
Surf Forecasts:
Kawaihae Breakwater surf forecast from 2 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 8AM (local time) - 6ft (1.9m), 14s period, WSW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 11AM (local time) - 7ft (2.2m), 14s period, WSW swell with 2,061 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 8PM (local time) - 1.5ft (0.5m), 13s period with SSW 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 Friday (Sep 04) at 8PM. The primary swell is predicted to be 0.5m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kawaihae Breakwater in the next 16 days are 2.2m 14s and forecast to arrive on Tuesday (Sep 08) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Wednesday (Sep 02) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Fri 4th Sep) | 1.5ft (0.5m) 13s |
| Best Surf | 8AM (Tue 8th Sep) | 6ft (1.9m) 14s |
| Most Powerful | 11AM (Tue 8th Sep) | 7ft (2.2m) 14s |
Table - best surf conditions forecast for Kawaihae Breakwater over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what we’ve got on the cards for Kawaihae Breakwater.
Right off the bat, it’s a flat start. The first few days are a total write-off with hardly a bump. We’re looking at a real dry spell until things start to show a pulse around the 5th of September. Even then, early next week is pretty weak – we're talking ankle-snappers in the 2.3ft to 3.3ft range from the SW. The combined energy is in the weak-to-moderate category (133 to 245), so nothing to get excited about. The wind is mostly light and glassy, which is a huge plus for a reef setup like this, keeping the surface clean. But with such small swell, it's really only going to tempt a longboarder out for a cruise. The optimum swell direction here is W, and we’re getting SW, so it’s a bit off the money.
The real standout window hits on Monday the 8th of September. That afternoon, we see a proper pulse of energy. Swell jumps to 6.9ft from the WSW, with a long period of 13 seconds. That’s a solid groundswell. The combined energy rockets up to 1427, which is strong. Now, 6.9ft is getting into the territory that’s more for experienced surfers. But with glassy conditions and that long period, the waves will have real shape and punch. Kawaihae Breakwater is a reef, so a long-period WSW swell will set up nicely. The crowd factor is "sometimes", so you might have company, but it won't be a zoo. This is the clear winner across the whole forecast – a proper session for those who know what they’re doing.
Tuesday the 9th of September is still surfable with a cleaner 3.3ft on the morning, but the swell drops away fast after that. The second week from roughly the 10th onwards slips back into that weak, ordinary pattern. We get tiny pulses of long-period swell (15 to 21 seconds) but the height is pitiful – 1.0ft to 1.6ft. The combined energy values are in the double digits to low triple digits (19 to 188), which is just not enough to push a decent wave. It’ll be flat and frustrating.
So, bottom line: sit tight through the first week. The only real chance to get a decent wave is on Monday the 8th of September. Mark it in your calendar.
Short Range ForecastMostly dry. Warm (max 28°C on Wed morning, min 24°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Sat morning, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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 10 | W 10 | W 9 | W 9 | NNE 6 | NE 6 | NE 6 | SSW 11 | SW 11 | SSW 11 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | WSW 12 | WSW 13 | WSW 14 | WSW 13 | WSW 11 |
Wave Graph | |||||||||||||||||||||
9 | 8 | 8 | 2 | 2 | 0 | 0 | 0 | 0 | 133 | 160 | 232 | 202 | 245 | 198 | 176 | 255 | 669 | 2061 | 1427 | 469 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | cross-off | glassy | off | glassy | off | glassy | cross-off | glassy | glassy | glassy | cross | glassy | glassy |
High Tide | 8:06AM0.61m | 6:59PM0.30m | 9:20AM0.63m | 7:55PM0.22m | 10:42AM0.65m | 10:08PM0.17m | 11:57AM0.69m | 00:08AM0.19m | 12:59PM0.72m | 1:17AM0.24m | 1:49PM0.75m | 2:08AM0.31m | 2:32PM0.75m | 2:51AM0.39m | |||||||
Low Tide | 2:57PM0.22m | 1:24AM0.00m | 5:16PM0.20m | 2:19AM0.02m | 7:06PM0.15m | 3:40AM0.04m | 7:52PM0.09m | 5:12AM0.03m | 8:26PM0.06m | 6:29AM0.01m | 8:55PM0.03m | 7:32AM-0.01m | 9:22PM0.01m | ||||||||
6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | |
— | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 |
Temp °C | 28 | 27 | 26 | 28 | 28 | 25 | 27 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 27 | 29 | 29 | 28 |
Feels °C | 30 | 28 | 26 | 28 | 27 | 23 | 28 | 28 | 27 | 31 | 31 | 29 | 31 | 32 | 30 | 32 | 32 | 31 | 32 | 33 | 34 |
Swell 1 Height (m) Direction Period (s) | NE 8 | NE 7 | NNE 8 | NE 7 | S 14 | NNE 6 | NE 6 | NE 6 | NNE 6 | SW 11 | SSW 11 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | WSW 12 | WSW 13 | WSW 14 | WSW 13 | WSW 11 |
128 | 107 | 39 | 71 | 16 | 43 | 54 | 73 | 52 | 133 | 160 | 232 | 202 | 245 | 198 | 176 | 255 | 669 | 2061 | 1427 | 469 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 15 | SSW 15 | S 14 | W 9 | S 13 | SSW 13 | SSW 13 | SSW 11 | NE 7 | NE 6 | NNE 6 | NNE 7 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | NE 11 | NE 10 | NE 9 | NE 8 |
51 | 45 | 42 | 16 | 2 | 31 | 55 | 54 | 102 | 44 | 43 | 31 | 36 | 115 | 115 | 175 | 190 | 241 | 117 | 101 | 74 | |
Swell 3 Height (m) Direction Period (s) | W 11 | W 10 | W 10 | W 9 | E 12 | ENE 8 | E 14 | E 14 | E 14 | ENE 13 | ENE 13 | E 13 | ENE 12 | NNE 6 | NNE 7 | NNE 9 | NNE 6 | SSW 15 | SSW 14 | SSW 14 | SSW 11 |
9 | 8 | 8 | 2 | 3 | 6 | 15 | 16 | 34 | 57 | 57 | 86 | 89 | 22 | 25 | 45 | 30 | 78 | 80 | 67 | 79 | |
Wind waves Height (m) Direction Period (s) | — | — | NE 5 | — | NE 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | 23 | — | 85 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 91 | 35 | 35 | 98 | 35 | 49 | 88 | 65 | 50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23 | 0 | 0 |
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.










