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Grandma's Surf Forecast
/ HAW – Maui (46 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Grandma's surfForecast / HAW – Maui / USA
48hr Weather and Surf, issued 7 pm Sunday 10 May 2026 HSTForecast update in hr min s Forecast update imminent
Grandma's surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Grandma's sea temperature is
25.5° C
(Which is slightly warmer than usual)How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 12AM is: 0.3m 6s primary swell from a Southeast direction (forecast issued at 07:00pm May 10). An open ocean swell of 0.4m 11s is not directed at the surf break, a second open ocean swell of 0.3m 6s is not directed at the surf break, a second open ocean swell of 1.2m 6s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 May) | 1ft (0.3m) | 18s |
| Afternoon (11 May) | 1ft (0.3m) | 18s |
| Evening (11 May) | 1.5ft (0.4m) | 17s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 22°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Sun 10 | Monday 11 | Tuesday 12 | Wed 13 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 13 | S 13 | SE 6 | SSW 13 | SSW 19 | SSW 19 | NW 12 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | S 16 | SSW 16 | S 16 | S 15 | SSW 15 | SSW 14 | S 14 | S 14 | SW 15 | |
17 | 14 | 5 | 32 | 35 | 68 | 67 | 60 | 101 | 101 | 58 | 54 | 86 | 84 | 84 | 129 | 82 | 42 | 39 | 42 | 41 | 66 | 65 | 34 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | off | off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | cross-off | off | off | glassy | cross-off | |
High Tide | 11:26PM0.53m | 12:43PM0.45m | 00:14AM0.49m | 1:25PM0.55m | 1:00AM0.44m | |||||||||||||||||||
Low Tide | 4:46PM0.16m | 5:58AM0.00m | 6:02PM0.15m | 6:29AM-0.03m | 7:12PM0.13m | 7:01AM-0.06m | ||||||||||||||||||
 |  |  | | | | | | | | | | | | |  | | | | | | | | | |
 | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:48 | — | — | — |
 | 6:53 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | 6:54 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 26 | 24 | 23 | 23 | 23 | 24 | 26 | 26 | 26 | 23 | 23 | 22 | 22 | 24 | 26 | 26 | 26 | 23 | 23 | 23 | 23 | 24 | 26 | 27 |
26 | 24 | 22 | 23 | 22 | 23 | 24 | 24 | 25 | 21 | 22 | 21 | 21 | 23 | 26 | 26 | 25 | 22 | 23 | 24 | 24 | 24 | 28 | 28 | |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NNW 10 | NNW 10 | NNW 12 | NNW 12 | NNW 12 | NW 12 | NNW 11 | NW 11 | NNW 11 | NW 11 | NW 11 | SSW 16 | SSW 16 | SSW 16 | S 16 | SSW 16 | N 10 | SE 7 | NW 10 | NNW 10 | S 14 | NNW 10 | SE 6 |
 kJ | 42 | 42 | 43 | 81 | 81 | 79 | 67 | 69 | 30 | 46 | 29 | 29 | 86 | 84 | 84 | 129 | 82 | 52 | 23 | 25 | 32 | 66 | 31 | 6 |
Swell 2 Height (m) Direction Period (s) | N 6 | N 6 | N 6 | SSW 13 | SSW 12 | SSW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | NW 11 | SE 6 | N 7 | NNE 6 | NW 10 | SE 7 | NNW 10 | SSW 15 | SE 6 | NNW 10 | S 14 | SW 15 |
| kJ | 10 | 6 | 6 | 32 | 29 | 68 | 61 | 60 | 101 | 101 | 58 | 54 | 29 | 10 | 8 | 8 | 27 | 12 | 33 | 42 | 9 | 31 | 65 | 34 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | S 13 | SE 6 | SE 6 | SSW 19 | ESE 6 | ESE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | NW 11 | SE 6 | NNW 11 | NNE 6 | S 16 | S 15 | S 15 | SSW 14 | SE 7 | SE 6 | NNW 9 |
| kJ | 17 | 14 | 5 | 5 | 35 | 4 | 3 | 5 | 5 | 6 | 10 | 10 | 10 | 29 | 6 | 23 | 8 | 42 | 39 | 38 | 41 | 7 | 7 | 8 |
Wind waves Height (m) Direction Period (s) | E 5 | — | E 6 | E 6 | E 5 | — | NNE 6 | E 6 | N 3 | NNE 3 | NE 3 | ENE 3 | ENE 3 | E 6 | E 6 | E 6 | E 6 | E 6 | — | ESE 7 | E 6 | E 6 | E 7 | E 6 |
| kJ | 52 | — | 91 | 88 | 73 | — | 6 | 133 | 4 | 4 | 3 | 1 | 1 | 125 | 92 | 169 | 211 | 209 | — | 17 | 165 | 96 | 192 | 204 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 4 | 4 | 12 | 12 | 12 | 4 | 12 | 4 | 12 | 12 |
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)
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.
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