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Surf Forecasts:
Avalanche surfForecast / HAW – Oahu / USA
12 Day Weather and Surf, issued 1 am Tuesday 26 Aug 2025 HST
Best Forecast Surf Conditions for Avalanche this week:
The surf forecast for Avalanche over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 30) at 11PM. The primary swell is predicted to be 0.5m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Avalanche in the next 12 days are 0.4m 15s and forecast to arrive on Tuesday (Sep 02) at 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 16s period and expected on Wednesday (Aug 27) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 30th Aug) | 1.5ft (0.5m) 9s |
| Best Surf | 11PM (Sat 30th Aug) | 1.5ft (0.5m) 9s |
| Most Powerful | 8AM (Tue 2nd Sep) | 1.5ft (0.4m) 15s |
Table - best surf conditions forecast for Avalanche over the next 12 days.
Short Range Forecast Mostly dry. Warm (max 28°C on Thu afternoon, min 24°C on Wed night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Fri morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 26 | Wednesday 27 | Thursday 28 | Friday 29 | Saturday 30 | Sunday 31 | Monday 01 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 18 | 18 | 18 | 16 | 8 | 19 | 18 | 18 | 16 | 8 | 8 | 7 | 7 | 10 | 9 | 8 | 8 | 8 | 8 | 7 | 7 |
Wave (?)Graph  | |||||||||||||||||||||
| Energy (?) | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 0 | 0 | 11 | 5 | 4 | 4 | 10 | 60 | 18 | 61 | 47 | 40 | 40 | 37 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | off | glass | cross- off | off | glass | cross- off | off |
High Tide / height (m) | 4:41PM 0.38 | 5:50AM 0.39 | 5:04PM 0.32 | 6:40AM 0.40 | 5:25PM 0.27 | 7:41AM 0.40 | 5:40PM 0.22 | 8:53AM 0.41 | 10:07AM 0.43 | 9:28PM 0.15 | 11:09AM 0.46 | 11:10PM 0.16 | |||||||||
Low Tide / height (m) | 9:46AM 0.14 | 10:07PM 0.06 | 10:42AM 0.18 | 10:30PM 0.07 | 11:57AM 0.21 | 10:55PM 0.08 | 2:02PM 0.21 | 11:28PM 0.09 | 12:19AM 0.10 | 5:59PM 0.15 | 1:37AM 0.10 | 6:13PM 0.12 | 2:58AM 0.09 | ||||||||
Tuesday 26 | Wednesday 27 | Thursday 28 | Friday 29 | Saturday 30 | Sunday 31 | Monday 01 | |||||||||||||||
| Sunrise | 6:13 | - | - | 6:13 | - | - | 6:13 | - | - | 6:13 | - | - | 6:15 | - | - | 6:15 | - | - | 6:15 | - | - |
| Sunset | - | 6:53 | - | - | 6:52 | - | - | 6:52 | - | - | 6:51 | - | - | 6:50 | - | - | 6:49 | - | - | 6:49 | - |
 | |  |  | |  | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 28 | 25 | 27 | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 25 |
| Feels °C (?) | 27 | 26 | 25 | 27 | 26 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 26 | 26 | 28 | 28 | 27 | 27 | 29 | 26 |
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Recent Eyeball Surf Reports for HAW - Oahu
Continuing clean conditions at Avalanche (calm at Wheeler Air Force Base/oahu Airport 17 km from Avalanche). 0.3m 9s swell from the W to make surfable waves.
17 km away, 2 h 1 min ago
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.
Information about the Avalanche Surf forecast
The above surf forecast table for Avalanche provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Avalanche can be found by selecting the local surf guide option on the grey menu. Our Avalanche surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Avalanche) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Avalanche may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Avalanche is 14 km (9 miles) from Wahiawa. If you plan a vacation in Oahu, look for hotels and other accommodation in Wahiawa. Wahiawa has rooms for a wide range of budgets as well as car hire and transport links.
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