Surf Forecasts:
How big are the waves at Grandma's today (11 Aug):
- Morning surf: Morning surf (11 Aug, local time) - 2ft (0.6m), 15s period with SSW swell.
- Afternoon surf: Afternoon surf (11 Aug, local time) - 2.5ft (0.7m), 14s period with SSW swell.
- Evening surf: Evening surf (11 Aug, local time) - 2.5ft (0.7m), 14s period with SSW swell.
The current surf forecast for Grandma's at 6AM is: 0.5m 15s primary swell from a South-southwest direction and 0.3m 11s secondary swell from a South-southwest direction (forecast issued at 01:00am August 11). An open ocean swell of 1.2m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Aug) | 2ft (0.6m) | 15s |
| Afternoon (11 Aug) | 2.5ft (0.7m) | 14s |
| Evening (11 Aug) | 2.5ft (0.7m) | 14s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 29°C on Tue afternoon, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||||||||||
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 15 | S 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | S 20 | SSW 14 | S 19 | S 18 | S 18 | S 18 | S 18 | S 17 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 186 | 116 | 121 | 218 | 213 | 210 | 201 | 195 | 192 | 188 | 235 | 404 | 399 | 395 | 364 | 427 | 422 | 417 | 412 | 401 | 376 | 544 | 537 | 447 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | glassy | cross-off | off | off | off | off | cross-off | off | cross-off | off | off | off | off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 2:54AM0.34m | 3:29PM0.87m | 3:42AM0.39m | 4:09PM0.84m | 4:28AM0.43m | 4:47PM0.78m | ||||||||||||||||||
Low Tide | 8:06AM-0.02m | 10:18PM0.06m | 8:57AM-0.01m | 10:49PM0.05m | 9:47AM0.02m | |||||||||||||||||||
 | |  |  | | | |  | | | | | | | | | | | | | | | | | |
 | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 28 | 29 | 28 | 26 | 25 | 25 | 25 | 26 | 28 | 28 | 28 | 26 | 25 | 25 | 25 | 26 | 28 | 28 | 28 | 26 | 25 |
Feels °C | 28 | 29 | 28 | 31 | 31 | 31 | 27 | 26 | 26 | 26 | 27 | 29 | 29 | 28 | 26 | 26 | 27 | 26 | 26 | 28 | 27 | 28 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | S 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | S 18 | S 18 | S 17 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 |
| kJ | 186 | 116 | 121 | 218 | 213 | 210 | 201 | 195 | 189 | 181 | 225 | 222 | 399 | 395 | 364 | 427 | 422 | 417 | 412 | 401 | 376 | 544 | 537 | 447 |
Swell 2 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SSW 11 | ESE 5 | SE 5 | SE 5 | SSW 20 | S 20 | S 19 | S 19 | S 18 | S 18 | SSW 13 | SSW 13 | SSW 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | NNW 12 | NW 12 | E 5 |
| kJ | 23 | 24 | 42 | 3 | 4 | 3 | 77 | 194 | 192 | 188 | 235 | 404 | 170 | 218 | 222 | 212 | 215 | 161 | 101 | 101 | 106 | 27 | 22 | 9 |
Swell 3 Height (m) Direction Period (s) | ESE 6 | ESE 5 | ESE 5 | N 8 | SSW 21 | SSW 21 | SE 5 | W 11 | ESE 5 | W 13 | WNW 10 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | SW 19 | E 6 | NW 12 |
| kJ | 4 | 6 | 3 | 5 | 44 | 86 | 3 | 9 | 2 | 13 | 11 | 27 | 27 | 39 | 37 | 36 | 22 | 36 | 22 | 22 | 22 | 14 | 6 | 22 |
Wind waves Height (m) Direction Period (s) | E 6 | E 6 | E 5 | E 8 | E 8 | E 8 | E 8 | E 8 | E 5 | E 8 | E 8 | E 8 | E 8 | E 8 | E 5 | E 6 | E 6 | E 7 | E 7 | E 8 | ENE 5 | E 6 | E 6 | E 6 |
| kJ | 105 | 101 | 58 | 135 | 186 | 186 | 159 | 118 | 67 | 169 | 141 | 116 | 141 | 141 | 124 | 125 | 112 | 167 | 181 | 186 | 5 | 158 | 185 | 112 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 14 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 12 | 4 | 4 | 4 | 12 | 12 | 12 | 12 | 12 | 12 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Grandma's surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest