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Surf Forecasts:

Ammonias surfForecast / HAW – Kaua'i / USA

information circle16 Day Weather and Surf, issued 7 am Thursday 23 Apr 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
25.0° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Ammonias this week:

The most powerful waves expected at Ammonias in the next 16 days are 1.5m 8s and forecast to arrive on Sunday (Apr 26) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 8s period and expected on Saturday (Apr 25) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Sun 26th Apr)5ft (1.5m) 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

Light rain (total 2mm), mostly falling on Sat morning. Warm (max 24°C on Thu morning, min 21°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 21mm), heaviest during Mon night. Warm (max 25°C on Sun afternoon, min 22°C on Sun night). Wind will be generally light.

Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
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)
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
0.6
E
4
0.8
ENE
4
0.4
SW
14
0.2
SSW
16
0.4
SW
13
1.7
NE
6
0.5
SW
15
0.6
SSW
16
0.6
SSW
15
0.6
SW
14
0.7
SW
14
1.4
ENE
8
1.3
ENE
8
1.2
ENE
7
1
ENE
7
1
ENE
7
1.2
ENE
7
1.4
ENE
6
1.3
ENE
7
1.2
ENE
7
1.2
ENE
6
Wave Graph
Metric surfscale
Energy kJ
11
17
50
25
44
183
112
162
144
169
211
224
173
142
114
111
140
122
141
117
119
Wind (km/h)
20
ENE
15
NE
20
NE
20
NE
20
NE
25
NE
25
ENE
25
NE
20
ENE
20
ENE
20
ENE
15
ENE
20
ENE
20
ENE
20
ENE
25
ENE
25
NE
20
ENE
20
ENE
20
ENE
15
ENE
Wind State
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross-on
cross
cross-on
cross-on
cross
cross-on
High Tide
9:41AM0.12m
10:22PM0.53m
11:24AM0.17m
11:20PM0.50m
12:28PM0.25m
00:08AM0.47m
1:16PM0.32m
00:48AM0.42m
1:56PM0.40m
1:21AM0.37m
2:32PM0.47m
1:51AM0.33m
3:05PM0.52m
2:19AM0.28m
Low Tide
1:58PM0.05m
6:19AM0.06m
3:40PM0.09m
6:42AM0.04m
5:15PM0.11m
7:02AM0.01m
6:32PM0.12m
7:21AM-0.01m
7:37PM0.12m
7:39AM-0.03m
8:33PM0.12m
7:57AM-0.05m
9:24PM0.12m
clear
clear
part cloud
clear
clear
clear
rain showers
clear
clear
clear
clear
clear
rain showers
rain showers
rain showers
rain showers
rain showers
part cloud
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
—
—
6:09
—
—
6:09
—
—
6:09
—
—
6:07
—
—
6:07
—
—
6:07
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
7:00
—
—
7:00
—
—
7:00
—
—
7:00
—
—
7:00
—
—
7:01
—
—
7:01
—
 mm
—
—
—
—
—
—
2
—
—
—
—
—
1
2
9
6
3
—
—
—
2
Temp °C
24
24
23
24
24
23
24
24
23
24
25
23
24
24
23
24
24
23
24
24
23
Feels °C
24
24
22
22
23
22
22
22
22
23
25
22
23
23
23
23
23
21
23
23
23
Swell 1
Height (m)
Direction
Period (s)
1
NNE
11
0.9
NNE
10
0.6
W
14
0.6
W
13
0.5
W
12
0.5
SW
16
0.5
SW
15
0.6
SSW
16
0.6
SSW
15
0.6
SW
14
0.7
SW
14
0.6
SSW
14
0.6
SSW
13
0.5
SW
13
1
ENE
7
1
ENE
7
0.4
SW
12
0.4
SW
12
0.4
NNW
14
0.5
NNW
14
0.6
NNW
13
Energy kJ
222
173
140
123
75
122
112
162
144
169
211
125
116
84
114
111
37
36
82
110
114
Swell 2
Height (m)
Direction
Period (s)
0.6
W
13
0.5
W
14
0.4
SW
14
0.2
SSW
13
0.4
SW
13
0.5
W
12
0.4
WNW
11
0.4
NNW
13
0.4
NNW
12
0.4
NNW
12
0.4
NNW
12
0.4
NW
11
0.4
NW
11
0.4
NE
9
0.5
SW
13
0.4
SSW
12
0.3
SE
6
0.4
NW
15
0.4
SE
6
0.4
SE
8
0.6
SSE
8
Energy kJ
114
107
50
17
44
71
39
67
57
56
53
30
29
20
83
57
6
58
13
21
42
Swell 3
Height (m)
Direction
Period (s)
0.5
W
16
0.4
W
12
0.2
NNW
12
0.2
SSW
16
0.2
SSW
16
0.2
NNW
14
0.4
NW
13
0.4
WNW
11
0.3
WNW
10
0.4
SE
7
0.4
SE
7
0.3
SE
7
0.4
SE
7
0.4
NW
10
0.4
SE
7
0.4
SE
6
0.3
NW
13
0.3
SE
7
0.4
SW
12
0.3
SSW
13
0.3
NE
9
Energy kJ
131
44
13
25
25
20
44
38
19
14
12
7
12
27
12
9
28
9
36
34
13
Wind waves
Height (m)
Direction
Period (s)
0.6
E
4
0.8
ENE
4
1.3
NE
10
1.1
NE
9
1.1
NE
9
1.7
NE
6
1.8
NE
8
1.6
NE
8
1.5
NE
8
1.5
NE
8
1.4
NE
8
1.4
ENE
8
1.3
ENE
8
1.2
ENE
7
—
—
1.2
ENE
7
1.4
ENE
6
1.3
ENE
7
1.2
ENE
7
1.2
ENE
6
Energy kJ
11
17
311
212
179
183
388
338
255
255
210
224
173
142
—
—
140
122
141
117
119
Nearest Offshore or Glassy
Infinities
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Pinetrees
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Infinities
HAW - Kaua'i
Infinities
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Infinities
HAW - Kaua'i
Infinities
HAW - Kaua'i
Acid Drops
HAW - Kaua'i
Infinities
HAW - Kaua'i
Infinities
HAW - Kaua'i
Polihale
HAW - Kaua'i
Infinities
HAW - Kaua'i
Infinities
HAW - Kaua'i
Infinities
HAW - Kaua'i
Rating
(10 max)
1
2
2
2
1
1
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
Distance (km)
31
16
16
33
16
16
16
16
16
31
31
16
31
31
16
31
31
45
31
31
31
Best forecast wave conditions in Kaua'i
Polihale
Acid Drops
Polihale
Tunnels
Acid Drops
Polihale
Polihale
Polihale
Hideaways
Majors Bay
Polihale
Tunnels
Majors Bay
Majors Bay
Polihale
Polihale
Polihale
Polihale
Polihale
Majors Bay
Tunnels
Rating
(10 max)
3
2
2
2
1
3
3
3
3
1
3
2
1
1
2
2
2
2
3
1
3
Best forecast wave conditions in United States
Boners
CAL - San Luis Obispo
Steamer Lane-Middle Peak
CAL - Santa Cruz
Ranches
HAW - Oahu
Lincoln City Nelscott Reef
Oregon North
Magics
HAW - Big Island
Lincoln City Nelscott Reef
Oregon North
Ranches
HAW - Oahu
Fossil Beach Kodiak
Alaska - Kodiak Island
Ranches
HAW - Oahu
Off the Wall/Insanities
HAW - Oahu
Cape Sebastian
Oregon South
Ghost Tree
CAL - Monterey
Mouse Rock
CAL - San Luis Obispo
Ontonagon
Lake Superior
Mouse Rock
CAL - San Luis Obispo
Cojo
CAL - Santa Barbara
Off the Wall/Insanities
HAW - Oahu
Ghost Tree
CAL - Monterey
Westport-The Corner
Washington
Ranches
HAW - Oahu
Lincoln City Nelscott Reef
Oregon North
Rating
(10 max)
3
2
2
3
2
3
3
3
3
3
3
3
2
3
2
2
2
2
4
2
4
Header Global
Lebu
Chile
Lebu
Chile
Lebu
Chile
Boneyards
South Africa
Lebu
Chile
Bali Village
Indonesia
Bali Village
Indonesia
Kaka Point
New Zealand
Papatowai
New Zealand
Cobblestones
Australia
Cow Bombie
Australia
Easter Reef
Australia
Easter Reef
Australia
Hell
South Africa
Dolphin Point
South Africa
Trial Harbour
Australia
Barbel Point
South Africa
Trial Harbour
Australia
Dunedin - Bobs Beach
New Zealand
Papatowai
New Zealand
White Rock - The Spit
New Zealand
Rating
(10 max)
5
5
5
4
5
4
4
5
5
8
6
5
5
5
5
9
5
8
9
8
8
  • 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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