Surf Forecasts:
How big are the waves at Grandma's today (22 Sep):
- Morning surf: Morning surf (22 Sep, local time) - 2ft (0.6m), 13s period with S swell.
- Afternoon surf: Afternoon surf (22 Sep, local time) - 2ft (0.6m), 12s period with S swell.
- Evening surf: Evening surf (22 Sep, local time) - 2ft (0.6m), 12s period with S swell.
The current surf forecast for Grandma's at 6PM is: 0.6m 12s primary swell from a South direction (forecast issued at 01:00pm September 22). An open ocean swell of 0.4m 12s is not directed at the surf break, a second open ocean swell of 2.2m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Sep) | 2ft (0.6m) | 13s |
| Afternoon (22 Sep) | 2ft (0.6m) | 12s |
| Evening (22 Sep) | 2ft (0.6m) | 12s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 29°C on Tue afternoon, min 25°C on Wed night). Wind will be generally light. | |||||||||||||||||||||
Tue 22 | Wednesday 23 | Thursday 24 | |||||||||||||||||||
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) | S 12 | S 12 | S 12 | S 12 | S 12 | S 13 | S 13 | SW 17 | SW 17 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 15 | SSW 17 | SSW 15 | SW 17 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 112 | 110 | 108 | 106 | 108 | 119 | 123 | 86 | 85 | 111 | 127 | 122 | 122 | 121 | 121 | 164 | 158 | 197 | 146 | 298 | 142 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | off | off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off |
High Tide | 1:33PM0.72m | 2:00AM0.46m | 2:10PM0.71m | 2:37AM0.51m | 2:44PM0.68m | ||||||||||||||||
Low Tide | 8:09PM0.12m | 7:17AM0.11m | 8:32PM0.09m | 8:05AM0.10m | 8:56PM0.07m | ||||||||||||||||
 |  | |  |  | | | | | | | | | | | | | |  |  |  | |
 | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — |
 | — | — | 6:22 | — | — | — | — | — | — | — | 6:21 | — | — | — | — | — | — | — | 6:20 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 29 | 29 | 28 | 27 | 26 | 26 | 26 | 27 | 29 | 28 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 27 | 26 | 25 | 25 |
Feels °C | 33 | 32 | 29 | 29 | 29 | 29 | 28 | 28 | 30 | 29 | 27 | 27 | 27 | 27 | 25 | 26 | 26 | 28 | 27 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | S 12 | S 12 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 15 | SSW 17 | SSW 15 | SW 17 | SSW 15 |
| kJ | 112 | 110 | 108 | 106 | 108 | 119 | 123 | 86 | 85 | 82 | 76 | 75 | 122 | 121 | 121 | 164 | 158 | 197 | 146 | 298 | 142 |
Swell 2 Height (m) Direction Period (s) | NNW 12 | NNW 12 | NNW 12 | SE 7 | SE 10 | SE 10 | NNW 11 | SW 17 | SW 17 | SSW 17 | SW 16 | SW 16 | S 12 | S 12 | S 12 | S 12 | N 10 | ESE 7 | SE 8 | S 12 | ESE 8 |
| kJ | 30 | 48 | 46 | 11 | 27 | 27 | 23 | 76 | 75 | 111 | 127 | 122 | 75 | 75 | 72 | 46 | 35 | 19 | 16 | 44 | 23 |
Swell 3 Height (m) Direction Period (s) | NNE 6 | ESE 6 | SE 10 | NNW 11 | NNW 11 | NNW 11 | SW 17 | NNW 11 | NNW 10 | NNW 10 | N 10 | NNW 10 | SE 6 | SE 9 | SE 9 | N 10 | S 12 | S 12 | S 12 | SE 8 | SW 18 |
| kJ | 3 | 3 | 26 | 42 | 40 | 23 | 77 | 22 | 21 | 35 | 33 | 33 | 10 | 22 | 13 | 30 | 45 | 44 | 44 | 17 | 80 |
Wind waves Height (m) Direction Period (s) | E 5 | E 9 | E 6 | NNE 6 | E 10 | E 10 | NNE 6 | E 6 | E 6 | E 6 | E 9 | E 9 | E 6 | E 9 | NNE 5 | E 9 | E 6 | E 7 | E 8 | E 8 | E 7 |
| kJ | 47 | 525 | 332 | 7 | 618 | 847 | 3 | 62 | 92 | 64 | 625 | 486 | 148 | 459 | 5 | 348 | 272 | 331 | 318 | 465 | 510 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 12 | 12 | 12 | 4 | 4 | 4 | 12 | 12 | 4 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 4 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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