Kahului, HI

Hawaii · Records since 1954–2026

☀️ 80°F
Currently in Kahului
As of 8:30 AM HST

Records for September 11

🔥 Record High

95°F

September 11, 1992

+5° from 90° normal

❄ Record Low

61°F

September 11, 2011

-10° from 71° normal
🌞 Normal high: 90°F 🌑 Normal low: 71°F 1991–2020 normals

All-Time Records — Kahului

🔥
97°F
Hottest Day Ever
Sep 16, 2019
❄
48°F
Coldest Day Ever
Jan 20, 1969
🌧
7.40"
Wettest Day Ever
Mar 13, 2026
☃
0.0"
Most Snow in One Day
Nov 30, 2020

First & Last Dates — Kahului

How early and how late each seasonal turning point has ever arrived, across the full period of record

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Range ever recorded Normal date (1991–2020)

Top 10 Record Highs — September 11

# Temp Date
🏆 95°F September 11, 1992
2 93°F September 11, 2020
3 93°F September 11, 2017
4 93°F September 11, 2015
5 92°F September 11, 1980
6 92°F September 11, 1979
7 91°F September 11, 2025
8 91°F September 11, 2024
9 91°F September 11, 2014
10 91°F September 11, 2006

Top 5 Record Lows — September 11

# Temp Date
🥶 61°F September 11, 2011
2 62°F September 11, 1973
3 63°F September 11, 1985
4 63°F September 11, 1970
5 64°F September 11, 1984
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1954–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Kahului

threshold: 90°F (90th percentile of historical Jun–Aug highs)
5.5
Avg heat wave length
days (historical)
93°
Avg peak temp
during heat waves
131
Dangerous nights 2026
Overnights ≥ 70°F
0
Heat waves 2026
so far

Days ≥ 90°F Per Year

1954–2026
7
2026 so far
30
Avg/year 1970–2025
70
Avg/year (last 10 complete)
162
Most in a year (2019)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Kahului

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 20, 2019 – Oct 3, 2019 45 97°F (Sep 16) 92°F 74°F
2 Aug 17, 2020 – Sep 30, 2020 45 96°F (Sep 18) 92°F 74°F
3 Oct 2, 2020 – Oct 28, 2020 27 96°F (Oct 3) 93°F 71°F
4 Jun 21, 2019 – Jul 16, 2019 26 95°F (Jun 22) 92°F 71°F
5 Oct 8, 1984 – Oct 25, 1984 18 95°F (Oct 15) 93°F 70°F
6 Aug 7, 2015 – Aug 23, 2015 17 97°F (Aug 22) 92°F 74°F
7 May 18, 2019 – Jun 1, 2019 15 96°F (May 22) 93°F 69°F
8 Jul 18, 2019 – Jul 31, 2019 14 97°F (Jul 29) 92°F 74°F
9 Sep 14, 2022 – Sep 27, 2022 14 96°F (Sep 23) 93°F 72°F
10 Aug 17, 1968 – Aug 30, 1968 14 94°F (Aug 19) 91°F 70°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

64
2026 total
above-normal nights
40.1
Avg / summer
1970–2020
68
Most in a summer
1994

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Annual totals and trend across the full period of record · see this year's standing →

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1905–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1905, annual totals have trended -0.31" per decade, about -3.7" across the record.

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

This Year — 2026

How Kahului is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

36 of 253 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

30.22"
2026 YTD
Normal: 10.49"
+19.73"
0.54"
September so far
September normal: 0.45"
+0.09"
4
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Kahului is 19.73" ahead of the normal pace

Period Review — Sep 1 – Sep 10, 2026

Any window, evaluated against every other year on record — 10 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
81.4°F
Average temperature
10th-warmest of 73
+1.4°
vs. average
Normal: 80.0°F (1991–2020)
0.54"
Precipitation
3rd-wettest of 89
+0.45"
vs. average
Normal: 0.09" · 600% of normal

Average Temperature by Year — Sep 1 – Sep 10

1954–2026 · 2026 highlighted · trend +0.39° per decade (warming since 1954)

Precipitation by Year — Sep 1 – Sep 10

1905–2026 · 2026 highlighted

Warmest Sep 1 – Sep 10 on Record

# Year Avg Temp
1 2019 83.9°F
2 2020 83.3°F
3 2022 82.8°F
4 2015 81.9°F
5 1978 81.8°F
6 1980 81.7°F
7 1997 81.6°F
8 2016 81.6°F
9 1996 81.5°F
10 2026 81.4°F

Coolest Sep 1 – Sep 10 on Record

# Year Avg Temp
1 1955 74.5°F
2 2011 75.9°F
3 1975 76.4°F
4 1985 76.4°F
5 1954 76.5°F
6 1983 76.9°F
7 1958 77.3°F
8 1956 77.6°F
9 1972 77.7°F
10 1957 77.8°F

Wettest Sep 1 – Sep 10 on Record

# Year Total
1 1919 1.46"
2 1992 0.67"
3 2026 0.54"
4 1966 0.46"
5 1982 0.43"
6 1998 0.41"
7 2018 0.41"
8 2022 0.40"
9 1981 0.33"
10 1958 0.32"

Driest Sep 1 – Sep 10 on Record

# Year Total
1 2025 0.00"
2 2024 0.00"
3 2023 0.00"
4 2020 0.00"
5 2017 0.00"
6 2008 0.00"
7 2007 0.00"
8 2004 0.00"
9 2002 0.00"
10 2000 0.00"
About this data. Pick any start and end date and this becomes the same kind of review as the Month and Fall tabs, just for exactly the window you asked for — the generalized version of the same engine, evaluated across every year on record. Average temperature is the mean of each day's (high + low) / 2; precipitation is the sum of daily totals. A year missing more than about a fifth of the window's days is excluded from the temperature ranking; any missing day excludes a year from the precipitation ranking, since an unreported day is unreported rain. Ranges that cross from December into January aren't supported yet. Normals are the 1991–2020 mean for the same window.
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