Ammonias Surf Break

Lat Long: 21.95° N 159.35° W

Issued: 7 am 30 Jun 2026 (local time)

Forecast update in  hr  min

Today's Ammonias sea temperature is
25.9° C

Normal for this time of year

Ammonias surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Ammonias surf forecast from 30 Jun 2026:

  • Most powerful swell: Tuesday 7 Jul, 5AM (local time) - 8ft (2.4m), 8s period, ENE swell with 715 kJ wave energy.

Best Forecast Surf Conditions for Ammonias this week:

The most powerful waves expected at Ammonias in the next 16 days are 2.4m 8s and forecast to arrive on Tuesday (Jul 07) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Friday (Jul 03) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Tue 7th Jul)8ft (2.4m) 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 8mm), mostly falling on Tue night. Warm (max 26°C on Tue afternoon, min 23°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 15mm), heaviest on Fri morning. Warm (max 25°C on Fri morning, min 23°C on Fri night). Wind will be generally light.

Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
Monday
6
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
1
0
1
1
1
0
0
1
2
1
2
1
0
1
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)
1.4
ENE
8
1.3
ENE
7
1.5
ENE
8
2.1
ENE
8
1.9
ENE
8
1.9
ENE
8
1.7
ENE
8
1.7
ENE
8
1.6
ENE
8
1.7
ENE
8
0.6
SSW
17
1.9
ENE
8
0.8
S
21
0.8
S
20
0.9
SSW
19
2.1
ENE
8
0.9
SSW
18
2.1
ENE
8
2.1
ENE
8
2
ENE
8
2.1
ENE
8
Wave Graph
Metric surfscale
Energy kJ
226
193
256
547
454
443
345
327
277
336
216
410
573
490
608
522
540
508
487
481
514
Wind (km/h)
25
NE
25
NE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
NE
20
NE
25
ENE
25
ENE
20
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
30
ENE
25
ENE
Wind State
cross
cross
cross-on
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
4:46PM0.66m
3:53AM0.20m
5:18PM0.65m
4:37AM0.20m
5:48PM0.62m
5:30AM0.21m
6:17PM0.59m
6:37AM0.22m
6:44PM0.55m
8:00AM0.26m
7:11PM0.49m
9:31AM0.32m
7:37PM0.42m
Low Tide
8:56AM-0.04m
00:05AM0.13m
9:33AM-0.02m
00:33AM0.12m
10:09AM0.00m
1:03AM0.11m
10:47AM0.04m
1:33AM0.09m
11:30AM0.10m
2:02AM0.07m
12:26PM0.17m
2:33AM0.05m
1:48PM0.24m
3:07AM0.02m
part cloud
part cloud
thunderstorm
thunderstorm
rain showers
rain showers
clear
clear
part cloud
rain showers
rain showers
rain showers
rain showers
clear
rain showers
part cloud
rain showers
rain showers
rain showers
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:56
5:58
5:58
5:58
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:23
7:23
7:23
7:23
7:23
7:23
7:23
 mm
2
2
2
2
1
2
4
1
2
1
4
1
1
4
Temp °C
25
26
25
25
26
24
25
25
24
25
25
24
25
25
24
25
25
24
25
25
24
Feels °C
25
26
26
25
26
24
24
24
23
24
24
23
24
24
23
23
24
23
23
23
22
Swell 1
Height (m)
Direction
Period (s)
0.6
SSW
14
0.6
SSW
13
0.7
SSW
13
0.7
SSW
14
0.7
SSW
14
0.6
SSW
13
0.6
SSW
14
0.6
SSW
13
0.6
SSW
13
0.6
SSW
17
0.6
SSW
17
0.5
SSW
16
0.8
S
21
0.8
S
20
0.9
SSW
19
0.9
SSW
18
0.9
SSW
18
0.9
SSW
16
0.9
SSW
16
1
SSW
15
0.9
SSW
15
Energy kJ
143
141
184
178
180
141
133
120
118
232
216
147
573
490
608
522
540
432
446
481
355
Swell 2
Height (m)
Direction
Period (s)
0.6
SSE
10
0.6
SSE
10
0.6
SSE
10
0.5
SE
10
0.5
SE
10
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
S
18
0.4
SSW
13
0.5
SE
9
0.5
SSW
13
0.7
SSW
16
0.6
SSW
15
0.7
SSW
15
0.6
SSW
14
0.3
SE
9
0.4
SSW
13
0.4
SE
9
0.4
SE
9
0.4
SE
8
Energy kJ
60
63
64
46
45
41
41
40
163
67
36
93
217
148
188
138
13
68
20
20
18
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
14
0.3
SW
15
0.2
W
15
0.2
W
14
0.2
WNW
14
0.3
SSW
21
0.4
SSW
20
0.4
SSW
19
0.5
SE
9
0.5
SE
9
0.4
SSW
12
0.5
S
23
0.5
SE
10
0.4
SE
10
0.4
SE
7
0.3
SE
9
0.2
SSW
11
0.4
SSE
9
0.2
S
20
0.1
S
11
0.3
S
18
Energy kJ
53
35
17
15
18
83
127
118
39
38
61
260
45
24
11
12
12
33
30
2
57
Wind waves
Height (m)
Direction
Period (s)
1.4
ENE
8
1.3
ENE
7
1.5
ENE
8
2.1
ENE
8
1.9
ENE
8
1.9
ENE
8
1.7
ENE
8
1.7
ENE
8
1.6
ENE
8
1.7
ENE
8
1.7
ENE
8
1.9
ENE
8
1.6
ENE
8
1.7
ENE
8
2
ENE
8
2.1
ENE
8
1.9
ENE
8
2.1
ENE
8
2.1
ENE
8
2
ENE
8
2.1
ENE
8
Energy kJ
226
193
256
547
454
443
345
327
277
336
322
410
318
348
452
487
400
508
487
447
514
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
2
2
2
2
2
2
2
2
2
3
3
3
3
3
2
2
2
2
Distance (km)
16
16
16
31
16
16
16
16
16
31
16
16
31
16
16
33
31
16
31
31
31
Best forecast wave conditions in Kaua'i
Rating
(10 max)
2
2
1
2
3
2
2
2
2
2
2
2
3
3
3
3
3
3
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
2
2
3
4
3
3
2
2
2
2
2
3
3
3
3
3
3
3
2
2
4
Header Global
Rating
(10 max)
5
5
5
9
7
5
7
5
6
6
4
5
6
9
7
9
7
5
6
7
9
  • 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
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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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