Surf Forecasts:
How big are the waves at Grandma's today (08 Sep):
- Morning surf: Morning surf (08 Sep, local time) - 10ft (3.0m), 12s period with SW swell.
- Afternoon surf: Afternoon surf (08 Sep, local time) - 3ft (0.9m), 15s period with SSW swell.
- Evening surf: Evening surf (08 Sep, local time) - 3ft (0.9m), 14s period with SSW swell.
The current surf forecast for Grandma's at 1PM is: 1.6m 9s primary swell from a South-southwest direction and 1.2m 10s secondary swell from a West direction (forecast issued at 07:00am September 08). The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Sep) | 10ft (3.0m) | 12s |
| Afternoon (08 Sep) | 3ft (0.9m) | 15s |
| Evening (08 Sep) | 3ft (0.9m) | 14s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 13mm), heaviest on Wed night. Warm (max 29°C on Wed morning, min 24°C on Thu night). Winds decreasing (fresh winds from the S on Tue morning, calm by Tue night). | |||||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||||||||
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) | SW 13 | SW 12 | WSW 11 | SSW 9 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 16 | SW 16 | SW 17 | SW 18 | SW 18 | SW 17 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 3135 | 2043 | 656 | 398 | 371 | 297 | 293 | 289 | 285 | 277 | 269 | 207 | 187 | 181 | 135 | 133 | 133 | 131 | 132 | 148 | 154 | 150 | 138 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | glassy | glassy | cross-off | glassy | glassy | glassy | glassy | cross-off | off | off | off | cross-off | glassy | off | off | off |
High Tide | 2:20PM0.81m | 2:43AM0.46m | 3:01PM0.78m | 3:26AM0.52m | 3:38PM0.73m | ||||||||||||||||||
Low Tide | 7:10AM0.05m | 9:02PM0.08m | 8:05AM0.05m | 9:29PM0.06m | 8:56AM0.06m | 9:54PM0.05m | |||||||||||||||||
 |  | |  |  |  | | | | | | | | | | | | | |  | | | | |
 | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:32 | — | — |
mm | 3 | 1 | 1 | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 2 | 2 | 1 | — | 1 | 1 | — | — |
Temp °C | 27 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 29 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 28 | 28 | 27 | 25 | 25 |
Feels °C | 26 | 27 | 29 | 30 | 31 | 32 | 32 | 32 | 32 | 30 | 34 | 33 | 32 | 32 | 31 | 31 | 29 | 29 | 31 | 32 | 29 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | WSW 11 | SSW 9 | SW 9 | SSW 8 | SW 8 | SW 8 | SSW 8 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 |
| kJ | 505 | 491 | 656 | 398 | 316 | 230 | 192 | 145 | 85 | 277 | 269 | 207 | 187 | 181 | 135 | 133 | 133 | 131 | 93 | 95 | 92 | 86 | 82 |
Swell 2 Height (m) Direction Period (s) | N 12 | ENE 11 | SSW 15 | W 10 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | NW 8 | SSW 7 | SSW 7 | SW 16 | SW 16 | SW 17 | SW 18 | SW 18 | SW 17 |
| kJ | 12 | 12 | 381 | 279 | 371 | 297 | 293 | 289 | 285 | 64 | 50 | 43 | 31 | 29 | 18 | 19 | 16 | 129 | 132 | 148 | 154 | 150 | 138 |
Swell 3 Height (m) Direction Period (s) | ENE 11 | NNW 12 | ENE 11 | SSW 15 | W 9 | W 8 | W 8 | NNE 8 | W 7 | W 7 | W 6 | WNW 6 | NW 10 | NW 9 | SW 16 | NW 8 | NW 10 | SE 6 | SE 4 | SSW 7 | SSW 7 | SSW 7 | ESE 5 |
| kJ | 126 | 14 | 12 | 376 | 132 | 66 | 43 | 7 | 23 | 14 | 12 | 12 | 23 | 22 | 43 | 11 | 15 | 8 | 3 | 9 | 9 | 9 | 2 |
Wind waves Height (m) Direction Period (s) | SW 13 | SW 12 | SSW 9 | — | — | — | — | — | — | — | — | — | — | E 6 | SW 7 | E 5 | E 5 | E 6 | E 5 | E 7 | E 7 | E 5 | E 5 |
| kJ | 3135 | 2043 | 433 | — | — | — | — | — | — | — | — | — | — | 38 | 39 | 93 | 97 | 160 | 74 | 120 | 93 | 77 | 65 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 21 | 16 | 15 | 15 | 15 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 4 | 4 | 4 | 4 | 4 | 12 | 12 | 4 |
Best forecast wave conditions in Maui | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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