Surf Forecasts:
Kawaihae Breakwater surf forecast from 13 Aug 2026:
- Best quality surf: Sunday 16 Aug, 5PM (local time) - 1.5ft (0.4m), 12s period, WNW swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 11PM (local time) - 1.5ft (0.4m), 13s period, WNW swell with 57 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 5PM (local time) - 1.5ft (0.4m), 12s period with WNW swell.
Best Forecast Surf Conditions for Kawaihae Breakwater this week:
The surf forecast for Kawaihae Breakwater over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 16) at 5PM. The primary swell is predicted to be 0.4m and 12s period with a secondary swell of 0.4m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kawaihae Breakwater in the next 16 days are 0.4m 13s and forecast to arrive on Tuesday (Aug 18) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 8s period and expected on Saturday (Aug 15) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sun 16th Aug) | 1.5ft (0.4m) 12s |
| Best Surf | 5PM (Sun 16th Aug) | 1.5ft (0.4m) 12s |
| Most Powerful | 11PM (Tue 18th Aug) | 1.5ft (0.4m) 13s |
Table - best surf conditions forecast for Kawaihae Breakwater over the next 16 days.
The Lowdown
Right on, grab a seat. Rusty here, and we’re looking at a pretty flat run for the next couple of weeks around the Kawaihae area. Honestly, it’s one of those stretches where you might be better off checking the reef at low tide for a crab or just chilling with a cold one. The swell just isn’t showing up to the party.
Let’s break it down from the start. The outlook kicks off on Thursday the 13th of August, and straight away we’re seeing tiny, weak WNW swell around 1.0 ft. The energy in the water is nothing special, sitting at 28 (weak). Winds are blowing offshore from the NE at 16 mph, so the surface might look clean, but the waves are just too small to get excited about. It’s a “poor” call from top to bottom, and that carries right through the whole first week.
Friday the 14th is even smaller, with the swell dropping to 0.7 ft on Friday morning, and by the afternoon it’s a ghostly 0.3 ft with a super long period (17 seconds), which tells you it’s just leftover energy with no push. Saturday the 15th is flat. The swell disappears completely for a moment there.
We do see a little bump on Sunday the 16th afternoon with 1 ft from the WNW and glassy conditions, but the energy is still only 49 (weak). The waves are there, but they’re weak and unshapely. That pattern of tiny, low-energy swell continues right through until the morning of Wednesday the 19th.
Now, Wednesday the 19th is where things get a very slight nudge. Both the morning and afternoon show 1 ft from the WNW with a period of 12 seconds. The combined energy creeps up to 73 (still weak), but it’s described as “surfable waves but very ordinary conditions.” The wind goes glassy – NNE at 3 mph – so it’ll be clean, but “ordinary” is the key word. This is the best we get in the first week, but I wouldn’t call it a standout.
The following week is more of the same. Thursday the 20th through to the end of the period keeps pumping out tiny swell, mostly 0.7 ft to 1 ft, with energy values that mostly stay under 100. The winds are often offshore or glassy, especially on Thursday the 21st morning with a 1 ft SW swell and glassy conditions (energy 91, still weak). The water temperature is about average for this time of year, nothing unusual there.
If you’re desperate, the best on offer in the entire 16 days is probably the window around Wednesday the 19th and Thursday the 21st, where you get a clean surface and a little bit of energy. But let’s be real – the swell is tiny, and the quality is nothing to write home about. For beginners, it’s fine, because it’s never over 5 ft, but for anyone with a shred of ambition, you’re better off waiting.
Crowds at Kawaihae Breakwater can happen sometimes, but with this lack of wave energy, you’ll likely have the place to yourself. It’s a reef setup, and with such long-period swell (over 15 seconds on some days), the waves will tend to jack up and be more suited to reef breaks like this one, but they just won’t have any power.
The long-range calls are for the last few days – the 25th to the 28th – and they’re even more unremarkable. The energy is pathetic, the swell is tiny, and the period is short (around 10 seconds) on most of those days. There’s one tiny glimmer on the 28th morning with 1.0 ft from the WNW and a period of 16 seconds, giving 82 energy, and clean offshore wind. That’s about as good as it gets, but it’s still a long way off and not worth holding your breath for.
Overall, this is a lean period. It’s a normal thing for the area when the trade winds are light and the swell windows are shut. Don’t panic – forecasts can change, and it won’t stay this quiet forever.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Sat night. Warm (max 29°C on Sat morning, min 25°C on Thu night). Winds increasing (light winds from the NE on Thu morning, gales from the ENE by Sat night). | Days 4-6 Weather SummaryHeavy rain (total 37mm), heaviest during Sun morning. Warm (max 29°C on Sun afternoon, min 25°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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) | WNW 12 | W 12 | W 12 | NNE 6 | W 12 | W 12 | W 11 | NE 8 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | W 13 | WNW 13 | WNW 12 | WNW 12 | SW 16 |
Wave Graph | |||||||||||||||||||||
28 | 25 | 11 | 0 | 24 | 11 | 9 | 0 | 34 | 31 | 49 | 27 | 25 | 24 | 24 | 25 | 31 | 55 | 48 | 48 | 41 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | off | glassy | cross-off | glassy | cross-off | off | off | off | off | off | glassy | cross-off |
High Tide | 4:52PM0.76m | 5:16AM0.44m | 5:25PM0.69m | 6:01AM0.48m | 5:56PM0.60m | 6:49AM0.51m | 6:24PM0.51m | 7:40AM0.53m | 6:51PM0.41m | 8:37AM0.54m | 7:15PM0.33m | 9:44AM0.55m | 7:33PM0.25m | ||||||||
Low Tide | 10:03AM-0.03m | 11:35PM-0.01m | 10:52AM0.02m | 00:02AM-0.01m | 11:41AM0.09m | 00:29AM0.00m | 12:35PM0.16m | 00:54AM0.02m | 1:40PM0.21m | 1:21AM0.04m | 3:09PM0.25m | 1:51AM0.05m | 5:41PM0.25m | 2:31AM0.07m | |||||||
6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
— | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — | — | 6:49 | — | |
mm | — | — | — | — | — | 2 | 1 | — | 10 | 33 | — | — | — | 3 | 1 | — | — | — | — | 1 | — |
Temp °C | 28 | 28 | 26 | 28 | 28 | 27 | 29 | 28 | 27 | 27 | 29 | 27 | 28 | 27 | 27 | 27 | 27 | 26 | 27 | 27 | 25 |
Feels °C | 28 | 26 | 26 | 27 | 27 | 26 | 27 | 28 | 28 | 30 | 33 | 32 | 33 | 31 | 31 | 30 | 30 | 28 | 30 | 32 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | NNE 6 | SSW 14 | NNE 6 | SSW 14 | SSW 13 | ENE 10 | NE 8 | NE 8 | NE 8 | NE 8 | NE 7 | NE 6 | NE 6 | NNE 5 | NNE 5 | NNE 5 | NNE 5 | NE 7 | NNE 6 | NNE 7 |
48 | 57 | 70 | 40 | 40 | 35 | 33 | 163 | 187 | 129 | 91 | 77 | 47 | 52 | 24 | 17 | 19 | 13 | 22 | 13 | 19 | |
Swell 2 Height (m) Direction Period (s) | WNW 12 | SSW 15 | W 12 | NE 8 | W 12 | ENE 10 | SSW 13 | ENE 10 | WNW 13 | WNW 13 | SSW 7 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | W 11 | WNW 13 | WNW 12 | WNW 12 | WNW 11 |
28 | 44 | 11 | 16 | 24 | 20 | 35 | 31 | 34 | 31 | 19 | 27 | 25 | 24 | 24 | 25 | 22 | 55 | 48 | 48 | 25 | |
Swell 3 Height (m) Direction Period (s) | SSW 12 | W 12 | S 18 | SSW 14 | SW 17 | W 12 | W 11 | SSW 13 | SSW 13 | SSW 13 | WNW 12 | SW 5 | SSW 12 | SSW 14 | ENE 8 | ENE 7 | W 13 | ENE 7 | SSW 16 | SW 16 | SW 16 |
28 | 25 | 6 | 41 | 12 | 11 | 9 | 35 | 18 | 33 | 49 | 1 | 14 | 20 | 6 | 5 | 31 | 5 | 25 | 42 | 41 | |
Wind waves Height (m) Direction Period (s) | NE 5 | — | NNE 6 | — | NE 6 | NNE 7 | NE 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 4 |
27 | — | 53 | — | 102 | 145 | 282 | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 46 | 49 | 46 | 50 | 46 | 35 | 35 | 46 | 46 | 0 | 49 | 88 | 87 | 49 | 88 | 84 | 35 | 0 | 0 | 11 |
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.











