Surf Forecasts:
How big are the waves at Grandma's today (19 Aug):
- Morning surf: Morning surf (19 Aug, local time) - 1.5ft (0.4m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (19 Aug, local time) - 1.5ft (0.4m), 16s period with SW swell.
- Evening surf: Evening surf (19 Aug, local time) - 1.5ft (0.4m), 16s period with SW swell.
The current surf forecast for Grandma's at 12PM is: 0.4m 16s primary swell from a Southwest direction and 0.4m 12s secondary swell from a South direction (forecast issued at 07:00am August 19). The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Aug) | 1.5ft (0.4m) | 16s |
| Afternoon (19 Aug) | 1.5ft (0.4m) | 16s |
| Evening (19 Aug) | 1.5ft (0.4m) | 16s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 25°C on Wed morning). Wind will be generally light. | |||||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||||||||
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) | S 12 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 17 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SSW 16 | SW 17 | SW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 44 | 67 | 66 | 68 | 64 | 65 | 66 | 103 | 109 | 150 | 152 | 152 | 148 | 135 | 132 | 181 | 227 | 232 | 193 | 193 | 175 | 169 | 203 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | off | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | on | glassy | glassy | glassy | cross-off |
High Tide | 9:55AM0.62m | 8:54PM0.32m | 10:59AM0.65m | 10:27PM0.29m | 11:57AM0.68m | ||||||||||||||||||
Low Tide | 4:45PM0.29m | 2:49AM0.09m | 6:46PM0.26m | 3:49AM0.10m | 7:40PM0.22m | ||||||||||||||||||
 |  | | | |  | | | |  | | | | | | | | | | | | | | |
 | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:51 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 27 | 27 | 27 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 27 | 27 | 26 | 26 | 25 | 26 | 27 | 27 | 28 | 27 | 27 |
Feels °C | 26 | 26 | 29 | 30 | 30 | 26 | 26 | 27 | 27 | 29 | 30 | 31 | 32 | 31 | 30 | 31 | 29 | 30 | 30 | 31 | 33 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | SSW 16 | SSW 17 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SSW 16 | SW 17 | SW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SW 16 |
| kJ | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 103 | 109 | 150 | 152 | 152 | 148 | 135 | 132 | 181 | 227 | 232 | 193 | 193 | 175 | 169 | 203 |
Swell 2 Height (m) Direction Period (s) | W 12 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | W 10 | W 10 | S 13 |
| kJ | 11 | 67 | 66 | 68 | 64 | 65 | 66 | 45 | 44 | 41 | 21 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 37 | 34 | 33 | 54 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | W 12 | W 12 | NNE 6 | NNE 5 | SW 19 | SSW 20 | N 6 | N 6 | NNE 7 | NNE 7 | S 16 | NNE 7 | S 15 | S 15 | W 10 | W 10 | W 11 | W 10 | W 10 | S 11 | NE 7 | W 10 |
| kJ | 22 | 11 | 11 | 4 | 5 | 58 | 37 | 3 | 3 | 5 | 5 | 20 | 4 | 17 | 38 | 18 | 16 | 20 | 18 | 18 | 21 | 11 | 32 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 4 | E 4 | NNE 6 | — | E 8 | — | — | — | N 7 | NNW 2 | N 7 | — | — | E 7 | E 8 | E 5 | E 5 | — | E 5 | E 5 |
| kJ | — | — | — | 7 | 12 | 7 | — | 97 | — | — | — | 8 | 1 | 8 | — | — | 49 | 64 | 15 | 27 | — | 55 | 43 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 12 | 4 | 4 | 4 | 4 | 12 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 14 | 4 | 4 | 4 | 4 |
Best forecast wave conditions in Maui | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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