Grandma's Surf Break

Lat Long: 20.79° N 156.56° W

Grandma's 48 hour detailed Surf Forecast

Issued: 7 am 02 Oct 2026 (local time)

Forecast update in  hr  min

Today's Grandma's sea temperature is
26.9°C
0.0° 

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 (02 Oct):

  • Morning surf: Morning surf (02 Oct, local time) - 1.5ft (0.5m), 14s period with S swell.
  • Afternoon surf: Afternoon surf (02 Oct, local time) - 1.5ft (0.5m), 13s period with S swell.
  • Evening surf: Evening surf (02 Oct, local time) - 2ft (0.6m), 12s period with SSW swell.

The current surf forecast for Grandma's at 4PM is: 0.6m 13s primary swell from a South-southwest direction and 0.5m 8s secondary swell from a West direction (forecast issued at 07:00am October 02). An open ocean swell of 0.6m 5s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (HST) & DateWave HeightWave Period
Morning (02 Oct)1.5ft (0.5m)14s
Afternoon (02 Oct)1.5ft (0.5m)13s
Evening (02 Oct)2ft (0.6m)12s

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


Short Range Forecast

Mostly dry. Warm (max 27°C on Fri morning, min 24°C on Fri night). Wind will be generally light.

Friday
2
Saturday
3
Sunday
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
Rating
(10 max)
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
2
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
S
14
0.5
S
14
0.5
S
14
0.5
S
13
0.6
SSW
13
0.6
SSW
12
0.6
SSW
12
0.6
SSW
12
0.6
SSW
12
0.6
S
12
0.6
S
12
0.6
S
12
0.5
S
12
0.4
SSW
10
0.5
S
11
0.5
S
12
0.5
S
12
0.4
SSW
20
0.4
SSW
20
0.4
SSW
19
0.5
SSW
19
0.6
SSW
19
0.6
SSW
18
Wave Graph
Metric surfscale
Energy kJ
101
93
93
86
133
121
119
117
117
108
106
103
70
33
66
69
76
129
128
146
205
277
260
Wind (km/h)
0
ESE
5
SE
5
SSW
0
S
5
NE
5
N
10
NNE
10
NNE
10
NNE
15
NNE
5
N
5
N
10
NNE
15
NNE
15
NNE
20
NNE
15
NE
15
NE
15
NE
15
NNE
20
NNE
20
NNE
20
NNE
Wind State
glassy
glassy
cross-on
glassy
off
cross-off
cross-off
off
off
off
cross-off
glassy
cross-off
off
off
off
off
off
off
cross-off
off
off
cross-off
High Tide
9:05AM0.75m
9:29PM0.27m
10:16AM0.76m
10:59PM0.30m
11:20AM0.76m
Low Tide
4:45PM0.19m
2:12AM0.11m
5:54PM0.15m
3:33AM0.14m
6:39PM0.12m
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
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6:16
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6:18
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
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—
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6:13
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6:12
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6:10
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 mm
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Temp °C
26
26
27
26
26
26
25
24
24
25
27
27
26
25
25
25
24
25
27
27
27
25
25
Feels °C
30
30
30
30
29
29
27
25
25
26
29
30
28
26
26
25
24
25
27
26
26
25
24
  • 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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