🧳 Packing guide
What to wear in Honolulu (Hawaii) in September
For what to wear in Honolulu (Hawaii) in September, light, breathable clothes work best, with sun protection for long outdoor days. Heavy rain gear is usually unnecessary, although a small umbrella is an easy backup.
Travel takeaway: The month can be a practical time to visit when your packing matches the daytime-to-evening temperature change.
🗓️ Travel timing at a glance
Honolulu (Hawaii): 12-month travel weather
Honolulu is warm year-round. May–October is usually drier, while November–April sees somewhat more rain, often as short showers.
Monthly labels summarize typical climate patterns for trip planning. Always check the latest forecast and tropical-storm alerts before departure.
🎉 Trip planning check
Honolulu (Hawaii) 2026 events & busy periods
Check major events, holidays and periods that may affect crowds, transport or opening hours.
⚠️ Busy / closure periodSeptember related
Aloha Festivals
📅 Centered on September each year · details vary
Hawaiian music, hula, parades and street events take place around Waikīkī. Kalākaua Avenue can be especially busy on major event days.
Check official source →🎊 Featured event
King Kamehameha Celebration
📅 Jun 12, 2026 · Oʻahu lei-draping ceremony
A traditional ceremony drapes long flower leis over the King Kamehameha I statue in downtown Honolulu, with related commemorative events and possible nearby traffic changes.
Check official source →Event dates, holiday schedules and opening hours can change. Recheck the linked official tourism or government source before departure.
Honolulu (Hawaii) Weather in September
2016–2025 · 10 complete years averaged · °F
Honolulu (Hawaii) in September · recent 3 years
Compare the most recent complete year with the two years before it. Daily high / low temperatures are shown in °F.
CalendarNo measurable rain🌧️ Rain⛈️ Thunderstorm❄️ SnowHigh / Low · °F
⭐ September 2025 · latest complete year☔ 7 days · 21.9 mm
10
🌦️
30.3°C/22.9°C
🌧️ 1.4 mm
19
🌦️
29.8°C/23.3°C
🌧️ 2.1 mm
20
🌦️
29.1°C/23.3°C
🌧️ 3.1 mm
21
🌦️
28.7°C/23.3°C
🌧️ 1.4 mm
22
🌧️
28.5°C/23.6°C
🌧️ 3.2 mm
25
🌦️
27.9°C/21.2°C
🌧️ 2.6 mm
26
🌦️
28.6°C/22.5°C
🌧️ 2.5 mm
September 2024☔ 4 days · 13.4 mm
10
🌦️
28.7°C/20.8°C
🌧️ 2.3 mm
22
🌧️
29.4°C/21.9°C
🌧️ 2.6 mm
30
🌦️
29.2°C/23.3°C
🌧️ 1.6 mm
September 2023☔ 8 days · 20.2 mm
1
🌦️
29.6°C/23.2°C
🌧️ 1.6 mm
3
🌦️
29.5°C/22.4°C
🌧️ 1.6 mm
9
🌦️
28.5°C/23.3°C
🌧️ 2.7 mm
10
🌦️
29.5°C/23.4°C
🌧️ 1.5 mm
13
🌦️
30.3°C/23.2°C
🌧️ 1.6 mm
14
🌦️
29.7°C/22.5°C
🌧️ 1.6 mm
18
🌦️
29.4°C/23.6°C
🌧️ 1.1 mm
29
🌦️
30.4°C/23.6°C
🌧️ 1.6 mm
Historical calendars use Open-Meteo reanalysis data. A rainy day is counted when daily precipitation is at least 1 mm. Conditions at a specific hotel, beach or station can differ.
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Current Honolulu (Hawaii) weather and 7-day forecast
When departure is close, the latest forecast matters more than long-term averages.
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Honolulu (Hawaii) weather in other months
Switch months to compare the seasonal pattern.
Travel Weather Fairy