Surf Forecasts:
How big are the waves at Avalanche today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 1.5ft (0.5m), 11s period with W swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 1.5ft (0.5m), 10s period with W swell.
- Evening surf: Evening surf (21 Aug, local time) - 1.5ft (0.5m), 10s period with W swell.
The current surf forecast for Avalanche at 1PM is: 0.5m 10s primary swell from a West direction and 0.7m 7s secondary swell from a North-northeast direction (forecast issued at 07:00am August 21). An open ocean swell of 0.7m 17s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 1.5ft (0.5m) | 11s |
| Afternoon (21 Aug) | 1.5ft (0.5m) | 10s |
| Evening (21 Aug) | 1.5ft (0.5m) | 10s |
Table - waves today at Avalanche. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Fri morning, min 25°C on Sun night). Wind will be generally light. | |||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||||||||
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 |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NNE 7 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 11 | NE 7 | W 10 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 12 | WNW 12 | SW 14 | WNW 11 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 41 | 57 | 56 | 50 | 49 | 49 | 49 | 50 | 50 | 51 | 51 | 52 | 57 | 63 | 60 | 125 | 113 | 107 | 113 | 91 | 90 | 97 | 84 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | glassy | glassy | cross-off | cross-off | off | 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 |
High Tide | 11:18AM0.46m | 10:56PM0.16m | 12:07PM0.48m | 11:59PM0.17m | 12:48PM0.50m | ||||||||||||||||||
Low Tide | 6:29PM0.13m | 3:00AM0.08m | 6:49PM0.12m | 4:03AM0.07m | 7:09PM0.10m | ||||||||||||||||||
 |  | |  | |  | | | | | | | | | | | | | | | | | | |
 | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — |
 | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:55 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 28 | 28 | 28 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 25 | 25 |
Feels °C | 29 | 31 | 32 | 32 | 32 | 29 | 27 | 27 | 28 | 27 | 28 | 28 | 27 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 27 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 17 | SW 17 | SW 17 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | WNW 11 | WNW 11 |
| kJ | 364 | 368 | 291 | 281 | 261 | 322 | 322 | 322 | 322 | 326 | 326 | 322 | 251 | 248 | 248 | 212 | 209 | 204 | 201 | 196 | 191 | 85 | 84 |
Swell 2 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | W 11 | W 11 | W 10 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 12 | WNW 12 | SSE 13 | SSW 14 |
| kJ | 41 | 41 | 42 | 42 | 42 | 32 | 37 | 44 | 36 | 35 | 35 | 44 | 57 | 57 | 56 | 125 | 113 | 107 | 113 | 91 | 90 | 98 | 136 |
Swell 3 Height (m) Direction Period (s) | W 9 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | SSE 12 | S 12 | WNW 12 | SSE 12 | S 14 | S 13 | SSE 13 | SSE 13 | SSE 13 | SW 14 | SSE 13 |
| kJ | 27 | 57 | 56 | 50 | 49 | 49 | 49 | 50 | 50 | 51 | 51 | 52 | 50 | 46 | 60 | 50 | 101 | 92 | 139 | 102 | 68 | 97 | 98 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | ENE 7 | NE 7 | ENE 7 | ENE 7 | NE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | NE 6 | NE 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 57 | 63 | 85 | 88 | 54 | 85 | 76 | 69 | 65 | 49 | 56 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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