Surf Forecasts:
Honokohau Harbour surf forecast from 18 Aug 2026:
- Best quality surf: Friday 21 Aug, 5AM (local time) - 2.5ft (0.7m), 17s period, SW swell with glassy winds.
- Most powerful swell: Friday 21 Aug, 5AM (local time) - 2.5ft (0.7m), 17s period, SW swell with 298 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 11PM (local time) - 1.5ft (0.4m), 11s period with WNW swell.
Best Forecast Surf Conditions for Honokohau Harbour this week:
The surf forecast for Honokohau Harbour over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 11PM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 0.7m and 5s. Another secondary swell of 0.2m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Honokohau Harbour in the next 16 days are 0.7m 17s and forecast to arrive on Friday (Aug 21) at 5AM. Winds are predicted to be glassy 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 23) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 17th Aug) | 1.5ft (0.4m) 11s |
| Best Surf | 5AM (Fri 21st Aug) | 2.5ft (0.7m) 17s |
| Most Powerful | 5AM (Fri 21st Aug) | 2.5ft (0.7m) 17s |
Table - best surf conditions forecast for Honokohau Harbour over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’ll be straight with you – the forecast for Honokohau Harbour over the next 16 days is a bit of a mixed bag of very small waves and a whole lot of waiting. There’s a long stretch of poor conditions early on, so don’t get your hopes up for a quick paddle.
The overall pattern is mostly tiny, weak swell with gentle winds. The water temp is sitting at 81° most of the time, which is pretty normal for this time of year, so no drama there.
The first real blip of anything surfable is on Wednesday the 19th of August in the afternoon. You’ll get a tiny 1ft swell from the SW with a period of 16 seconds. The combined energy is weak at 112, so it’s not packing much punch. The wind goes glassy, which is a big positive – it’ll be clean, but the waves are just ordinary. That’s the best you’ll see for a few days.
The quiet period drags on through Thursday and Friday the 20th and 21st, with swell staying under 2ft and the energy still weak (between 149 and 227). Winds are mostly onshore or light cross-onshore, so it’s not looking great.
Then, on Sunday the 23rd of August, the morning shows a slight bump in swell to 3ft from the WNW, with moderate energy at 360, but the wind is onshore, so it’s only marginal. That afternoon, the wind goes glassy, and the swell drops to 2ft from the SSW. The energy is still moderate at 313. The conditions are labelled as “expect good surf,” but honestly, for a reef break like Honokohau Harbour, it’s just tiny. This is the standout session of the whole outlook – the glassy wind and long period swell (15 seconds) will make for clean little waves, but it’s only for the patient and the lightest of boards.
Monday the 24th of August afternoon brings another glassy session with a 2ft SSW swell and 13-second period, and the energy picks up to 348. The wind is calm, so it’ll be smooth, but it’s still a very small wave.
Tuesday the 25th of August is the next best stretch – both morning and afternoon have glassy wind and 2-2ft SSW swell, with moderate energy around 302-365. The 16-second period suggests a bit of grunt for the size, but it’s still small. This is a close second to the 23rd.
After that, things get messy. From the 26th, the swell direction shifts to the NNE with a short period of 7 seconds, which is choppy and poor. The energy drops off, and the wind turns cross-onshore. This is a week of nothing worth chasing.
Finally, on the 30th of August, the swell swings back to the SW with a long 18-second period, but the energy is only moderate at 174 and the wind is cross-on, so it’s marginal. The 31st and 1st of September are similar – tiny and weak.
The standout here is definitely the afternoon of the 23rd of August – glassy, clean, and the longest period of the whole run. The 25th of August is also worth a look for the same glassy conditions. But honestly, for a spot that’s consistent and exposed to WNW, this is a quiet period. If you’re a beginner, the 1ft to 3ft swell is fine, but it’s not a wave you’ll get excited about.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Warm (max 27°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Fri afternoon, min 25°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 11 | NNE 5 | WNW 11 | WNW 13 | WNW 13 | SW 16 | SW 16 | SW 16 | SSW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 16 | SW 15 | SSW 15 | WNW 12 | WNW 11 | SSW 14 |
Wave Graph | ||||||||||||||||||||
42 | 34 | 41 | 58 | 54 | 67 | 65 | 130 | 209 | 143 | 288 | 127 | 121 | 261 | 164 | 112 | 150 | 158 | 126 | 186 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | cross-on | on | cross | on | glassy | cross | on | on | cross | cross-on | on | glassy | cross-on | cross-on | cross-off | on | glassy | glassy |
High Tide | 6:32PM0.40m | 8:28AM0.53m | 7:04PM0.33m | 9:39AM0.55m | 7:48PM0.27m | 10:50AM0.59m | 9:25PM0.24m | 11:51AM0.62m | 11:15PM0.23m | 12:41PM0.65m | 00:27AM0.25m | 1:23PM0.68m | 1:17AM0.27m | |||||||
Low Tide | 1:08AM0.07m | 3:10PM0.27m | 1:45AM0.08m | 5:22PM0.26m | 2:34AM0.09m | 7:02PM0.23m | 3:38AM0.10m | 7:46PM0.19m | 4:47AM0.10m | 8:16PM0.16m | 5:47AM0.09m | 8:43PM0.14m | ||||||||
— | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | |
6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | |
mm | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 26 | 27 | 28 | 26 | 27 | 27 | 26 | 27 | 28 | 26 |
Feels °C | 30 | 32 | 30 | 28 | 30 | 30 | 30 | 31 | 30 | 31 | 30 | 30 | 31 | 29 | 30 | 29 | 30 | 30 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | S 14 | NNE 5 | S 13 | S 13 | NNE 5 | S 12 | S 12 | NNE 4 | SSW 18 | SW 17 | SW 17 | SW 16 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 5 | NNE 6 | NNE 6 | NNE 6 |
320 | 34 | 162 | 121 | 15 | 71 | 72 | 12 | 209 | 143 | 288 | 127 | 28 | 48 | 33 | 42 | 31 | 58 | 82 | 42 | |
Swell 2 Height (m) Direction Period (s) | NNE 6 | S 13 | NNE 6 | NNE 5 | S 12 | WNW 12 | WNW 12 | SW 16 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | SW 16 | SW 16 | SSW 16 | SW 15 | SSW 15 | WNW 12 | WNW 11 | SSW 14 |
34 | 167 | 17 | 21 | 69 | 48 | 47 | 130 | 18 | 18 | 18 | 18 | 121 | 261 | 164 | 112 | 150 | 158 | 105 | 186 | |
Swell 3 Height (m) Direction Period (s) | WNW 11 | WNW 11 | WNW 11 | WNW 13 | WNW 13 | SW 16 | SW 16 | S 12 | S 11 | S 11 | S 15 | WNW 10 | S 13 | S 13 | S 12 | W 10 | WNW 10 | SSW 16 | SSW 15 | WNW 11 |
42 | 25 | 41 | 58 | 54 | 67 | 65 | 44 | 21 | 20 | 67 | 35 | 55 | 126 | 76 | 52 | 59 | 144 | 126 | 44 | |
Wind waves Height (m) Direction Period (s) | WSW 4 | — | — | W 6 | — | — | NNE 4 | — | — | — | — | — | — | S 3 | — | SSW 3 | — | — | — | — |
4 | — | — | 7 | — | — | 10 | — | — | — | — | — | — | 3 | — | 3 | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 104 | 12 | 113 | 14 | 14 | 87 | 0 | 25 | 47 | 24 | 12 | 47 | 100 | 0 | 45 | 45 | 0 | 47 | 0 | 0 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Honokohau Harbour Surf forecast
The above surf forecast table for Honokohau Harbour provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Honokohau Harbour can be found by selecting the local surf guide option on the grey menu. Our Honokohau Harbour 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 (Honokohau Harbour) 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 Honokohau Harbour 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.
Honokohau Harbour is 99 km (61 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.











