Kahalu‘u Weather in September
Average highs run from 84°F on September 1 to 83°F on September 30, and lows from 72°F to 71°F. Normal precipitation for the month is 6.42 in over about 22 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 84°F
- Average low
- 71°F
- Precipitation
- 6.42 in
- Record high
- 96°FSep 15, 2012
- Record low
- 66°FSep 28, 1996
- Chance of a freeze
- 0%
- Daylight
- 12 h 32 min to 11 h 58 min
- Cloud cover
- 44%
- Humidity
- 74%
- Dew point
- 70°F
- Wind
- 14.1 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 84°F | 72°F | 90°F 1972 | 70°F 1946 | 74% |
| Sep 2 | 84°F | 72°F | 90°F 2015 | 70°F 1955 | 74% |
| Sep 3 | 84°F | 72°F | 90°F 1987 | 70°F 1955 | 74% |
| Sep 4 | 84°F | 72°F | 91°F 1974 | 70°F 1947 | 74% |
| Sep 5 | 84°F | 72°F | 94°F 2012 | 70°F 1953 | 74% |
| Sep 6 | 84°F | 72°F | 94°F 2012 | 69°F 1944 | 74% |
| Sep 7 | 84°F | 71°F | 95°F 2012 | 69°F 2011 | 74% |
| Sep 8 | 84°F | 71°F | 89°F 1980 | 68°F 1972 | 74% |
| Sep 9 | 84°F | 71°F | 95°F 2012 | 69°F 1972 | 74% |
| Sep 10 | 84°F | 71°F | 91°F 1992 | 72°F 2011 | 74% |
| Sep 11 | 84°F | 71°F | 90°F 1979 | 70°F 1972 | 74% |
| Sep 12 | 84°F | 71°F | 91°F 2017 | 70°F 1944 | 74% |
| Sep 13 | 84°F | 71°F | 92°F 2012 | 69°F 1972 | 73% |
| Sep 14 | 84°F | 71°F | 90°F 2024 | 69°F 2008 | 73% |
| Sep 15 | 84°F | 71°F | 96°F 2012 | 71°F 2008 | 73% |
| Sep 16 | 84°F | 71°F | 90°F 1974 | 71°F 1970 | 73% |
| Sep 17 | 84°F | 71°F | 91°F 2024 | 68°F 1954 | 73% |
| Sep 18 | 84°F | 71°F | 89°F 1979 | 70°F 1954 | 73% |
| Sep 19 | 84°F | 71°F | 89°F 1979 | 72°F 1942 | 73% |
| Sep 20 | 84°F | 71°F | 90°F 1980 | 68°F 1944 | 73% |
| Sep 21 | 84°F | 71°F | 90°F 2024 | 71°F 1952 | 73% |
| Sep 22 | 84°F | 71°F | 94°F 2012 | 70°F 2009 | 73% |
| Sep 23 | 84°F | 71°F | 89°F 2024 | 70°F 2002 | 73% |
| Sep 24 | 84°F | 71°F | 91°F 2003 | 68°F 1948 | 73% |
| Sep 25 | 83°F | 71°F | 91°F 1993 | 70°F 2002 | 73% |
| Sep 26 | 83°F | 71°F | 90°F 1993 | 69°F 2002 | 72% |
| Sep 27 | 83°F | 71°F | 89°F 1979 | 68°F 1996 | 73% |
| Sep 28 | 83°F | 71°F | 89°F 1979 | 66°F 1996 | 73% |
| Sep 29 | 83°F | 71°F | 88°F 1972 | 70°F 1946 | 73% |
| Sep 30 | 83°F | 71°F | 94°F 2014 | 68°F 1953 | 73% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (HST).
- September 1
- sunrise 6:15 AM, sunset 6:47 PM
- September 30
- sunrise 6:22 AM, sunset 6:20 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00519281 (Waihee 837.5), public domain. Records: NOAA GHCN-Daily, station USW00022519, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.