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 9PM is: 0.6m 15s primary swell from a South-southwest direction (forecast issued at 01:00pm September 25). An open ocean swell of 0.6m 8s is not directed at the surf break, a second open ocean swell of 0.3m 6s is not directed at the surf break. The wind direction is predicted to be offshore.
| 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 Fri afternoon, min 25°C on Fri night). Wind will be generally light. | |||||||||||||||||||||
Fri 25 | Saturday 26 | Sunday 27 | |||||||||||||||||||
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 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 | SW 16 | SSW 16 | SW 16 | SW 16 | SSW 14 | S 11 | S 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 255 | 166 | 162 | 158 | 204 | 171 | 258 | 302 | 309 | 261 | 330 | 223 | 284 | 277 | 131 | 164 | 248 | 118 | 173 | 184 | 172 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | off | off |
High Tide | 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 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — |
 | — | — | 6:19 | — | — | — | — | — | — | — | 6:17 | — | — | — | — | — | — | — | 6:16 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 29 | 27 | 26 | 25 | 25 | 25 | 26 | 28 | 28 | 27 | 25 | 25 | 25 | 25 | 26 | 28 | 29 | 28 | 27 | 26 |
Feels °C | 27 | 30 | 28 | 26 | 24 | 25 | 25 | 27 | 29 | 29 | 26 | 24 | 24 | 25 | 25 | 27 | 29 | 28 | 29 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | 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 | SW 16 | SSW 16 | SW 16 | ESE 8 | S 11 | S 11 | S 10 |
| kJ | 255 | 166 | 162 | 158 | 204 | 171 | 258 | 302 | 309 | 261 | 330 | 223 | 284 | 277 | 121 | 164 | 248 | 76 | 149 | 184 | 172 |
Swell 2 Height (m) Direction Period (s) | SE 8 | S 11 | S 10 | ESE 7 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 8 | SW 11 | SSW 15 | SSE 11 | SSE 11 | S 11 | SSW 14 | SSW 14 | SSW 13 |
| kJ | 14 | 58 | 55 | 31 | 28 | 31 | 33 | 45 | 46 | 45 | 42 | 50 | 48 | 19 | 131 | 40 | 64 | 82 | 173 | 143 | 141 |
Swell 3 Height (m) Direction Period (s) | S 11 | ESE 8 | ESE 8 | S 11 | S 11 | SSE 11 | SSE 11 | SSE 11 | NNE 7 | SW 14 | NNE 6 | NNE 7 | NNE 6 | SSE 10 | NNE 9 | NNE 7 | ESE 8 | SW 16 | SW 15 | SW 15 | SW 18 |
| kJ | 21 | 23 | 23 | 59 | 59 | 47 | 39 | 22 | 9 | 100 | 8 | 9 | 14 | 10 | 26 | 9 | 45 | 118 | 33 | 33 | 80 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 7 | NNE 6 | NE 6 | ENE 3 | ENE 3 | ENE 3 | E 8 | E 8 | ENE 2 | ENE 3 | ENE 3 | E 9 | ESE 8 | ESE 8 | E 3 | E 8 | ESE 8 | E 8 | ESE 8 |
| kJ | 321 | 539 | 422 | 6 | 12 | 2 | 1 | 1 | 962 | 939 | 1 | 2 | 2 | 93 | 82 | 80 | 5 | 1363 | 72 | 49 | 67 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 4 | 12 | 14 | 123 | 12 | 12 | 12 | 4 | 12 | 134 | 12 | 123 | 13 | 13 | 12 | 12 | 12 | 4 | 4 | 4 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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