Hawaii County Weather in May
Average highs run from 54°F on May 1 to 57°F on May 31, and lows from 38°F to 41°F. Normal precipitation for the month is 0.60 in over about 4 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
- 56°F
- Average low
- 39°F
- Precipitation
- 0.60 in
- Record high
- 67°FMay 1, 2020
- Record low
- 31°FMay 14, 2015
- Chance of a freeze
- 20%
- Daylight
- 12 h 52 min to 13 h 14 min
- Cloud cover
- 57%
- Humidity
- 79%
- Dew point
- 58°F
- Wind
- 5.8 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 | 54°F | 38°F | 67°F 2020 | 33°F 2026 | 13% |
| May 2 | 54°F | 38°F | 65°F 2020 | 32°F 2023 | 13% |
| May 3 | 54°F | 38°F | 63°F 2020 | 33°F 2019 | 13% |
| May 4 | 54°F | 38°F | 65°F 2016 | 32°F 2012 | 13% |
| May 5 | 55°F | 38°F | 62°F 2010 | 32°F 2011 | 13% |
| May 6 | 55°F | 38°F | 65°F 2010 | 32°F 2006 | 13% |
| May 7 | 55°F | 38°F | 64°F 2010 | 33°F 2006 | 13% |
| May 8 | 55°F | 39°F | 61°F 2010 | 34°F 2008 | 13% |
| May 9 | 55°F | 39°F | 60°F 2021 | 32°F 2020 | 12% |
| May 10 | 55°F | 39°F | 58°F 2021 | 32°F 2006 | 12% |
| May 11 | 55°F | 39°F | 59°F 2026 | 33°F 2012 | 12% |
| May 12 | 55°F | 39°F | 65°F 2026 | 31°F 2006 | 12% |
| May 13 | 55°F | 39°F | 59°F 2025 | 31°F 2008 | 12% |
| May 14 | 55°F | 39°F | 61°F 2016 | 31°F 2015 | 12% |
| May 15 | 55°F | 39°F | 65°F 2010 | 32°F 2015 | 12% |
| May 16 | 56°F | 39°F | 63°F 2010 | 33°F 2015 | 12% |
| May 17 | 56°F | 40°F | 63°F 2010 | 34°F 2017 | 12% |
| May 18 | 56°F | 40°F | 62°F 2010 | 32°F 2013 | 12% |
| May 19 | 56°F | 40°F | 62°F 2020 | 33°F 2013 | 12% |
| May 20 | 56°F | 40°F | 62°F 2020 | 33°F 2025 | 12% |
| May 21 | 56°F | 40°F | 62°F 2014 | 36°F 2007 | 11% |
| May 22 | 56°F | 40°F | 65°F 2019 | 35°F 2012 | 11% |
| May 23 | 56°F | 40°F | 65°F 2017 | 34°F 2022 | 11% |
| May 24 | 56°F | 40°F | 66°F 2018 | 33°F 2016 | 11% |
| May 25 | 56°F | 40°F | 63°F 2006 | 34°F 2023 | 11% |
| May 26 | 57°F | 40°F | 67°F 2006 | 32°F 2023 | 11% |
| May 27 | 57°F | 40°F | 61°F 2022 | 33°F 2017 | 11% |
| May 28 | 57°F | 41°F | 65°F 2020 | 32°F 2017 | 11% |
| May 29 | 57°F | 41°F | 65°F 2020 | 34°F 2014 | 10% |
| May 30 | 57°F | 41°F | 64°F 2020 | 34°F 2011 | 10% |
| May 31 | 57°F | 41°F | 66°F 2022 | 32°F 2011 | 10% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (HST).
- May 1
- sunrise 5:53 AM, sunset 6:45 PM
- May 31
- sunrise 5:43 AM, sunset 6:57 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00021514 (Mauna Loa 5 Nne), public domain. Records: NOAA GHCN-Daily, station USW00021514, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.