Ammonias surfForecast / HAW – Kaua'i / USA

information circle16 Day Weather and Surf, issued 7 am Saturday 23 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
25.3° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Ammonias this week:

The most powerful waves expected at Ammonias in the next 16 days are 3.0m 8s and forecast to arrive on Saturday (May 23) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 14s period and expected on Wednesday (May 27) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Sat 23rd May)10ft (3.0m) 8s

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 6mm), mostly falling on Sat morning. Warm (max 24°C on Mon morning, min 22°C on Sat night). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Tue night. Warm (max 24°C on Tue morning, min 22°C on Wed night). Wind will be generally light.

Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
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
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
1
0
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
ENE
8
2.5
ENE
9
2.5
ENE
8
2.2
ENE
8
2.5
ENE
8
2.4
ENE
8
2.2
ENE
8
2
ENE
8
2.1
ENE
8
1.9
ENE
8
1.9
ENE
8
2.2
ENE
7
1.8
ENE
7
1.7
ENE
7
1.6
ENE
7
1.7
ENE
7
1.8
ENE
7
0.7
S
21
0.9
S
20
1
S
19
1
S
18
Wave Graph
Metric surfscale
Energy kJ
1064
912
870
681
857
763
634
521
501
389
389
485
363
305
265
293
330
449
624
738
635
Wind (km/h)
35
ENE
30
NE
25
ENE
25
ENE
30
ENE
25
ENE
25
ENE
25
NE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
NE
20
NE
25
ENE
25
ENE
20
ENE
20
ENE
20
ENE
20
ENE
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross-on
cross
cross-on
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
High Tide
11:10AM0.24m
10:17PM0.45m
12:15PM0.33m
11:02PM0.39m
1:03PM0.41m
11:43PM0.33m
1:43PM0.49m
00:22AM0.27m
2:18PM0.55m
00:59AM0.23m
2:50PM0.59m
1:35AM0.20m
3:21PM0.62m
2:11AM0.18m
Low Tide
3:18PM0.16m
5:30AM0.02m
5:07PM0.20m
5:54AM-0.01m
6:46PM0.21m
6:17AM-0.03m
8:07PM0.19m
6:40AM-0.05m
9:11PM0.17m
7:04AM-0.06m
10:02PM0.15m
7:30AM-0.06m
10:44PM0.13m
rain showers
clear
rain showers
clear
rain showers
clear
clear
clear
rain showers
clear
clear
rain showers
rain showers
rain showers
rain showers
part cloud
clear
rain showers
rain showers
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:54
5:54
5:54
5:54
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:13
7:13
7:13
7:14
7:14
7:15
7:15
2
1
2
1
3
2
1
1
1
1
2
Temp °C
23
23
23
23
23
23
24
24
23
24
24
23
23
24
23
24
24
23
24
24
23
19
19
20
21
20
20
21
21
21
22
22
22
22
22
21
23
22
22
23
22
22
Swell 1
Height (m)
Direction
Period (s)
0.5
S
16
0.7
S
15
0.6
S
15
0.5
S
14
0.5
S
13
0.6
S
14
0.4
S
13
0.6
S
14
0.5
S
13
0.6
S
16
0.5
S
12
0.6
S
15
0.7
S
14
0.6
S
14
0.6
S
13
0.6
S
12
0.6
S
12
0.7
S
21
0.9
S
20
1
S
19
1
S
18
Energy kJ
125
213
155
93
92
140
50
129
83
176
73
150
196
129
121
105
103
449
624
738
635
Swell 2
Height (m)
Direction
Period (s)
0.4
SSW
13
0.4
NW
15
0.4
NW
13
0.4
NW
12
0.4
NW
12
0.3
NW
11
0.4
S
15
0.2
SSE
9
0.3
S
16
0.2
WNW
19
0.4
S
16
0.5
NW
15
0.6
WNW
14
0.5
NW
13
0.4
NW
12
0.4
NW
12
0.4
NW
12
0.6
S
12
0.5
S
11
0.5
NNE
11
0.6
S
13
Energy kJ
57
54
44
37
36
19
68
8
48
37
79
112
134
87
55
52
52
98
63
70
119
Swell 3
Height (m)
Direction
Period (s)
0.4
SE
12
0.3
SE
10
0.3
SE
10
0.3
S
16
0.3
S
16
0.2
SSE
11
0.2
NNW
11
0.2
NNW
11
0.2
SSE
9
0.1
SE
9
0.4
NW
18
0.2
SSE
9
0.3
SE
8
0.4
SE
9
0.4
SE
8
0.4
SE
8
0.4
S
23
0.5
N
10
0.4
NNE
10
0.5
S
11
0.5
NNE
11
Energy kJ
35
15
14
46
46
12
11
11
8
3
79
8
11
26
18
17
169
56
31
63
64
Wind waves
Height (m)
Direction
Period (s)
3
ENE
8
2.5
ENE
9
2.5
ENE
8
2.2
ENE
8
2.5
ENE
8
2.4
ENE
8
2.2
ENE
8
2
ENE
8
2.1
ENE
8
1.9
ENE
8
1.9
ENE
8
2.2
ENE
7
1.8
ENE
7
1.7
ENE
7
1.6
ENE
7
1.7
ENE
7
1.8
ENE
7
1.7
ENE
7
1.6
ENE
7
1.4
ENE
7
1.6
ENE
7
Energy kJ
1064
912
870
681
857
763
634
521
501
389
389
485
363
305
265
293
330
278
265
197
240
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
3
2
1
2
2
1
2
1
2
1
2
1
1
3
3
3
3
3
Distance (km)
31
38
16
31
38
16
33
46
16
33
16
33
16
31
16
16
31
16
31
16
16
Best forecast wave conditions in Kaua'i
Rating
(10 max)
1
1
1
3
2
3
2
2
2
2
3
3
2
3
2
2
3
3
3
3
3
Best forecast wave conditions in United States
Rating
(10 max)
3
2
3
3
2
3
2
2
3
2
3
5
3
4
4
2
4
4
3
3
4
Header Global
Rating
(10 max)
5
5
5
5
4
4
4
5
9
9
7
7
6
6
7
9
5
5
5
5
4
  • 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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