
Surf Forecasts:
Kawaihae Breakwater surf forecast from 8 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 5PM (local time) - 1ft (0.3m), 13s period, WNW swell with 33 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 0.3m 13s and forecast to arrive on Wednesday (Aug 12) at 5PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.0m 8s period and expected on Saturday (Aug 15) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Wed 12th Aug) | 1ft (0.3m) 13s |
Table - best surf conditions forecast for Kawaihae Breakwater over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's take a good hard look at what's on the menu for the next couple of weeks. Honestly, it's a pretty quiet stretch for Kawaihae Breakwater (Hawaii). We've got a long, flat start and then some tiny, limp waves trying to show up, but it's mostly a waiting game.
Right now, through the start of the forecast, we're looking at a big gap with zero to ride. From Saturday the 8th through the end of the week on Friday the 14th, the waves are just too small and weak to even bother paddling out. The combined swell energy is barely a whisper, sitting at a lowly 48 or less (48). You'll see some glassy mornings and clean conditions, but with swell heights barely scraping 1 ft and a long period of 18 seconds, it's all show and no go. The water is sitting at a warm 81°, which is about average for the time of year.
The first real chance to get wet comes on Sunday, August 16th, but don't get your hopes up. The morning brings a small bump of 2 ft from the SW with a short period of 7 seconds, and a combined energy of 84. It's surfable but very ordinary, with cross-off winds from the NNW. The afternoon goes glassy again, but the swell drops back to nothing.
Things stay stubbornly small through the next week. From Monday the 17th into the following weekend, we're stuck with ankle-snappers at 1 ft to 1 ft. The best you can say is the wind is often offshore from the NE, keeping things clean. On Tuesday the 18th, we get a tiny pulse from the WNW with a long period of 15 seconds, giving us a combined energy of 70. It's a step in the right direction, but these are still poor surf conditions. By Thursday the 20th, we see a few 1 ft waves with glassy conditions in the morning and a combined energy of 75. That's about as good as it gets in this run, but it's still just a small, clean dribble.
The standout, if you can even call it that, is the morning of Thursday, August 20th. You've got a 1 ft swell from the WNW with a period of 11 seconds, but the kicker is the glassy conditions. It's the only time we get that perfect mirror finish on the water. For a tiny, clean log or a fun longboard session, that's your window. It's still tiny, but it's the most pleasant it's going to be.
Overall, this is a two-week stretch for doing other things. If you're desperate, the cleanest tiny waves are on the 20th, but it's a long way off and nothing to get excited about. The swell energy is weak across the board, so don't expect any power. It's a flat spell, plain and simple.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun afternoon. Warm (max 29°C on Mon morning, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Tue morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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) | SSW 18 | SSW 18 | SSW 18 | W 13 | W 12 | W 12 | W 11 | W 11 | SSW 16 | W 10 | W 12 | W 13 | W 11 | WNW 13 | WNW 12 | WNW 12 | NNE 6 | W 12 | W 12 | W 12 | W 12 |
Wave Graph | |||||||||||||||||||||
32 | 31 | 30 | 28 | 25 | 23 | 21 | 21 | 24 | 8 | 25 | 29 | 22 | 33 | 28 | 28 | 0 | 11 | 10 | 12 | 12 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | glassy | glassy | cross-off | cross-off | off | cross-off | off | off | cross-off | off | off | off | off | off | off | off | off | off |
High Tide | 1:16PM0.76m | 1:00AM0.19m | 2:08PM0.80m | 2:05AM0.23m | 2:55PM0.83m | 2:57AM0.27m | 3:37PM0.84m | 3:45AM0.33m | 4:16PM0.81m | 4:30AM0.38m | 4:52PM0.76m | 5:16AM0.44m | 5:25PM0.69m | ||||||||
Low Tide | 8:57PM0.09m | 6:24AM-0.04m | 9:32PM0.05m | 7:27AM-0.07m | 10:05PM0.02m | 8:23AM-0.08m | 10:36PM0.00m | 9:15AM-0.06m | 11:06PM-0.01m | 10:03AM-0.03m | 11:35PM-0.01m | 10:52AM0.02m | 00:02AM-0.01m | ||||||||
6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 |
Temp °C | 28 | 28 | 26 | 28 | 28 | 27 | 29 | 29 | 27 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 27 |
Feels °C | 29 | 29 | 28 | 32 | 32 | 31 | 31 | 32 | 30 | 29 | 29 | 28 | 28 | 29 | 27 | 28 | 27 | 26 | 27 | 28 | 25 |
Swell 1 Height (m) Direction Period (s) | NE 10 | NE 10 | NE 6 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NNE 5 | SSW 13 | NNE 5 | SSW 13 | SSW 16 | NNE 6 | SSW 14 | SSW 14 | SSW 14 | SSW 13 |
25 | 15 | 42 | 46 | 40 | 32 | 51 | 61 | 31 | 38 | 46 | 17 | 32 | 37 | 32 | 48 | 49 | 70 | 41 | 40 | 35 | |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SSW 18 | SSW 18 | W 13 | W 12 | W 12 | W 11 | SSW 15 | W 10 | SSW 14 | SSW 14 | SSW 13 | NE 6 | SSW 13 | SSW 16 | WNW 12 | SSW 15 | W 12 | W 12 | W 12 | W 12 |
32 | 31 | 30 | 28 | 25 | 23 | 21 | 47 | 18 | 41 | 40 | 35 | 7 | 32 | 51 | 28 | 44 | 11 | 10 | 11 | 11 | |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | NE 9 | NE 9 | SSW 12 | SSW 12 | W 11 | SSW 16 | W 10 | W 12 | W 13 | W 11 | WNW 13 | WNW 12 | SSW 12 | SSW 12 | S 18 | S 18 | SW 17 | SW 17 |
16 | 17 | 17 | 13 | 12 | 14 | 15 | 21 | 24 | 8 | 25 | 29 | 22 | 33 | 28 | 28 | 28 | 6 | 6 | 12 | 12 | |
Wind waves Height (m) Direction Period (s) | NNE 5 | NE 6 | — | — | — | — | — | — | — | — | — | — | NNE 5 | — | NE 6 | NNE 6 | — | NE 6 | NE 6 | NE 7 | NE 8 |
15 | 44 | — | — | — | — | — | — | — | — | — | — | 15 | — | 46 | 57 | — | 77 | 214 | 516 | 1401 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 88 | 88 | 35 | 86 | 91 | 50 | 86 | 91 | 46 | 91 | 54 | 50 | 88 | 88 | 35 | 88 | 35 | 11 | 88 | 46 | 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.











