
Surf Forecasts:
Kawaihae Breakwater surf forecast from 7 Aug 2026:
- Most powerful swell: Saturday 8 Aug, 2AM (local time) - 0.5ft (0.2m), 19s period, SSW swell with 37 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 0.2m 19s and forecast to arrive on Saturday (Aug 08) at 2AM. Winds are predicted to be cross-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 Sunday (Aug 09) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sat 8th Aug) | 0.5ft (0.2m) 19s |
Table - best surf conditions forecast for Kawaihae Breakwater over the next 16 days.
The Lowdown
Alright folks, Rusty here. Looking at the next couple of weeks, it’s a bit of a slow burn. The surf is going to be tiny to non-existent for the first week, so don’t get your hopes up for any quick hits. We’re looking at a long stretch of flatness before things even think about waking up. The good news is that once it does, the conditions look like they’ll be pretty clean. Hang tight, this is a waiting game.
Right off the bat, from Friday the 7th through the following Saturday the 15th, there’s essentially nothing on offer. We're talking swell heights of just 0.7ft to 1ft. The break at Kawaihae Breakwater is going to be a lake. The energy is weak, too – readings are mostly under 100, like 29 or 48 on the combined energy scale, which just confirms there’s no push at all. Even though the wind is mostly offshore and light, which is great for keeping things clean, there’s just no wave to ride. It’s going to feel like a total flat spell, so maybe catch up on some sleep or fix your gear.
The first real signs of life show up on Sunday the 17th. We finally see the combined energy jump into triple digits, hitting 122 in the morning and 155 in the afternoon, which tells us there’s some moderate energy finally arriving. The swell is still small, coming in around 1ft – 2ft from the W, but with a long-period of 15 seconds. That's a proper groundswell, and it brings better shaped waves. The morning looks pretty clean with a gentle 15 km/h NE offshore wind. It won’t be big, but it’s the first thing that’s actually surfable.
Monday the 18th keeps that promise, with similar 2ft – 2ft W swell and another 15-second period. It's not pumping, but the energy is still there, with readings of 126 and 82. The winds are lighter, from the N and NNE, which should keep the surface pretty tidy. Again, it's not going to blow your mind, but after a week of nothing, it's a welcome sight.
After that, we go right back into the small stuff. From Tuesday the 19th onward, the swell backs down to 1ft – 2ft and periods drop back to the 11-13 second range. The energy is back in the two-digit range, like 83 or 73, which is weak. The winds are light and mostly cross-off or glassy at times, so the surf will be perfect for a longboard if you’re desperate, but there’s just no juice. The highlight of this period is probably the Thursday morning on the 21st, with a 1ft and a long 18-second period SW swell showing 73 in energy. Still small, but it hints that the ocean is trying to do something.
Honestly, the standout window is that Sunday the 17th and Monday the 18th. It’s the most size and energy we see, the winds are favorable, and the period is long. It’s not going to be epic, but it’s the only time we get any kind of real wave. For the rest of the run, it’s a waiting game. The forecast this far out is promising, but treat it as a possibility, not a guarantee. I'll be checking the surf report.
Rusty out.
Short Range ForecastMostly dry. Warm (max 28°C on Fri morning, min 25°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Mon morning, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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 14 | SSW 13 | SSW 19 | SSW 18 | SSW 18 | SSW 18 | W 13 | W 12 | W 12 | W 11 | W 11 | SSW 15 | W 10 | W 15 | W 13 | S 18 | WNW 13 | SSW 16 | W 12 | W 12 | W 12 |
Wave Graph | |||||||||||||||||||||
18 | 18 | 37 | 32 | 31 | 30 | 28 | 25 | 23 | 21 | 21 | 23 | 8 | 17 | 29 | 0 | 33 | 0 | 25 | 25 | 11 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | off | cross-off | off | glassy | off | cross-off | off | cross-off | off | off | cross-off | off | off | cross-off | off | off | cross-off |
High Tide | 12:16PM0.69m | 11:28PM0.19m | 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 | ||||||||
Low Tide | 8:13PM0.15m | 5:14AM-0.02m | 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 | ||||||||
6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:53 | — | — | 6:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 26 | 27 | 28 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 |
Feels °C | 30 | 31 | 28 | 29 | 29 | 29 | 31 | 32 | 31 | 31 | 32 | 29 | 29 | 29 | 27 | 28 | 29 | 27 | 29 | 30 | 27 |
Swell 1 Height (m) Direction Period (s) | NE 4 | NE 5 | NE 11 | NE 5 | NE 10 | NE 6 | NE 6 | NE 6 | NE 6 | NE 7 | NE 6 | NE 5 | NE 6 | SSW 14 | NNE 5 | NE 5 | NE 6 | NE 6 | NNE 6 | NE 6 | NE 6 |
9 | 21 | 18 | 22 | 15 | 31 | 51 | 66 | 51 | 52 | 70 | 28 | 52 | 40 | 26 | 20 | 47 | 26 | 40 | 51 | 47 | |
Swell 2 Height (m) Direction Period (s) | W 12 | W 12 | SSW 13 | NE 10 | SSW 18 | NE 7 | NE 9 | W 12 | W 12 | W 11 | SSW 15 | W 10 | SSW 14 | W 10 | SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 16 | SSW 15 | SSW 15 |
11 | 11 | 17 | 16 | 31 | 18 | 12 | 25 | 23 | 21 | 47 | 19 | 41 | 8 | 34 | 32 | 32 | 51 | 48 | 44 | 42 | |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 19 | SSW 18 | SSW 13 | SSW 18 | W 13 | SSW 12 | SSW 12 | SSW 12 | W 11 | SSW 15 | W 10 | W 15 | W 13 | S 18 | WNW 13 | SSW 13 | W 12 | W 12 | W 12 |
18 | 18 | 37 | 32 | 17 | 30 | 28 | 15 | 14 | 14 | 21 | 23 | 8 | 17 | 29 | 56 | 33 | 32 | 25 | 25 | 11 | |
Wind waves Height (m) Direction Period (s) | — | — | NE 5 | — | NNE 5 | — | — | — | — | — | — | — | — | NE 6 | — | — | — | — | — | — | — |
— | — | 20 | — | 33 | — | — | — | — | — | — | — | — | 54 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 86 | 65 | 46 | 98 | 65 | 35 | 87 | 65 | 50 | 87 | 49 | 46 | 88 | 91 | 46 | 88 | 46 | 49 | 88 | 35 | 35 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











