Surf Forecasts:
How big are the waves at Grandma's today (05 Sep):
- Morning surf: Morning surf (05 Sep, local time) - 5ft (1.5m), 12s period with SSW swell.
- Afternoon surf: Afternoon surf (05 Sep, local time) - 4.5ft (1.4m), 12s period with SSW swell.
- Evening surf: Evening surf (05 Sep, local time) - 4.5ft (1.3m), 12s period with SSW swell.
The current surf forecast for Grandma's at 12AM is: 1.1m 11s primary swell from a South direction and 0.6m 13s secondary swell from a South-southwest direction (forecast issued at 07:00pm September 04). An open ocean swell of 1.1m 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 (05 Sep) | 5ft (1.5m) | 12s |
| Afternoon (05 Sep) | 4.5ft (1.4m) | 12s |
| Evening (05 Sep) | 4.5ft (1.3m) | 12s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Sun afternoon. Warm (max 29°C on Mon morning, min 25°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Fri 4 | Saturday 5 | Sunday 6 | |||||||||||||||||
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) | S 13 | S 12 | S 11 | S 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 | SW 13 | SW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 623 | 472 | 229 | 497 | 519 | 579 | 514 | 514 | 444 | 444 | 444 | 461 | 491 | 491 | 436 | 464 | 386 | 543 | 486 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | off | off | cross-off | off | off | off | off | cross-off | cross-off | off | glassy | glassy | glassy | off | off |
High Tide | 10:46PM0.28m | 11:50AM0.78m | 00:06AM0.30m | 12:47PM0.81m | |||||||||||||||
Low Tide | 6:25PM0.20m | 3:49AM0.08m | 7:20PM0.16m | 5:02AM0.07m | 8:00PM0.12m | ||||||||||||||
 |  | | | |  | | | | | |  | | | |  | |  |  | |
 | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | 6:38 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — |
Temp °C | 28 | 26 | 25 | 25 | 25 | 26 | 28 | 27 | 27 | 26 | 26 | 25 | 25 | 26 | 28 | 28 | 27 | 27 | 27 |
Feels °C | 28 | 26 | 26 | 27 | 27 | 27 | 31 | 30 | 29 | 28 | 29 | 28 | 27 | 29 | 32 | 32 | 31 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 12 | S 11 | S 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 | SW 13 | SW 12 |
| kJ | 623 | 472 | 229 | 497 | 519 | 579 | 514 | 514 | 444 | 444 | 444 | 461 | 491 | 491 | 436 | 464 | 386 | 543 | 486 |
Swell 2 Height (m) Direction Period (s) | E 14 | N 6 | SSW 13 | N 6 | N 6 | NNE 6 | NNE 6 | SSW 17 | SW 17 | SW 17 | SW 15 | S 12 | S 12 | S 12 | S 12 | SSE 12 | SSW 19 | SSW 18 | SSW 18 |
| kJ | 16 | 5 | 131 | 7 | 7 | 8 | 8 | 117 | 74 | 75 | 116 | 46 | 45 | 25 | 25 | 46 | 201 | 257 | 260 |
Swell 3 Height (m) Direction Period (s) | SW 13 | SW 20 | N 6 | SW 20 | SW 20 | N 11 | N 10 | NNE 6 | NNE 6 | NNE 6 | N 6 | N 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | S 12 | S 12 | S 11 |
| kJ | 7 | 15 | 6 | 15 | 15 | 2 | 2 | 8 | 7 | 7 | 7 | 7 | 8 | 7 | 7 | 7 | 44 | 24 | 22 |
Wind waves Height (m) Direction Period (s) | N 6 | E 14 | E 5 | E 5 | E 5 | E 5 | E 13 | E 13 | E 14 | E 13 | E 13 | E 5 | E 4 | E 5 | E 5 | E 5 | E 12 | E 6 | E 6 |
| kJ | 5 | 1147 | 60 | 42 | 38 | 20 | 878 | 1021 | 1332 | 1247 | 1228 | 57 | 33 | 28 | 40 | 60 | 1031 | 75 | 92 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 12 | 12 | 4 | 4 | 4 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
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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