Waipahu Weather in May
Average highs run from 83°F on May 1 to 85°F on May 31, and lows from 66°F to 68°F. Normal precipitation for the month is 1.02 in over about 6 wet days.
May day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 84°F
- Average low
- 67°F
- Precipitation
- 1.02 in
- Record high
- 92°FMay 28, 2003
- Record low
- 56°FMay 1, 2006
- Chance of a freeze
- 0%
- Daylight
- 12 h 57 min to 13 h 21 min
- Cloud cover
- 48%
- Humidity
- 74%
- Dew point
- 67°F
- Wind
- 13.6 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 |
|---|---|---|---|---|---|
| May 1 | 83°F | 66°F | 84°F 2003 | 56°F 2006 | 21% |
| May 2 | 83°F | 66°F | 87°F 2005 | 56°F 2006 | 21% |
| May 3 | 83°F | 66°F | 84°F 1999 | 58°F 2006 | 21% |
| May 4 | 83°F | 66°F | 83°F 2005 | 62°F 2006 | 21% |
| May 5 | 83°F | 66°F | 87°F 2005 | 62°F 1999 | 20% |
| May 6 | 83°F | 67°F | 85°F 2003 | 59°F 1999 | 20% |
| May 7 | 83°F | 67°F | 82°F 2003 | 60°F 1999 | 20% |
| May 8 | 83°F | 67°F | 81°F 2000 | 60°F 2004 | 20% |
| May 9 | 83°F | 67°F | 85°F 2004 | 62°F 2004 | 20% |
| May 10 | 83°F | 67°F | 81°F 1999 | 61°F 2007 | 20% |
| May 11 | 83°F | 67°F | 84°F 2005 | 59°F 2007 | 20% |
| May 12 | 83°F | 67°F | 87°F 2005 | 62°F 2001 | 20% |
| May 13 | 83°F | 67°F | 85°F 2005 | 61°F 2008 | 19% |
| May 14 | 83°F | 67°F | 87°F 2004 | 60°F 1999 | 19% |
| May 15 | 83°F | 67°F | 84°F 1999 | 58°F 2000 | 19% |
| May 16 | 84°F | 67°F | 84°F 2000 | 57°F 2006 | 19% |
| May 17 | 84°F | 67°F | 83°F 2000 | 59°F 2000 | 19% |
| May 18 | 84°F | 67°F | 83°F 2000 | 60°F 2000 | 19% |
| May 19 | 84°F | 67°F | 85°F 2010 | 59°F 2009 | 19% |
| May 20 | 84°F | 67°F | 86°F 2004 | 62°F 2004 | 18% |
| May 21 | 84°F | 67°F | 85°F 2004 | 59°F 2009 | 18% |
| May 22 | 84°F | 67°F | 85°F 2004 | 60°F 2009 | 18% |
| May 23 | 84°F | 67°F | 87°F 2004 | 61°F 2000 | 18% |
| May 24 | 84°F | 67°F | 85°F 2002 | 60°F 2006 | 18% |
| May 25 | 84°F | 68°F | 84°F 2002 | 62°F 2000 | 18% |
| May 26 | 84°F | 68°F | 86°F 2003 | 61°F 2000 | 17% |
| May 27 | 84°F | 68°F | 87°F 2003 | 61°F 1998 | 17% |
| May 28 | 84°F | 68°F | 92°F 2003 | 62°F 2003 | 17% |
| May 29 | 85°F | 68°F | 87°F 2002 | 62°F 2008 | 17% |
| May 30 | 85°F | 68°F | 89°F 2002 | 62°F 1998 | 17% |
| May 31 | 85°F | 68°F | 86°F 2002 | 59°F 1998 | 17% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (HST).
- May 1
- sunrise 6:01 AM, sunset 6:58 PM
- May 31
- sunrise 5:49 AM, sunset 7:10 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00511918 (Ewa Beach Usgs 702.2), public domain. Records: NOAA GHCN-Daily, station USC00518838, 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.