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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 pm Monday 11 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 5PM is: 0.4m 17s primary swell from a South-southwest direction (forecast issued at 01:00pm May 11). An open ocean swell of 0.4m 11s is not directed at the surf break, a second open ocean swell of 0.4m 3s 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 ForecastSome drizzle, heaviest during Wed afternoon. Warm (max 27°C on Mon afternoon, min 22°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 11 | Tuesday 12 | Wednesday 13 | Thu 14 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 18 | 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 | E 6 | SSW 14 | S 13 | SSW 15 | SW 15 | S 13 | S 13 | |
61 | 60 | 101 | 101 | 58 | 54 | 86 | 84 | 84 | 129 | 82 | 42 | 38 | 42 | 41 | 66 | 65 | 0 | 37 | 31 | 21 | 33 | 30 | 30 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | off | off | off | cross-off | off | off | cross-off | off | off | off | off | off | cross-off | cross-off | glassy | cross-off | off | off | off | off | off | cross-off | |
High Tide | 12:43PM0.45m | 00:14AM0.49m | 1:25PM0.55m | 1:00AM0.44m | 2:07PM0.64m | 1:46AM0.39m | ||||||||||||||||||
Low Tide | 6:02PM0.15m | 6:29AM-0.03m | 7:12PM0.13m | 7:01AM-0.06m | 8:16PM0.10m | 7:34AM-0.09m | ||||||||||||||||||
 | | |  | | | | | | | |  | | | | |  |  |  | | | | | | |
 | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — |
 | — | — | 6:53 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | 6:55 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | |
Temp °C | 26 | 27 | 26 | 24 | 23 | 22 | 22 | 24 | 26 | 26 | 26 | 24 | 23 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 24 |
24 | 27 | 24 | 23 | 22 | 22 | 21 | 23 | 27 | 27 | 26 | 24 | 23 | 23 | 24 | 25 | 27 | 25 | 24 | 25 | 23 | 24 | 24 | 25 | |
Swell 1 Height (m) Direction Period (s) | NNW 12 | NNW 11 | NW 11 | NW 11 | NW 11 | NNE 7 | SSW 16 | SSW 16 | SSW 16 | S 16 | SSW 16 | NNW 10 | SE 7 | ESE 6 | NNW 10 | S 14 | NNW 10 | SE 6 | SSW 14 | SE 7 | N 9 | N 8 | SE 5 | NW 16 |
 kJ | 78 | 95 | 30 | 30 | 29 | 17 | 86 | 84 | 84 | 129 | 82 | 40 | 23 | 16 | 32 | 66 | 31 | 10 | 37 | 14 | 14 | 11 | 7 | 68 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | NW 11 | SE 6 | N 7 | N 7 | NNE 6 | NNW 10 | S 16 | NNW 10 | NNW 10 | SE 6 | SE 6 | S 14 | NNE 6 | ESE 7 | N 9 | SSW 15 | SW 15 | NNE 8 | S 13 |
| kJ | 61 | 60 | 101 | 101 | 58 | 29 | 10 | 8 | 8 | 8 | 42 | 42 | 33 | 33 | 10 | 10 | 65 | 6 | 5 | 15 | 21 | 33 | 14 | 30 |
Swell 3 Height (m) Direction Period (s) | S 12 | ESE 6 | SE 6 | SE 6 | SE 6 | SSW 17 | N 7 | NW 11 | NNW 12 | NNW 11 | N 6 | NNE 6 | S 15 | SSW 15 | SSW 14 | NW 10 | SE 6 | NNW 9 | NNW 9 | S 13 | S 13 | NNW 17 | S 13 | NNE 8 |
| kJ | 11 | 4 | 6 | 10 | 10 | 54 | 8 | 18 | 26 | 23 | 7 | 7 | 38 | 42 | 41 | 24 | 10 | 8 | 8 | 31 | 14 | 29 | 30 | 14 |
Wind waves Height (m) Direction Period (s) | E 6 | E 6 | NNE 3 | NE 3 | ENE 2 | — | E 6 | E 6 | E 6 | E 6 | E 6 | ESE 7 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | NNE 6 | NNE 3 | E 7 | E 6 | E 6 | E 8 |
| kJ | 100 | 157 | 3 | 2 | 1 | — | 149 | 108 | 75 | 148 | 130 | 19 | 272 | 196 | 188 | 144 | 148 | 211 | 13 | 2 | 24 | 20 | 125 | 177 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 4 | 12 | 12 | 12 | 12 | 12 | 12 | 4 | 4 | 4 | 12 | 12 | 12 | 12 | 12 | 15 | 188 | 12 | 12 | 12 | 12 | 4 | 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
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