Weather in Honolulu in September
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Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for September in Honolulu.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youIn September, Honolulu sees average highs of 29.2°C (84.6°F) and lows of 23.4°C. Conditions are hot and mostly dry with only occasional showers, with roughly 11.7 hours of sunshine a day. It is one of the best months of the year to visit. For the complete picture, see the best time to visit Honolulu — every month compared. Once you know when to go, find your Honolulu packing list at 247PackingList.
Get ready for Honolulu in September
Search flights to Honolulu
Compare 100+ airlines for September — one search, best price.
Search Flights →Hot-weather travel clothing
Sun protection, lightweight layers and a reusable water bottle are essential here.
Check Price →What to pack for Honolulu in September
- Light layers
- Sunscreen
- T-shirts and light trousers or shorts
Compare all months in Honolulu
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 25.4°C | 36.2mm | 10/10 |
| February | 25.1°C | 46.5mm | 10/10 |
| March | 25.1°C | 77.7mm | 10/10 |
| April | 25.9°C | 44.2mm | 10/10 |
| May | 26.9°C | 30.1mm | 10/10 |
| June | 28.3°C | 17.2mm | 10/10 |
| July | 28.7°C | 19.1mm | 10/10 |
| August | 29.3°C | 18.2mm | 10/10 |
| September | 29.2°C | 16.0mm | 10/10 |
| October | 28.5°C | 31.9mm | 10/10 |
| November | 27.3°C | 33.4mm | 10/10 |
| December | 25.7°C | 69.2mm | 10/10 |
Full month-by-month guide: best time to visit Honolulu →
For facts about United States — currency, language and dialling code — see our United States country guide at 247CountryInfo. Travellers also find it useful to keep a Honolulu travel guide to hand. Check clothing sizes in United States before you shop.
Frequently Asked Questions
Is September a good time to visit Honolulu?
September rates 10/10 for visiting Honolulu — excellent time to visit. Expect average highs of 29.2°C, 16.0mm of rain across the month and about 11.7 hours of daily sunshine.
What is the temperature in Honolulu in September?
In September, Honolulu has average highs of 29.2°C (84.6°F) and average lows of 23.4°C (74.1°F).
Does it rain in Honolulu in September?
Not much. September averages just 16.0mm of rain in Honolulu — the odd shower is possible but most days stay dry.
What should I wear in Honolulu in September?
For Honolulu in September (29.2°C highs / 23.4°C lows), pack light layers plus sunscreen, t-shirts and light trousers or shorts.
More essentials for Honolulu in September
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.