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Surf Forecasts:
Avalanche surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Saturday 21 Mar 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 normal for this time of year)How big are the waves at Avalanche today?
The current surf forecast for Avalanche at 6AM is: 1.5m 11s primary swell from a North direction (forecast issued at 01:00am March 21). An open ocean swell of 0.6m 12s is not directed at the surf break, a second open ocean swell of 1.0m 5s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 5ft (1.6m) | 11s |
| Afternoon (21 Mar) | 6.5ft (2.0m) | 12s |
| Evening (21 Mar) | 6.5ft (2.0m) | 11s |
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) (?) | 11 | 11 | 11 | 10 | 11 | 12 | 12 | 11 | 11 | 11 | 12 | 11 | 11 | 11 | 14 | 10 | 9 | 10 | 10 | 10 | 10 | 9 | 13 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 515 | 498 | 498 | 495 | 708 | 997 | 1167 | 988 | 894 | 348 | 449 | 292 | 233 | 338 | 261 | 262 | 210 | 233 | 228 | 228 | 194 | 246 | 106 | 194 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross | cross | cross | cross | cross- on | glass | glass | cross | cross- on | cross- on | glass | cross | glass | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 4:10AM 0.24 | 5:20PM 0.45 | 4:45AM 0.18 | 6:17PM 0.46 | 5:27AM 0.13 | 7:25PM 0.45 | ||||||||||||||||||
Low Tide / height (m) | 9:54PM 0.04 | 9:09AM -0.07 | 11:05PM 0.06 | 9:41AM -0.06 | 12:37AM 0.08 | 10:19AM -0.05 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:33 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:44 | - | - | - | - | - | - | - | 6:44 | - |
 | |  |  | | | | | | |  | | | | | | | | | | |  | | | |
Rain (mm) | - | - | 1 | 5 | 4 | 3 | 2 | 3 | 2 | 4 | 6 | 3 | 1 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | - | - | - |
| Temp. °C | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 23 | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 22 |
| Feels °C (?) | 25 | 25 | 26 | 25 | 26 | 26 | 27 | 27 | 26 | 26 | 25 | 25 | 27 | 26 | 27 | 25 | 23 | 23 | 23 | 22 | 22 | 21 | 20 | 20 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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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