Ammonias surfForecast / HAW – Kaua'i / USA

information circle16 Day Weather and Surf, issued 1 am Saturday 30 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
Ammonias surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ammonias sea temperature is
25.1° C
(Which is normal for this time of year)

Ammonias surf forecast from 30 May 2026:

  • Most powerful swell: Tuesday 2 Jun, 8PM (local time) - 5ft (1.5m), 18s period, S swell with 1,437 kJ wave energy.

Best Forecast Surf Conditions for Ammonias this week:

The most powerful waves expected at Ammonias in the next 16 days are 1.5m 18s and forecast to arrive on Tuesday (Jun 02) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 11s period and expected on Thursday (Jun 04) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Tue 2nd Jun)5ft (1.5m) 18s

Table - best surf conditions forecast for Ammonias over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Sat night. Warm (max 25°C on Mon afternoon, min 22°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Tue afternoon. Warm (max 25°C on Tue afternoon, min 23°C on Tue morning). Wind will be generally light.

Saturday
30
Sunday
31
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
2
0
1
1
1
1
2
2
2
2
0
2
2
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
S
17
1
S
16
0.9
SSW
16
0.9
SSW
15
0.8
SSW
15
0.7
S
19
0.9
S
18
1
S
18
1
S
16
1
S
20
1.2
S
16
1.3
S
18
1.4
SSW
16
1.4
SSW
16
1.2
SSW
16
1.1
SSW
15
1
S
14
0.9
SSW
14
1.8
ENE
7
1.7
ENE
7
1.6
ENE
7
Wave Graph
Metric surfscale
Energy kJ
596
535
416
375
284
369
515
632
548
753
734
1039
1055
1016
730
551
423
341
337
319
292
Wind (km/h)
20
ENE
15
ENE
15
ENE
15
ENE
15
ENE
15
NE
15
ENE
20
NE
20
NE
25
NE
25
ENE
20
ENE
25
E
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross-on
cross
cross
cross
High Tide
3:54PM0.64m
2:46AM0.16m
4:28PM0.64m
3:19AM0.16m
5:03PM0.63m
3:53AM0.15m
5:41PM0.61m
4:31AM0.15m
6:20PM0.59m
5:22AM0.15m
6:59PM0.57m
6:42AM0.15m
7:37PM0.54m
Low Tide
11:22PM0.12m
8:32AM-0.06m
00:00AM0.12m
9:06AM-0.05m
00:39AM0.12m
9:42AM-0.03m
1:23AM0.12m
10:19AM-0.01m
2:08AM0.12m
10:57AM0.02m
2:50AM0.11m
11:39AM0.06m
3:25AM0.09m
clear
clear
rain showers
rain showers
clear
clear
clear
clear
part cloud
part cloud
rain showers
rain showers
rain showers
rain showers
clear
clear
clear
rain showers
rain showers
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:52
5:52
5:52
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:16
7:16
7:17
7:17
2
1
1
2
2
1
2
1
1
Temp °C
24
24
23
24
24
24
24
25
23
24
25
24
24
24
23
24
25
23
24
24
23
23
23
23
24
25
25
24
24
22
23
25
24
24
23
22
22
23
21
22
22
21
Swell 1
Height (m)
Direction
Period (s)
1
S
17
1
S
16
0.9
SSW
16
0.9
SSW
15
0.8
SSW
15
0.8
SSW
14
0.9
S
18
1
S
18
1
S
16
1.2
S
16
1.2
S
16
1.3
S
18
1.4
SSW
16
1.4
SSW
16
1.2
SSW
16
1.1
SSW
15
1
S
14
0.9
N
13
0.9
N
12
0.8
N
11
0.6
S
13
Energy kJ
596
535
416
375
284
276
515
632
548
752
734
1039
1055
1016
730
551
423
259
224
152
126
Swell 2
Height (m)
Direction
Period (s)
0.5
S
12
0.5
S
12
0.6
N
8
0.5
N
8
0.4
SSE
10
0.7
S
19
0.7
SSW
14
0.6
S
13
0.7
S
21
1
S
20
0.9
SSW
19
0.8
SSW
14
0.4
NNW
9
0.5
N
11
0.6
SE
8
0.8
N
11
0.9
N
11
0.9
SSW
14
0.8
SSW
14
0.7
SSW
13
0.6
N
11
Energy kJ
69
68
51
34
37
369
207
125
436
753
621
276
27
58
50
166
202
341
261
187
79
Swell 3
Height (m)
Direction
Period (s)
0.4
NNW
10
0.5
N
8
0.4
S
11
0.4
S
11
0.4
NNE
8
0.6
ENE
7
0.5
N
10
0.5
N
9
0.6
S
13
0.5
N
12
0.6
N
11
0.6
N
10
0.2
N
11
0.1
SE
10
0.6
N
12
0.6
SE
8
0.6
SE
8
0.5
SE
8
0.5
SE
8
0.3
SE
8
0.4
NE
10
Energy kJ
31
37
39
36
20
43
46
41
125
73
86
68
10
4
104
48
57
29
34
11
23
Wind waves
Height (m)
Direction
Period (s)
1.2
ENE
7
1.2
ENE
7
1.1
ENE
7
0.9
ENE
7
0.9
ENE
7
0.8
ENE
4
0.9
ENE
7
1
ENE
7
1.1
ENE
6
1.3
ENE
6
1.4
ENE
6
1.3
ENE
6
1.5
ENE
6
1.6
E
7
1.6
ENE
6
1.6
E
7
1.6
E
7
1.7
E
7
1.8
ENE
7
1.7
ENE
7
1.6
ENE
7
Energy kJ
140
148
125
86
97
21
97
104
74
136
161
132
176
247
225
226
233
270
337
319
292
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
2
2
3
3
3
4
4
4
4
4
4
3
3
3
3
3
2
1
Distance (km)
31
31
12
15
12
16
31
16
16
16
16
16
31
16
118
31
38
16
16
16
16
Best forecast wave conditions in Kaua'i
Rating
(10 max)
3
3
3
2
2
3
3
3
4
4
4
4
4
4
3
3
3
3
2
2
Best forecast wave conditions in United States
Rating
(10 max)
3
3
4
2
2
4
4
4
4
4
4
4
4
4
4
3
3
4
3
4
4
Header Global
Rating
(10 max)
7
7
6
5
5
4
4
5
5
4
5
4
4
5
4
5
4
4
4
5
9
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Ammonias Surf forecast

The above surf forecast table for Ammonias provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ammonias can be found by selecting the local surf guide option on the grey menu. Our Ammonias surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ammonias) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Ammonias may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a vacation in Kaua'i? If you are looking for accommodation near Ammonias, camping, hotels and condos and appartments in Kaua'i, consider staying in Nawiliwili which is 2 km (1 miles) away. Alternatively, find information about places to stay and car hire in Lihue - Kauai which is 3 km (2 miles) away

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