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Avalanche surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Sunday 17 May 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
25.3° C
(Which is normal for this time of year)How big are the waves at Avalanche today?
The current surf forecast for Avalanche at 7AM is: 0.6m 10s primary swell from a North-northwest direction and 0.8m 7s secondary swell from a Northeast direction (forecast issued at 01:00am May 17). The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 2ft (0.6m) | 10s |
| Afternoon (17 May) | 1.5ft (0.5m) | 10s |
| Evening (17 May) | 1.5ft (0.5m) | 21s |
Table - waves today at Avalanche. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Sun afternoon. Warm (max 26°C on Sun morning, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | ||||||||||||||||||||||
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 | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NE 8 | SW 21 | NE 8 | NE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | NE 6 | NW 11 | SSW 18 | NNW 12 | NNW 11 | NNW 11 | NNW 11 | |
69 | 69 | 69 | 68 | 56 | 51 | 224 | 63 | 86 | 84 | 79 | 77 | 71 | 69 | 65 | 59 | 58 | 47 | 60 | 0 | 90 | 75 | 76 | 76 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 2:55AM0.13m | 4:02PM0.61m | 3:47AM0.11m | 4:52PM0.60m | 4:46AM0.09m | 5:44PM0.57m | ||||||||||||||||||
Low Tide | 7:21AM-0.10m | 10:30PM0.01m | 8:03AM-0.09m | 11:31PM0.00m | 8:49AM-0.05m | |||||||||||||||||||
 |  |  |  |  | | |  |  | | | | | | | | | | | | | | | | |
 | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:04 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:05 | — | — |
— | — | — | — | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 24 | 25 | 26 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 |
26 | 27 | 27 | 28 | 28 | 27 | 26 | 24 | 24 | 24 | 24 | 25 | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 24 | 23 | 23 | |
Swell 1 Height (m) Direction Period (s) | NE 7 | NNE 7 | NE 7 | NNE 6 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | NE 8 | NE 8 | NE 7 | NE 7 | SSW 14 | NE 7 | SSW 14 | SSW 14 | NE 6 | NE 6 | SSW 14 | NE 7 | SSW 14 | SSW 15 | SSW 15 | SSW 15 |
 kJ | 65 | 34 | 65 | 23 | 246 | 249 | 246 | 242 | 86 | 84 | 79 | 77 | 229 | 69 | 163 | 161 | 58 | 47 | 175 | 44 | 178 | 246 | 249 | 246 |
Swell 2 Height (m) Direction Period (s) | NNW 10 | SSW 14 | NNW 10 | NNW 10 | NE 8 | NE 8 | NE 8 | NE 8 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 19 | SSW 14 | SSE 10 | NW 12 | SSW 14 | SSW 14 | SSW 18 | SSW 14 | NNW 12 | NNW 11 | NNW 11 | NNW 11 |
| kJ | 69 | 138 | 69 | 68 | 50 | 51 | 63 | 63 | 239 | 233 | 233 | 233 | 251 | 168 | 38 | 35 | 161 | 163 | 273 | 175 | 90 | 75 | 76 | 76 |
Swell 3 Height (m) Direction Period (s) | SSE 11 | NNW 10 | SSE 7 | SSW 15 | NNW 10 | NNW 10 | SW 21 | NNW 9 | SSE 7 | SSE 7 | SSE 7 | SSW 19 | SSE 10 | SSW 19 | NW 12 | SSE 7 | SSW 17 | SSW 17 | NW 11 | SSW 18 | SSW 18 | SE 7 | SSE 10 | SSE 10 |
| kJ | 71 | 69 | 35 | 131 | 56 | 38 | 224 | 35 | 17 | 16 | 9 | 251 | 39 | 212 | 37 | 9 | 92 | 97 | 60 | 207 | 174 | 13 | 36 | 35 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | NE 7 | ENE 8 | NE 7 | NE 6 | — | — | NE 6 | — | NE 6 | NE 6 | ENE 6 | ENE 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 71 | 197 | 65 | 59 | — | — | 43 | — | 43 | 51 | 74 | 86 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 6 | 5 | 14 | 14 | 14 | 14 | 14 | 8 | 8 | 6 | 14 | 6 | 14 | 14 | 14 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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