Koloa Weather in August
Average highs run from 85°F on August 1 to 85°F on August 31, and lows from 75°F to 75°F. Normal precipitation for the month is 2.33 in over about 18 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 85°F
- Average low
- 75°F
- Precipitation
- 2.33 in
- Record high
- 91°FAug 25, 2019
- Record low
- 66°FAug 8, 1979
- Chance of a freeze
- 0%
- Daylight
- 13 h 07 min to 12 h 34 min
- Cloud cover
- 47%
- Humidity
- 76%
- Dew point
- 71°F
- Wind
- 15.4 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 |
|---|---|---|---|---|---|
| Aug 1 | 85°F | 75°F | 89°F 1981 | 69°F 1950 | 60% |
| Aug 2 | 85°F | 75°F | 90°F 1981 | 67°F 1955 | 60% |
| Aug 3 | 85°F | 75°F | 89°F 2019 | 69°F 1952 | 60% |
| Aug 4 | 85°F | 75°F | 88°F 1982 | 67°F 1968 | 59% |
| Aug 5 | 85°F | 75°F | 89°F 2019 | 68°F 1955 | 59% |
| Aug 6 | 85°F | 75°F | 90°F 2019 | 68°F 1959 | 59% |
| Aug 7 | 85°F | 75°F | 89°F 2019 | 67°F 1979 | 59% |
| Aug 8 | 85°F | 75°F | 90°F 2019 | 66°F 1979 | 59% |
| Aug 9 | 85°F | 75°F | 89°F 1981 | 66°F 1979 | 59% |
| Aug 10 | 85°F | 75°F | 89°F 1981 | 66°F 1957 | 58% |
| Aug 11 | 85°F | 75°F | 89°F 2019 | 67°F 1957 | 58% |
| Aug 12 | 85°F | 75°F | 90°F 2017 | 68°F 1952 | 58% |
| Aug 13 | 85°F | 75°F | 89°F 1981 | 69°F 2005 | 58% |
| Aug 14 | 85°F | 75°F | 90°F 2019 | 68°F 1952 | 58% |
| Aug 15 | 85°F | 75°F | 89°F 2017 | 68°F 1981 | 58% |
| Aug 16 | 85°F | 75°F | 89°F 1981 | 68°F 1953 | 57% |
| Aug 17 | 85°F | 75°F | 90°F 1981 | 69°F 1955 | 57% |
| Aug 18 | 85°F | 75°F | 89°F 2017 | 69°F 1955 | 57% |
| Aug 19 | 85°F | 75°F | 89°F 2019 | 70°F 1955 | 57% |
| Aug 20 | 85°F | 75°F | 90°F 2019 | 69°F 1964 | 57% |
| Aug 21 | 85°F | 75°F | 90°F 1987 | 67°F 1959 | 57% |
| Aug 22 | 85°F | 75°F | 90°F 1981 | 69°F 1950 | 57% |
| Aug 23 | 85°F | 75°F | 90°F 2015 | 69°F 1964 | 57% |
| Aug 24 | 85°F | 75°F | 90°F 2019 | 69°F 1951 | 57% |
| Aug 25 | 85°F | 75°F | 91°F 2019 | 69°F 2006 | 57% |
| Aug 26 | 85°F | 75°F | 89°F 1981 | 68°F 1955 | 57% |
| Aug 27 | 85°F | 75°F | 89°F 1981 | 68°F 1964 | 57% |
| Aug 28 | 85°F | 75°F | 89°F 2013 | 68°F 1964 | 57% |
| Aug 29 | 85°F | 75°F | 90°F 2019 | 67°F 1964 | 56% |
| Aug 30 | 85°F | 75°F | 90°F 1996 | 67°F 1954 | 56% |
| Aug 31 | 85°F | 75°F | 91°F 2019 | 69°F 1954 | 56% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (HST).
- August 1
- sunrise 6:11 AM, sunset 7:18 PM
- August 31
- sunrise 6:21 AM, sunset 6:55 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00022536 (Lihue WSO AP 1020.1), 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.