Surf Forecasts:
How big are the waves at Grandma's today (30 Sep):
- Morning surf: Morning surf (30 Sep, local time) - 2ft (0.6m), 15s period with SSW swell.
- Afternoon surf: Afternoon surf (30 Sep, local time) - 1.5ft (0.5m), 15s period with SW swell.
- Evening surf: Evening surf (30 Sep, local time) - 2ft (0.6m), 10s period with W swell.
The current surf forecast for Grandma's at 1AM is: 0.6m 16s primary swell from a South-southwest direction and 0.5m 9s secondary swell from a West-southwest direction (forecast issued at 07:00pm September 29). An open ocean swell of 1.0m 8s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Sep) | 2ft (0.6m) | 15s |
| Afternoon (30 Sep) | 1.5ft (0.5m) | 15s |
| Evening (30 Sep) | 2ft (0.6m) | 10s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Wed afternoon. Warm (max 27°C on Tue night, min 25°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Tue 29 | Wednesday 30 | Thursday 1 | |||||||||||||||||
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) | SW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SW 15 | SW 15 | SW 14 | W 10 | W 10 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | S 14 | SSW 15 | S 15 |
Wave Graph  | |||||||||||||||||||
 kJ | 261 | 261 | 223 | 166 | 212 | 154 | 106 | 104 | 103 | 82 | 79 | 53 | 60 | 51 | 50 | 43 | 96 | 73 | 38 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | glassy | glassy | cross | cross | cross-on | cross | cross | cross | cross | glassy | off | glassy | cross | glassy | glassy | glassy | glassy |
High Tide | 5:35PM0.39m | 6:52AM0.75m | 6:25PM0.33m | 7:55AM0.76m | 7:43PM0.28m | ||||||||||||||
Low Tide | 11:25PM0.03m | 1:38PM0.20m | 00:10AM0.05m | 3:07PM0.20m | |||||||||||||||
 |  |  | | | |  |  | | | | | | | | | | | | |
 | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — |
 | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:14 | — | — |
mm | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 31 | 30 | 31 | 30 | 29 | 28 | 30 | 30 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 31 | 31 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 10 | SW 10 | SW 10 | SSW 16 | SSW 16 | WSW 11 | W 10 | W 10 | W 10 | S 6 | S 5 | S 5 | W 9 | S 5 | S 5 | SW 13 | S 14 | S 5 | SSW 5 |
| kJ | 98 | 89 | 77 | 166 | 212 | 154 | 106 | 69 | 96 | 32 | 21 | 13 | 40 | 12 | 18 | 43 | 96 | 10 | 8 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SSW 16 | WSW 9 | SW 9 | SSW 15 | SW 15 | SW 15 | SW 14 | W 10 | W 10 | W 9 | SW 14 | W 9 | W 8 | W 8 | W 8 | W 9 | W 8 |
| kJ | 261 | 261 | 223 | 49 | 68 | 152 | 106 | 104 | 103 | 78 | 70 | 41 | 50 | 24 | 23 | 22 | 23 | 23 | 23 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SE 5 | SSE 5 | W 12 | SSW 11 | SSW 11 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SW 14 | SSW 13 | SW 14 | SW 14 | SSW 13 | SW 14 | SSW 15 | S 15 |
| kJ | 25 | 23 | 9 | 9 | 47 | 23 | 22 | 42 | 42 | 82 | 79 | 53 | 60 | 51 | 50 | 35 | 29 | 73 | 38 |
Wind waves Height (m) Direction Period (s) | E 14 | SSE 3 | E 12 | E 8 | SSE 5 | S 5 | S 6 | S 6 | S 6 | — | SE 5 | S 5 | S 5 | ESE 5 | ESE 5 | S 5 | S 5 | E 5 | — |
| kJ | 522 | 4 | 444 | 142 | 9 | 19 | 24 | 34 | 33 | — | 72 | 12 | 18 | 63 | 103 | 21 | 16 | 12 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 13 | 15 | 17 | 14 | 20 | 20 | 13 | 12 | 12 | 4 | 14 | 4 | 4 | 4 | 12 |
Best forecast wave conditions in Maui | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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