Big Wave
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Level 10/10

Avalanche

North Shore, Oahu, USA (HI)
😮‍💨Hold-downs🏝️Remote

Avalanche is a deepwater outer reef near Haleiwa that handles massive swells when the nearshore breaks max out. It offers big wave left-handers in relatively deep water.

3-Day Forecast
Today
29
0
Poor
0.9m
@11s
20km/h
Thu
30
0
Poor
1.3m
@11s
23km/h
Fri
1
0
Poor
1.3m
@11s
23km/h
+7
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Today's Conditions

Swell
0.9m
NNW(337°)
Score: 0/25
Period
11s
Medium period swell
Score: 2/25
Wind
20km/h
ENE(67°)
Score: 1/25
Weather
25°C
0.1mm20%
Windswell Component
0.6mNE@3s
Secondary Swell
0.5mNNE
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 13 km/h E|PM: 20 km/h ENE
13 km/h vs 20 km/h afternoon

Location & Conditions

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

Tide Times

1:18 am
High tide - 0.59m
7:38 am
Low tide - 0.24m
2:30 pm
High tide - 0.81m
9:15 pm
Low tide - 0.39m
Times shown in spot-local time.

Strike Score Breakdown

0
Poor
Components
Swell Direction12/25
Swell Size0/25
Swell Period2/25
Wind1/25
Raw Score15/100
Adjustments
🌊💨 Windswell-3
⚠️ Weak Component-15
📉 Undersized Swell-11
🚫 Undersized Capmax 15
Adjusted Score0/100
Confidence
Multiplier×1.00
Final Score0

Spot Details

Swell Requirements

Optimal direction
NW (315°)
Direction range
290° - 345°
Size range
4.6m - 9.1m
Ideal size
7.1m
Height multiplier
1.08×
Ideal period
18s+

Wind Requirements

Optimal direction
SE (135°)
Offshore range
90° - 180°

Tide Requirements

Optimal tide
all

Water temp

25°C

Wetsuit

Boardshorts / Rashguard

Bottom

Reef

Max wave face

12m+

Board

Gun / Step-up

Consistency

2/10

Difficulty

10/10

Crowd level

2/10

Access: Paddle or tow-in from Haleiwa area.

Best Season

Peak: Nov, Dec, Jan, Feb

Nov-Feb. Deepwater outer reef near Haleiwa. Handles massive swells.

Getting There

Airport
HNL
Drive time
50 min
Boat required
$150
Data quality
community

Strike Log

Community Discussion