Circle island route conditions, fall 2026

What did Hurricane Lowell and Hurricane Nolo do to the circle island route?

Lowell flooded the windward highway for about two hours; Nolo brought wind and rough east-shore surf. Neither left a road on the loop closed.

Lowell brushed the islands as a Category 2 hurricane in early September 2026, passing west of Oahu. On Sunday afternoon, 6 September, flash flooding put about 2.5 feet of water over Kamehameha Highway, and police closed it in both directions between Waikane Valley Road and Waiahole Valley Road for roughly two hours. Waiahole Stream peaked at 16 feet, Hawaii Public Radio reported. That stretch is the windward road every tour drives between the Byodo-In Temple and Kualoa.

The same report listed about 21,000 customers without power, a sand-covered Ala Moana Regional Park and a 48-hour brown water advisory for the whole island. Brown water is storm runoff, and runoff is what guests mean when they report cloudy snorkel spots after a storm.

Nolo stayed far south of the islands in late September. On Oahu it meant a wind advisory with gusts to 55 mph and a high surf advisory for east-facing shores, per Hawaii News Now. The Halona Blowhole and Sandy Beach stretch took the swell. By early October the Star-Advertiser described Nolo as no threat to populated islands, with only rain from its outer bands.

Which parks along the loop are closed in October 2026?

Only one stop that tours use is affected: the upper viewing area of the Makapu'u Lookout, closed 21 October to 4 November 2026.

The Hawaii State Parks notices page (updated 19 October 2026) lists the Makapu'u Lookout repair at Kaiwi State Scenic Shoreline, with limited viewing during the work. Most tours only drive past Makapu'u. A few stop there: The Pineapple EXP van lists 15 minutes at Makapu'u Point, Aloha Sunshine five minutes at the beach below. Expect your guide to swap in another east shore pullout.

On the far west tip, Ka'ena Point State Park has vehicle access again, but the Keawa'ula trail is still closed after storm damage to the road. No circle tour goes there, so it only matters if you planned a hike on a free day.

Are Kamehameha Highway and the North Shore road open?

Yes. The state's highway news for October 2026 has no closures on Kamehameha Highway, the coastal road the whole loop follows.

We read every Oahu item on the HDOT highways news for October 2026: an H-1 rehabilitation in Salt Lake, an off-ramp at Koko Head Avenue, an H-2 lane closure. Nothing on the circle route itself. The Salt Lake work sits on the stretch of H-1 that tours returning from Dole via H-2 use in the late afternoon, so allow for a slow last half hour.

The bigger repair this year was at Waimea Bay. Boulders fell on the highway north of the bay in the April 2026 storm, and HDOT flew in rockfall netting in May and June, aiming to restore the second lane by the end of July (Hawaii News Now). Waimea Valley stayed open throughout. If you drive yourself, look at the HDOT page the night before; tour drivers hear about lane shifts before you do.

One honest caveat. A single rainy afternoon closed the windward highway in September. Another heavy storm can do it again, and the operator decides on the day, not you.

What does winter surf mean for the North Shore stops?

From November the North Shore gets huge swells. Swim and snorkel stops become the lifeguard's call, and some days they are simply off.

The state's ocean safety site puts the north and west shore big-wave season at roughly November through April and warns swimmers of every level to stay out during high surf. The National Weather Service issues a High Surf Advisory at 15 feet and a High Surf Warning at 25 feet for north-facing shores, measured on the wave face. On those days lifeguards post warning signs and can close beaches.

That hits the tours built around a swim. Hawaii Turtle Tours plans an hour of North Shore snorkeling; Nui Tours and Aloha Sunshine snorkel at Pua'ena Point near Haleiwa, which is more sheltered but not immune. Guests report the fallback is a turtle beach or extra time in Haleiwa. Aloha Sunshine's Biggeman wrote in October 2026 that the group "missed the beach because of the high surf" and still called it a great day.

Turtles are never guaranteed, surf or not. If seeing them matters most, read our snorkeling and turtles guide before you choose.

How do tours handle a closed road or a skipped stop?

They reroute and lengthen other stops. Your own safety net is free cancellation up to 24 hours before.

Reviews from August to October 2026 show the pattern. On the Star of Honolulu coach, Angela wrote in October 2026: "We were unable to make it to the North Shore due to a road closure and he made up for it with longer stops elsewhere." On E Noa, James described a storm day in August when "fallen trees closing off many roads" forced the guide to improvise half the itinerary. Cassandra, on the turtle tour, got an extra beach stop because the water was too cloudy to snorkel.

The listings say this up front. Nui Tours warns that certain locations cannot be accessed due to weather, and E Noa operates in all weather. Every tour here allows free cancellation up to 24 hours before the start, so watch the forecast two days out, not on the morning.

Our pick for an unsettled week is the Star of Honolulu deluxe coach. Six fixed stops, a restroom on board and a 90-minute Haleiwa stop that absorbs a skipped beach better than a schedule built on one long swim.

Lunch, Byodo-In and Waimea Valley entry included, so a rainy morning still leaves you a full day of paid-for stops.

★ 4.9 · 9 hours · from $186

Explore the Majestic tour with lunch → Tour details

Where do you check conditions the night before?

Three pages: State Parks notices, HDOT highway news and the beach safety map. Ten minutes covers the whole loop.

• Hawaii State Parks important notices: Makapu'u, Ka'ena, the Pali and Diamond Head.
• HDOT highways news: lane closures on state roads.
• Hawaii Beach Safety: lifeguard reports and surf, updated every 15 minutes from Weather Service forecasts.
• NWS Honolulu surf forecast: swell size by shore for the next days.

A jacket for the Pali, a towel you do not mind getting sandy and some cash for food trucks still matter more than any forecast. Our packing guide has the full list.

Frequently asked questions