Surf Forecasts:
How big are the waves at Kahalu'u Beach Park today (17 Sep):
- Morning surf: Morning surf (17 Sep, local time) - 2.5ft (0.7m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (17 Sep, local time) - 1.5ft (0.5m), 18s period with SSW swell.
- Evening surf: Evening surf (17 Sep, local time) - 2ft (0.6m), 16s period with SW swell.
The current surf forecast for Kahalu'u Beach Park at 12AM is: 0.7m 17s primary swell from a Southwest direction and 0.4m 11s secondary swell from a Southwest direction (forecast issued at 07:00pm September 16). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | 2.5ft (0.7m) | 16s |
| Afternoon (17 Sep) | 1.5ft (0.5m) | 18s |
| Evening (17 Sep) | 2ft (0.6m) | 16s |
Table - waves today at Kahalu'u Beach Park. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 13mm), heaviest on Thu night. Warm (max 29°C on Thu morning, min 26°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Wed 16 | Thursday 17 | Friday 18 | |||||||||||||||||
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) | SW 18 | SW 18 | SSW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 18 | SW 16 | SW 16 | SW 17 | SSW 17 | SSW 17 | SSW 16 | SW 17 | SW 17 | SW 17 | SW 17 | SSW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 316 | 316 | 390 | 288 | 268 | 264 | 251 | 186 | 261 | 203 | 305 | 373 | 443 | 417 | 358 | 238 | 298 | 284 | 362 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | glassy | glassy | cross | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross | cross | glassy | cross-on | cross-on | glassy | cross-off | glassy |
High Tide | 5:51PM0.35m | 8:22AM0.62m | 9:47AM0.61m | ||||||||||||||||
Low Tide | 2:30PM0.31m | 00:13AM0.14m | 00:49AM0.18m | ||||||||||||||||
 |  | | | | | |  | |  | | | | | | | | | | |
 | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | 6:24 | — | — | — | — | — | — | — | 6:23 | — | — | — | — | — | — | — | 6:22 | — | — |
mm | — | — | — | — | — | — | — | 1 | 1 | 3 | 1 | 1 | — | 1 | — | 2 | 2 | 1 | — |
Temp °C | 28 | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 29 | 27 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 |
Feels °C | 31 | 32 | 31 | 32 | 31 | 31 | 32 | 30 | 32 | 30 | 31 | 30 | 30 | 33 | 31 | 30 | 32 | 29 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 18 | SSW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 18 | SW 16 | SW 16 | SW 17 | SSW 17 | SSW 17 | SSW 16 | SW 17 | SW 17 | SW 17 | SW 17 | SSW 16 |
| kJ | 316 | 316 | 390 | 288 | 268 | 264 | 251 | 186 | 261 | 203 | 305 | 373 | 443 | 417 | 358 | 238 | 298 | 284 | 362 |
Swell 2 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SW 11 | SSW 11 | SSW 21 | SW 11 | SSW 19 | SW 16 | S 18 | SSW 18 | SSW 18 | SSW 18 | SW 18 | SW 18 | S 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 |
| kJ | 12 | 12 | 31 | 12 | 141 | 30 | 212 | 124 | 169 | 184 | 195 | 110 | 154 | 80 | 137 | 211 | 211 | 208 | 132 |
Swell 3 Height (m) Direction Period (s) | W 8 | W 8 | WNW 10 | WSW 8 | WSW 8 | SSW 20 | SSW 19 | SW 10 | SSW 20 | WSW 8 | SW 8 | SW 10 | SSE 5 | NW 3 | SSE 6 | SSE 6 | S 4 | W 9 | SE 6 |
| kJ | 5 | 5 | 10 | 14 | 6 | 78 | 37 | 15 | 37 | 24 | 18 | 4 | 2 | 3 | 4 | 4 | 1 | 25 | 1 |
Wind waves Height (m) Direction Period (s) | WSW 7 | SSW 6 | — | — | — | — | — | NW 3 | W 8 | — | SE 4 | W 8 | NNW 3 | — | — | W 9 | NW 3 | — | SW 9 |
| kJ | 4 | 4 | — | — | — | — | — | 2 | 22 | — | 3 | 22 | 4 | — | — | 26 | 3 | — | 21 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 25 | 0 | 0 | 0 | 1 | 1 | 94 | 94 | 52 | 0 | 0 | 2 | 6 | 0 | 52 | 49 | 0 | 0 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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