Surf Forecasts:
Kiholo Bay surf forecast from 8 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 5PM (local time) - 1ft (0.3m), 13s period, WNW swell with 33 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 13s and forecast to arrive on Wednesday (Aug 12) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 7s period and expected on Friday (Aug 14) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Wed 12th Aug) | 1ft (0.3m) 13s |
Table - best surf conditions forecast for Kiholo Bay over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s be straight with you – the outlook for Kiholo Bay (Kiholo-Bay) over the next 16 days is a quiet one, and patience is the name of the game. We’ve got a long stretch of small, weak swell and mostly ordinary conditions, so don’t rush for the board just yet.
Right off the bat, from Saturday the 8th through to Friday the 21st of August, it’s a tough run. The swell is tiny – mostly 0.7 ft to 1 ft – and the combined energy is low, sitting between 8 and 69 (weak). Winds are often light cross-onshore or glassy, but with hardly any push, it’s all just a bit of a bumpy lake. The water temperature is about average for this time of year. There are a few glassy moments, like Sunday afternoon the 16th and Tuesday afternoon the 11th, but the waves just aren’t there to make it worthwhile.
The one flicker of light shows up on Friday the 21st of August. In the afternoon, we get a little bump with a 1 ft swell from the southwest, and a very long period of 16 seconds. Combined energy is 69 (still weak). The wind goes glassy, and it’s marked as “surfable waves but very ordinary conditions.” That long-period groundswell might straighten out at a beach, but Kiholo is a beach and point setup, so the point could offer a cleaner roll. It’s inconsistent, and crowds are possible there, but this is your only real window.
From the 22nd onwards, it’s back to poor surf conditions with tiny swell again. The best you can say is that the wind occasionally goes offshore, but the energy is too weak to get excited about.
So, no standouts to rave about. The 21st afternoon is the only date worth checking, and that’s a long-shot call. Hang in there – things can change.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Sun afternoon. Warm (max 29°C on Sat afternoon, min 26°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Mon night. Warm (max 29°C on Wed afternoon, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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) | NE 11 | SSW 18 | SSW 18 | NE 6 | W 13 | W 12 | W 12 | W 11 | W 11 | W 10 | W 10 | W 10 | W 11 | W 11 | WNW 13 | SSW 16 | W 12 | W 12 | W 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 28 | 25 | 23 | 21 | 21 | 18 | 8 | 8 | 23 | 21 | 33 | 0 | 25 | 25 | 11 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | glassy | glassy | on | cross-on | glassy | on | glassy | cross-off | on | glassy | glassy | cross-on | cross | cross-off | cross | cross | glassy |
High Tide | 10:56PM0.27m | 1:03PM0.81m | 00:39AM0.28m | 1:54PM0.86m | 1:45AM0.32m | 2:38PM0.90m | 2:37AM0.36m | 3:19PM0.90m | 3:24AM0.42m | 3:56PM0.88m | 4:09AM0.48m | 4:30PM0.83m | 4:54AM0.53m | ||||||
Low Tide | 8:14PM0.25m | 8:46PM0.20m | 6:08AM0.05m | 9:17PM0.15m | 7:11AM0.03m | 9:46PM0.12m | 8:06AM0.02m | 10:15PM0.10m | 8:56AM0.02m | 10:44PM0.08m | 9:44AM0.06m | 11:11PM0.08m | |||||||
 |  | | | |  | | | |  | | | | | | | | | | |
 | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — |
 | 6:57 | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — |
mm | — | — | — | — | — | 2 | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 28 | 29 | 27 | 29 | 29 | 28 |
Feels °C | 31 | 30 | 31 | 31 | 31 | 31 | 31 | 30 | 31 | 30 | 30 | 31 | 29 | 29 | 30 | 29 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | NE 5 | NE 5 | NE 10 | NE 6 | NE 7 | NE 6 | NNE 7 | NNE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 7 | SSW 13 | NNE 6 | NE 6 | NNE 6 | SSW 15 | SSW 15 |
| kJ | 21 | 21 | 15 | 32 | 49 | 47 | 35 | 28 | 59 | 31 | 33 | 49 | 11 | 32 | 39 | 33 | 61 | 44 | 71 |
Swell 2 Height (m) Direction Period (s) | NE 11 | NE 10 | ENE 7 | SSW 18 | W 13 | W 12 | NE 6 | NE 7 | SSW 16 | W 10 | SSW 14 | SSW 14 | SSW 13 | S 18 | SSW 13 | SSW 16 | SSW 16 | SSW 12 | W 12 |
| kJ | 18 | 16 | 5 | 30 | 28 | 25 | 11 | 25 | 47 | 18 | 41 | 40 | 35 | 56 | 32 | 51 | 48 | 14 | 11 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 18 | SSW 18 | NE 9 | NE 9 | SSW 12 | W 12 | W 11 | W 11 | SSW 15 | W 10 | W 10 | W 11 | W 11 | WNW 13 | SSW 13 | W 12 | W 12 | S 18 |
| kJ | 17 | 32 | 31 | 13 | 13 | 15 | 23 | 21 | 21 | 23 | 8 | 8 | 23 | 21 | 33 | 32 | 25 | 25 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | NE 5 | — | — | — | — | — | — | — | — | — | NNE 4 | NE 5 | — | — | — | NNE 6 | NE 6 |
| kJ | — | — | 28 | — | — | — | — | — | — | — | — | — | 8 | 27 | — | — | — | 63 | 88 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 27 | 99 | 29 | 14 | 90 | 90 | 22 | 99 | 26 | 22 | 94 | 43 | 22 | 97 | 99 | 14 | 99 | 10 | 14 |
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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