Surf Forecasts:
How big are the waves at Ammonias today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 4.5ft (1.4m), 7s period with ENE swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 4.5ft (1.3m), 7s period with ENE swell.
- Evening surf: Evening surf (18 Aug, local time) - 4.5ft (1.4m), 6s period with ENE swell.
The current surf forecast for Ammonias at 1PM is: 0.7m 13s primary swell from a South direction and 0.6m 10s secondary swell from a South-southeast direction, 1.3m 7s secondary swell from a East-northeast direction (forecast issued at 07:00am August 18). The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 4.5ft (1.4m) | 7s |
| Afternoon (18 Aug) | 4.5ft (1.3m) | 7s |
| Evening (18 Aug) | 4.5ft (1.4m) | 6s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 26°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | |||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||||||||
5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | SW 16 | SW 16 | SW 17 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 219 | 168 | 165 | 165 | 165 | 144 | 126 | 141 | 128 | 114 | 129 | 110 | 103 | 103 | 129 | 130 | 148 | 207 | 207 | 207 | 195 | 179 | 234 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off |
High Tide | 8:46AM0.48m | 5:31PM0.30m | 10:06AM0.50m | 11:20AM0.53m | |||||||||||||||||||
Low Tide | 3:13PM0.30m | 1:28AM0.08m | 2:14AM0.09m | ||||||||||||||||||||
 |  | |  | | |  | | | | | | | | | | | | | | | | | |
 | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — |
 | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:04 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 26 | 26 | 26 | 24 | 24 | 24 | 24 | 24 | 25 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 26 | 26 | 26 | 25 | 25 |
Feels °C | 24 | 25 | 27 | 26 | 26 | 24 | 24 | 24 | 25 | 24 | 25 | 26 | 27 | 26 | 25 | 25 | 25 | 25 | 27 | 27 | 28 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | S 12 | SW 16 | SW 16 | E 8 | E 8 | E 8 | E 8 | E 7 | ENE 7 | ENE 7 |
| kJ | 219 | 165 | 165 | 165 | 165 | 119 | 119 | 112 | 72 | 63 | 59 | 58 | 33 | 71 | 129 | 130 | 80 | 80 | 61 | 55 | 51 | 108 | 131 |
Swell 2 Height (m) Direction Period (s) | SSE 5 | SW 6 | SSE 10 | SE 10 | SE 10 | SE 8 | SE 8 | SSE 10 | SSE 10 | S 12 | S 12 | S 12 | S 12 | SSE 9 | S 12 | S 12 | SW 17 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 |
| kJ | 9 | 13 | 64 | 48 | 47 | 35 | 32 | 63 | 38 | 69 | 69 | 69 | 69 | 32 | 45 | 44 | 148 | 207 | 207 | 207 | 195 | 179 | 234 |
Swell 3 Height (m) Direction Period (s) | SW 6 | SE 11 | SW 6 | SW 18 | SW 18 | SW 18 | WNW 12 | WNW 12 | SE 6 | SSW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | SSE 9 | SE 9 | SSE 9 | SSE 9 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SE 9 |
| kJ | 13 | 40 | 14 | 79 | 80 | 80 | 28 | 28 | 8 | 102 | 129 | 65 | 103 | 103 | 34 | 22 | 33 | 35 | 36 | 36 | 35 | 34 | 21 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 7 | NE 6 | NE 6 | NE 6 | — | — |
| kJ | 198 | 168 | 163 | 141 | 137 | 144 | 126 | 141 | 128 | 114 | 124 | 110 | 100 | 93 | 103 | 100 | 45 | 52 | 47 | 40 | 42 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 33 | 33 | 31 | 38 | 16 | 16 | 16 | 31 | 16 | 16 | 31 | 31 | 16 | 16 | 16 | 16 | 16 | 16 | 31 | 31 | 12 | 1 | 0 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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