Month guide · Honolulu · United States
Honolulu in September
What September is really like in Honolulu: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: ErgoSum88, Public domain
Quick answer
September is one of the best months to visit Honolulu. Expect average highs of 31°C (88°F), lows of 24°C (75°F), about 6 rainy days and roughly 12.2 hours of daylight. Still hot and dry, but crowds thin out after the summer holidays and hotel rates drop.
Key facts
- Average high / low
- 31°C (88°F) / 24°C (75°F)
- Rainy days
- About 6
- Daylight
- About 12.2 hours
- Sea temperature
- 27°C (81°F)
- Crowds
- Quiet
- Hotel prices
- Low
Weather in September
September is the 3rd-warmest month in Honolulu: days average 31°C (88°F) against a yearly average high of 29°C (84°F), and nights fall to about 24°C (75°F). Rain falls on roughly 6 of its 30 days. Compared with August (32°C (90°F)), September is about as warm; by October highs stay near 30°C (86°F).
- Sunrise (15 September)
- About 06:18
- Sunset (15 September)
- About 18:35
- Daylight
- About 12.2 hours
- Sea
- 27°C (81°F)
Autumn (September–November). Warm seas, few crowds and good hotel rates in September and October; showers and winter surf begin in November.
Crowds and prices
On a 1–5 scale, September rates 2 for crowds (the peak is July at 5) and 2 for hotel prices (highest in July). That makes September one of the better-value months to book.
Events in September
- Aloha Festivals — floral parade and Waikīkī block party (usually September)
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in September
Mild, settled days suit walking, viewpoints and time outdoors.
Beach · Waikīkī
Waikīkī Beach
Free hula shows are held at the Kūhiō Beach Hula Mound on several evenings a week around sunset.
- Time needed
- Half a day
- Cost
- Free
- Iconic
- Free
- Kids
- Outdoors
- Couples
Nature · Diamond Head
Diamond Head (Lēʻahi)
Honolulu's landmark volcanic crater rises behind Waikīkī.
- Time needed
- 2 hours
- Cost
- Low cost
- Iconic
- Views
- Active
- Outdoors
Nature · East Honolulu
Hanauma Bay Nature Preserve
Bring reef-safe sunscreen and your own snorkel gear if you have it, and never stand on the coral.
- Time needed
- Half a day
- Cost
- Mid-priced
- Kids
- Nature
- Outdoors
- Iconic
Beach · Ala Moana
Ala Moana Beach Park and Magic Island
Honolulu's main locals' beach has a long, reef-protected swimming area, shaded lawns for picnics and Magic Island, a man-made peninsula with a calm lagoon ideal for small children.
- Time needed
- 2–3 hours
- Cost
- Free
- Free
- Kids
- Outdoors
- Couples
The sea averages 27°C (81°F) — warm enough to swim. Best beaches near Honolulu.
What to pack
For highs near 31°C, lows near 24°C and 6 wet days: light, breathable clothes, a sun hat and high-factor sunscreen; comfortable walking shoes.
Is September a good time to visit Honolulu?
One of the best months to visit Honolulu, with a notable event on the calendar. The other best months are April–May and October. Compare every month.
Honolulu in other months
Questions travellers ask
+Is September a good time to visit Honolulu?
It is one of the best months to visit Honolulu. Still hot and dry, but crowds thin out after the summer holidays and hotel rates drop.
+How warm is Honolulu in September?
Average highs are around 31°C (88°F) and lows around 24°C (75°F).
+Does it rain a lot in Honolulu in September?
Expect rain on about 6 days of the month.