
Surf Forecasts:
Kiholo Bay surf forecast from 5 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 2AM (local time) - 1ft (0.3m), 14s period, W swell with 36 kJ wave energy.
Best Forecast Surf Conditions for Kiholo Bay this week:
The most powerful waves expected at Kiholo Bay in the next 16 days are 0.3m 14s and forecast to arrive on Wednesday (Aug 12) at 2AM. 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 7s 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 (Wed 12th Aug) | 1ft (0.3m) 14s |
Table - best surf conditions forecast for Kiholo Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you. Looking at the next 16 days for Kiholo Bay, it’s a pretty quiet stretch. We’ve got a long run of tiny, weak surf ahead, but there are a couple of windows where conditions might just line up for a fun, mellow session if you’re not expecting much.
The water’s sitting at 81°, which is a touch warmer than normal for this time of year. That’s a nice little bonus.
For the first week or so, it's pretty much flat out. From Tuesday the 4th right through to around the 12th, we are looking at next to nothing. Swell heights are mostly under 1 foot with periods all over the shop, and the energy is just dead – readings of 15, 11, even zero. It's a lot of groveling on a log or just staying home. There’s a bit of bump on the surface at times with light cross-onshore breezes, especially on the 6th and 7th, but honestly, there’s no wave to push through it. This is a real dry spell, and it’s pretty normal for the area when it goes quiet like this. You just gotta wait it out.
Now, the first real sign of life comes on Thursday the 13th. We finally see the energy start to build, with a reading of 71 in the morning, climbing through the day. The swell fills in from the WNW at 1ft with a period of 15 seconds. That’s a proper long-period groundswell, even if it’s small. The morning is looking clean with light offshore winds, but the standout is the Thursday afternoon. The wind goes glassy, the water smooths right out, and you’ve got those 1ft lines rolling in. It’s surfable, but honestly, it’s still pretty ordinary. You’ll get a few fun ones on the point.
The pulse holds through the week. Friday the 14th sees the size nudge up to 2ft, but the wind gets a bit messy in the afternoon, going cross-shore and putting some ripples on the face. Not ideal. Saturday the 15th is where it gets interesting. Swell pushes up to 2-2ft from the W with a period of 15 seconds. The energy reading jumps to 156, which is a solid step up from the nothing we’ve had. That Saturday afternoon is looking like the pick of the week: glassy conditions, clean lines, and the most energy we’ve seen all forecast. It’s not big, but it will be clean and workable.
We see a similar pattern on Sunday the 16th – 2ft from the W with a 14-second period and glassy afternoon conditions. Another window for a few long, clean waves. The swell stays in the 2ft to 2ft range going into the next week, but the winds start to become more of a factor with mornings often onshore. The afternoons with lighter winds and glassy patches, like on the 18th, will still be worth a look.
Into the second week, the long-range stuff gets a bit more speculative, but there’s potential. Wednesday the 19th shows the most energy of the entire run, hitting 175, with 2ft swell at a 15-second period. The morning is onshore, but the afternoon glass-off looks promising. That could be the best day of the whole stretch, but we’re a week out so treat it as a promising prospect rather than a guarantee.
Overall, don’t hold your breath for the first week. The standout days, if you can call them that, are the afternoons of the 15th and 16th, and maybe the 19th if it comes together. It’s small, clean, and for intermediate surfers on a longboard or fish, it could be a real treat. For everyone else, it’s a lot of waiting.
Rusty out.
Short Range ForecastSome drizzle, heaviest during Wed night. Warm (max 28°C on Wed morning, min 25°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sun afternoon. Warm (max 28°C on Sat morning, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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 13 | W 13 | W 12 | NE 8 | W 12 | W 12 | W 12 | W 12 | W 12 | NE 11 | SSW 18 | NE 6 | NE 6 | W 13 | W 12 | W 12 | W 11 | W 11 | W 10 |
Wave Graph | |||||||||||||||||||
12 | 28 | 11 | 0 | 11 | 12 | 11 | 11 | 11 | 0 | 0 | 0 | 0 | 29 | 25 | 24 | 21 | 21 | 19 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | on | cross-on | cross-on | glassy | cross-on | cross-on | glassy | on | cross-on | glassy | on | glassy | glassy | on | glassy | glassy |
High Tide | 9:29AM0.62m | 7:23PM0.40m | 10:51AM0.68m | 8:14PM0.32m | 12:04PM0.74m | 10:56PM0.27m | 1:03PM0.81m | 00:39AM0.28m | 1:54PM0.86m | 1:45AM0.32m | 2:38PM0.90m | 2:37AM0.36m | |||||||
Low Tide | 1:49AM0.10m | 4:11PM0.37m | 2:36AM0.10m | 7:20PM0.32m | 3:40AM0.09m | 8:14PM0.25m | 8:46PM0.20m | 6:08AM0.05m | 9:17PM0.15m | 7:11AM0.03m | 9:46PM0.12m | ||||||||
— | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
6:59 | — | 6:58 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 1 | 1 |
Temp °C | 27 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 30 | 30 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 31 | 30 | 31 | 32 | 31 | 31 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 5 | NE 9 | NNE 5 | NNE 5 | NE 5 | NNE 5 | SSW 14 | NNE 4 | NE 5 | NNE 5 | NE 6 | NE 10 | NE 6 | NE 7 | NE 6 | NE 6 | NE 7 | NE 6 | NE 5 |
11 | 22 | 21 | 5 | 21 | 17 | 20 | 7 | 35 | 17 | 24 | 14 | 52 | 73 | 83 | 31 | 36 | 54 | 11 | |
Swell 2 Height (m) Direction Period (s) | ENE 10 | W 13 | NE 9 | NE 8 | NE 8 | NE 8 | ENE 7 | NE 9 | W 12 | NE 11 | NE 10 | SSW 18 | SSW 18 | W 13 | W 12 | W 12 | NE 4 | SSW 15 | NNE 7 |
39 | 28 | 20 | 18 | 10 | 9 | 5 | 14 | 11 | 30 | 15 | 31 | 30 | 29 | 25 | 24 | 10 | 47 | 18 | |
Swell 3 Height (m) Direction Period (s) | W 13 | NNE 9 | W 12 | ENE 4 | W 12 | W 12 | W 12 | W 12 | SSW 13 | SSW 13 | SSW 18 | SSW 13 | NE 9 | SSW 16 | SSW 12 | NE 8 | W 11 | W 11 | W 10 |
12 | 8 | 11 | 2 | 11 | 12 | 11 | 11 | 18 | 17 | 32 | 17 | 13 | 26 | 15 | 11 | 21 | 21 | 19 | |
Wind waves Height (m) Direction Period (s) | — | NE 4 | — | — | — | — | NNE 5 | — | — | — | — | NE 6 | — | — | — | — | — | — | — |
— | 4 | — | — | — | — | 14 | — | — | — | — | 42 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 26 | 94 | 94 | 27 | 94 | 94 | 22 | 94 | 94 | 22 | 94 | 94 | 14 | 99 | 22 | 22 | 99 | 26 | 22 |
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.











