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Surf Forecasts:
Avalanche surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 pm Friday 20 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
24.4° C
(Which is normal for this time of year)How big are the waves at Avalanche today?
The current surf forecast for Avalanche at 6PM is: 1.3m 11s primary swell from a North direction (forecast issued at 01:00pm March 20). An open ocean swell of 0.7m 13s is not directed at the surf break, a second open ocean swell of 1.2m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Mar) | 3.5ft (1.0m) | 10s |
| Afternoon (20 Mar) | 4ft (1.2m) | 11s |
| Evening (20 Mar) | 4.5ft (1.4m) | 11s |
Table - waves today at Avalanche. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | |||||||||||||||||||||
| 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 | 11 PM | 2 AM | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 12 | 12 | 11 | 11 | 11 | 10 | 11 | 15 | 11 | 11 | 10 | 10 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 202 | 294 | 446 | 465 | 505 | 566 | 566 | 562 | 621 | 1098 | 1278 | 1104 | 894 | 436 | 313 | 279 | 272 | 272 | 274 | 346 | 320 | 170 | 168 | 168 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross- off | cross | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross- off | cross | cross | cross | cross | cross- off | cross- off | cross- off | glass | glass |
High Tide / height (m) | 4:30PM 0.43 | 4:10AM 0.24 | 5:20PM 0.45 | 4:45AM 0.18 | 6:17PM 0.46 | 5:27AM 0.13 | ||||||||||||||||||
Low Tide / height (m) | 8:41AM -0.07 | 9:54PM 0.04 | 9:09AM -0.07 | 11:05PM 0.06 | 9:41AM -0.06 | 12:37AM 0.08 | ||||||||||||||||||
Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:33 |
| Sunset | - | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:44 | - | - | - | - | - |
 | | |  | | | | | | | | | |  | | | | | | | | | |  | |
Rain (mm) | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 3 | 3 | 1 | - | - | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | - |
| Temp. °C | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 24 | 25 | 25 | 24 | 24 | 24 | 24 | 23 | 23 | 22 | 23 | 24 | 23 | 23 | 23 | 22 | 23 |
| Feels °C (?) | 24 | 24 | 24 | 25 | 26 | 26 | 25 | 27 | 27 | 27 | 25 | 26 | 26 | 26 | 25 | 24 | 22 | 25 | 26 | 25 | 25 | 25 | 24 | 25 |
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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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