Hawaii in September
September is one of the best months of the year to visit Hawaii. The islands' quiet secret: summer weather, autumn prices, warm water, and the year's thinnest beaches. Keep an eye on tropical systems.
Weather
Warm and calm seas, highs near 87F (31C)
Crowds
Prices
What's on in September
September, primarily on Oahu
Aloha Festivals. A statewide celebration of Hawaiian culture with a floral parade and free community events, landing conveniently in the best-value month.
Things to do in Hawaii
- 1
Snorkel a leeward reef. Morning is the calm, clear window nearly everywhere. Book protected spots like Hanauma Bay or a Molokini boat trip ahead; both cap daily visitors.
- 2
Haleakala sunrise or sunset. Sunrise entry requires an advance reservation with the park. Sunset needs no reservation and is nearly as good, with a fraction of the alarm-clock pain. official site ↗
- 3
Road to Hana. Leave by 7am, pick five stops instead of twenty, and consider staying a night in Hana to have the coast after the day-trippers leave.
- 4
Hawaii Volcanoes National Park. Whether lava is visibly flowing varies month to month and year to year. The crater rim, steam vents, and lava tube deliver regardless; check park alerts for current activity. official site ↗
- 5
Pearl Harbor. Reserve USS Arizona Memorial tickets ahead; walk-up availability is limited. Give it a half day and go early. official site ↗
- 6
Watch winter surf on the North Shore. From roughly November through February, giant swells hit Oahu's north side and the world's best surfers follow. Free, unforgettable, and strictly a spectator sport for visitors.
- 7
Na Pali Coast, Kauai. See it by boat tour in the calmer summer months, by air year-round, or on foot via the Kalalau Trail's day-hike section, which requires a Haena State Park reservation.
- 8
A proper luau. The good ones book out weeks ahead in peak season. Look for shows that lead with hula and history rather than just the buffet.
Beat the crowds
- →Travel in May or September through October. These months move the needle more than any tactic inside a peak-season trip can.
- →Do famous spots at dawn: Hanauma Bay, Lanikai, the Pipeline overlooks, and Haleakala all belong to early risers, and Hawaii's early sunsets make dawn starts easier than they sound.
- →Reserve the capped attractions the moment your dates are set: Hanauma Bay, Haena State Park and the Kalalau day hike, Haleakala sunrise, and Pearl Harbor all limit daily entries.
Know before you go
- !Hawaii has no closed season: hotels, restaurants, beaches, and parks run all year. Seasonality here shows up in prices and ocean conditions, not shutters.
- !Winter surf effectively closes north- and west-facing beaches to swimming from roughly November through March. Lifeguarded south-shore beaches stay swimmable; obey posted warnings, because the ocean here is genuinely dangerous when it is up.
- !Several marquee natural sites require advance reservations with limited daily slots: Haleakala sunrise, Haena State Park on Kauai, Hanauma Bay on Oahu, and Diamond Head for non-residents. Book these before you book dinner.
Hawaii in September: quick answers
Is September a good time to visit Hawaii?
September is one of the best months of the year to visit Hawaii. The islands' quiet secret: summer weather, autumn prices, warm water, and the year's thinnest beaches. Keep an eye on tropical systems.
What is the weather like in Hawaii in September?
Warm and calm seas, highs near 87F (31C).
Is Hawaii crowded in September?
September is one of the quieter months in Hawaii; most sights can be done without long waits.
What is happening in Hawaii in September?
Aloha Festivals (september, primarily on oahu).