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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 am Monday 01 Jun 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 normal for this time of year)How big are the waves at Grandma's today (01 Jun):
- Morning surf: Morning surf (01 Jun, local time) - 2ft (0.6m), 18s period with SSW swell.
- Afternoon surf: Afternoon surf (01 Jun, local time) - 2.5ft (0.8m), 18s period with SSW swell.
- Evening surf: Evening surf (01 Jun, local time) - 2.5ft (0.7m), 17s period with SSW swell.
The current surf forecast for Grandma's at 11AM is: 0.7m 18s primary swell from a South-southwest direction and 0.6m 14s secondary swell from a South-southwest direction (forecast issued at 07:00am June 01). An open ocean swell of 1.1m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Jun) | 2ft (0.6m) | 18s |
| Afternoon (01 Jun) | 2.5ft (0.8m) | 18s |
| Evening (01 Jun) | 2.5ft (0.7m) | 17s |
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 2mm), mostly falling on Mon afternoon. Warm (max 27°C on Tue afternoon, min 23°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 1 | Tuesday 2 | Wednesday 3 | Thu 4 | |||||||||||||||||||||
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 | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 14 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 20 | S 16 | SSW 19 | S 16 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | S 15 | SSW 17 | SSW 16 | SSW 16 | S 16 | SSW 16 | SSW 16 | SSW 16 | |
213 | 260 | 329 | 418 | 413 | 315 | 372 | 568 | 395 | 522 | 497 | 516 | 929 | 427 | 547 | 540 | 484 | 847 | 778 | 768 | 734 | 636 | 527 | 520 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | glassy | glassy | glassy | glassy | glassy | glassy | cross-off | off | glassy | glassy | off | off | off | off | |
High Tide | 4:31AM0.23m | 5:16PM0.75m | 5:17AM0.22m | 5:55PM0.73m | 6:09AM0.21m | 6:35PM0.71m | ||||||||||||||||||
Low Tide | 9:36AM-0.02m | 00:25AM0.08m | 10:15AM-0.00m | 1:07AM0.08m | 10:56AM0.03m | 1:49AM0.07m | ||||||||||||||||||
 |  |  | |  | | | | | | | | |  | | | | | | | | | | | |
 | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | 5:43 |
 | — | — | — | — | 7:02 | — | — | — | — | — | — | — | 7:02 | — | — | — | — | — | — | — | 7:04 | — | — | 7:04 |
— | — | — | — | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 25 | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 25 | 26 | 27 | 27 | 26 | 25 | 24 | 24 | 25 | 27 | 27 | 27 | 24 | 24 | 23 |
24 | 26 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 29 | 31 | 31 | 30 | 29 | 27 | 27 | 27 | 30 | 30 | 29 | 24 | 24 | 24 | |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | S 16 | SSW 16 | S 16 | SSW 18 | SSW 15 | SSW 18 | SSW 18 | S 15 | SSW 17 | SSW 16 | SSW 16 | S 16 | SSW 16 | SSW 16 | SSW 16 |
 kJ | 213 | 158 | 329 | 418 | 413 | 315 | 372 | 568 | 341 | 522 | 421 | 516 | 929 | 380 | 547 | 540 | 484 | 847 | 778 | 768 | 734 | 636 | 527 | 520 |
Swell 2 Height (m) Direction Period (s) | SSW 19 | SSW 18 | SSW 14 | SSW 13 | S 13 | S 13 | S 13 | S 13 | SSW 20 | SSW 19 | SSW 19 | SSW 19 | NNW 12 | SSW 18 | S 15 | SSW 14 | SSW 18 | SE 7 | SE 7 | SE 6 | NNW 9 | NNW 9 | NNW 9 | ESE 6 |
| kJ | 207 | 260 | 152 | 102 | 87 | 126 | 126 | 125 | 395 | 502 | 497 | 387 | 47 | 427 | 343 | 280 | 326 | 11 | 11 | 14 | 29 | 16 | 17 | 16 |
Swell 3 Height (m) Direction Period (s) | ESE 8 | N 10 | N 10 | N 10 | SSW 22 | S 21 | SSW 21 | N 9 | S 13 | N 9 | N 9 | NNW 12 | NNW 12 | NNW 11 | N 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | — | — | NNW 10 |
| kJ | 6 | 31 | 31 | 30 | 92 | 233 | 258 | 14 | 121 | 14 | 14 | 50 | 28 | 41 | 61 | 36 | 34 | 33 | 19 | 18 | 17 | — | — | 18 |
Wind waves Height (m) Direction Period (s) | N 10 | E 8 | E 8 | E 8 | N 10 | E 5 | N 9 | E 5 | E 5 | E 5 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | N 9 | ESE 6 | E 6 |
| kJ | 32 | 144 | 144 | 144 | 30 | 62 | 26 | 54 | 42 | 41 | 95 | 132 | 143 | 232 | 124 | 176 | 213 | 291 | 252 | 219 | 128 | 41 | 13 | 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 | 4 | 4 | 4 | 4 |
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)
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