This month in Hawaii

Hawaii Weather in May

Planning May in Hawaii? The daily record averages 79.4°F highs and 73.7°F lows, with 1.80 inches of rain over the month. The fare for May 8 to 15 from Omaha came in at $654 on United via Denver. On May 15 the sun is up from 5:53 am to 7:02 pm, 13.2 hours of daylight, with Honolulu 5 hours behind Omaha in May.

Plan May with Ann

Photo: Tamara G.P / Pexels

High / low

79° / 74°F

Rain

1.8 in

for the month

Humidity

74%

Wind

14 mph

Hurricane season

Off season

Fare from OMA

$654

May 8, 2027–May 15, 2027

Verdict

May in Hawaii: 1.80 in rain, 79.4°F average high; outside hurricane season.

Rule: rain, comfort band and hurricane timing, explained on the method page.

vs last / next month

vs April: 2°F warmer, 0.3 in drier, 1 pts less humid
vs June: 1°F cooler, 0.4 in wetter
May sky: 49.8% cloud, 6.81 kWh/m²/day solar. April: 57.7% / 6.28; June: 48.1% / 7.09 (NASA).
2027-05-15: sunrise 05:53, sunset 19:02; 13.15 hours of light, changing 24 minutes across May. April daylight: 12.64 hours; June: 13.42. Omaha clock offset: -5 hours.
May water: 77.7°F (NOAA 2015–2024). April water: 76.8°F; June: 78.8°F. Dew point: 67.3°F in May, 66.0°F in April, 68.6°F in June (NASA 2001–2025).
Fares: $654 in May versus $654 in April; June came in at $704.

NASA POWER 2001–2025 means, Honolulu / Waikiki, Oahu, Hawaii.

Holidays & events

Official May dates we could source: Memorial Day on May 31 (Hawaii DHRD state holiday list). No sourced May crowd data, so none claimed.

Pack for May (rule shown)

The usual: swimsuit, SPF, one nice outfitno rule triggered
Reef-safe sunscreen and a rash guard6.81 kWh/m2/day of sun in May clears the 5.0 line; the daily-mean UV index of 2.42 cannot be read against the midday 8+ rule.
Swim top for longer snorkelsMay sea temperature 78°F, under 78.
Your REAL ID licenseMay flights to Honolulu are domestic: TSA ID, no passport.

Flight detail, OMA to HNL

$654

United, 1 stop via DEN, 10h 30m out. 48 itineraries. Observed Oct 31, 2026; not a quote.

Guide, sources and the 12-month table: Hawaii.

May questions

Hawaii weather: May or the months beside it?

For Hawaii, April brings 2.06 inches of rain and 77.6°F average highs. May moves to 1.80 inches and 79.4°F; June to 1.36 inches and 80.8°F. Average May lows: 73.7°F.

What is the sea temperature in Hawaii in May?

Sea surface temperature averages 78°F in May (NOAA Coral Reef Watch monthly, 2015 to 2024), against 77°F in April and 79°F in June.

Sources: ignav.com · weather.gov · dhrd.hawaii.gov · power.larc.nasa.gov · coastwatch.pfeg.noaa.gov · tsa.gov · power.larc.nasa.gov

From Ann

May in Hawaii, priced for your week.

Considering May in Hawaii? Share your dates and budget. Ann checks OMA–HNL flights and places to stay against this 1.80 in rain / 79.4°F climate record.

Plan May Call or text (402) 707-4877

Photo: Tamara G.P / Pexels