Surf Forecasts:
How big are the waves at Grandma's today (25 Sep):
- Morning surf: Morning surf (25 Sep, local time) - 2.5ft (0.7m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (25 Sep, local time) - 2ft (0.6m), 16s period with SSW swell.
- Evening surf: Evening surf (25 Sep, local time) - 2ft (0.6m), 15s period with SSW swell.
The current surf forecast for Grandma's at 5AM is: 0.7m 16s primary swell from a Southwest direction (forecast issued at 01:00am September 25). An open ocean swell of 0.4m 7s is not directed at the surf break, a second open ocean swell of 1.7m 7s 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 (25 Sep) | 2.5ft (0.7m) | 16s |
| Afternoon (25 Sep) | 2ft (0.6m) | 16s |
| Evening (25 Sep) | 2ft (0.6m) | 15s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 29°C on Sun afternoon, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 25 | Saturday 26 | Sunday 27 | ||||||||||||||||||||||
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) | SW 17 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 17 | SW 17 | SW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 16 | SSW 14 | S 12 | S 11 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 298 | 268 | 258 | 255 | 166 | 162 | 158 | 204 | 171 | 258 | 302 | 309 | 261 | 330 | 223 | 284 | 277 | 310 | 164 | 248 | 118 | 163 | 130 | 112 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | off | off | off |
High Tide | 3:13AM0.57m | 3:17PM0.64m | 3:50AM0.63m | 3:49PM0.58m | 4:29AM0.68m | 4:21PM0.52m | ||||||||||||||||||
Low Tide | 8:53AM0.10m | 9:20PM0.05m | 9:40AM0.11m | 9:47PM0.03m | 10:31AM0.13m | 10:15PM0.02m | ||||||||||||||||||
 | |  | | |  |  | | | | | | | | | |  | |  | | | | | | |
 | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:17 | — | — | — | — | — | — | — | 6:16 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 28 | 28 | 27 | 26 | 25 | 25 | 25 | 25 | 27 | 28 | 27 | 25 | 25 | 25 | 25 | 26 | 28 | 29 | 29 | 27 | 26 |
Feels °C | 27 | 28 | 26 | 29 | 29 | 27 | 26 | 24 | 25 | 25 | 25 | 28 | 29 | 26 | 24 | 25 | 25 | 25 | 26 | 29 | 28 | 29 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 17 | SW 17 | SW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | ESE 8 | SSW 14 | S 12 | S 11 |
| kJ | 298 | 268 | 258 | 255 | 166 | 162 | 158 | 204 | 171 | 258 | 302 | 309 | 261 | 330 | 223 | 284 | 277 | 310 | 164 | 248 | 56 | 163 | 130 | 112 |
Swell 2 Height (m) Direction Period (s) | ESE 8 | SE 7 | SE 7 | SE 7 | S 11 | S 10 | S 11 | SSE 10 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SSE 10 | NNE 6 | ESE 8 | ESE 8 | NNE 7 | NNE 7 | SSE 10 | SW 16 | SE 8 | SW 14 | ESE 8 |
| kJ | 22 | 14 | 13 | 14 | 58 | 54 | 57 | 35 | 23 | 26 | 42 | 42 | 39 | 10 | 7 | 43 | 44 | 17 | 10 | 32 | 118 | 32 | 96 | 56 |
Swell 3 Height (m) Direction Period (s) | S 11 | S 11 | S 11 | S 11 | SE 7 | SE 7 | SE 7 | ESE 7 | SSE 10 | SSE 10 | SSE 10 | NNE 6 | SW 15 | WNW 16 | SW 11 | N 7 | NNE 9 | SSE 10 | SSE 10 | NNE 7 | SSW 14 | S 10 | SSW 14 | SSW 14 |
| kJ | 23 | 21 | 37 | 21 | 14 | 14 | 13 | 21 | 35 | 34 | 34 | 8 | 54 | 25 | 19 | 8 | 26 | 20 | 19 | 10 | 118 | 50 | 68 | 63 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | NE 6 | NE 3 | NE 3 | ENE 3 | E 8 | ENE 3 | E 8 | ESE 8 | E 3 | ENE 3 | ESE 8 | ESE 8 | ESE 8 | E 8 | ENE 2 | ESE 8 | E 8 |
| kJ | 348 | 271 | 348 | 348 | 324 | 298 | 303 | 9 | 2 | 3 | 1 | 871 | 1 | 55 | 68 | 5 | 3 | 78 | 76 | 58 | 1188 | 1 | 72 | 1083 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 12 | 12 | 12 | 4 | 12 | 12 | 14 | 14 | 14 | 12 | 4 | 12 | 134 | 12 | 12 | 13 | 13 | 13 | 12 | 12 | 4 | 13 | 12 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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