This is a regional read for the whole north shore of Oahu — global wave model with public buoys nearby to sanity-check it. Mornings lean toward cross-shore winds (100% of the morning windows with data); afternoons lean toward cross-shore winds (100%). Confidence reads "rough estimate" for every day shown — treat this as a trend, not a plan.
Board ranges below are each board's full min→max spectrum from the Quivr catalog — the same chart the app draws — and "fits" counts how many of this week's half-day windows a board's wave and power windows overlap. Nothing here is a guess about a particular beach.
Estimates come from a global ocean wave model sampled offshore and translated into ranges. Actual size varies from beach to beach along this stretch; sheltered spots run smaller. Reads describe the whole coast, not one break — check wind and tide at your spot before paddling out. Reads are refreshed weekly on this page and several times a day in the Quivr app, which also matches each day against the boards in your own quiver. Notes on this week's data: The main swell comes from a direction this coast is largely shielded from. Size is a rough guess and likely smaller than open-ocean numbers suggest. Most of the wave energy is local wind chop rather than swell — expect a disorganised, weak surface.
Day by day: Sep 21–27, 2026
Morning is 6am–noon, afternoon is noon–7pm local. Words come straight from the regional read; "No data" means the wave model had no hours for that window.
| Day | Morning | Afternoon | Confidence |
|---|---|---|---|
| Mon Sep 21 | Knee- to chest-high · mellow, not much push · strong cross-shore wind — some texture | Knee- to chest-high · mellow, not much push · moderate cross-shore wind — some texture | Rough estimate |
| Tue Sep 22 | Knee- to chest-high · mellow, not much push · moderate cross-shore wind — some texture | Knee- to chest-high · mellow, not much push · moderate cross-shore wind — some texture | Rough estimate |
| Wed Sep 23 | Knee- to head-high · mellow, not much push · strong cross-shore wind — some texture | Knee- to head-high · mellow, not much push · strong cross-shore wind — some texture | Trend only |
| Thu Sep 24 | Knee- to head-high · mellow, not much push · strong cross-shore wind — some texture | Waist- to head-high · mellow, not much push · strong cross-shore wind — some texture | Trend only |
| Fri Sep 25 | Waist- to head-high · mellow, not much push · strong cross-shore wind — some texture | Waist- to overhead · moderate push · strong cross-shore wind — some texture | Trend only |
| Sat Sep 26 | Waist- to overhead · moderate push · strong cross-shore wind — some texture | Waist- to overhead · moderate push · strong cross-shore wind — some texture | Trend only |
| Sun Sep 27 | Overhead to double-overhead · solid push · strong cross-shore wind — some texture | Overhead to double-overhead · solid push · strong cross-shore wind — some texture | Rough estimate |
Boards that fit the north shore of Oahu this week
| Board | Fits | Wave size | Power | Skill |
|---|---|---|---|---|
| Kazuma Surfboards Kazuma Classic | 14 of 14 windows | Knee-high → double-overhead+ | Moderate | Beginner-friendly to intermediate |
| Haydenshapes Hypto Krypto Twin Pin FutureFlex | 14 of 14 windows | Waist-high → double-overhead+ | Moderate | Beginner-friendly to advanced |
| Channel Islands Twin Pin | 14 of 14 windows | Waist-high → double-overhead+ | Moderate | Intermediate to advanced |
| Haydenshapes Hypto Krypto | 14 of 14 windows | Waist-high → double-overhead+ | Moderate | Beginner-friendly to intermediate |
| Slater Designs Sci-Fi 2.0 | 14 of 14 windows | Waist-high → overhead | Moderate | Intermediate to advanced |
| Webber Surfboards Fatburner | 14 of 14 windows | Knee-high → double-overhead+ | Moderate | Intermediate to advanced |
| Tomo Surfboards Delta X | 14 of 14 windows | Chest-high → double-overhead+ | Moderate | Intermediate to advanced |
The picks, in order
1. Kazuma Surfboards Kazuma Classic
Kazuma Surfboards Kazuma Classic runs knee-high to double-overhead+; that wave window overlaps every one of the 14 half-day windows we have data for this week. Its moderate power midpoint is firmer than the week's typical push, so it comes alive on the windows with more push. A longboard with a beginner-friendly to intermediate skill window.
Quivr catalog read: The Kazuma Classic is perfect for surfers of all skill levels, providing a smooth ride and responsive turns.
Category: Longboard · Catalog ability: beginner
2. Haydenshapes Hypto Krypto Twin Pin FutureFlex
Haydenshapes Hypto Krypto Twin Pin FutureFlex runs waist-high to double-overhead+; that wave window overlaps every one of the 14 half-day windows we have data for this week. Its moderate power midpoint is firmer than the week's typical push, so it comes alive on the windows with more push. A hybrid with a beginner-friendly to advanced skill window.
Quivr catalog read: The Hypto Krypto Twin Pin excels in a variety of conditions, making it suitable for surfers of all skill levels.
Category: Hybrid
3. Channel Islands Twin Pin
Channel Islands Twin Pin runs waist-high to double-overhead+; that wave window overlaps every one of the 14 half-day windows we have data for this week. Its moderate power midpoint is firmer than the week's typical push, so it comes alive on the windows with more push. A twin fin with an intermediate to advanced skill window.
Quivr catalog read: The Twin Pin is a versatile twin-fin board that excels in a variety of wave conditions, from small to overhead.
Category: Twin fin · Pintail · Catalog ability: intermediate · 4.0★ from 1 Quivr rating
4. Haydenshapes Hypto Krypto
Haydenshapes Hypto Krypto runs waist-high to double-overhead+; that wave window overlaps every one of the 14 half-day windows we have data for this week. Its moderate power midpoint is firmer than the week's typical push, so it comes alive on the windows with more push. A hybrid with a beginner-friendly to intermediate skill window.
Quivr catalog read: The Hypto Krypto excels in a variety of conditions, making it ideal for both beginners and advanced surfers.
Category: Hybrid · 5.0★ from 17 Quivr ratings
5. Slater Designs Sci-Fi 2.0
Slater Designs Sci-Fi 2.0 runs waist-high to overhead; that wave window overlaps every one of the 14 half-day windows we have data for this week. Its moderate power midpoint is firmer than the week's typical push, so it comes alive on the windows with more push. A hybrid with an intermediate to advanced skill window.
Quivr catalog read: The Sci-Fi 2.0 excels in a variety of conditions, handling waves up to double overhead while also performing well in smaller, flatter surf.
Category: Hybrid · Double bat tail · Catalog ability: intermediate
6. Webber Surfboards Fatburner
Webber Surfboards Fatburner runs knee-high to double-overhead+; that wave window overlaps every one of the 14 half-day windows we have data for this week. Its moderate power midpoint is firmer than the week's typical push, so it comes alive on the windows with more push. A small-wave shortboard with an intermediate to advanced skill window.
Quivr catalog read: The Webber Fatburner is perfect for intermediate to advanced surfers looking for a buoyant board that excels in small to medium-sized waves.
Category: Small-wave shortboard · Swallow tail · Catalog ability: intermediate
7. Tomo Surfboards Delta X
Tomo Surfboards Delta X runs chest-high to double-overhead+; that wave window overlaps every one of the 14 half-day windows we have data for this week. Its moderate power midpoint is firmer than the week's typical push, so it comes alive on the windows with more push. A performance shortboard with an intermediate to advanced skill window.
Quivr catalog read: The Delta X is designed for high performance surfing, offering exceptional speed and maneuverability.
Category: Performance shortboard · Catalog ability: intermediate
Best fit by shape this week
One board per shape, chosen by how many of this week's 14 windows its wave and power windows overlap. Only shapes that overlap at least half the week are listed.
| Shape | Board | Fits | Wave size | Power |
|---|---|---|---|---|
| Shortboard | Haydenshapes Hypto Krypto Twin Pin FutureFlex | 14 of 14 windows | Waist-high → double-overhead+ | Moderate |
| Groveler | Webber Surfboards Fatburner | 14 of 14 windows | Knee-high → double-overhead+ | Moderate |
| Fish | Lost / Mayhem RNF 96 | 12 of 14 windows | Knee-high → overhead | Moderate |
| Twin fin | Channel Islands Twin Pin | 14 of 14 windows | Waist-high → double-overhead+ | Moderate |
| Midlength | Firewire Boss Up 2025 | 14 of 14 windows | Waist-high → overhead | Moderate |
| Longboard | Kazuma Surfboards Kazuma Classic | 14 of 14 windows | Knee-high → double-overhead+ | Moderate |
| Step-up | TC Surfboards Missing Link | 14 of 14 windows | Chest-high → overhead | Moderate |
What this week asks of a board on the north shore of Oahu
The week spreads from knee-high to double-overhead, so a single board with a wide wave window covers more sessions than a specialist. If you own two boards, split them: one for the smallest windows and one for the double-overhead ones.
Most windows read "mellow, not much push" for push. A board's power midpoint tells you where it will feel alive: mellower boards on the softer windows, firmer boards when the push is there. The table shows each board's own midpoint so the call is yours.
Already own one of these?
Add it to your quiver in Quivr and the Home tab does this matching for you — every day, against your own boards, for the coast you pick. If none of your boards overlap a window, it says so rather than forcing a pick.
Shopping instead? Open two of the picks above in Compare and read the low end of the wave-size range first — on a knee-high week that decides whether a board gets used.
Compare these picks head to head
Live Quivr comparison pages for pairs in this list — same spectra, side by side:
FAQ
How big will the surf be on the north shore of Oahu this week?
Across Sep 21–27, 2026 the regional read runs knee-high to double-overhead. The most size shows Sun Sep 27 morning, overhead to double-overhead (rough estimate); the smallest window is Tue Sep 22 afternoon, knee- to chest-high. Confidence reads "rough estimate" for every day shown — treat this as a trend, not a plan. Sheltered beaches along this stretch run smaller than the read.
Which surfboards fit the north shore of Oahu this week?
Kazuma Classic, Hypto Krypto Twin Pin FutureFlex, Twin Pin overlap the most of this week's 14 surf windows on catalog wave-size and power spectra; the shapes that fit best are longboard, hybrid and twin fin. Open any of them in Quivr to see the full range chart and compare two side by side.
Which day has the most size on the north shore of Oahu?
Sun Sep 27 morning, overhead to double-overhead (rough estimate). Size builds Wed, Thu, Fri and Sun. Mornings lean toward cross-shore winds (100% of the morning windows with data); afternoons lean toward cross-shore winds (100%).
Does this apply to my exact spot?
No single spot is named or predicted here. The read describes the north shore of Oahu as a whole — a stretch of coast facing roughly the same direction. Estimates come from a global ocean wave model sampled offshore and translated into ranges. Actual size varies from beach to beach along this stretch; sheltered spots run smaller. Reads describe the whole coast, not one break — check wind and tide at your spot before paddling out.
How often is this page updated?
Every week, with the same seven-day regional read the Quivr app shows on its Home tab. The app refreshes several times a day and also tells you which board in your own quiver fits each day.