Grandma's Surf Break

Lat Long: 20.79° N 156.56° W

Issued: 1 am 22 Jun 2026 (local time)

Forecast update in  hr  min

Today's Grandma's sea temperature is
26.4° C

Slightly warmer than usual

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 (22 Jun):

  • Morning surf: Morning surf (22 Jun, local time) - 1.5ft (0.5m), 17s period with S swell.
  • Afternoon surf: Afternoon surf (22 Jun, local time) - 1.5ft (0.5m), 16s period with S swell.
  • Evening surf: Evening surf (22 Jun, local time) - 1.5ft (0.5m), 16s period with S swell.

The current surf forecast for Grandma's at 7AM is: 0.5m 18s primary swell from a South direction and 0.5m 12s secondary swell from a South direction (forecast issued at 01:00am June 22). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (HST) & DateWave HeightWave Period
Morning (22 Jun)1.5ft (0.5m)17s
Afternoon (22 Jun)1.5ft (0.5m)16s
Evening (22 Jun)1.5ft (0.5m)16s

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 5mm), mostly falling on Tue afternoon. Warm (max 28°C on Wed afternoon, min 24°C on Mon night). Wind will be generally light.

Monday
22
Tuesday
23
Wednesday
24
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
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
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
18
0.5
S
18
0.5
S
18
0.4
SSW
17
0.5
S
16
0.5
S
16
0.5
S
16
0.5
S
16
0.4
SSW
16
0.4
SSW
16
0.4
S
12
0.4
SSW
15
0.3
SSW
15
0.4
SSW
15
0.4
SSW
19
0.4
SSW
19
0.4
SSW
19
0.4
SSW
19
0.6
SSW
18
0.6
SSW
18
0.7
SSW
18
0.7
SSW
18
0.7
SSW
18
0.6
SSW
17
Wave Graph
Metric surfscale
Energy kJ
160
158
158
97
132
131
131
131
86
85
43
72
42
72
124
124
125
123
240
240
318
318
318
229
Wind (km/h)
10
NNE
10
NE
10
NNE
10
N
10
ENE
15
NNE
15
NNE
10
NNE
10
NNE
10
NNE
10
NNE
5
NNW
5
ENE
5
NNE
10
NNE
10
NNE
10
NNE
15
NNE
15
NNE
10
NNE
10
NE
15
NNE
15
NNE
15
NNE
Wind State
off
off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
glassy
cross-off
glassy
off
off
off
off
off
off
off
cross-off
off
off
High Tide
11:24AM0.51m
10:22PM0.41m
12:17PM0.59m
11:17PM0.34m
1:04PM0.65m
Low Tide
4:07AM-0.00m
4:57PM0.26m
4:42AM-0.01m
6:40PM0.24m
5:19AM-0.02m
8:02PM0.21m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
thunderstorm
rain showers
rain showers
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:46
5:46
5:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:09
7:09
 mm
1
2
2
Temp °C
24
24
25
27
27
27
25
25
24
24
25
27
27
27
26
25
25
24
25
27
28
27
26
25
Feels °C
25
26
27
28
28
26
25
27
26
26
27
30
30
30
28
27
27
25
26
29
30
27
27
26
Swell 1
Height (m)
Direction
Period (s)
0.6
S
13
0.5
S
13
0.5
S
12
0.5
S
12
0.5
S
16
0.5
S
16
0.5
S
16
0.5
S
16
0.4
SSW
16
0.4
SSW
16
0.4
S
12
0.4
SSW
15
0.3
SSW
15
0.4
SSW
15
0.4
SSW
15
0.4
SSW
19
0.4
SSW
19
0.4
SSW
19
0.6
SSW
18
0.6
SSW
18
0.7
SSW
18
0.7
SSW
18
0.7
SSW
18
0.6
SSW
17
Energy kJ
117
78
74
71
132
131
131
131
86
85
43
72
42
72
76
124
125
123
240
240
318
318
318
229
Swell 2
Height (m)
Direction
Period (s)
0.5
S
18
0.5
S
18
0.5
S
18
0.4
SSW
17
0.4
S
12
0.5
S
12
0.5
S
12
0.4
S
12
0.4
S
12
0.4
S
12
0.3
SSW
15
0.3
S
12
0.3
N
7
0.3
S
11
0.4
SSW
19
0.4
SSW
16
0.4
SSW
16
0.4
SSW
16
0.4
SE
6
0.3
SE
5
0.3
SSE
10
0.5
N
6
0.3
N
8
0.3
SE
6
Energy kJ
160
158
158
97
44
69
69
44
44
44
43
24
9
22
124
82
85
84
9
5
21
18
10
6
Swell 3
Height (m)
Direction
Period (s)
0.3
SW
16
0.2
N
7
0.2
N
7
0.2
SSW
15
0.2
NNE
5
0.3
N
6
0.3
SW
15
0.3
ESE
5
0.4
SE
5
0.3
N
8
0.3
N
8
0.2
SSW
14
0.3
S
11
0.2
SSW
21
0.4
N
9
0.3
N
8
0.3
N
8
0.4
SE
6
0.3
N
8
0.3
N
8
0.2
N
8
0.3
SSE
10
0.3
SE
6
0.3
N
8
Energy kJ
40
4
4
21
2
7
33
5
7
11
10
20
22
42
25
12
12
9
12
12
5
20
6
11
Wind waves
Height (m)
Direction
Period (s)
0.6
E
4
0.6
E
4
0.7
ESE
4
0.7
E
4
0.9
E
5
0.4
NNE
6
1.1
E
5
1
E
5
0.7
E
5
0.7
E
6
0.8
E
6
0.9
E
5
1
E
5
1.1
E
6
1.3
E
6
1.5
E
6
1.3
E
6
1.2
E
6
0.3
NNE
5
1.3
E
5
1.2
E
6
1.3
E
6
Energy kJ
15
13
18
20
34
13
64
53
20
32
44
43
54
72
108
165
124
92
5
93
92
112
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
1
2
2
2
1
1
1
1
1
1
1
1
2
2
1
2
2
2
2
2
2
Distance (km)
4
4
4
4
12
12
12
4
4
4
4
4
12
4
4
4
4
4
12
4
4
4
12
4
Best forecast wave conditions in Maui
Rating
(10 max)
2
1
1
1
2
2
2
1
1
1
1
1
1
1
1
2
2
1
2
2
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
2
3
2
1
3
3
3
3
3
2
1
1
1
2
3
3
3
4
2
2
2
3
3
3
Header Global
Rating
(10 max)
6
5
5
5
5
5
5
5
5
5
6
7
7
9
8
9
8
8
7
7
6
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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