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Surf Forecasts:
Avalanche surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Saturday 21 Feb 2026 HSTForecast update in hr min s Forecast update imminent
Avalanche surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Avalanche sea temperature is
24.5° C
(Which is slightly warmer than usual)How big are the waves at Avalanche today?
The current surf forecast for Avalanche at 7AM is: 1.1m 9s primary swell from a Northeast direction (forecast issued at 01:00am February 21). An open ocean swell of 0.4m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Feb) | 3.5ft (1.1m) | 9s |
| Afternoon (21 Feb) | 2.5ft (0.8m) | 9s |
| Evening (21 Feb) | 3ft (0.9m) | 8s |
Table - waves today at Avalanche. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 18 | 18 | 16 | 16 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 183 | 183 | 179 | 183 | 149 | 107 | 95 | 75 | 120 | 120 | 67 | 65 | 64 | 62 | 59 | 76 | 66 | 50 | 107 | 322 | 659 | 1029 | 1400 | 1619 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | glass | glass | off | off | glass | glass | glass | on | on | on | cross- on | cross- on | cross | glass | glass | glass | cross- off | cross- off | cross- off |
High Tide / height (m) | 5:08AM 0.28 | 6:42PM 0.37 | 5:40AM 0.21 | 7:53PM 0.40 | 6:17AM 0.15 | |||||||||||||||||||
Low Tide / height (m) | 10:37PM 0.08 | 10:33AM -0.05 | 12:02AM 0.12 | 11:08AM -0.04 | 2:13AM 0.13 | 11:53AM -0.03 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:56 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:32 | - | - | - | - | - | - | - | 6:32 | - | - | - | - | - | - | - | 6:32 | - |
 |  | |  |  | | | |  |  | |  | | | | | | | | |  | | | | |
Rain (mm) | 3 | 4 | 2 | 3 | 1 | 3 | 4 | 2 | - | - | - | - | - | - | - | 1 | - | - | - | - | - | 1 | 2 | 1 |
| Temp. °C | 21 | 21 | 21 | 21 | 22 | 23 | 22 | 22 | 21 | 21 | 21 | 21 | 23 | 24 | 23 | 22 | 21 | 21 | 20 | 21 | 23 | 22 | 22 | 21 |
| Feels °C (?) | 21 | 21 | 21 | 21 | 23 | 25 | 23 | 23 | 22 | 23 | 23 | 23 | 24 | 24 | 23 | 24 | 22 | 23 | 22 | 23 | 24 | 23 | 23 | 21 |
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Avalanche surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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