Surf Forecasts:
How big are the waves at Grandma's today (06 Sep):
- Morning surf: Morning surf (06 Sep, local time) - 3.5ft (1.0m), 11s period with SSW swell.
- Afternoon surf: Afternoon surf (06 Sep, local time) - 4.5ft (1.3m), 12s period with SSW swell.
- Evening surf: Evening surf (06 Sep, local time) - 3.5ft (1.1m), 12s period with SW swell.
The current surf forecast for Grandma's at 7AM is: 1.0m 11s primary swell from a South-southwest direction and 0.6m 16s secondary swell from a South-southwest direction (forecast issued at 01:00am September 06). An open ocean swell of 0.9m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Sep) | 3.5ft (1.0m) | 11s |
| Afternoon (06 Sep) | 4.5ft (1.3m) | 12s |
| Evening (06 Sep) | 3.5ft (1.1m) | 12s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Sun night. Warm (max 29°C on Mon afternoon, min 26°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||||||||||
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 11 | SSW 12 | SSW 11 | SW 16 | SSW 12 | SW 12 | SW 12 | SW 15 | SW 14 | SW 13 | SW 12 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 12 | SW 11 | SW 11 | W 11 | SSW 14 | SSW 14 | SSW 14 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 366 | 301 | 234 | 255 | 496 | 428 | 421 | 262 | 776 | 600 | 528 | 736 | 725 | 885 | 1387 | 1735 | 1834 | 1381 | 913 | 804 | 388 | 301 | 297 | 293 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | glassy | cross-on | glassy | cross | off | cross-off | off | off | glassy | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 00:06AM0.30m | 12:47PM0.81m | 1:07AM0.35m | 1:36PM0.82m | 1:58AM0.40m | 2:20PM0.81m | ||||||||||||||||||
Low Tide | 5:02AM0.07m | 8:00PM0.12m | 6:10AM0.06m | 8:32PM0.09m | 7:10AM0.05m | 9:02PM0.08m | ||||||||||||||||||
 |  |  |  |  | |  | | | | | | | | | | | | |  | | | | | |
 | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:36 | — | — | — | — | — | — | — | 6:35 | — | — |
mm | — | — | — | — | 1 | 1 | 2 | 3 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 26 | 28 | 28 | 28 | 27 | 26 | 26 | 26 | 26 | 28 | 29 | 29 | 28 | 27 | 27 | 26 | 27 | 28 | 28 | 27 | 27 | 26 |
Feels °C | 28 | 28 | 29 | 32 | 32 | 32 | 30 | 29 | 30 | 29 | 29 | 32 | 32 | 30 | 31 | 29 | 29 | 28 | 29 | 29 | 30 | 30 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 12 | SSW 11 | SSW 11 | SSW 12 | SW 12 | SW 12 | SSW 12 | SW 14 | SW 13 | SW 12 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 12 | SW 11 | SW 11 | W 11 | SSW 9 | SSW 8 | SSW 8 |
| kJ | 366 | 301 | 234 | 197 | 496 | 428 | 421 | 239 | 776 | 600 | 528 | 736 | 725 | 885 | 1387 | 1735 | 1834 | 1381 | 913 | 804 | 388 | 233 | 169 | 165 |
Swell 2 Height (m) Direction Period (s) | S 12 | SSW 16 | SSW 16 | SW 16 | SSE 12 | SSW 19 | SSW 18 | SW 15 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | S 8 | S 8 | S 8 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | W 11 | W 10 | SSW 14 |
| kJ | 45 | 169 | 169 | 255 | 46 | 201 | 263 | 262 | 348 | 286 | 394 | 394 | 475 | 138 | 185 | 137 | 402 | 422 | 392 | 381 | 376 | 272 | 196 | 293 |
Swell 3 Height (m) Direction Period (s) | NNE 6 | S 12 | S 12 | S 12 | NNE 6 | SE 6 | SE 6 | SSW 18 | SSE 7 | S 7 | S 7 | S 7 | S 8 | SSW 16 | SSW 15 | SSW 15 | N 13 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | SSW 14 | SSW 14 | W 10 |
| kJ | 12 | 45 | 44 | 46 | 4 | 8 | 10 | 260 | 10 | 26 | 25 | 39 | 60 | 457 | 413 | 402 | 13 | 14 | 14 | 14 | 14 | 301 | 297 | 120 |
Wind waves Height (m) Direction Period (s) | E 5 | E 5 | E 5 | E 6 | E 6 | E 12 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | ESE 6 | SSE 8 | — | — | — | — | — | — | SSW 9 | — | — | — |
| kJ | 36 | 44 | 40 | 89 | 86 | 1019 | 193 | 199 | 143 | 139 | 302 | 302 | 329 | 436 | — | — | — | — | — | — | 249 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 14 | 4 | 14 | 4 | 4 | 4 | 4 | 4 | 86 | 22 | 19 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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