This month in Hawaii

Hawaii Weather in September

Planning September in Hawaii? The daily record averages 82.8°F highs and 77.2°F lows, with 1.83 inches of rain over the month. The Omaha fare for September 11 to 18 was $712 on American via Los Angeles, but only 4 itineraries came back in that search, so options were thin. Daylight on the 15th runs 6:18 am to 6:35 pm (12.3 hours); set your watch 5 hours back from Omaha time in September.

Plan September with Ann

Photo: Tamara G.P / Pexels

High / low

83° / 77°F

Rain

1.8 in

for the month

Humidity

73%

Wind

14 mph

Hurricane season

In season

Fare from OMA

$712

Sep 11, 2027–Sep 18, 2027

Verdict

Maybe

September in Hawaii: 1.83 in rain, 82.8°F average high; peak hurricane window.

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

vs last / next month

vs August: same highs, 0.2 in wetter
vs October: 1°F warmer, 0.8 in drier, 1 pts less humid
September sky: 46.7% cloud, 6.22 kWh/m²/day solar. August: 46.9% / 6.69; October: 56.0% / 5.19 (NASA).
2027-09-15: sunrise 06:18, sunset 18:35; 12.27 hours of light, changing -36 minutes across September. August daylight: 12.86 hours; October: 11.67. Omaha clock offset: -5 hours.
September water: 81.1°F (NOAA 2015–2024). August water: 80.6°F; October: 80.9°F. Dew point: 70.2°F in September, 70.2°F in August, 70.0°F in October (NASA 2001–2025).
Fares: $712 in September versus $719 in August; October has no fare yet because schedules were not open.

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

Holidays & events

On the Honolulu calendar for September (Hawaii DHRD state holiday list): Labor Day on September 6. Labor Day on September 6 is on the OPM federal list, so Omaha flights around that date fill first. Occupancy for September is not in our data; Ann hears it from the resorts.

Pack for September (rule shown)

Travel insurance confirmation and the resort's weather policyinside hurricane season
Reef-safe sunscreen and a rash guardSeptember solar energy 6.22 kWh per square meter a day, over our 5.0 line; NASA's daily-mean UV index (2.32) is not the midday 8+ scale.
A REAL ID or other TSA-accepted IDNo passport for a September Hawaii trip; TSA needs an acceptable ID.

Flight detail, OMA to HNL

$712

American, 1 stop via LAX, 11h 05m out. 4 itineraries. Observed Oct 31, 2026; not a quote.

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

September questions

What changes around September in Hawaii?

For Hawaii, August brings 1.64 inches of rain and 82.5°F average highs. September moves to 1.83 inches and 82.8°F; October to 2.67 inches and 81.7°F. Average September lows: 77.2°F.

How warm is the water in Hawaii in September?

Sea surface temperature averages 81°F in September (NOAA Coral Reef Watch monthly, 2015 to 2024), against 81°F in August and 81°F in October.

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

From Ann

September in Hawaii, priced for your week.

Considering September in Hawaii? Share your dates and budget. Ann checks OMA–HNL flights and places to stay against this 1.83 in rain / 82.8°F climate record.

Plan September Call or text (402) 707-4877

Photo: Tamara G.P / Pexels