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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 1 am Sunday 17 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
25.3° C
(Which is normal for this time of year)How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 4AM is: 0.4m 16s primary swell from a South-southwest direction and 0.5m 6s secondary swell from a South direction, 0.4m 14s secondary swell from a Southwest direction (forecast issued at 01:00am May 17). The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 1.5ft (0.4m) | 16s |
| Afternoon (17 May) | 1.5ft (0.5m) | 15s |
| Evening (17 May) | 2ft (0.6m) | 15s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Sun afternoon. Warm (max 27°C on Sun morning, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
SW 13 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 19 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 18 | SSW 15 | SSW 17 | SSW 15 | SSW 15 | |
57 | 89 | 95 | 133 | 133 | 146 | 146 | 142 | 140 | 118 | 136 | 183 | 184 | 108 | 105 | 104 | 105 | 173 | 121 | 121 | 167 | 264 | 169 | 172 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | cross-off | glassy | glassy | glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | off | off | off | off | cross-off | cross-off | glassy | cross-off | off | off | cross-off | |
High Tide | 4:09AM0.25m | 5:04PM0.84m | 5:03AM0.22m | 5:54PM0.84m | 6:05AM0.21m | 6:47PM0.80m | ||||||||||||||||||
Low Tide | 11:12PM0.04m | 9:30AM-0.10m | 00:10AM0.04m | 10:15AM-0.09m | 1:09AM0.04m | 11:03AM-0.05m | ||||||||||||||||||
 |  |  | |  |  | | | | | | | | | | | | | | | |  | | | |
 | — | 5:48 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:58 | — | — |
1 | — | — | — | — | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 1 | — | — | |
Temp °C | 25 | 24 | 26 | 27 | 27 | 27 | 25 | 25 | 24 | 24 | 25 | 27 | 26 | 26 | 25 | 24 | 24 | 24 | 25 | 26 | 27 | 26 | 24 | 24 |
28 | 26 | 28 | 31 | 30 | 30 | 28 | 27 | 27 | 27 | 27 | 30 | 29 | 28 | 27 | 26 | 26 | 26 | 27 | 29 | 29 | 27 | 24 | 25 | |
Swell 1 Height (m) Direction Period (s) | S 6 | S 6 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 17 | SSW 15 | SSW 15 |
 kJ | 26 | 16 | 95 | 133 | 133 | 146 | 146 | 142 | 140 | 118 | 136 | 183 | 183 | 108 | 105 | 104 | 105 | 173 | 113 | 115 | 167 | 264 | 169 | 172 |
Swell 2 Height (m) Direction Period (s) | SSW 17 | SW 14 | S 6 | SW 14 | S 7 | SW 21 | SW 21 | SW 21 | ESE 6 | SE 6 | ESE 8 | SW 19 | SW 19 | SW 19 | SSW 16 | SE 6 | SE 6 | SE 6 | SSW 18 | SSW 18 | NNW 11 | NNW 11 | ESE 6 | SE 6 |
| kJ | 57 | 52 | 9 | 54 | 8 | 117 | 117 | 117 | 7 | 10 | 13 | 96 | 184 | 96 | 51 | 10 | 9 | 9 | 121 | 121 | 12 | 13 | 12 | 10 |
Swell 3 Height (m) Direction Period (s) | SW 13 | SSW 16 | SW 14 | S 5 | NNW 10 | SSE 7 | SSE 6 | S 6 | SSW 21 | SSW 18 | SSW 20 | ESE 8 | SSE 5 | SSW 16 | SE 6 | SSW 16 | SSW 16 | SW 18 | ESE 6 | NNW 11 | SW 18 | ESE 6 | NNW 11 | NNW 11 |
| kJ | 42 | 89 | 54 | 9 | 20 | 9 | 8 | 7 | 44 | 31 | 37 | 13 | 5 | 51 | 10 | 51 | 52 | 49 | 7 | 12 | 49 | 3 | 12 | 11 |
Wind waves Height (m) Direction Period (s) | — | — | E 4 | E 4 | E 4 | E 4 | E 8 | E 5 | E 8 | E 8 | E 8 | E 8 | E 8 | NNE 2 | NNE 3 | E 6 | E 6 | E 6 | E 6 | E 8 | E 8 | E 6 | E 6 | E 6 |
| kJ | — | — | 13 | 19 | 19 | 14 | 273 | 56 | 466 | 427 | 266 | 304 | 338 | 2 | 3 | 162 | 205 | 149 | 143 | 297 | 298 | 184 | 264 | 221 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 13 | 4 | 12 | 12 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wind Speed (km/h)
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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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