This is a regional read for the whole San Luis Obispo County coast — global wave model checked against nearby live buoys and a coastal wave model. Mornings lean toward cross-shore winds (86% of the morning windows with data); afternoons lean toward cross-shore winds (100%). Confidence is reasonable for the first 2 days and drops to "rough estimate" after that.
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 arrives at an angle to this coast, so expect the smaller end of the range on most beaches. 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 | Chest- to head-high · mellow, not much push · light cross-shore wind | Waist- to chest-high · mellow, not much push · light cross-shore wind | Reasonable estimate |
| Tue Sep 22 | Waist- to chest-high · mellow, not much push · light cross-shore wind | Chest- to head-high · mellow, not much push · moderate cross-shore wind — some texture | Reasonable estimate |
| Wed Sep 23 | Chest- to head-high · mellow, not much push · moderate cross-shore wind — some texture | Chest- to overhead · moderate push · moderate cross-shore wind — some texture | Rough estimate |
| Thu Sep 24 | Waist- to head-high · mellow, not much push · light wind | Waist- to head-high · mellow, not much push · light cross-shore wind | Rough estimate |
| Fri Sep 25 | Waist- to head-high · mellow, not much push · light cross-shore wind | Chest- to head-high · mellow, not much push · strong cross-shore wind — some texture | Trend only |
| Sat Sep 26 | Head- to overhead · moderate push · light cross-shore wind | Head- to overhead · moderate push · moderate cross-shore wind — some texture | Trend only |
| Sun Sep 27 | Chest- to head-high · mellow, not much push · light cross-shore wind | Chest- to head-high · mellow, not much push · strong cross-shore wind — some texture | Trend only |
Boards that fit the San Luis Obispo County coast this week
| Board | Fits | Wave size | Power | Skill |
|---|---|---|---|---|
| Channel Islands CI Mid | 14 of 14 windows | Waist-high → double-overhead+ | Moderate | Beginner-friendly to intermediate |
| Christenson Osprey | 14 of 14 windows | Waist-high → double-overhead+ | Moderate | Beginner-friendly to advanced |
| Webber Surfboards Fatburner | 14 of 14 windows | Knee-high → double-overhead+ | Moderate | Intermediate to advanced |
| Haydenshapes Hypto Krypto | 14 of 14 windows | Waist-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 |
| TC Surfboards Twinnister | 14 of 14 windows | Waist-high → overhead | Moderate | Intermediate to advanced |
| Firewire Revo Max | 14 of 14 windows | Waist-high → overhead | Soft | Beginner-friendly to intermediate |
The picks, in order
1. Channel Islands CI Mid
Channel Islands CI Mid 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 midlength with a beginner-friendly to intermediate skill window.
Quivr catalog read: The CI Mid is a versatile midlength board that excels in shoulder-high to nearly double overhead waves.
Category: Midlength · Catalog ability: intermediate · 4.0★ from 1 Quivr rating
2. Christenson Osprey
Christenson Osprey 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 midlength with a beginner-friendly to advanced skill window.
Quivr catalog read: The Osprey is a versatile board that excels in a variety of surf conditions, offering speed and control.
Category: Midlength · Catalog ability: intermediate
3. 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
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. 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
6. TC Surfboards Twinnister
TC Surfboards Twinnister 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 twin fin with an intermediate to advanced skill window.
Quivr catalog read: The Twinnister is a high-performance twin fin that feels like a shortboard while offering the speed and maneuverability of a twin.
Category: Twin fin · Catalog ability: intermediate
7. Firewire Revo Max
Firewire Revo Max runs waist-high to overhead; that wave window overlaps every one of the 14 half-day windows we have data for this week. Its soft power midpoint sits close to the week's typical push. A midlength with a beginner-friendly to intermediate skill window.
Quivr catalog read: The Revo Max excels in a wide range of conditions, from small waves to powerful surf.
Category: Midlength · Catalog ability: intermediate · 4.9★ from 13 Quivr ratings
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 | Christenson Osprey | 14 of 14 windows | Waist-high → double-overhead+ | Moderate |
| Groveler | Webber Surfboards Fatburner | 14 of 14 windows | Knee-high → double-overhead+ | Moderate |
| Fish | Tomo Surfboards El Tomo Grande | 14 of 14 windows | Chest-high → double-overhead+ | Moderate |
| Twin fin | TC Surfboards Twinnister | 14 of 14 windows | Waist-high → overhead | Moderate |
| Midlength | Channel Islands CI Mid | 14 of 14 windows | Waist-high → double-overhead+ | Moderate |
| Longboard | TC Surfboards Retro Single Fin | 14 of 14 windows | Knee-high → overhead | Moderate |
| Step-up | Panda Surfboards Middle Age Rage | 14 of 14 windows | Waist-high → double-overhead+ | Soft |
What this week asks of a board on the San Luis Obispo County coast
The week spreads from waist-high to 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 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 waist-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 San Luis Obispo County coast this week?
Across Sep 21–27, 2026 the regional read runs waist-high to overhead. The most size shows Sat Sep 26 afternoon, head- to overhead (trend only); the smallest window is Mon Sep 21 afternoon, waist- to chest-high. Confidence is reasonable for the first 2 days and drops to "rough estimate" after that. Sheltered beaches along this stretch run smaller than the read.
Which surfboards fit the San Luis Obispo County coast this week?
CI Mid, Osprey, Fatburner overlap the most of this week's 14 surf windows on catalog wave-size and power spectra; the shapes that fit best are midlength, small-wave shortboard and hybrid. 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 San Luis Obispo County coast?
Sat Sep 26 afternoon, head- to overhead (trend only). Size builds Tue and Sat and eases Thu. Mornings lean toward cross-shore winds (86% 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 San Luis Obispo County coast 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.