Surf Forecasts:
How big are the waves at Grandma's today (18 Oct):
- Morning surf: Morning surf (18 Oct, local time) - 1.5ft (0.4m), 13s period with S swell.
- Afternoon surf: Afternoon surf (18 Oct, local time) - 1.5ft (0.4m), 13s period with S swell.
- Evening surf: Evening surf (18 Oct, local time) - 1.5ft (0.4m), 17s period with SW swell.
The current surf forecast for Grandma's at 8AM is: 0.4m 13s primary swell from a South direction (forecast issued at 01:00am October 18). An open ocean swell of 0.4m 11s is not directed at the surf break, a second open ocean swell of 1.3m 6s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Oct) | 1.5ft (0.4m) | 13s |
| Afternoon (18 Oct) | 1.5ft (0.4m) | 13s |
| Evening (18 Oct) | 1.5ft (0.4m) | 17s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Tue afternoon, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 18 | Monday 19 | Tuesday 20 | ||||||||||||||||||||||
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) | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | SW 17 | SW 17 | S 12 | S 12 | SW 17 | S 12 | S 12 | S 12 | S 12 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | S 11 | S 11 | SSW 15 | SSW 15 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 54 | 54 | 54 | 53 | 52 | 28 | 71 | 70 | 45 | 25 | 45 | 44 | 25 | 25 | 25 | 62 | 39 | 39 | 40 | 40 | 9 | 9 | 21 | 22 |
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 | off | off | off | off | off | off | off | off | off |
High Tide | 10:19AM0.67m | 11:22PM0.34m | 11:14AM0.66m | 00:14AM0.39m | 12:02PM0.65m | |||||||||||||||||||
Low Tide | 2:27AM0.18m | 5:41PM0.16m | 3:44AM0.20m | 6:15PM0.13m | 4:59AM0.20m | 6:42PM0.10m | ||||||||||||||||||
 |  |  | | | | | | | | | | | | | | | | | | | | | | |
 | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:59 | — | — | — | — | — | — | — | 5:59 | — | — | — | — | — | — | — | 5:58 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 25 | 27 | 27 | 26 | 25 | 25 | 24 | 24 | 24 | 27 | 27 | 27 | 25 | 25 | 24 | 24 | 25 | 27 | 28 | 27 | 24 | 24 |
Feels °C | 25 | 24 | 25 | 26 | 27 | 24 | 24 | 25 | 24 | 24 | 24 | 28 | 28 | 27 | 26 | 26 | 26 | 25 | 25 | 28 | 28 | 26 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | N 11 | N 13 | S 13 | N 12 | N 12 | N 11 | NNW 11 | N 11 | N 11 | N 11 | NNW 11 | S 12 | SE 6 | SE 5 | SE 6 | SE 6 | SE 6 | SE 5 | SE 5 | SE 6 | SE 6 | SE 6 | SSW 15 | ESE 6 |
| kJ | 57 | 121 | 54 | 72 | 70 | 66 | 41 | 62 | 58 | 57 | 38 | 44 | 9 | 7 | 9 | 8 | 9 | 7 | 4 | 9 | 9 | 9 | 21 | 15 |
Swell 2 Height (m) Direction Period (s) | S 13 | S 13 | NNW 11 | S 13 | S 13 | S 13 | SW 17 | S 12 | S 12 | S 12 | S 12 | NNW 11 | N 11 | S 12 | S 12 | SW 16 | SW 16 | NNE 7 | SW 16 | NNE 7 | NNE 7 | NNE 7 | N 7 | SSW 15 |
| kJ | 54 | 54 | 38 | 53 | 52 | 28 | 71 | 45 | 45 | 25 | 25 | 22 | 21 | 25 | 25 | 62 | 39 | 9 | 40 | 10 | 10 | 4 | 3 | 22 |
Swell 3 Height (m) Direction Period (s) | SE 6 | SE 6 | N 12 | NNE 7 | NNE 7 | SE 6 | SE 6 | SW 17 | SE 6 | SE 6 | SW 17 | SE 6 | S 12 | N 11 | N 11 | S 12 | NNE 7 | SW 16 | NNE 7 | SW 16 | S 11 | S 11 | S 11 | N 6 |
| kJ | 9 | 9 | 49 | 10 | 11 | 5 | 9 | 70 | 10 | 8 | 45 | 9 | 25 | 21 | 21 | 25 | 10 | 39 | 9 | 40 | 9 | 9 | 9 | 3 |
Wind waves Height (m) Direction Period (s) | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | — | ESE 6 | ENE 2 | E 6 | — | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 7 | E 7 | E 6 | E 6 | E 6 | SE 5 | — |
| kJ | 149 | 165 | 119 | 124 | 124 | 148 | — | 15 | 1 | 175 | — | 181 | 219 | 170 | 144 | 181 | 165 | 178 | 212 | 219 | 245 | 188 | 7 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 4 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 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)
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