Reef
left
Level 7/10

Cannons

North Shore, Kauai, USA (HI)
🪸Sharp reef⚠️Shallow👊Localism

Cannons is the equally hollow and shallow left on the other side of Ha'ena Bay from Tunnels. A shorter paddle than its neighbor, it delivers powerful barrels in a breathtaking setting. Very localized.

3-Day Forecast
Wed
29
17
Poor
1.1m
@10s
18km/h
Today
30
26
Poor
1.5m
@10s
21km/h
Fri
1
0
Poor
1.4m
@10s
21km/h
+7
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Today's Conditions

Swell
1.1m
NNW(327°)
Score: 5/25
Period
10s
Medium period swell
Score: 6/25
Wind
18km/h
E(79°)
Score: 1/25
Weather
24°C
0.3mm46%
Windswell Component
0.9mENE@4s
Secondary Swell
0.7mENE
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 14 km/h E|PM: 19 km/h ENE
Lighter winds early (14 km/h)
Tide at 7am (0.3m)

Location & Conditions

Loading map...
0°45°90°135°180°225°270°315°NESW
Swell
Wind
View in OpenStreetMap
Showing forecast for today

Tide Times

7:00 am
Low tide - 0.26m
2:15 pm
High tide - 0.78m
8:30 pm
Low tide - 0.46m
Times shown in spot-local time.

📊 Buoy ValidationBuoy Data

NW Hawaii

349 km away

Source: noaa

Forecast Validation
Buoy observed: 0.0m
Forecast error: ±1.1m

Strike Score Breakdown

17
Poor
Components
Swell Direction23/25
Swell Size5/25
Swell Period6/25
Wind1/25
Raw Score35/100
Adjustments
🌊💨 Windswell-5
⚠️ Weak Component-5
📉 Undersized Swell-8
🚫 Undersized Capmax 64
Adjusted Score17/100
Confidence
Multiplier×1.00
Final Score17
🌊💨 Windswell

Spot Details

Swell Requirements

Optimal direction
NNW (330°)
Direction range
300° - 360°
Size range
1.2m - 3m
Ideal size
2.5m
Height multiplier
0.97×
Ideal period
14s+

Wind Requirements

Optimal direction
SSW (200°)
Offshore range
190° - 250°

Tide Requirements

Optimal tide
mid

Water temp

25°C

Wetsuit

Boardshorts / Rashguard

Bottom

Reef

Max wave face

4m+

Board

Shortboard

Consistency

6/10

Difficulty

7/10

Crowd level

4/10

Access: Beach access at Ha'ena Beach Park. Shorter paddle than Tunnels.

Best Season

Peak: Nov, Dec, Jan, Feb, Mar

Nov-Mar. Other side of Ha'ena Bay from Tunnels. Equally hollow left.

Getting There

Airport
LIH
Drive time
45 min
Data quality
verified

Strike Log

Community Discussion