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
Today
15
0
Poor
3.0m
@11s
34km/h
Mon
16
56
Fair
2.5m
@12s
17km/h
Tue
17
88
Firing
2.9m
@14s
10km/h
+7
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Today's Conditions

Swell
3.0m
W(280°)
Score: 0/25
Period
11s
Medium period swell
Score: 8/25
Wind
34km/h
SW(235°)
Score: 3/25
Weather
24°C
0.1mm88%
Windswell Component
1.6mWSW@5s
Secondary Swell
1.0mN
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
afternoon

Location & Conditions

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

Tide Times

1:06 am
High tide - 1.04m
8:15 am
Low tide - 0.56m
12:45 pm
High tide - 0.67m
6:06 pm
Low tide - 0.45m
Times shown in spot-local time.

📊 Buoy ValidationBuoy Data

NW Hawaii

349 km away

Source: noaa

Forecast Validation
Buoy observed: 0.0m
Forecast error: ±3.0m

Strike Score Breakdown

0
Poor
Components
Swell Direction4/25
Swell Size0/25
Swell Period8/25
Wind3/25
Raw Score15/100
Adjustments
🌊💨 Windswell-3
⚠️ Weak Component-15
📉 Undersized Swell-9
🚫 Undersized Capmax 15
Adjusted Score0/100
Confidence
Multiplier×1.00
Final Score0
👥 Spring Break

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°
Best window
morning

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

👥 Spring Break (Mar 14Mar 22) — expect extra crowds

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