Ammonias Surf Break

Lat Long: 21.95° N 159.35° W

Issued: 1 am 07 Jul 2026 (local time)

Forecast update in  hr  min

Today's Ammonias sea temperature is
26.3° 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 7 Jul 2026:

  • Most powerful swell: Tuesday 7 Jul, 5AM (local time) - 8ft (2.5m), 8s period, ENE swell with 711 kJ wave energy.

Best Forecast Surf Conditions for Ammonias this week:

The most powerful waves expected at Ammonias in the next 16 days are 2.5m 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 0.6m 17s period and expected on Tuesday (Jul 14) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Tue 7th Jul)8ft (2.5m) 8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 18mm), heaviest on Tue morning. Warm (max 25°C on Tue morning, min 24°C on Tue morning). Mainly fresh winds.

Days 4-6 Weather Summary

Heavy rain (total 25mm), heaviest during Sun night. Warm (max 26°C on Fri afternoon, min 24°C on Fri night). Mainly fresh winds.

Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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)
2.3
ENE
8
2.1
ENE
8
2.2
ENE
7
2
ENE
8
1.9
ENE
8
2
ENE
8
2.1
ENE
8
2
ENE
8
2
ENE
7
2.2
ENE
8
2.1
ENE
8
2.2
ENE
7
2.2
ENE
7
2
ENE
7
2
ENE
7
2
ENE
7
2.1
ENE
8
2.2
ENE
8
2
ENE
8
1.7
ENE
8
1.7
ENE
7
Wave Graph
Metric surfscale
Energy kJ
662
533
498
464
411
438
495
452
440
512
469
498
516
435
423
435
487
512
450
345
294
Wind (km/h)
30
NE
25
ENE
25
ENE
25
ENE
30
ENE
25
ENE
30
ENE
25
ENE
25
ENE
25
ENE
30
ENE
30
ENE
30
NE
30
NE
25
NE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
20
ENE
Wind State
cross
cross
cross
cross-on
cross-on
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
High Tide
10:50AM0.41m
8:03PM0.35m
11:53AM0.50m
8:28PM0.28m
12:45PM0.59m
9:34PM0.22m
1:33PM0.67m
11:46PM0.18m
2:19PM0.73m
1:06AM0.18m
3:04PM0.77m
2:08AM0.19m
3:47PM0.78m
3:04AM0.21m
Low Tide
3:53PM0.29m
3:45AM-0.01m
6:49PM0.27m
4:28AM-0.03m
9:16PM0.22m
5:17AM-0.06m
9:34PM0.17m
6:09AM-0.08m
10:03PM0.14m
7:03AM-0.10m
10:34PM0.12m
7:55AM-0.11m
11:06PM0.11m
rain showers
part cloud
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
part cloud
part cloud
rain showers
rain showers
rain showers
rain showers
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
6:00
6:00
6:00
6:01
6:01
6:01
<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
1
2
2
2
3
2
2
4
3
2
7
1
2
2
8
1
Temp °C
25
25
24
25
25
24
25
25
24
25
26
25
25
26
24
25
25
25
25
25
24
Feels °C
22
22
22
24
24
22
23
23
23
25
25
24
23
25
23
24
24
24
24
24
23
Swell 1
Height (m)
Direction
Period (s)
0.9
SSW
14
0.9
SSW
14
0.8
SSW
14
0.8
SSW
14
0.8
SSW
13
0.7
S
13
0.6
S
12
0.6
S
12
0.6
S
12
0.6
S
12
0.5
S
11
0.5
SW
19
0.6
SSW
18
0.7
SW
18
0.7
SW
17
0.8
SSW
16
0.8
SSW
16
0.9
SW
16
0.8
SSW
15
0.8
SSW
14
0.7
SW
14
Energy kJ
350
341
261
247
239
168
112
110
106
98
66
184
214
316
309
326
322
353
283
268
206
Swell 2
Height (m)
Direction
Period (s)
0.4
SE
9
0.4
SE
8
0.3
SE
10
0.3
SE
9
0.4
SE
9
0.4
SE
8
0.3
SE
8
0.3
SE
8
0.3
W
13
0.4
W
14
0.4
W
13
0.4
S
11
0.4
S
11
0.4
SE
8
0.4
SE
8
0.4
SSE
12
0.4
SE
8
0.4
SSE
12
0.4
W
16
0.5
W
17
0.5
W
17
Energy kJ
20
18
15
12
19
17
11
11
30
65
55
39
38
25
24
48
25
47
81
138
145
Swell 3
Height (m)
Direction
Period (s)
0.1
N
9
0.1
S
10
0.1
SE
10
0.1
W
16
0.1
S
18
0.2
W
15
0.2
W
14
0.3
W
14
0.2
S
15
0.2
SSE
8
0.4
SW
20
0.4
W
14
0.4
W
14
0.4
S
12
0.4
S
13
0.4
SE
8
0.4
SSE
12
0.3
SE
8
0.4
SSE
12
0.4
SSE
12
0.4
SE
7
Energy kJ
2
2
4
5
6
17
15
32
17
6
102
59
61
44
51
18
48
10
47
44
15
Wind waves
Height (m)
Direction
Period (s)
2.3
ENE
8
2.1
ENE
8
2.2
ENE
7
2
ENE
8
1.9
ENE
8
2
ENE
8
2.1
ENE
8
2
ENE
8
2
ENE
7
2.2
ENE
8
2.1
ENE
8
2.2
ENE
7
2.2
ENE
7
2
ENE
7
2
ENE
7
2
ENE
7
2.1
ENE
8
2.2
ENE
8
2
ENE
8
1.7
ENE
8
1.7
ENE
7
Energy kJ
662
533
498
464
411
438
495
452
440
512
469
498
516
435
423
435
487
512
450
345
294
Nearest Offshore or Glassy
Rating
(10 max)
2
3
3
3
3
2
3
2
2
3
2
2
2
2
3
3
3
3
2
2
3
Distance (km)
31
33
33
38
31
33
16
33
31
16
31
33
38
33
31
31
31
31
16
16
31
Best forecast wave conditions in Kaua'i
Rating
(10 max)
2
3
3
3
3
2
3
2
2
3
2
2
2
2
3
3
3
3
3
3
3
Best forecast wave conditions in United States
Rating
(10 max)
4
3
3
4
3
2
4
3
2
4
2
2
3
2
3
3
3
3
3
3
3
Header Global
Rating
(10 max)
5
5
9
8
7
7
7
6
6
6
5
5
5
5
5
6
8
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
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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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