Surf Forecasts:
How big are the waves at Ammonias today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 2.5ft (0.7m), 17s period with SW swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 2.5ft (0.7m), 16s period with SSW swell.
- Evening surf: Evening surf (21 Aug, local time) - 2.5ft (0.8m), 16s period with SSW swell.
The current surf forecast for Ammonias at 7PM is: 0.8m 16s primary swell from a South-southwest direction and 0.7m 7s secondary swell from a East direction (forecast issued at 01:00pm August 21). An open ocean swell of 1.0m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 2.5ft (0.7m) | 17s |
| Afternoon (21 Aug) | 2.5ft (0.7m) | 16s |
| Evening (21 Aug) | 2.5ft (0.8m) | 16s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Sun night. Warm (max 27°C on Fri afternoon, min 25°C on Sat night). Wind will be generally light. | |||||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | |||||||||||||||||||
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) | SSW 17 | SSW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 16 | SSW 16 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 255 | 237 | 258 | 322 | 322 | 322 | 326 | 261 | 261 | 223 | 255 | 285 | 317 | 355 | 346 | 381 | 346 | 310 | 285 | 247 | 232 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 12:20PM0.56m | 11:30PM0.20m | 1:07PM0.59m | 00:35AM0.22m | 1:46PM0.62m | ||||||||||||||||
Low Tide | 9:24PM0.19m | 4:39AM0.10m | 9:13PM0.18m | 5:45AM0.08m | 9:16PM0.18m | ||||||||||||||||
 | | |  | | | | | | | | | | | | | | | | |  | |
 | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — |
 | — | — | 7:02 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:01 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 27 | 26 | 25 | 25 |
Feels °C | 30 | 30 | 30 | 29 | 29 | 28 | 29 | 28 | 29 | 28 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 25 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | SW 16 | NE 7 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 16 | SSW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 |
| kJ | 53 | 47 | 258 | 99 | 322 | 322 | 326 | 261 | 261 | 223 | 251 | 215 | 215 | 212 | 207 | 201 | 196 | 193 | 188 | 186 | 186 |
Swell 2 Height (m) Direction Period (s) | ENE 7 | SSW 16 | NE 7 | SSW 16 | W 10 | W 10 | W 10 | W 10 | W 10 | W 11 | W 10 | W 10 | WNW 12 | WNW 11 | WNW 11 | S 14 | SE 9 | SE 10 | SE 11 | SE 11 | SE 11 |
| kJ | 55 | 237 | 47 | 322 | 50 | 51 | 51 | 73 | 74 | 82 | 56 | 55 | 107 | 98 | 66 | 94 | 53 | 68 | 77 | 116 | 110 |
Swell 3 Height (m) Direction Period (s) | SSW 17 | ENE 7 | ENE 7 | W 10 | SE 9 | SSE 14 | SE 8 | S 14 | S 15 | SE 8 | SE 8 | S 14 | S 14 | S 14 | S 14 | WNW 11 | SSE 14 | WNW 10 | SSE 13 | S 13 | S 13 |
| kJ | 255 | 43 | 42 | 50 | 19 | 62 | 18 | 94 | 109 | 18 | 18 | 107 | 107 | 107 | 104 | 44 | 104 | 42 | 59 | 90 | 89 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | — | — | — | 48 | 102 | 136 | 149 | 141 | 145 | 168 | 255 | 285 | 317 | 355 | 346 | 381 | 346 | 310 | 285 | 247 | 232 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 45 | 45 | 15 | 12 | 16 | 16 | 12 | 16 | 31 | 31 | 31 | 31 | 16 | 16 | 16 | 16 | 16 | 31 | 38 | 299 | 31 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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