September might be our favorite month to show people around Oʻahu. The mainland kids head back to school, so the beaches breathe a little easier. The water stays warm, the trade winds still cool the afternoons, and the island slides into what we call second summer.
September weather here is close to ideal. Highs land in the mid to upper 80s°F (about 30 to 32°C), the trades keep things comfortable, and rain stays brief on the leeward side. Sunset slips from about 6:45 p.m. early in the month to near 6:15 by the end.
It is also the biggest cultural month of the year on the island. Aloha Festivals turns 80 in 2026, and its three signature events all land in Waikīkī. Add the Okinawan Festival, two home football games, and a pair of ocean and road races, and the calendar fills fast.
These are the dates we would circle.
Related: Things to Do on Oʻahu in August 2026 | Best Time to Visit Hawaiʻi, Month by Month | Best Luaus in Hawaiʻi
Aloha Festivals turns 80
Aloha Festivals started in 1946 as Aloha Week. Eighty years later it is the longest running cultural celebration in the state. It honors Hawaiian music, hula, history, and the spirit of aloha, and every Oʻahu event is free.
The festival began as a way to celebrate Hawaiian traditions after World War II. It grew into a season of hoʻolauleʻa, parades, and royal court ceremonies across the islands. On Oʻahu, the free events stay centered in Waikīkī, which makes them easy to fold into a trip.
Three events anchor the Oʻahu calendar, and they are all worth planning around.
Royal Court Investiture and opening ceremony (September 5)
The season opens with the Royal Court Investiture on Saturday, September 5, from 4 to 6 p.m. A royal court is presented in full regalia, with chant, hula, and lei draped by hand.
It happens at the Royal Grove, the open courtyard inside Royal Hawaiian Center.
📍 Royal Hawaiian Center, 2201 Kalākaua Ave, Honolulu
Get there early for a close view. The grove is small and shaded, and the good spots go fast.
Look for the Aloha Festivals ribbon too. The commemorative ribbon and button change design every year, and buying one helps fund the volunteer-run celebration.
Waikīkī Hoʻolauleʻa (September 19)
The Waikīkī Hoʻolauleʻa is the big one. On Saturday, September 19, Kalākaua Avenue closes to cars and becomes the largest block party in Hawaiʻi.
Food booths line both sides. Live music runs from several stages starting around 6 p.m. and rolling into the night.
Stages stretch along Kalākaua from the Waikīkī gateway toward Kapiʻolani Park. Hula hālau, local bands, and Hawaiian music trade off through the evening while the crowd flows between them.
Come hungry. This is where you graze down the street, plate lunch to malasada to shave ice.
It works for families, though it gets packed. Bring a stroller if you have little ones, and pick a meeting spot in case anyone wanders.
Parking in Waikīkī gets tight and pricey on event nights. We take TheBus or park at Ala Moana Center and walk over. If you would rather sit down for dinner, our Waikīkī restaurant guide has 25 spots worth your time.
Floral Parade (September 26)
Aloha Festivals closes with the Floral Parade on Saturday, September 26, from 9 a.m. to noon. Pāʻū riders on horseback, marching bands, and flower-covered floats roll from Ala Moana Regional Park down Kalākaua Avenue to Kapiʻolani Park.
The pāʻū riders are the highlight. Each island sends a princess and her attendants in flowing, color-coded skirts, a tradition that goes back generations.
Find a shady patch along Kalākaua by 8:30 and you are set. The full lineup lives at alohafestivals.com.
Okinawan Festival (September 5 to 6)
That same weekend, the Hawaiʻi Convention Center fills with taiko drums and the smell of andagi. The Okinawan Festival runs Saturday and Sunday, September 5 and 6, in its 44th year.
📍 Hawaiʻi Convention Center, 1801 Kalākaua Ave, Honolulu
Hours are 10 a.m. to 5 p.m. Saturday and 10 a.m. to 4 p.m. Sunday. A paid early-bird entry opens at 9 a.m. both days if you want first crack at the food lines.
One heads up for 2026: the festival is running a scaled-down layout while the Convention Center renovates its lobby and ballrooms. The food and the culture stay front and center.
The food is the heart of it. Beyond the andagi and soba, look for Okinawan shoyu pork, champuru stir-fry, and pig’s feet soup for the adventurous. Most plates run a few dollars, and general admission is free.
Two stages run all day with eisa drumming, Ryukyu dance, and taiko. There is a country store with Okinawan crafts, plus a cultural tent if you want the history behind the music.
Do not skip the andadog, a sweet Okinawan corn dog you will think about later. Each night ends with a bon dance that pulls the whole hall into a circle.
Many island families trace their history back to Okinawa, and this has been a Labor Day weekend ritual for decades. Details are at okinawanfestival.com.
If bon dance season pulled you in this summer, our bon dance guide covers the etiquette and the every-island schedule.
Rainbow Warriors football comes home
College football is back in Honolulu, and the stadium energy carries across town. The University of Hawaiʻi Rainbow Warriors play two home games in September.
They host UNLV on Saturday, September 5, then New Mexico State on Saturday, September 12. Both kick off at the Clarence T.C. Ching Athletics Complex on the Mānoa campus.
📍 Clarence T.C. Ching Athletics Complex, 1337 Lower Campus Rd, Honolulu
The Ching Complex is home while a new Aloha Stadium gets built. It seats fewer fans and sits closer to the field, so tickets for a good matchup move quick.
The atmosphere is worth it even if you do not follow college ball. The band plays, the crowd waves shakas, and the sunset over the ridgeline behind the field is something else.
Wear green. Get there before kickoff to catch the team entrance and the haʻa, the Hawaiian war dance they perform at midfield. Kickoff times and tickets are at hawaiiathletics.com.
Parking on campus is limited, so give yourself time or take TheBus up University Avenue. Bring a light layer, because Mānoa can send a passing shower even on a clear night.
Two classic races share one Sunday (September 27)
The last Sunday of the month is a big one for anyone who loves the ocean or the open road. Two of Hawaiʻi’s classic endurance events fall on September 27.
Nā Wāhine O Ke Kai
Nā Wāhine O Ke Kai sends crews of six women paddling 41 miles (66 km) across the Kaʻiwi Channel from Molokaʻi to Waikīkī. It is the women’s world championship of long-distance outrigger canoe racing.
The crews launch from Hale O Lono Harbor around 8 a.m. The fastest reach Waikīkī near 1:30 p.m., and the awards follow on the beach around 2:30.
The race has run since 1979 and carries real weight in the paddling world. Crews train all year for this crossing, and the Kaʻiwi Channel can throw big swells and strong wind at them.
Watching the finish costs nothing. Post up near Kaimana Beach and you will feel the sand lean forward as the escort boats round Diamond Head. Race updates are at nawahineokekai.com.
Honolulu Century Ride
The same morning, the Honolulu Century Ride rolls out of Kapiʻolani Park at dawn. It is the oldest and largest cycling event in Hawaiʻi, run by the Hawaiʻi Bicycling League since 1983.
Routes range from 25 to 100 miles (40 to 161 km) along the southeast and windward coast. Riders trace Diamond Head, Sandy Beach, Waimānalo, Kailua, and Kāneʻohe before looping back.
Aid stations line the route with water, snacks, and mechanics if your chain acts up. Even the short loop hands you Diamond Head and a sunrise over the ocean, a fair trade for an early alarm.
This one needs registration. Ride it at your own pace, whether you take on the full 100 miles (161 km) or the 25 mile (40 km) loop. Online sign-up closes in late September, so register early at hbl.org/hcr.
Free things happening all month
You do not need a ticket to enjoy September here. A handful of standbys run every week.
First Friday lights up Chinatown on September 4. Galleries, shops, and eateries stay open late, with art, music, and food trucks filling the blocks around Nuʻuanu Avenue and Hotel Street.
Friday night fireworks go off over the water at the Hilton Hawaiian Village around 7:45 p.m. Watch for free from Waikīkī’s western sand near the lagoon.
The Royal Hawaiian Band plays free concerts most weeks. Look for the Friday show at ʻIolani Palace and a Sunday set at the Kapiʻolani Park Bandstand.
Sunset on the Beach sometimes returns to Queen’s Surf Beach with a giant screen and free movies after dark. It runs on select weekends, so check the City calendar before you plan around it.
Saturday mornings belong to the KCC Farmers Market at Kapiʻolani Community College, from 7:30 to 11 a.m. It is our go-to for a farm breakfast and a bag of local produce.
📍 KCC Farmers Market, 4303 Diamond Head Rd, Honolulu
We mapped more of them in our Hawaiʻi farmers market guide.
Getting around for events
Most September events cluster in Waikīkī and Kapiʻolani Park, so you can walk between a lot of them. For anything farther out, TheBus is affordable and reliable.
Biki, the Honolulu bikeshare, is handy for short hops around town. On big event days, it can beat circling for parking. Rideshare works too, but expect surge pricing when the Hoʻolauleʻa lets out.
Beaches and the outdoors in September
September brings peak beach weather. Water temperatures sit around 81°F (27°C), about as warm as they get all year.
The south shore surf season is winding down. Town breaks like Waikīkī and Ala Moana still throw fun waves, but the big summer swells taper off as the weeks pass.
Late September is when the North Shore wakes up. The first winter swells can arrive by month’s end, so newer surfers should check conditions before paddling out up there.
For easy swimming, the windward side and the Ko Olina lagoons stay calm. For snorkeling, go early before the trades ripple the surface. Newer to the shoreline here? Our guide to Oʻahu’s best beaches sorts them by region.
Tips for visiting Oʻahu in September
A few things worth knowing before you book.
Crowds thin out after Labor Day. Once mainland schools are back in session, the beaches and trails feel roomier, and hotel rates often ease off their summer peak.
September still sits inside Central Pacific hurricane season, which runs June through November. Direct hits on Oʻahu are rare, but keep an eye on the forecast and consider travel insurance.
Book Aloha Festivals weekends ahead. Waikīkī hotels fill for the Hoʻolauleʻa and the Floral Parade, and the rooms nearest Kalākaua go first.
Reserve big-ticket spots early. Hanauma Bay takes online reservations that sell out days ahead, and popular restaurants book up on event weekends.
Pack reef-safe sunscreen and a light rain jacket. Reef-safe is the law in Hawaiʻi, and a quick windward shower can roll through even on a sunny day.
Rent a car if you plan to chase events across the island. For a Waikīkī-only trip, skip it, since event-day parking and traffic can swallow an afternoon.
Circle a weekend, pack light, and come hungry. September on Oʻahu takes care of the rest.
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Bon Dance Season in Hawaiʻi: Schedule and Etiquette
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