mm (0.6 in) on 27 July 2002.
About the Station
Location: Hawaii, United States, 20.90 latitude, -156.52 longitude.
Elevation: 165 m (540 ft).
Period of record: 1949 to 2002, 54 years.
Eligible elements: prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Wailuku 386. 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 Wailuku 386, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.1 C (88.0 F)
10.0 C (50.0 F)
n/a
n/a
Feb
30.6 C (87.1 F)
12.8 C (55.0 F)
n/a
n/a
Mar
31.1 C (88.0 F)
12.8 C (55.0 F)
n/a
n/a
Apr
31.1 C (88.0 F)
13.9 C (57.0 F)
n/a
n/a
May
32.2 C (90.0 F)
15.6 C (60.1 F)
n/a
n/a
Jun
32.2 C (90.0 F)
16.7 C (62.1 F)
n/a
n/a
Jul
32.8 C (91.0 F)
17.2 C (63.0 F)
n/a
n/a
Aug
32.2 C (90.0 F)
16.7 C (62.1 F)
n/a
n/a
Sep
33.3 C (91.9 F)
16.7 C (62.1 F)
n/a
n/a
Oct
33.3 C (91.9 F)
14.4 C (57.9 F)
n/a
n/a
Nov
34.4 C (93.9 F)
13.9 C (57.0 F)
n/a
n/a
Dec
31.7 C (89.1 F)
11.1 C (52.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Wailuku 386 still stand. 1968 holds the most, with 165.
Standing records at Wailuku 386 by the year they were set
Year set
Standing records
1949
32
1950
90
1951
56
1952
68
1953
36
1954
74
1955
102
1956
30
1957
61
1958
63
1959
64
1960
42
1961
57
1962
32
1963
42
1964
35
1965
50
1966
38
1967
66
1968
165
1969
49
1970
31
1971
23
1972
38
1973
23
1974
21
1975
19
1976
23
1977
25
1978
9
Wettest Day of Each Month
Dec: 308.4 mm (12.1 in)
The wettest day on record for each calendar month at Wailuku 386. The most was 308.4 mm (12.1 in) on 20 December 1955.
Record daily precipitation for each month at Wailuku 386
Month
Record daily precipitation (mm)
Date
Jan
247.4 mm (9.7 in)
9 January 1980
Feb
170.4 mm (6.7 in)
25 February 1972
Mar
158.2 mm (6.2 in)
6 March 1989
Apr
190.5 mm (7.5 in)
5 April 1989
May
194.3 mm (7.6 in)
6 May 1987
Jun
50.0 mm (2.0 in)
25 June 1994
Jul
37.6 mm (1.5 in)
28 July 1993
Aug
41.4 mm (1.6 in)
15 August 1950
Sep
50.8 mm (2.0 in)
20 September 1991
Oct
96.0 mm (3.8 in)
18 October 1985
Nov
146.3 mm (5.8 in)
12 November 1965
Dec
308.4 mm (12.1 in)
20 December 1955
Period of Record Coverage
1949 to 1978
Complete yearUnder 90 percent of days
30 years of record at Wailuku 386, 1949 to 1978. 16 years have data for under 90 percent of days and are left out of rankings: 1949, 1961, 1962, 1964, 1966, 1967, 1969, 1970 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 14 complete years at Wailuku 386, 1950 to 1968. Blue stripes are years cooler than the station's own mean of 23.7 C (74.6 F); red stripes are warmer. The coolest year was 1955, at 22.8 C (73.0 F), and the warmest was 1968, at 24.8 C (76.6 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Wailuku 386 as warming stripes, 1950 to 1968
Year
Annual mean temperature
Difference from the station mean
1950
23.2 C
-0.44 C
1951
23.7 C
+0.07 C
1952
23.1 C
-0.61 C
1953
23.5 C
-0.13 C
1954
23.7 C
+0.03 C
1955
22.8 C
-0.90 C
1956
23.5 C
-0.12 C
1957
23.7 C
+0.04 C
1958
23.5 C
-0.21 C
1959
24.0 C
+0.36 C
1960
24.0 C
+0.37 C
1963
24.1 C
+0.43 C
1965
23.6 C
-0.02 C
1968
24.8 C
+1.12 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
1949 to 2002
Yearly extremes at Wailuku 386: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
34.4 C (93.9 F)
1950
31.7 C (89.1 F)
30
Coldest night (TNn)
10.0 C (50.0 F)
1972
13.9 C (57.0 F)
30
Wettest day (Rx1day)
308.4 mm (12.1 in)
1955
89.7 mm (3.5 in)
54
Wettest five days (Rx5day)
534.1 mm (21.0 in)
1980
130.9 mm (5.2 in)
54
Longest dry spell (CDD)
79 days
1984
32 days
54
Hottest day (TXx)
The hottest day of the year at Wailuku 386, 1949 to 2002. The record is 34.4 C (93.9 F) in 1950, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Wailuku 386 by year
Year
Hottest day (TXx)
1949
30.6 C (87.1 F)
1950
34.4 C (93.9 F)
1951
31.7 C (89.1 F)
1952
31.7 C (89.1 F)
1953
30.6 C (87.1 F)
1954
32.2 C (90.0 F)
1955
30.0 C (86.0 F)
1956
31.1 C (88.0 F)
1957
32.2 C (90.0 F)
1958
32.2 C (90.0 F)
1959
32.2 C (90.0 F)
1960
32.8 C (91.0 F)
1961
32.2 C (90.0 F)
1962
32.2 C (90.0 F)
1963
31.7 C (89.1 F)
1964
31.1 C (88.0 F)
1965
32.2 C (90.0 F)
1966
33.3 C (91.9 F)
1967
32.2 C (90.0 F)
1968
33.3 C (91.9 F)
1969
32.2 C (90.0 F)
1970
30.6 C (87.1 F)
1971
31.7 C (89.1 F)
1972
31.7 C (89.1 F)
1973
31.1 C (88.0 F)
1974
31.1 C (88.0 F)
1975
30.0 C (86.0 F)
1976
31.7 C (89.1 F)
1977
31.7 C (89.1 F)
1978
30.6 C (87.1 F)
1979
n/a
1980
n/a
1981
n/a
1982
n/a
1983
n/a
1984
n/a
1985
n/a
1986
n/a
1987
n/a
1988
n/a
1989
n/a
1990
n/a
1991
n/a
1992
n/a
1993
n/a
1994
n/a
1995
n/a
1996
n/a
1997
n/a
1998
n/a
1999
n/a
2000
n/a
2001
n/a
2002
n/a
Coldest night (TNn)
The coldest night of the year at Wailuku 386, 1949 to 2002. The record is 10.0 C (50.0 F) in 1972, marked on the chart; the median year is 13.9 C (57.0 F).
Coldest night (TNn) at Wailuku 386 by year
Year
Coldest night (TNn)
1949
12.8 C (55.0 F)
1950
14.4 C (57.9 F)
1951
13.3 C (55.9 F)
1952
13.9 C (57.0 F)
1953
12.8 C (55.0 F)
1954
13.9 C (57.0 F)
1955
13.3 C (55.9 F)
1956
13.9 C (57.0 F)
1957
14.4 C (57.9 F)
1958
12.8 C (55.0 F)
1959
15.0 C (59.0 F)
1960
13.9 C (57.0 F)
1961
15.0 C (59.0 F)
1962
12.8 C (55.0 F)
1963
14.4 C (57.9 F)
1964
16.1 C (61.0 F)
1965
14.4 C (57.9 F)
1966
14.4 C (57.9 F)
1967
13.3 C (55.9 F)
1968
12.2 C (54.0 F)
1969
13.3 C (55.9 F)
1970
13.3 C (55.9 F)
1971
11.1 C (52.0 F)
1972
10.0 C (50.0 F)
1973
13.9 C (57.0 F)
1974
15.0 C (59.0 F)
1975
14.4 C (57.9 F)
1976
13.3 C (55.9 F)
1977
15.0 C (59.0 F)
1978
13.9 C (57.0 F)
1979
n/a
1980
n/a
1981
n/a
1982
n/a
1983
n/a
1984
n/a
1985
n/a
1986
n/a
1987
n/a
1988
n/a
1989
n/a
1990
n/a
1991
n/a
1992
n/a
1993
n/a
1994
n/a
1995
n/a
1996
n/a
1997
n/a
1998
n/a
1999
n/a
2000
n/a
2001
n/a
2002
n/a
Wettest day (Rx1day)
The wettest day of the year at Wailuku 386, 1949 to 2002. The record is 308.4 mm (12.1 in) in 1955, marked on the chart; the median year is 89.7 mm (3.5 in).
Wettest day (Rx1day) at Wailuku 386 by year
Year
Wettest day (Rx1day)
1949
9.9 mm (0.39 in)
1950
111.8 mm (4.4 in)
1951
142.5 mm (5.6 in)
1952
119.4 mm (4.7 in)
1953
32.8 mm (1.3 in)
1954
76.2 mm (3.0 in)
1955
308.4 mm (12.1 in)
1956
70.4 mm (2.8 in)
1957
48.3 mm (1.9 in)
1958
54.1 mm (2.1 in)
1959
103.9 mm (4.1 in)
1960
40.6 mm (1.6 in)
1961
124.5 mm (4.9 in)
1962
85.1 mm (3.4 in)
1963
99.6 mm (3.9 in)
1964
102.9 mm (4.1 in)
1965
146.3 mm (5.8 in)
1966
56.4 mm (2.2 in)
1967
122.2 mm (4.8 in)
1968
94.0 mm (3.7 in)
1969
37.3 mm (1.5 in)
1970
25.4 mm (1.0 in)
1971
93.2 mm (3.7 in)
1972
170.4 mm (6.7 in)
1973
12.4 mm (0.5 in)
1974
170.7 mm (6.7 in)
1975
70.6 mm (2.8 in)
1976
65.8 mm (2.6 in)
1977
61.0 mm (2.4 in)
1978
50.8 mm (2.0 in)
1979
69.3 mm (2.7 in)
1980
247.4 mm (9.7 in)
1981
39.9 mm (1.6 in)
1982
78.7 mm (3.1 in)
1983
147.3 mm (5.8 in)
1984
35.3 mm (1.4 in)
1985
96.0 mm (3.8 in)
1986
91.9 mm (3.6 in)
1987
194.3 mm (7.6 in)
1988
231.6 mm (9.1 in)
1989
190.5 mm (7.5 in)
1990
134.6 mm (5.3 in)
1991
50.8 mm (2.0 in)
1992
104.9 mm (4.1 in)
1993
78.2 mm (3.1 in)
1994
78.5 mm (3.1 in)
1995
133.4 mm (5.3 in)
1996
101.9 mm (4.0 in)
1997
87.4 mm (3.4 in)
1998
33.0 mm (1.3 in)
1999
32.8 mm (1.3 in)
2000
48.3 mm (1.9 in)
2001
111.8 mm (4.4 in)
2002
113.0 mm (4.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Wailuku 386, 1949 to 2002. The record is 534.1 mm (21.0 in) in 1980, marked on the chart; the median year is 130.9 mm (5.2 in).
Wettest five days (Rx5day) at Wailuku 386 by year
Year
Wettest five days (Rx5day)
1949
15.2 mm (0.6 in)
1950
218.8 mm (8.6 in)
1951
166.7 mm (6.6 in)
1952
133.1 mm (5.2 in)
1953
40.6 mm (1.6 in)
1954
90.9 mm (3.6 in)
1955
472.0 mm (18.6 in)
1956
116.7 mm (4.6 in)
1957
131.8 mm (5.2 in)
1958
100.1 mm (3.9 in)
1959
139.4 mm (5.5 in)
1960
109.0 mm (4.3 in)
1961
173.5 mm (6.8 in)
1962
130.0 mm (5.1 in)
1963
107.5 mm (4.2 in)
1964
178.8 mm (7.0 in)
1965
249.2 mm (9.8 in)
1966
88.2 mm (3.5 in)
1967
197.3 mm (7.8 in)
1968
127.7 mm (5.0 in)
1969
114.1 mm (4.5 in)
1970
34.0 mm (1.3 in)
1971
134.3 mm (5.3 in)
1972
191.0 mm (7.5 in)
1973
12.9 mm (0.5 in)
1974
92.2 mm (3.6 in)
1975
142.3 mm (5.6 in)
1976
105.2 mm (4.1 in)
1977
20.8 mm (0.8 in)
1978
85.9 mm (3.4 in)
1979
106.2 mm (4.2 in)
1980
534.1 mm (21.0 in)
1981
93.5 mm (3.7 in)
1982
127.2 mm (5.0 in)
1983
225.5 mm (8.9 in)
1984
38.6 mm (1.5 in)
1985
191.1 mm (7.5 in)
1986
164.1 mm (6.5 in)
1987
28.4 mm (1.1 in)
1988
231.6 mm (9.1 in)
1989
360.0 mm (14.2 in)
1990
266.5 mm (10.5 in)
1991
56.4 mm (2.2 in)
1992
163.4 mm (6.4 in)
1993
127.4 mm (5.0 in)
1994
182.1 mm (7.2 in)
1995
203.8 mm (8.0 in)
1996
184.7 mm (7.3 in)
1997
178.8 mm (7.0 in)
1998
90.7 mm (3.6 in)
1999
55.9 mm (2.2 in)
2000
117.6 mm (4.6 in)
2001
145.8 mm (5.7 in)
2002
132.0 mm (5.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Wailuku 386, 1949 to 2002. The record is 79 days in 1984, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Wailuku 386 by year
Year
Longest dry spell (CDD)
1949
17 days
1950
39 days
1951
48 days
1952
32 days
1953
60 days
1954
21 days
1955
66 days
1956
31 days
1957
39 days
1958
24 days
1959
42 days
1960
32 days
1961
34 days
1962
46 days
1963
23 days
1964
19 days
1965
22 days
1966
38 days
1967
35 days
1968
26 days
1969
23 days
1970
45 days
1971
32 days
1972
39 days
1973
47 days
1974
44 days
1975
46 days
1976
53 days
1977
29 days
1978
26 days
1979
46 days
1980
18 days
1981
34 days
1982
21 days
1983
30 days
1984
79 days
1985
27 days
1986
20 days
1987
14 days
1988
24 days
1989
20 days
1990
9 days
1991
17 days
1992
24 days
1993
33 days
1994
41 days
1995
32 days
1996
48 days
1997
21 days
1998
26 days
1999
7 days
2000
12 days
2001
30 days
2002
62 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.
Download the Data
Data for Wailuku 386 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wailuku 386 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.