Grandma's Surf Break

Lat Long: 20.79° N 156.56° W

Issued: 1 pm 10 Jun 2026 (local time)

Forecast update in  hr  min

Today's Grandma's sea temperature is
25.8° C

Normal for this time of year

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 (10 Jun):

  • Morning surf: Morning surf (10 Jun, local time) - 1ft (0.3m), 15s period with S swell.
  • Afternoon surf: Afternoon surf (10 Jun, local time) - 1ft (0.3m), 14s period with S swell.
  • Evening surf: Evening surf (10 Jun, local time) - 1ft (0.3m), 13s period with S swell.

The current surf forecast for Grandma's at 5PM is: 0.3m 13s primary swell from a South direction and 0.3m 10s secondary swell from a South direction (forecast issued at 01:00pm June 10). An open ocean swell of 0.8m 5s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (HST) & DateWave HeightWave Period
Morning (10 Jun)1ft (0.3m)15s
Afternoon (10 Jun)1ft (0.3m)14s
Evening (10 Jun)1ft (0.3m)13s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Wed afternoon. Warm (max 26°C on Wed afternoon, min 22°C on Fri night). Wind will be generally light.

Wed
10
Thursday
11
Friday
12
Sat
13
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
Rating
(10 max)
1
1
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
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)
0.3
S
14
0.3
S
14
0.3
S
13
0.3
S
13
0.3
S
13
0.3
S
13
0.3
S
18
0.3
S
18
0.4
S
18
0.4
S
18
0.3
S
18
0.3
S
17
0.5
S
16
0.5
S
16
0.5
S
16
0.4
S
16
0.4
SW
20
0.4
SW
19
0.4
SW
19
0.6
S
15
0.4
SSW
24
0.4
SSW
24
0.5
SSW
24
0.6
SSW
23
Wave Graph
Metric surfscale
Energy kJ
36
33
32
31
31
31
58
55
98
98
55
50
127
127
127
81
97
96
106
150
222
218
314
426
Wind (km/h)
0
W
5
E
10
NE
10
NNE
10
NNE
10
NE
10
NE
10
NE
0
ENE
5
ENE
10
NNE
15
N
10
NNE
10
NNE
10
NNE
10
NNE
0
WSW
5
ESE
5
ENE
10
NE
10
NNE
10
NNE
10
NE
10
NE
Wind State
glassy
glassy
off
off
cross-off
off
off
off
glassy
glassy
off
cross-off
cross-off
off
off
off
glassy
glassy
glassy
off
off
off
off
off
High Tide
1:00PM0.64m
00:17AM0.34m
1:46PM0.73m
1:15AM0.30m
2:31PM0.81m
2:12AM0.26m
Low Tide
7:15PM0.17m
6:13AM-0.08m
8:26PM0.13m
6:55AM-0.10m
9:28PM0.09m
7:39AM-0.11m
part cloud
rain showers
rain showers
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:43
5:43
5:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:07
7:07
7:07
 mm
1
1
Temp °C
26
26
25
25
24
23
23
24
26
26
26
24
24
23
23
24
25
25
25
24
23
23
22
24
Feels °C
29
29
27
27
26
24
25
25
29
28
27
25
26
24
25
25
27
27
27
26
24
24
23
24
Swell 1
Height (m)
Direction
Period (s)
0.3
S
14
0.3
S
14
0.3
S
13
0.3
S
13
0.3
S
13
0.3
S
13
0.3
S
13
0.3
S
18
0.4
S
18
0.4
S
18
0.3
S
18
0.3
S
17
0.5
S
16
0.5
S
16
0.5
S
16
0.4
S
16
0.4
S
16
0.4
S
15
0.5
S
15
0.6
S
15
0.5
S
15
0.4
SSW
24
0.5
SSW
24
0.6
SSW
23
Energy kJ
36
33
32
31
31
31
31
55
98
98
55
50
127
127
127
81
78
69
106
150
104
218
314
426
Swell 2
Height (m)
Direction
Period (s)
0.3
S
11
0.3
S
10
0.3
S
10
0.3
S
10
0.3
S
10
0.3
S
10
0.3
S
10
0.3
S
13
0.3
SSE
10
0.3
S
13
0.3
S
12
0.3
S
12
0.3
SSE
10
0.4
S
12
0.4
SSE
12
0.4
SSE
12
0.4
SSE
12
0.4
SW
19
0.4
SW
19
0.4
SW
19
0.4
SSW
24
0.4
S
15
0.5
SW
18
0.5
SW
18
Energy kJ
20
19
18
18
18
18
18
31
19
28
27
26
18
45
48
48
47
96
96
96
222
67
159
155
Swell 3
Height (m)
Direction
Period (s)
0.2
WNW
12
0.3
SE
5
0.2
NNE
5
0.2
WNW
12
0.2
ESE
5
0.2
S
19
0.3
S
18
0.2
S
10
0.3
S
13
0.3
S
10
0.3
NNE
4
0.2
S
10
0.3
S
12
0.3
NW
10
0.2
WNW
10
0.2
WNW
10
0.4
SW
20
0.4
S
12
0.3
S
12
0.3
SSW
26
0.3
N
10
0.4
SW
19
0.4
S
14
0.4
S
14
Energy kJ
14
4
3
13
2
29
58
8
30
17
4
7
26
17
10
9
97
44
25
130
16
93
64
57
Wind waves
Height (m)
Direction
Period (s)
0.7
E
5
0.2
N
5
0.8
E
5
1.3
E
8
1.2
E
8
1.1
E
8
1.1
E
8
1
E
8
0.7
E
4
0.8
E
8
0.5
E
4
0.6
E
4
0.2
NNW
10
0.5
N
3
0.5
N
3
0.6
E
7
0.5
E
7
0.6
E
7
0.7
E
7
Energy kJ
21
2
30
193
164
137
137
113
18
71
6
10
9
5
6
36
25
35
47
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
Distance (km)
12
12
4
12
12
12
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Best forecast wave conditions in Maui
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
1
3
3
4
4
4
3
1
1
1
2
3
3
4
4
2
2
2
3
3
3
3
3
3
Header Global
Rating
(10 max)
9
8
7
6
7
7
6
6
6
6
7
6
7
9
9
8
7
6
5
5
5
5
5
5
  • 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

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