Surf Forecasts:
Kiholo Bay surf forecast from 16 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 8PM (local time) - 1ft (0.3m), 16s period, SW 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★+): Wednesday 19 Aug, 8PM (local time) - 1ft (0.3m), 16s period with SW swell.
Best Forecast Surf Conditions for Kiholo Bay this week:
The surf forecast for Kiholo Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 8PM. The primary swell is predicted to be 0.3m and 16s period with a secondary swell of 0.3m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kiholo Bay in the next 16 days are 0.4m 13s and forecast to arrive on Tuesday (Aug 18) at 11PM. 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 Saturday (Aug 22) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 19th Aug) | 1ft (0.3m) 16s |
| Best Surf | 8PM (Wed 19th Aug) | 1ft (0.3m) 16s |
| Most Powerful | 11PM (Tue 18th Aug) | 1.5ft (0.4m) 13s |
Table - best surf conditions forecast for Kiholo Bay over the next 16 days.
The Lowdown
Gather 'round, folks, Rusty here with the long-range outlook for Kiholo Bay (Hawaii). I've gotta be straight with you—this one's a tough pill to swallow. We’re looking at a solid 16-day stretch, but the surf just isn't showing up. The whole period is a write-off for any kind of decent paddle surfing. The waves are tiny, the energy is weak, and the conditions just aren't there.
Right from the start, Sunday the 16th, we've got ankle-snappers at a mere 1 ft from the WNW with that combined swell energy only hitting 32—that's basically nothing. The wind is light and variable, but it doesn't matter when there's no push. Monday the 17th brings a tiny 1 ft swell and a brief moment of glassy conditions in the afternoon, but it's still "poor surf conditions." The rest of the first week is more of the same: nothing but 1 ft to 1 ft waves, mostly from the WNW, with the combined energy rarely cracking 100. It's a total flat spell.
We roll into the second week, and honestly, the story doesn't change. Through the 23rd and 24th, we're still stuck with 1 ft to 2 ft slop. The combined energy finally bumps up to 101 on the afternoon of the 23rd, but that's still just weak, and with a cross-shore breeze, it's messy. The wind gets stronger on the 24th, creating a cross-chop on top of that tiny swell—kite surfers might find something to play with here, but for a surfer on a paddle board, it's a no-go. The energy drops back into the teens by the 25th.
There's a glimmer of something on the 30th and 31st, with the swell height inching up to 1 ft and the combined energy jumping to 116 and 110 on the 30th. The period is a solid 14 seconds from the WNW, which is a nice long-period groundswell—great for points and reefs, not so much for a beach break like Kiholo. But even then, it's still rated as "poor surf conditions." There's simply no quality to it. The only standouts here are the complete lack of standouts.
So, to put it plainly: don't bother waxing up. This is a rare blank run for the area. Keep your board in the bag, and maybe go for a swim. Forecasts can change, but right now, it's a long, flat wait.
Rusty
Short Range ForecastLight rain (total 5mm), mostly falling on Sun afternoon. Warm (max 29°C on Sun morning, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Fri afternoon. Warm (max 28°C on Wed afternoon, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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 13 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 13 | WNW 12 | WNW 12 | SW 16 | SW 18 | SW 17 | W 11 | W 11 | SW 16 | W 10 | SW 15 | WNW 10 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 32 | 49 | 27 | 25 | 25 | 25 | 25 | 25 | 33 | 48 | 28 | 41 | 49 | 47 | 21 | 9 | 39 | 18 | 37 | 20 | 36 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | cross-on | glassy | glassy | on | glassy | glassy | on | glassy | glassy | on | cross-on | glassy | on | on | glassy | on | glassy | glassy |
High Tide | 5:55PM0.57m | 7:15AM0.60m | 6:17PM0.49m | 8:14AM0.60m | 6:29PM0.41m | 9:26AM0.60m | 10:50AM0.61m | 12:03PM0.64m | 11:21PM0.26m | 12:57PM0.68m | 00:46AM0.28m | ||||||||||
Low Tide | 12:11PM0.25m | 00:27AM0.10m | 1:12PM0.31m | 00:52AM0.12m | 2:39PM0.36m | 1:22AM0.14m | 2:03AM0.16m | 3:10AM0.18m | 8:46PM0.25m | 8:47PM0.22m | |||||||||||
 | |  |  | |  | |  | | | |  | | | | |  | | | | | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:47 | — | — | 6:46 | — |
mm | 1 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — |
Temp °C | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 27 |
Feels °C | 33 | 32 | 32 | 32 | 33 | 32 | 30 | 31 | 31 | 30 | 31 | 32 | 30 | 31 | 32 | 31 | 32 | 31 | 31 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | NE 8 | NE 8 | NE 7 | NE 6 | NE 6 | NNE 5 | NNE 5 | NNE 5 | WNW 13 | NE 7 | NNE 4 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 6 | NE 6 | NE 6 |
| kJ | 112 | 75 | 65 | 45 | 62 | 22 | 17 | 10 | 33 | 24 | 3 | 16 | 16 | 17 | 31 | 18 | 31 | 35 | 21 | 80 | 45 |
Swell 2 Height (m) Direction Period (s) | SW 6 | SSW 6 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | W 7 | WNW 12 | WNW 12 | WNW 11 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 16 | WNW 10 |
| kJ | 18 | 15 | 27 | 25 | 25 | 25 | 25 | 25 | 4 | 48 | 28 | 25 | 49 | 47 | 69 | 69 | 39 | 64 | 37 | 63 | 34 |
Swell 3 Height (m) Direction Period (s) | WNW 13 | WNW 12 | WSW 5 | WSW 5 | S 14 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | SSW 16 | NNE 6 | SW 16 | WNW 11 | W 11 | W 11 | W 11 | W 10 | W 10 | WSW 10 | WNW 10 | SW 15 |
| kJ | 32 | 49 | 5 | 2 | 16 | 6 | 5 | 5 | 5 | 25 | 8 | 41 | 24 | 21 | 21 | 9 | 19 | 18 | 10 | 20 | 36 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NNE 4 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 7 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 44 | 27 | 31 | 14 | 14 | 99 | 94 | 99 | 14 | 21 | 97 | 12 | 23 | 16 | 21 | 23 | 29 | 21 | 90 | 21 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Kiholo Bay Surf forecast
The above surf forecast table for Kiholo Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kiholo Bay can be found by selecting the local surf guide option on the grey menu. Our Kiholo Bay 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 (Kiholo Bay) 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 Kiholo Bay 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.
Kiholo Bay is 89 km (55 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.
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