Surf Forecasts:
How big are the waves at Grandma's today (12 Aug):
- Morning surf: Morning surf (12 Aug, local time) - 2.5ft (0.7m), 18s period with S swell.
- Afternoon surf: Afternoon surf (12 Aug, local time) - 2.5ft (0.8m), 18s period with S swell.
- Evening surf: Evening surf (12 Aug, local time) - 2.5ft (0.8m), 17s period with S swell.
The current surf forecast for Grandma's at 6AM is: 0.6m 19s primary swell from a South direction and 0.8m 13s secondary swell from a South-southwest direction (forecast issued at 01:00am August 12). An open ocean swell of 1.2m 5s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Aug) | 2.5ft (0.7m) | 18s |
| Afternoon (12 Aug) | 2.5ft (0.8m) | 18s |
| Evening (12 Aug) | 2.5ft (0.8m) | 17s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Fri night. Warm (max 29°C on Thu afternoon, min 24°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||||||||||
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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SSW 14 | S 19 | S 18 | S 18 | S 18 | S 18 | S 17 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 243 | 188 | 235 | 404 | 399 | 395 | 364 | 339 | 422 | 417 | 412 | 401 | 376 | 544 | 447 | 447 | 441 | 422 | 429 | 333 | 333 | 333 | 329 | 253 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | cross-off | off | off | off | off | cross-off | off | cross-off | cross-off | off | off | off | off | off | off | off | off | off |
High Tide | 3:42AM0.39m | 4:09PM0.84m | 4:28AM0.43m | 4:47PM0.78m | 5:15AM0.47m | 5:22PM0.70m | ||||||||||||||||||
Low Tide | 8:57AM-0.01m | 10:49PM0.05m | 9:47AM0.02m | 11:17PM0.05m | 10:36AM0.07m | |||||||||||||||||||
 | |  | | | | | | | | | | | | | | | | | | | | |  | |
 | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:55 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 26 | 28 | 28 | 28 | 26 | 25 | 25 | 25 | 26 | 28 | 29 | 28 | 26 | 25 | 25 | 24 | 26 | 28 | 28 | 27 | 25 | 25 |
Feels °C | 26 | 26 | 27 | 30 | 29 | 28 | 26 | 26 | 26 | 26 | 27 | 29 | 29 | 27 | 26 | 25 | 25 | 24 | 25 | 28 | 27 | 26 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 13 | SSW 13 | S 18 | S 18 | S 17 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 |
| kJ | 243 | 181 | 225 | 222 | 399 | 395 | 364 | 339 | 422 | 417 | 412 | 401 | 376 | 544 | 447 | 447 | 441 | 422 | 429 | 333 | 333 | 333 | 329 | 253 |
Swell 2 Height (m) Direction Period (s) | S 19 | S 19 | S 18 | S 18 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | S 13 | S 13 | S 12 | S 12 | S 12 | NNW 12 | NW 12 | NW 12 | SE 7 | NNE 7 | NNE 6 | NNE 5 | NNE 5 | ESE 11 | ESE 11 | ESE 10 |
| kJ | 192 | 188 | 235 | 404 | 170 | 218 | 173 | 173 | 212 | 161 | 101 | 101 | 106 | 27 | 22 | 22 | 12 | 9 | 6 | 6 | 5 | 11 | 11 | 11 |
Swell 3 Height (m) Direction Period (s) | W 13 | ESE 5 | WNW 10 | NW 13 | NW 13 | NW 12 | NW 12 | E 6 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | SW 19 | SW 19 | SW 18 | W 12 | ESE 10 | ESE 5 | ESE 5 | ESE 10 | W 12 | SSW 17 | NNE 6 |
| kJ | 30 | 3 | 11 | 27 | 43 | 39 | 23 | 12 | 36 | 22 | 22 | 22 | 22 | 14 | 14 | 13 | 11 | 9 | 3 | 3 | 10 | 11 | 30 | 4 |
Wind waves Height (m) Direction Period (s) | E 5 | E 5 | E 8 | E 8 | E 5 | E 5 | ENE 6 | E 6 | E 6 | E 7 | E 7 | E 7 | NE 7 | E 6 | ENE 6 | ENE 5 | NNE 5 | E 6 | E 6 | E 6 | E 9 | NNE 6 | NNE 6 | NE 3 |
| kJ | 62 | 77 | 117 | 141 | 71 | 120 | 14 | 175 | 112 | 150 | 155 | 181 | 7 | 126 | 10 | 9 | 6 | 130 | 74 | 75 | 481 | 11 | 13 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 4 | 12 | 12 | 4 | 4 | 12 | 4 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 4 | 12 | 13 | 14 | 14 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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