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.
Model forecast for swell, wind and tide.
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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.
Avalanche is a big-wave spot in North Shore, Oahu, USA, that mostly breaks left over a reef bottom. On its biggest days it can hold faces of around 12m. It's fickle (consistency 2/10), so it's worth jumping on when it does turn on. A step-up or gun is the usual call.
Avalanche picks up swell from the WNW round to the NNW, and it's best when it's coming straight out of the NW. It starts working at around 4.6m and keeps going up to about 9.1m, with the sweet spot around 5.9 to 7.3m. Period matters too: aim for 18s or longer, as anything under 14s tends to be weak. These are the numbers our scoring uses, so treat them as a guide rather than a promise.
A SE wind is dead offshore at Avalanche, and anything from the E round to the S keeps it clean. The morning is typically the best window, roughly 6am to midday. Light winds from other directions can still be fine; strong offshores can make it hard to get into waves.
Avalanche isn't especially fussy about tide and generally works through the cycle, so swell and wind matter more here. Big tides can still change how it breaks, so it's worth checking before you paddle out.
The most reliable run of swell at Avalanche comes Nov to Feb. Nov-Feb. Deepwater outer reef near Haleiwa. Handles massive swells.
The water at Avalanche averages around 25°C, so boardshorts or a rashguard will do. It shifts a few degrees through the year, so check the season before you pack.
No. As a big-wave spot, it's strictly for experienced surfers. The lineup is usually quiet (crowd 2/10). Deepwater outer reef near Haleiwa. Handles massive swells.
The nearest airport on our list is HNL, then it's roughly a 50-minute drive. From there you need a boat to reach the break (we estimate around $150 USD, but confirm with an operator). Paddle or tow-in from Haleiwa area.
The closest breaks we track are Haleiwa (0.8 km), Laniakea (1.5 km) and Chun's Reef (1.8 km), handy when Avalanche isn't working. We track 23 spots around North Shore, Oahu in total.
Peak: Nov, Dec, Jan, Feb
Nov-Feb. Deepwater outer reef near Haleiwa. Handles massive swells.
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