Grandma's Surf Break

Lat Long: 20.79° N 156.56° W

Grandma's 48 hour detailed Surf Forecast

Issued: 7 pm 02 Sep 2026 (local time)

Forecast update in  hr  min

Today's Grandma's sea temperature is
26.9°C
0.1° 

Grandma's surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Grandma's today (03 Sep):

  • Afternoon surf: Afternoon surf (03 Sep, local time) - 2.5ft (0.8m), 16s period with S swell.
  • Evening surf: Evening surf (03 Sep, local time) - 2.5ft (0.8m), 15s period with S swell.

The current surf forecast for Grandma's at 12AM is: 0.7m 15s primary swell from a South direction and 0.3m 11s secondary swell from a South direction (forecast issued at 07:00pm September 02). An open ocean swell of 0.4m 7s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (HST) & DateWave HeightWave Period
Morning (03 Sep)--
Afternoon (03 Sep)2.5ft (0.8m)16s
Evening (03 Sep)2.5ft (0.8m)15s

Table - waves today at Grandma's. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 28°C on Thu morning, min 24°C on Thu night). Wind will be generally light.

Wed
2
Thursday
3
Friday
4
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
Rating
(10 max)
2
2
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
S
16
0.8
S
15
0.7
S
15
0.7
S
15
0.7
S
15
0.7
S
15
0.6
S
14
0.6
S
14
0.6
S
14
0.7
S
14
0.6
S
14
1
S
13
1
S
12
1.1
S
13
1.1
S
12
1
S
12
1.2
S
13
1.1
S
12
1.1
S
11
Wave Graph
Metric surfscale
Energy kJ
310
291
215
212
209
209
148
146
142
178
138
330
287
398
359
259
463
330
300
Wind (km/h)
15
NE
15
NE
15
NE
15
NE
15
NE
15
NE
10
NE
15
NE
20
NE
25
NNE
20
NNE
20
NE
20
NE
15
NE
20
NE
15
NE
20
NNE
20
NNE
15
NNE
Wind State
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
High Tide
7:26PM0.35m
9:35AM0.70m
8:58PM0.29m
10:46AM0.74m
10:46PM0.28m
Low Tide
2:50PM0.25m
1:38AM0.06m
4:44PM0.24m
2:38AM0.07m
6:25PM0.20m
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:40
6:39
6:38
 mm
Temp °C
28
26
25
25
25
26
28
28
27
25
25
25
24
25
27
27
27
25
25
Feels °C
28
26
25
26
26
27
30
29
26
24
24
24
23
25
26
27
25
24
26
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

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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