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Surf Forecasts:

Ammonias surfForecast / HAW – Kaua'i / USA

information circle16 Day Weather and Surf, issued 7 pm Friday 08 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
24.5° 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 2.5m 8s and forecast to arrive on Thursday (May 14) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Saturday (May 09) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5PM (Thu 14th May)8ft (2.5m) 8s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast

Moderate rain (total 15mm), heaviest on Fri night. Warm (max 24°C on Sat afternoon, min 22°C on Fri night). Mainly fresh winds.

Days 5-7 Weather Summary

Heavy rain (total 28mm), heaviest during Tue night. Warm (max 24°C on Tue morning, min 22°C on Mon night). Mainly fresh winds.

Saturday
9
Sunday
10
Monday
11
Tuesday
12
Wednesday
13
Thursday
14
Fri
15
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
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
16
0.3
S
16
0.4
SSW
15
0.3
SSW
14
0.4
SSW
13
1.2
NE
6
1.3
ENE
6
0.4
SSW
18
1.3
ENE
6
0.4
SSW
17
1.6
ENE
6
1.5
ENE
6
1.9
E
7
2
ENE
7
1.9
ENE
7
2.2
ENE
8
2.3
ENE
8
2.5
ENE
8
2.4
ENE
8
2.1
ENE
8
1.8
ENE
8
Wave Graph
Metric surfscale
Energy kJ
131
44
71
41
57
102
93
106
124
99
218
167
345
350
356
532
649
840
733
494
373
Wind (km/h)
20
NE
25
NE
30
NE
20
NE
20
ENE
25
NE
20
ENE
20
ENE
25
NE
25
NE
25
ENE
25
ENE
25
ENE
30
ENE
30
NE
25
ENE
30
ENE
30
NE
30
NE
25
ENE
30
ENE
Wind State
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
9:30PM0.48m
10:59AM0.17m
10:21PM0.45m
12:00PM0.24m
11:06PM0.43m
12:43PM0.32m
11:47PM0.39m
1:23PM0.42m
00:26AM0.35m
2:02PM0.52m
1:06AM0.30m
2:42PM0.60m
1:46AM0.25m
3:24PM0.67m
Low Tide
5:33AM0.09m
2:35PM0.13m
5:47AM0.06m
4:15PM0.16m
6:05AM0.02m
5:45PM0.16m
6:26AM-0.02m
7:03PM0.15m
6:51AM-0.06m
8:12PM0.13m
7:19AM-0.10m
9:17PM0.11m
7:51AM-0.13m
rain showers
rain showers
rain showers
rain showers
rain showers
clear
clear
clear
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
6:01
—
—
6:00
—
—
6:00
—
—
5:58
—
—
5:58
—
—
5:58
—
—
5:58
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
—
7:06
—
—
7:07
—
—
7:07
—
—
7:07
—
—
7:07
—
—
7:07
—
—
7:08
 mm
6
2
1
3
2
—
—
—
1
2
1
2
6
2
2
5
4
4
8
3
3
Temp °C
23
23
24
23
24
24
23
24
24
23
24
24
23
23
24
23
23
23
23
23
24
Feels °C
23
22
22
22
24
23
22
23
23
21
22
22
21
20
22
21
21
21
21
21
22
Swell 1
Height (m)
Direction
Period (s)
0.5
S
16
0.4
NW
11
0.4
SSW
15
0.4
NNW
11
0.4
NNW
10
0.4
NNW
10
0.4
NNW
12
0.7
N
7
0.4
SE
8
0.6
SE
9
0.5
S
16
0.6
SE
8
0.4
SSW
14
0.5
S
14
0.4
SE
8
0.4
SSW
14
0.6
SE
9
0.6
SE
9
0.6
NNW
14
0.5
SE
9
0.4
SE
9
Energy kJ
131
41
71
49
40
39
53
43
24
47
127
41
70
103
25
80
54
52
121
41
30
Swell 2
Height (m)
Direction
Period (s)
0.4
NW
11
0.4
SE
10
0.4
NW
11
0.4
SE
9
0.4
SE
8
0.5
SE
8
0.4
SE
9
0.6
SE
7
0.4
SSW
18
0.4
SSW
17
0.4
NNW
10
0.5
S
16
0.4
SSE
15
0.4
SE
9
0.4
SSW
14
0.4
SE
9
0.4
NW
15
0.5
NW
14
0.4
SE
10
0.5
NW
12
0.5
SW
16
Energy kJ
43
23
30
21
24
31
26
39
102
99
35
131
74
28
81
20
55
95
33
75
124
Swell 3
Height (m)
Direction
Period (s)
0.4
SE
10
0.3
S
16
0.4
SE
9
0.3
SSW
14
0.4
SSW
13
0.3
SSW
13
0.3
SSW
11
0.4
SSW
18
0.3
NW
11
0.3
S
12
0.3
S
16
0.4
NNW
10
0.4
NW
9
0.2
SSW
15
0.3
N
8
0.4
SE
10
0.3
N
9
0.4
SW
14
0.4
SSW
16
0.4
SSW
16
0.5
NW
12
Energy kJ
35
44
22
41
57
34
24
106
18
26
48
38
23
21
12
28
14
46
104
100
71
Wind waves
Height (m)
Direction
Period (s)
1.1
NE
5
1.6
NE
6
1.8
NE
6
1.5
NE
7
1.2
NE
6
1.2
NE
6
1.3
ENE
6
1.2
ENE
6
1.3
ENE
6
1.6
NE
6
1.6
ENE
6
1.5
ENE
6
1.9
E
7
2
ENE
7
1.9
ENE
7
2.2
ENE
8
2.3
ENE
8
2.5
ENE
8
2.4
ENE
8
2.1
ENE
8
1.8
ENE
8
Energy kJ
68
196
244
189
109
102
93
91
124
184
218
167
345
350
356
532
649
840
733
494
373
Nearest Offshore or Glassy
Acid Drops
HAW - Kaua'i
Infinities
HAW - Kaua'i
Infinities
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Infinities
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Infinities
HAW - Kaua'i
Polihale
HAW - Kaua'i
Yokohama Bay
HAW - Oahu
Infinities
HAW - Kaua'i
Infinities
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Davidson Point
HAW - Kaua'i
Davidson Point
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Yokohama Bay
HAW - Oahu
Infinities
HAW - Kaua'i
Infinities
HAW - Kaua'i
Infinities
HAW - Kaua'i
Waimea Rivermouth
HAW - Kaua'i
Rating
(10 max)
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
1
2
1
2
2
2
Distance (km)
16
31
31
16
31
16
16
31
45
122
31
31
16
38
38
16
122
31
31
31
33
Best forecast wave conditions in Kaua'i
Polihale
Majors Bay
Polihale
Polihale
Hideaways
Majors Bay
Hanalei Bay
Polihale
Polihale
Majors Bay
Majors Bay
Majors Bay
Majors Bay
Majors Bay
Majors Bay
Majors Bay
Majors Bay
Majors Bay
Majors Bay
Rating
(10 max)
2
1
2
2
2
1
2
2
2
2
2
2
2
2
2
1
2
2
2
Best forecast wave conditions in United States
Boners
CAL - San Luis Obispo
Steamer Lane-Middle Peak
CAL - Santa Cruz
Super Tubes
CAL - Ventura
Boners
CAL - San Luis Obispo
Ranches
HAW - Oahu
Super Tubes
CAL - Ventura
Mouse Rock
CAL - San Luis Obispo
Boners
CAL - San Luis Obispo
Lighthouse
CAL - San Luis Obispo
Mouse Rock
CAL - San Luis Obispo
Ranches
HAW - Oahu
Santa Rosa Creek
CAL - San Luis Obispo
Cortez Bank
CAL - San Diego County
Cortez Bank
CAL - San Diego County
Rincon - Rivermouth
CAL - Ventura
Mouse Rock
CAL - San Luis Obispo
Ranches
HAW - Oahu
Ranches
HAW - Oahu
Mouse Rock
CAL - San Luis Obispo
Ranches
HAW - Oahu
Ranches
HAW - Oahu
Rating
(10 max)
4
2
2
4
2
2
3
3
3
3
2
3
3
3
2
3
3
3
3
3
3
Header Global
Boneyards
South Africa
Hanga Poukura
Chile
Barrancon
Chile
Ahijedero
Mexico
Fox River
New Zealand
Mangamaunu
New Zealand
Amanzimtoti
South Africa
Airport Rights
New Zealand
Outer Pool
South Africa
Outer Pool
South Africa
Dunedin - Bobs Beach
New Zealand
Papatowai
New Zealand
Papatowai
New Zealand
Otago Peninsula - Papanui Beach
New Zealand
Boneyards
South Africa
Boneyards
South Africa
Haga-Haga
South Africa
Boneyards
South Africa
Barbel Point
South Africa
Brak River
South Africa
Lebu
Chile
Rating
(10 max)
5
5
4
4
5
6
5
4
9
9
9
9
9
8
9
5
6
6
5
5
6
  • 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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View detailed surf forecast for Ammonias at:
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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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