Surf Forecasts:
How big are the waves at Grandma's today (10 Sep):
- Morning surf: Morning surf (10 Sep, local time) - 1.5ft (0.5m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (10 Sep, local time) - 1.5ft (0.5m), 18s period with SW swell.
- Evening surf: Evening surf (10 Sep, local time) - 1.5ft (0.5m), 17s period with SW swell.
The current surf forecast for Grandma's at 9AM is: 0.6m 13s primary swell from a South-southwest direction and 0.5m 16s secondary swell from a Southwest direction (forecast issued at 01:00am September 10). An open ocean swell of 1.4m 6s is not directed at the surf break. The wind direction is predicted to be glassy and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Sep) | 1.5ft (0.5m) | 16s |
| Afternoon (10 Sep) | 1.5ft (0.5m) | 18s |
| Evening (10 Sep) | 1.5ft (0.5m) | 17s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Thu morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||||||||||
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 | 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) | SSW 13 | SSW 13 | SW 16 | SW 16 | SW 17 | SW 18 | SW 18 | SW 17 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SW 16 | SW 16 | SW 16 | SW 16 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 133 | 133 | 131 | 132 | 148 | 154 | 150 | 138 | 129 | 173 | 173 | 171 | 156 | 150 | 150 | 148 | 148 | 148 | 148 | 158 | 75 | 73 | 64 | 64 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | glassy | glassy | off | off | off | off | off | off | cross-off | glassy | off | cross-off | off | cross-off | off | off | glassy | glassy | off | off | off |
High Tide | 3:26AM0.52m | 3:38PM0.73m | 4:08AM0.57m | 4:14PM0.66m | 4:49AM0.61m | 4:47PM0.58m | ||||||||||||||||||
Low Tide | 8:56AM0.06m | 9:54PM0.05m | 9:46AM0.09m | 10:20PM0.05m | 10:34AM0.12m | 10:45PM0.05m | ||||||||||||||||||
 | |  | | |  |  | | | | | | | | | | | | | | | | | | |
 | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:32 | — | — | — | — | — | — | — | 6:32 | — | — | — | — | — | — | — | 6:31 | — | — |
mm | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 28 | 28 | 28 | 26 | 25 | 24 | 24 | 25 | 27 | 27 | 27 | 25 | 25 | 24 | 24 | 25 | 27 | 27 | 26 | 25 | 25 |
Feels °C | 30 | 30 | 30 | 32 | 32 | 31 | 28 | 26 | 25 | 25 | 26 | 29 | 30 | 29 | 26 | 27 | 25 | 25 | 26 | 29 | 30 | 27 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | NNE 4 | SW 13 |
| kJ | 133 | 133 | 131 | 131 | 95 | 92 | 86 | 82 | 129 | 173 | 173 | 171 | 156 | 150 | 150 | 148 | 148 | 148 | 148 | 158 | 75 | 73 | 6 | 45 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | SE 6 | SW 16 | SW 16 | SW 17 | SW 18 | SW 18 | SW 17 | SSW 12 | SSW 12 | SSW 9 | SW 9 | S 12 | SSW 12 | SSW 11 | S 12 | S 11 | S 11 | S 11 | SSW 11 | SW 16 | SW 16 | SW 13 | SW 16 |
| kJ | 16 | 8 | 129 | 132 | 148 | 154 | 150 | 138 | 46 | 45 | 32 | 21 | 42 | 44 | 43 | 24 | 23 | 21 | 20 | 23 | 66 | 66 | 45 | 64 |
Swell 3 Height (m) Direction Period (s) | NW 9 | SSW 7 | SE 6 | SW 7 | SSW 7 | SSW 7 | SSW 7 | ESE 5 | SSW 10 | SSW 10 | SSW 12 | SSW 12 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 8 | SW 9 | WSW 8 | SSW 11 | SSW 11 | SW 16 | NNE 4 |
| kJ | 29 | 9 | 11 | 12 | 9 | 9 | 9 | 2 | 37 | 37 | 47 | 46 | 12 | 12 | 20 | 20 | 12 | 11 | 12 | 7 | 11 | 11 | 64 | 4 |
Wind waves Height (m) Direction Period (s) | E 5 | E 6 | E 6 | E 6 | NNW 8 | NNE 3 | E 5 | E 5 | E 5 | E 5 | E 5 | E 4 | — | — | E 4 | E 10 | E 4 | E 4 | E 4 | — | NNE 8 | NNE 3 | E 3 | ESE 4 |
| kJ | 104 | 207 | 164 | 60 | 11 | 1 | 73 | 65 | 50 | 60 | 51 | 18 | — | — | 16 | 218 | 17 | 11 | 7 | — | 14 | 3 | 8 | 17 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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