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Data as of 2025-12-31
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Built 2026-10-15 (15 October 2026)

Ahuimanu Loop 839.12 Weather Records (USC00510055)

Record envelope, standing records and threshold days for Ahuimanu Loop 839.12 (USC00510055), Hawaii, United States, with 122 years of record.

Key Facts for Ahuimanu Loop 839.12

  • Ahuimanu Loop 839.12 (USC00510055) is a weather station in Hawaii, United States at 21.43 latitude and -157.84 longitude, 74 m (243 ft) above sea level.
  • The station reports from 1905 to 2026, 122 years of record.
  • 1,462 records set at Ahuimanu Loop 839.12 still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Hawaii, United States, 21.43 latitude, -157.84 longitude.
  • Elevation: 74 m (243 ft).
  • Period of record: 1905 to 2026, 122 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Ahuimanu Loop 839.12, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ahuimanu Loop 839.12. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Ahuimanu Loop 839.12. 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 Ahuimanu Loop 839.12, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan31.7 C (89.1 F)3.3 C (37.9 F)n/an/a
Feb31.7 C (89.1 F)10.6 C (51.1 F)n/an/a
Mar34.4 C (93.9 F)11.7 C (53.1 F)n/an/a
Apr35.0 C (95.0 F)10.0 C (50.0 F)n/an/a
May34.4 C (93.9 F)15.6 C (60.1 F)n/an/a
Jun31.1 C (88.0 F)15.6 C (60.1 F)n/an/a
Jul31.7 C (89.1 F)14.4 C (57.9 F)n/an/a
Aug31.7 C (89.1 F)13.9 C (57.0 F)n/an/a
Sep33.3 C (91.9 F)15.6 C (60.1 F)n/an/a
Oct31.7 C (89.1 F)11.7 C (53.1 F)n/an/a
Nov30.6 C (87.1 F)10.6 C (51.1 F)n/an/a
Dec29.4 C (84.9 F)12.2 C (54.0 F)n/an/a

Which Years Hold Standing Records

1,462 standing records
Standing records at Ahuimanu Loop 839.12 by the year they were set 1,462 records at Ahuimanu Loop 839.12 still stand. 1906 holds the most, with 212. 01002003001905: 1881906: 2121907: 2071908: 1871909: 1321910: 1091911: 1721912: 621913: 1031914: 901905190619071908190919101911191219131914
1,462 records at Ahuimanu Loop 839.12 still stand. 1906 holds the most, with 212.
Standing records at Ahuimanu Loop 839.12 by the year they were set
Year setStanding records
1905188
1906212
1907207
1908187
1909132
1910109
1911172
191262
1913103
191490

Wettest Day of Each Month

Jan: 236.5 mm (9.3 in)
Record daily precipitation for each month at Ahuimanu Loop 839.12 The wettest day on record for each calendar month at Ahuimanu Loop 839.12. The most was 236.5 mm (9.3 in) on 1 January 1907. 0100200300 Jan: 236.5 mm (9.3 in), 1 January 1907 Jan Feb: 78.7 mm (3.1 in), 8 February 1908 Feb Mar: 213.4 mm (8.4 in), 12 March 1909 Mar Apr: 135.9 mm (5.4 in), 4 April 1914 Apr May: 228.6 mm (9.0 in), 29 May 1907 May Jun: 80.0 mm (3.1 in), 3 June 1913 Jun Jul: 38.6 mm (1.5 in), 27 July 1910 Jul Aug: 102.9 mm (4.1 in), 16 August 1913 Aug Sep: 138.9 mm (5.5 in), 12 September 1910 Sep Oct: 45.7 mm (1.8 in), 1 October 1911 Oct Nov: 114.3 mm (4.5 in), 29 November 1906 Nov Dec: 122.7 mm (4.8 in), 31 December 1906 Dec
The wettest day on record for each calendar month at Ahuimanu Loop 839.12. The most was 236.5 mm (9.3 in) on 1 January 1907.
Record daily precipitation for each month at Ahuimanu Loop 839.12
MonthRecord daily precipitation (mm)Date
Jan236.5 mm (9.3 in)1 January 1907
Feb78.7 mm (3.1 in)8 February 1908
Mar213.4 mm (8.4 in)12 March 1909
Apr135.9 mm (5.4 in)4 April 1914
May228.6 mm (9.0 in)29 May 1907
Jun80.0 mm (3.1 in)3 June 1913
Jul38.6 mm (1.5 in)27 July 1910
Aug102.9 mm (4.1 in)16 August 1913
Sep138.9 mm (5.5 in)12 September 1910
Oct45.7 mm (1.8 in)1 October 1911
Nov114.3 mm (4.5 in)29 November 1906
Dec122.7 mm (4.8 in)31 December 1906

Period of Record Coverage

1905 to 1914
Days with data per year at Ahuimanu Loop 839.12 10 years of record at Ahuimanu Loop 839.12, 1905 to 1914. 5 years have data for under 90 percent of days and are left out of rankings: 1909, 1910, 1911, 1912, 1914. 1905: 363 of 365 days1906: 350 of 365 days1907: 358 of 365 days1908: 331 of 366 days1909: 285 of 365 days1910: 243 of 365 days1911: 302 of 365 days1912: 227 of 366 days1913: 329 of 365 days1914: 277 of 365 days19051910
10 years of record at Ahuimanu Loop 839.12, 1905 to 1914. 5 years have data for under 90 percent of days and are left out of rankings: 1909, 1910, 1911, 1912, 1914.
Days with data per year at Ahuimanu Loop 839.12
YearDays with dataShare of yearComplete
190536399%Yes
190635096%Yes
190735898%Yes
190833190%Yes
190928578%No
191024367%No
191130283%No
191222762%No
191332990%Yes
191427776%No

Latest Records

0

No records were set at this station in the latest data.

Extremes by Year

1905 to 2026
Yearly extremes at Ahuimanu Loop 839.12: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.0 C (95.0 F)190831.4 C (88.5 F)10
Coldest night (TNn)3.3 C (37.9 F)190912.3 C (54.1 F)10
Wettest day (Rx1day)236.5 mm (9.3 in)1907115.1 mm (4.5 in)13
Wettest five days (Rx5day)474.8 mm (18.7 in)1907167.9 mm (6.6 in)12
Longest dry spell (CDD)15 days190810 days13

Hottest day (TXx)

Hottest day (TXx) at Ahuimanu Loop 839.12 by year The hottest day of the year at Ahuimanu Loop 839.12, 1905 to 2026. The record is 35.0 C (95.0 F) in 1908, marked on the chart; the median year is 31.4 C (88.5 F). 30323436192019401960198020002020Record: 35.0 C (95.0 F) in 1908
The hottest day of the year at Ahuimanu Loop 839.12, 1905 to 2026. The record is 35.0 C (95.0 F) in 1908, marked on the chart; the median year is 31.4 C (88.5 F).
Hottest day (TXx) at Ahuimanu Loop 839.12 by year
YearHottest day (TXx)
190531.1 C (88.0 F)
190631.7 C (89.1 F)
190734.4 C (93.9 F)
190835.0 C (95.0 F)
190934.4 C (93.9 F)
191033.3 C (91.9 F)
191130.0 C (86.0 F)
191230.0 C (86.0 F)
191331.1 C (88.0 F)
191430.0 C (86.0 F)
2024n/a
2025n/a
2026n/a

Coldest night (TNn)

Coldest night (TNn) at Ahuimanu Loop 839.12 by year The coldest night of the year at Ahuimanu Loop 839.12, 1905 to 2026. The record is 3.3 C (37.9 F) in 1909, marked on the chart; the median year is 12.3 C (54.1 F). 051015192019401960198020002020Record: 3.3 C (37.9 F) in 1909
The coldest night of the year at Ahuimanu Loop 839.12, 1905 to 2026. The record is 3.3 C (37.9 F) in 1909, marked on the chart; the median year is 12.3 C (54.1 F).
Coldest night (TNn) at Ahuimanu Loop 839.12 by year
YearColdest night (TNn)
190511.1 C (52.0 F)
190611.7 C (53.1 F)
190712.8 C (55.0 F)
190810.6 C (51.1 F)
19093.3 C (37.9 F)
191015.0 C (59.0 F)
191112.8 C (55.0 F)
191213.3 C (55.9 F)
191311.1 C (52.0 F)
191412.8 C (55.0 F)
2024n/a
2025n/a
2026n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Ahuimanu Loop 839.12 by year The wettest day of the year at Ahuimanu Loop 839.12, 1905 to 2026. The record is 236.5 mm (9.3 in) in 1907, marked on the chart; the median year is 115.1 mm (4.5 in). 0100200300192019401960198020002020Record: 236.5 mm (9.3 in) in 1907
The wettest day of the year at Ahuimanu Loop 839.12, 1905 to 2026. The record is 236.5 mm (9.3 in) in 1907, marked on the chart; the median year is 115.1 mm (4.5 in).
Wettest day (Rx1day) at Ahuimanu Loop 839.12 by year
YearWettest day (Rx1day)
1905115.1 mm (4.5 in)
1906122.7 mm (4.8 in)
1907236.5 mm (9.3 in)
1908101.9 mm (4.0 in)
1909213.4 mm (8.4 in)
1910138.9 mm (5.5 in)
1911128.5 mm (5.1 in)
191254.6 mm (2.1 in)
1913102.9 mm (4.1 in)
1914135.9 mm (5.4 in)
20244.3 mm (0.17 in)
202542.2 mm (1.7 in)
202662.7 mm (2.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ahuimanu Loop 839.12 by year The wettest five days of the year at Ahuimanu Loop 839.12, 1905 to 2026. The record is 474.8 mm (18.7 in) in 1907, marked on the chart; the median year is 167.9 mm (6.6 in). 0200400600192019401960198020002020Record: 474.8 mm (18.7 in) in 1907
The wettest five days of the year at Ahuimanu Loop 839.12, 1905 to 2026. The record is 474.8 mm (18.7 in) in 1907, marked on the chart; the median year is 167.9 mm (6.6 in).
Wettest five days (Rx5day) at Ahuimanu Loop 839.12 by year
YearWettest five days (Rx5day)
1905127.2 mm (5.0 in)
1906240.0 mm (9.4 in)
1907474.8 mm (18.7 in)
1908172.2 mm (6.8 in)
1909401.4 mm (15.8 in)
1910140.2 mm (5.5 in)
1911163.5 mm (6.4 in)
191284.3 mm (3.3 in)
1913212.1 mm (8.4 in)
1914299.1 mm (11.8 in)
2024n/a
202587.6 mm (3.4 in)
202662.7 mm (2.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ahuimanu Loop 839.12 by year The longest dry spell of the year at Ahuimanu Loop 839.12, 1905 to 2026. The record is 15 days in 1908, marked on the chart; the median year is 10 days. 051015192019401960198020002020Record: 15 days in 1908
The longest dry spell of the year at Ahuimanu Loop 839.12, 1905 to 2026. The record is 15 days in 1908, marked on the chart; the median year is 10 days.
Longest dry spell (CDD) at Ahuimanu Loop 839.12 by year
YearLongest dry spell (CDD)
190514 days
19067 days
190713 days
190815 days
190910 days
191010 days
19119 days
19129 days
19137 days
19145 days
20241 day
202512 days
202611 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 Ahuimanu Loop 839.12 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Ahuimanu Loop 839.12 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 . Last revised (2025-12-31).