Surf Forecasts:
How big are the waves at Grandma's today (27 Aug):
- Morning surf: Morning surf (27 Aug, local time) - 3.5ft (1.0m), 17s period with S swell.
- Afternoon surf: Afternoon surf (27 Aug, local time) - 3ft (0.9m), 17s period with S swell.
- Evening surf: Evening surf (27 Aug, local time) - 2.5ft (0.7m), 15s period with S swell.
The current surf forecast for Grandma's at 6PM is: 0.8m 16s primary swell from a South direction (forecast issued at 01:00pm August 27). An open ocean swell of 0.4m 6s is not directed at the surf break, a second open ocean swell of 1.6m 6s 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 (27 Aug) | 3.5ft (1.0m) | 17s |
| Afternoon (27 Aug) | 3ft (0.9m) | 17s |
| Evening (27 Aug) | 2.5ft (0.7m) | 15s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Thu afternoon, min 24°C on Thu night). Wind will be generally light. | |||||||||||||||||||||
Thu 27 | Friday 28 | Saturday 29 | |||||||||||||||||||
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 17 | S 17 | S 16 | S 15 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | SW 18 | SW 17 | SW 17 | SSW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 481 | 465 | 322 | 161 | 482 | 482 | 362 | 272 | 260 | 257 | 324 | 148 | 126 | 88 | 125 | 87 | 117 | 86 | 84 | 70 | 108 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | cross-off | off | cross-off | off | off | cross-off | off | off | off | off | off | off | off |
High Tide | 3:54PM0.74m | 4:15AM0.48m | 4:24PM0.69m | 4:53AM0.52m | 4:54PM0.63m | ||||||||||||||||
Low Tide | 8:58AM0.06m | 10:17PM0.08m | 9:42AM0.08m | 10:41PM0.06m | 10:28AM0.10m | ||||||||||||||||
 |  | |  | | | | | | | |  | | | | | | | | | | |
 | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 28 | 25 | 25 | 24 | 24 | 25 | 27 | 28 | 27 | 25 | 25 | 24 | 24 | 25 | 28 | 28 | 28 | 25 | 25 |
Feels °C | 29 | 29 | 28 | 24 | 25 | 24 | 25 | 25 | 28 | 29 | 27 | 25 | 26 | 25 | 25 | 25 | 29 | 30 | 28 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | S 17 | S 17 | S 16 | S 15 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | SSW 17 |
| kJ | 481 | 465 | 322 | 161 | 482 | 482 | 362 | 272 | 260 | 257 | 324 | 148 | 126 | 88 | 125 | 87 | 117 | 86 | 84 | 52 | 108 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | SE 6 | S 16 | N 9 | NNW 21 | S 11 | S 11 | NNE 6 | S 11 | NNE 6 | S 13 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | SSW 12 | SSW 12 | S 12 |
| kJ | 73 | 73 | 9 | 127 | 6 | 44 | 37 | 36 | 4 | 20 | 6 | 126 | 102 | 87 | 55 | 55 | 55 | 84 | 50 | 48 | 47 |
Swell 3 Height (m) Direction Period (s) | N 10 | N 10 | SSW 12 | SSW 12 | W 9 | SW 21 | NNE 7 | NNE 6 | SSW 11 | NNE 5 | SW 19 | NNE 5 | N 5 | SE 6 | SE 6 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SSW 12 |
| kJ | 17 | 16 | 28 | 46 | 2 | 18 | 4 | 4 | 12 | 5 | 14 | 5 | 5 | 10 | 9 | 50 | 80 | 78 | 74 | 70 | 48 |
Wind waves Height (m) Direction Period (s) | E 5 | E 6 | E 6 | E 6 | E 6 | E 5 | E 5 | E 7 | E 5 | E 7 | E 5 | E 5 | E 6 | E 6 | E 6 | E 5 | E 6 | E 6 | E 6 | E 6 | E 6 |
| kJ | 80 | 133 | 184 | 134 | 86 | 67 | 54 | 113 | 52 | 93 | 45 | 74 | 89 | 156 | 92 | 58 | 72 | 98 | 98 | 127 | 78 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 4 | 13 | 12 | 12 | 12 | 4 | 12 | 4 | 4 | 12 | 12 | 12 | 4 | 4 | 12 | 4 | 4 | 12 | 12 | 12 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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