‘Ōma‘o Weather in September
Average highs run from 87°F on September 1 to 87°F on September 30, and lows from 72°F to 73°F. Normal precipitation for the month is 1.16 in over about 9 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
- 87°F
- Average low
- 72°F
- Precipitation
- 1.16 in
- Record high
- 91°FSep 4, 2019
- Record low
- 65°FSep 17, 1981
- Chance of a freeze
- 0%
- Days of 90°F or more
- 4.1
- Daylight
- 12 h 33 min to 11 h 57 min
- Cloud cover
- 46%
- Humidity
- 76%
- Dew point
- 71°F
- Wind
- 13.9 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 | 87°F | 72°F | 89°F 2019 | 69°F 1955 | 24% |
| Sep 2 | 87°F | 72°F | 90°F 2019 | 70°F 1955 | 25% |
| Sep 3 | 87°F | 72°F | 89°F 1981 | 67°F 1965 | 25% |
| Sep 4 | 87°F | 72°F | 91°F 2019 | 69°F 1965 | 25% |
| Sep 5 | 87°F | 72°F | 91°F 2019 | 67°F 1965 | 26% |
| Sep 6 | 87°F | 72°F | 91°F 2019 | 66°F 1955 | 26% |
| Sep 7 | 87°F | 72°F | 91°F 2019 | 66°F 1955 | 26% |
| Sep 8 | 87°F | 72°F | 91°F 2019 | 66°F 1955 | 26% |
| Sep 9 | 87°F | 72°F | 90°F 2019 | 66°F 1981 | 27% |
| Sep 10 | 87°F | 72°F | 90°F 2019 | 66°F 1981 | 27% |
| Sep 11 | 87°F | 72°F | 90°F 2019 | 66°F 1981 | 27% |
| Sep 12 | 87°F | 72°F | 90°F 2019 | 66°F 1981 | 27% |
| Sep 13 | 87°F | 72°F | 90°F 1995 | 67°F 1972 | 27% |
| Sep 14 | 87°F | 72°F | 88°F 1959 | 66°F 1951 | 28% |
| Sep 15 | 87°F | 72°F | 89°F 1959 | 67°F 1957 | 28% |
| Sep 16 | 87°F | 72°F | 89°F 1959 | 66°F 1981 | 28% |
| Sep 17 | 87°F | 72°F | 89°F 2017 | 65°F 1981 | 28% |
| Sep 18 | 87°F | 72°F | 89°F 1995 | 67°F 1961 | 29% |
| Sep 19 | 87°F | 72°F | 89°F 2019 | 68°F 1957 | 29% |
| Sep 20 | 87°F | 72°F | 89°F 1959 | 67°F 1952 | 29% |
| Sep 21 | 87°F | 73°F | 89°F 1981 | 65°F 1957 | 29% |
| Sep 22 | 87°F | 73°F | 89°F 1981 | 66°F 1957 | 29% |
| Sep 23 | 87°F | 73°F | 88°F 1959 | 66°F 1950 | 29% |
| Sep 24 | 87°F | 73°F | 89°F 2019 | 67°F 1952 | 30% |
| Sep 25 | 87°F | 73°F | 89°F 1981 | 67°F 1965 | 30% |
| Sep 26 | 87°F | 73°F | 90°F 1993 | 67°F 1965 | 30% |
| Sep 27 | 87°F | 73°F | 88°F 1981 | 66°F 1977 | 30% |
| Sep 28 | 87°F | 73°F | 89°F 2017 | 66°F 1958 | 30% |
| Sep 29 | 87°F | 73°F | 88°F 1958 | 65°F 1952 | 30% |
| Sep 30 | 87°F | 73°F | 88°F 1981 | 65°F 1968 | 30% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (HST).
- September 1
- sunrise 6:21 AM, sunset 6:54 PM
- September 30
- sunrise 6:29 AM, sunset 6:26 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00515864 (Makaweli 965), public domain. Records: NOAA GHCN-Daily, station USW00022536, 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.