Chun’s Reef
North Shore, Oʻahu, Hawaiʻi · Reef break
Local time — · Sunrise 06:40 · Sunset 17:53
Reading the ocean.
SWELLRADAR is requesting a verified marine run for Chun’s Reef.
Spot intelligence.
Chun’s has a small-surf learning area inside, but this coastal forecast also represents an exposed reef. The local school chooses lessons from the day’s conditions. Its inside lesson setting is not a promise that the outer lineup or a large winter swell suits beginners.
Profile source · Lani Nalu Surf Co. · Chun’s Reef guideProfile sources & limits
Reviewed 19 Oct 2026 · not observation-validated
Published sources reviewed by SWELLRADAR, not validation against measured breaking waves. Swell-from and wind-from axes are independent qualitative ranking inputs, not surveyed shoreline bearings. The inherited generic 0.6–3.0 m offshore-model height bands are unchanged: they are not measured local surf limits, safe learner ranges or wave-face conversions. Requested offshore points are not takeoffs. No preferred tide motion, minimum reef depth or safe entry is inferred. Check the actual section, currents and your ability locally. Lani Nalu distinguishes its sandy inside lesson area from the more active outer reef. Intermediate is a conservative grade for this unsplit forecast profile, not a claim that supervised learning never occurs here. Surf-Forecast’s specific Chuns Reef page, not the combined Chuns/Jocks guide, supplies N swell, SE wind and all-stages tide guidance.
- Lani Nalu Surf Co. · Chun’s Reef guide
Local operator’s distinction between inside lessons and the active outer reef; lesson suitability assessed on the day
- Surf-Forecast · Chuns Reef
Exposed Oʻahu reef, N swell, SE wind, rocks and all-stages tide response
Source-informed axes
Swell axis N · 0°
Offshore wind from SE · Intermediate profile
Wave
Reef peaks · separate inside lesson area
Reef and rocks · sandy inside lesson section
Swell window
N · exposed outer reef
0.6–3.0 m offshore ranking band
Clean wind
SE · light offshore
Applied to wind scoring
Tide window
All stages · section-dependent
No tide phase affects scoring
Field guide
Read the break.
Character · setup · local read
Field guide
Read the break.
Character
01Chun’s Reef is defined by reef peaks · separate inside lesson area over reef and rocks · sandy inside lesson section. The shape can change with swell angle, period and the active section, so the live score should always be paired with a visual check from shore.
Best setup
02N · exposed outer reef swell, se · light offshore and all stages · section-dependent form the profile baseline. SWELLRADAR retains 0.6–3.0 m as an offshore-model ranking band, not a measured local surf limit or a breaking-wave prediction.
Lineup read
03Choose a peak that matches your experience and reassess it as tide and crowd change. Pay particular attention to exposed outer-reef sets, shallow rocks, busy lesson and takeoff areas. Local signs and advice always take priority.
Know before you paddle
Live conditions and local advice always override this profile.
Optional community layerRecent surfer reportsVoluntary and potentially incomplete. Not used for the forecast or Surf Score.
The break
Reef break
Intermediate. Works best with N · exposed outer reef swell.
Timing
SE · light offshore
All stages · section-dependent. Re-check local observations and the lineup before you paddle out.
Data note
Model data unavailable
SWELLRADAR withholds numerical conditions, scores and surf windows until a quality-checked marine forecast is available.