
Surf Forecasts:
Kawaihae Breakwater surf forecast from 3 Aug 2026:
- Most powerful swell: Sunday 9 Aug, 8PM (local time) - 1.5ft (0.4m), 12s period, W swell with 43 kJ wave energy.
Best Forecast Surf Conditions for Kawaihae Breakwater this week:
The most powerful waves expected at Kawaihae Breakwater in the next 16 days are 0.4m 12s and forecast to arrive on Sunday (Aug 09) at 8PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Saturday (Aug 08) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sun 9th Aug) | 1.5ft (0.4m) 12s |
Table - best surf conditions forecast for Kawaihae Breakwater over the next 16 days.
The Lowdown
G’day, Rusty here. Flat spell? You bet. But hang tight, because there’s a pulse showing up later in the window that’s worth keeping an eye on.
Right now, and for the first week or so, Kawaihae Breakwater is pretty much dead. We’re talking ankle-biters, nothing surfer. The swell energy is weak, reading single digits up to the low 50s in that combined energy. There’s a bit of west-northwest groundswell trying to push in, but it’s got no power behind it. The wind is light and mostly offshore or glassy through the start of the week, which is nice, but a clean ankle-snapper is still an ankle-snapper. We’ll see some small west swell around 0.7ft to 1ft, with periods around 11 to 13 seconds. There is a little more energy pushing through around the 10th and 11th, but the waves are still tiny and pretty unremarkable. This stretch is a dead loss for a surf.
Now, things start to get interesting around the 13th. That’s when the swell actually starts to build. We’re still not talking big, but the energy jumps up. On the morning of the 13th, we’ve got 2ft of west swell, but the period is a solid 16 seconds. That’s proper groundswell. The combined energy jumps to 188 – moderate – and it’s glassy with a slight air. That afternoon, it bumps up to 2ft with 16 seconds of period and energy at 339, and the wind is offshore and clean. This is when it starts to feel real.
The standout of this whole run looks like the 15th of August, Saturday. We’ve got 3ft to 3ft of west-northwest swell, with periods still up at 15 to 16 seconds. The combined energy is pushing into the mid-300s to over 400 – that’s the strongest we see in this whole forecast. The wind is light, offshore in the morning, and just cross-off in the afternoon. It won’t be huge, but it’ll have some push and shape to it on this reef. This is the one to circle.
The morning of the 16th, Sunday, also has some merit – 3ft of west-northwest swell with 14 seconds, energy at 273, and glassy conditions. It’s a good follow-up but not quite as strong as the day before.
After that, things start to taper back down. The 17th and 18th drop back to around 2ft with the period easing to 14 and then 13 seconds, and the energy settles back into the low 200s. Still surfable, but the magic is gone.
So the call is: a whole heap of nothing for the first week, then a genuine, if modest, pulse of long-period west-northwest groundswell arrives mid-month. The best bet is the 15th, with the 13th afternoon and 16th morning as solid backups. It won’t be a classic, but it’ll be the best we’ve got. Water temp is 81° – that’s about normal for this time of year, so just boardies and a thin top.
This is Rusty, signing off. See you in the water when it shows.
Short Range ForecastMostly dry. Warm (max 28°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Fri afternoon, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | W 11 | W 12 | W 12 | ENE 11 | W 11 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | SSW 14 | W 12 | SSW 13 | NE 6 | SSW 18 | SSW 18 | SSW 18 | W 12 | W 12 | W 11 |
Wave Graph | |||||||||||||||||||||
10 | 10 | 11 | 0 | 10 | 12 | 28 | 11 | 11 | 11 | 12 | 20 | 11 | 18 | 0 | 32 | 31 | 30 | 27 | 25 | 39 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | glassy | glassy | glassy | glassy | glassy | glassy | cross-off | glassy | off | off | off | off | cross-off | off | off | off | off | off | cross-off |
High Tide | 6:56PM0.51m | 8:43AM0.52m | 7:30PM0.41m | 9:54AM0.57m | 8:12PM0.32m | 11:08AM0.63m | 9:29PM0.23m | 12:16PM0.69m | 11:28PM0.19m | 1:16PM0.76m | 1:00AM0.19m | 2:08PM0.80m | 2:05AM0.23m | ||||||||
Low Tide | 1:09PM0.20m | 1:44AM-0.00m | 2:34PM0.25m | 2:20AM-0.00m | 4:37PM0.27m | 3:05AM-0.01m | 6:57PM0.22m | 4:04AM-0.01m | 8:13PM0.15m | 5:14AM-0.02m | 8:57PM0.09m | 6:24AM-0.04m | 9:32PM0.05m | ||||||||
5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 6:59 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 |
Temp °C | 28 | 28 | 26 | 27 | 28 | 26 | 28 | 28 | 26 | 27 | 27 | 26 | 27 | 28 | 26 | 28 | 27 | 26 | 27 | 28 | 26 |
Feels °C | 30 | 31 | 29 | 30 | 31 | 29 | 31 | 32 | 29 | 30 | 31 | 29 | 29 | 30 | 27 | 29 | 28 | 27 | 30 | 32 | 29 |
Swell 1 Height (m) Direction Period (s) | N 6 | NNE 6 | N 6 | ENE 11 | NNE 6 | ENE 10 | NE 9 | NNE 5 | NE 5 | NE 5 | NE 6 | NE 5 | NE 4 | NE 6 | NE 6 | NE 7 | NE 10 | NE 7 | NE 7 | NE 7 | NE 7 |
20 | 20 | 19 | 47 | 12 | 39 | 22 | 14 | 11 | 12 | 24 | 10 | 9 | 47 | 31 | 36 | 14 | 65 | 99 | 93 | 63 | |
Swell 2 Height (m) Direction Period (s) | NE 8 | NE 8 | ENE 11 | NNE 5 | ENE 11 | NNE 6 | NNE 5 | NE 9 | NE 8 | NE 8 | NE 8 | NE 7 | NE 7 | W 12 | ENE 8 | NE 9 | SSW 18 | SSW 18 | W 12 | W 12 | W 11 |
30 | 17 | 48 | 10 | 46 | 10 | 9 | 20 | 18 | 10 | 9 | 9 | 8 | 11 | 6 | 12 | 31 | 30 | 27 | 25 | 39 | |
Swell 3 Height (m) Direction Period (s) | W 11 | W 12 | W 12 | NE 6 | W 11 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | SSW 14 | W 12 | SSW 13 | NE 11 | SSW 18 | SSW 13 | NE 9 | SSW 16 | SSW 12 | SSW 12 |
10 | 10 | 11 | 6 | 10 | 12 | 28 | 11 | 11 | 11 | 12 | 20 | 11 | 18 | 18 | 32 | 17 | 14 | 26 | 15 | 14 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 6 | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 49 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 86 | 88 | 23 | 23 | 65 | 46 | 88 | 88 | 85 | 88 | 88 | 46 | 86 | 66 | 46 | 88 | 46 | 54 | 47 | 49 | 46 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Kawaihae Breakwater Surf forecast
The above surf forecast table for Kawaihae Breakwater provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kawaihae Breakwater can be found by selecting the local surf guide option on the grey menu. Our Kawaihae Breakwater 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 (Kawaihae Breakwater) 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 Kawaihae Breakwater 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.
Kawaihae Breakwater is 87 km (54 miles) from Hilo. If you plan a vacation in Big Island, look for hotels and other accommodation in Hilo. Hilo has rooms for a wide range of budgets as well as car hire and transport links.











