Surf Forecasts:
Kiholo Bay surf forecast from 6 Aug 2026:
- Most powerful swell: Sunday 9 Aug, 11AM (local time) - 1ft (0.3m), 13s period, W swell with 28 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 Sunday (Aug 09) at 11AM. Winds are predicted to be onshore 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 | 11AM (Sun 9th Aug) | 1ft (0.3m) 13s |
Table - best surf conditions forecast for Kiholo Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the menu for Kiholo Bay over the next couple of weeks.
Right off the bat, I gotta be straight with you: this is a tough stretch. The first ten days or so are looking pretty flat and uninspiring. We're talking about tiny, weak swell that barely registers – the combined energy is in the single digits or low doubles for most of that time, so really nothing to get excited about. The water temp is about average for this time of year, so no surprises there.
The first real glimmer of hope doesn't come until Sunday the 16th of August. We finally see a bit of a pulse, with a 2 ft swell from the west, and a period of 13 seconds. That's a long-period groundswell, which is promising for the point and reef setup here. The combined energy jumps to 128 (moderate), and the morning is glassy. It's not a standout, but it's the first surfable wave we've seen. If you're desperate for a paddle, that's your window.
The next decent chance comes on Tuesday the 18th of August. We get another 2 ft west swell, this time with a 13-second period. The energy is 125 (moderate), and the afternoon turns glassy with a calm wind. That's a clean window, but still small.
Now, if you're looking for the best of the bunch, you've got to look at the afternoon of Wednesday the 19th of August. The swell bumps up slightly to 2 ft from the west-northwest, and the combined energy climbs to 152 (moderate). The wind is a light cross-onshore, which isn't perfect, but it's the biggest push of energy in the whole forecast. The swell direction lines up nicely with the optimum west-northwest for Kiholo Bay. This is the best on offer, but keep your expectations in check – it's still small waves for the intermediate crew.
Overall, it's a lean run. The good news is that Kiholo Bay is a consistent spot, so this flat spell isn't *that* unusual. Forecasts can change, and we might see a better pulse pop up. For now, the standout is the afternoon of the 19th of August, but don't expect any barrels.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Fri morning, min 25°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Mon afternoon. Warm (max 29°C on Mon morning, min 26°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | ||||||||||||||
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 12 | W 12 | W 12 | SSW 14 | W 12 | W 12 | NE 5 | NNE 5 | NE 6 | NE 6 | W 13 | W 12 | W 12 | W 11 | W 11 | W 10 | W 10 | W 12 | W 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 11 | 11 | 12 | 0 | 11 | 11 | 0 | 0 | 0 | 0 | 28 | 25 | 23 | 21 | 21 | 19 | 8 | 24 | 21 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | glassy | cross-on | cross-on | glassy | on | cross | glassy | on | glassy | glassy | on | cross-on | glassy | cross-on | cross-on | glassy |
High Tide | 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 | 3:19PM0.90m | 3:24AM0.42m | |||||||
Low Tide | 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 | 8:06AM0.02m | 10:15PM0.10m | ||||||||
 |  | |  | | | | | | | |  | | | |  | | | | |
 | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 6:58 | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 3 | 1 | — | 1 | — |
Temp °C | 26 | 28 | 28 | 26 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 30 | 30 | 31 | 30 | 30 | 32 | 31 | 30 | 30 | 31 | 31 | 32 | 31 | 32 | 31 | 32 | 30 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 4 | NE 5 | NE 8 | NNE 4 | W 12 | NE 6 | NE 5 | NNE 5 | NE 10 | NE 6 | NE 7 | NE 7 | NE 6 | NE 7 | NE 6 | NE 6 | NNE 6 | NE 6 | NE 5 |
| kJ | 7 | 16 | 9 | 8 | 11 | 44 | 22 | 19 | 15 | 51 | 75 | 91 | 31 | 44 | 49 | 43 | 26 | 31 | 23 |
Swell 2 Height (m) Direction Period (s) | NE 8 | NE 8 | W 12 | SSW 14 | SSW 14 | W 12 | NE 7 | NE 7 | SSW 18 | SSW 18 | W 13 | W 12 | W 12 | W 11 | SSW 15 | W 10 | SSW 14 | SSW 14 | SSW 13 |
| kJ | 18 | 10 | 12 | 20 | 18 | 11 | 13 | 8 | 31 | 30 | 28 | 25 | 23 | 21 | 47 | 19 | 40 | 40 | 35 |
Swell 3 Height (m) Direction Period (s) | W 12 | W 12 | SSW 14 | ENE 8 | ENE 7 | SSW 13 | SSW 13 | NE 10 | SSW 13 | SSW 13 | SSW 16 | SSW 12 | SSW 12 | SSW 12 | W 11 | SSW 15 | W 10 | W 12 | W 11 |
| kJ | 11 | 11 | 19 | 6 | 5 | 18 | 17 | 15 | 17 | 17 | 26 | 15 | 14 | 14 | 21 | 23 | 8 | 24 | 21 |
Wind waves Height (m) Direction Period (s) | — | — | NNE 5 | — | NNE 5 | — | — | — | NE 6 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 17 | — | 14 | — | — | — | 49 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 94 | 94 | 94 | 88 | 94 | 94 | 22 | 94 | 94 | 14 | 90 | 90 | 22 | 90 | 99 | 22 | 90 | 102 | 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.
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