Surf Forecasts:
How big are the waves at Grandma's today (28 Aug):
- Morning surf: Morning surf (28 Aug, local time) - 2.5ft (0.7m), 14s period with S swell.
- Afternoon surf: Afternoon surf (28 Aug, local time) - 2.5ft (0.8m), 14s period with S swell.
- Evening surf: Evening surf (28 Aug, local time) - 2ft (0.6m), 14s period with S swell.
The current surf forecast for Grandma's at 8PM is: 0.6m 14s primary swell from a South direction and 0.6m 13s secondary swell from a South direction (forecast issued at 01:00pm August 28). An open ocean swell of 0.9m 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 (28 Aug) | 2.5ft (0.7m) | 14s |
| Afternoon (28 Aug) | 2.5ft (0.8m) | 14s |
| Evening (28 Aug) | 2ft (0.6m) | 14s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 24°C on Sat night). Wind will be generally light. | |||||||||||||||||||||
Fri 28 | Saturday 29 | Sunday 30 | |||||||||||||||||||
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 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 | SSW 17 | SW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SW 15 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 144 | 257 | 320 | 148 | 126 | 88 | 87 | 123 | 117 | 86 | 75 | 70 | 109 | 111 | 135 | 103 | 100 | 142 | 92 | 68 | 91 |
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 | off | off | off | off | off | off | off | off | off | off | off |
High Tide | 4:24PM0.69m | 4:53AM0.52m | 4:54PM0.63m | 5:35AM0.57m | 5:24PM0.57m | ||||||||||||||||
Low Tide | 9:42AM0.08m | 10:41PM0.06m | 10:28AM0.10m | 11:08PM0.05m | 11:18AM0.14m | ||||||||||||||||
 |  | |  | |  | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:43 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 27 | 25 | 25 | 25 | 25 | 25 | 27 | 28 | 28 | 25 | 25 | 24 | 24 | 26 | 28 | 28 | 28 | 26 | 25 |
Feels °C | 28 | 30 | 27 | 26 | 26 | 26 | 26 | 26 | 28 | 29 | 28 | 25 | 26 | 25 | 25 | 26 | 29 | 29 | 29 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 13 | S 12 | SSW 17 | SW 17 | SSW 16 | SSW 16 | SSW 16 | S 12 | S 12 | SSW 15 |
| kJ | 144 | 257 | 320 | 148 | 126 | 87 | 87 | 123 | 117 | 86 | 75 | 52 | 74 | 111 | 135 | 103 | 100 | 142 | 69 | 68 | 91 |
Swell 2 Height (m) Direction Period (s) | S 15 | S 11 | NNW 8 | S 13 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | SSW 12 | SSW 17 | S 12 | SSW 12 | SSW 12 | SSW 12 | S 12 | SSW 15 | SW 15 | S 11 |
| kJ | 109 | 20 | 14 | 126 | 102 | 88 | 55 | 55 | 55 | 84 | 55 | 47 | 109 | 45 | 48 | 47 | 48 | 44 | 92 | 58 | 63 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | NNE 5 | SW 19 | NNE 5 | N 6 | ESE 6 | NNE 6 | NNE 6 | SE 6 | SW 18 | SW 17 | SW 17 | N 6 | SSW 12 | S 12 | S 12 | S 12 | SSW 12 | NNE 7 | SE 6 | SE 6 |
| kJ | 40 | 4 | 14 | 5 | 6 | 4 | 6 | 7 | 9 | 78 | 74 | 70 | 3 | 47 | 25 | 25 | 25 | 28 | 10 | 9 | 9 |
Wind waves Height (m) Direction Period (s) | E 7 | E 5 | E 5 | E 5 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | ESE 6 | ESE 5 | E 6 | E 5 | E 5 | E 5 | E 6 | E 6 | E 6 |
| kJ | 91 | 86 | 51 | 39 | 92 | 121 | 149 | 96 | 139 | 125 | 214 | 170 | 15 | 11 | 89 | 55 | 32 | 87 | 86 | 175 | 108 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 4 | 12 | 4 | 4 | 4 | 12 | 12 | 4 | 4 | 12 | 12 | 4 | 4 | 4 | 12 | 4 | 4 | 4 | 4 | 4 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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