Surf Forecasts:
How big are the waves at Grandma's today (29 Sep):
- Morning surf: Morning surf (29 Sep, local time) - 2.5ft (0.7m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (29 Sep, local time) - 2.5ft (0.7m), 16s period with SW swell.
- Evening surf: Evening surf (29 Sep, local time) - 2.5ft (0.7m), 16s period with SW swell.
The current surf forecast for Grandma's at 2AM is: 0.6m 17s primary swell from a South-southwest direction and 0.7m 10s secondary swell from a Southwest direction (forecast issued at 07:00pm September 28). An open ocean swell of 1.6m 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 (29 Sep) | 2.5ft (0.7m) | 16s |
| Afternoon (29 Sep) | 2.5ft (0.7m) | 16s |
| Evening (29 Sep) | 2.5ft (0.7m) | 16s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 28°C on Mon night, min 25°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Mon 28 | Tuesday 29 | Wednesday 30 | |||||||||||||||||
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 17 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SW 15 | W 11 | W 11 | SW 14 | W 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 202 | 202 | 200 | 200 | 195 | 271 | 264 | 261 | 261 | 261 | 223 | 166 | 212 | 152 | 106 | 108 | 108 | 103 | 79 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-off | glassy | off | glassy | on | cross | cross | cross | cross-off | off | cross-off | cross | cross-on | cross-on | cross-on | cross | cross |
High Tide | 4:56PM0.45m | 5:58AM0.74m | 5:35PM0.39m | 6:52AM0.75m | 6:25PM0.33m | ||||||||||||||
Low Tide | 10:48PM0.02m | 12:26PM0.18m | 11:25PM0.03m | 1:38PM0.20m | |||||||||||||||
 |  | | | | | | |  | | | | | | |  | |  | | |
 | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — |
 | 6:16 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — |
Temp °C | 29 | 28 | 26 | 26 | 25 | 26 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 30 | 31 | 29 | 29 | 28 | 29 | 30 | 30 | 28 | 30 | 31 | 29 | 29 | 28 | 28 | 30 | 30 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | S 9 | SSW 10 | SW 10 | SSW 9 | SSW 9 | SW 16 | SW 11 | SW 10 | SW 10 | SSW 16 | SSW 16 | SSW 16 | W 10 | W 10 | W 11 | W 11 | W 10 | W 10 |
| kJ | 135 | 103 | 72 | 98 | 78 | 71 | 264 | 134 | 102 | 132 | 223 | 166 | 212 | 74 | 98 | 108 | 108 | 100 | 71 |
Swell 2 Height (m) Direction Period (s) | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SW 16 | SSW 9 | SW 16 | SW 16 | SW 16 | WSW 10 | WSW 10 | W 10 | SSW 15 | SW 15 | SW 15 | S 6 | S 6 | SSW 14 |
| kJ | 202 | 202 | 200 | 200 | 195 | 271 | 43 | 261 | 261 | 261 | 65 | 55 | 80 | 152 | 106 | 104 | 24 | 32 | 79 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | S 6 | SSW 11 | SSW 15 | SW 14 | SW 14 | SSW 16 |
| kJ | 51 | 54 | 50 | 57 | 47 | 27 | 35 | 46 | 25 | 23 | 24 | 24 | 22 | 24 | 23 | 42 | 103 | 103 | 48 |
Wind waves Height (m) Direction Period (s) | E 8 | E 6 | E 8 | E 6 | E 8 | E 8 | E 8 | E 13 | E 8 | E 8 | SSE 6 | SSE 5 | S 5 | E 14 | S 6 | S 6 | S 6 | — | S 6 |
| kJ | 401 | 211 | 297 | 181 | 260 | 195 | 163 | 511 | 196 | 113 | 12 | 15 | 14 | 395 | 25 | 24 | 52 | — | 30 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 14 | 4 | 13 | 12 | 4 | 4 | 14 | 14 | 22 | 15 | 12 | 12 | 13 | 15 | 15 | 17 | 15 | 15 | 15 |
Best forecast wave conditions in Maui | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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