
Surf Forecasts:
Kiholo Bay surf forecast from 8 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 11PM (local time) - 4ft (1.2m), 8s period, W swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 8AM (local time) - 7ft (2.2m), 12s period, WSW swell with 1,336 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 11PM (local time) - 4ft (1.2m), 8s period with W 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 Tuesday (Sep 08) at 11PM. The primary swell is predicted to be 1.2m and 8s period. 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 2.2m 12s and forecast to arrive on Tuesday (Sep 08) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 7s period and expected on Thursday (Sep 10) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 8th Sep) | 4ft (1.2m) 8s |
| Best Surf | 11PM (Tue 8th Sep) | 4ft (1.2m) 8s |
| Most Powerful | 8AM (Tue 8th Sep) | 7ft (2.2m) 12s |
Table - best surf conditions forecast for Kiholo Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a good look at what's on the cards for Kiholo Bay. Gotta be straight with you right off the bat – this isn't looking like a classic run. There's a little spike of energy early on, but it gets real quiet for a long stretch after that.
We start things off on Tuesday the 8th of September. There's some decent size showing up, with a solid 7ft swell rolling in from the WSW. The water is sitting at a warm 82° which is pretty much what you'd expect for this time of year, nothing unusual there. The swell energy is pumping hard, strong to very strong with a reading of (1101). But here's the catch – that 12 mph cross-shore wind from the SW is going to mess it up. It's going to be a bumpy, cross-chop mess, and the report itself calls it marginal. If you're a seasoned local and you absolutely have to get wet, you might find something, but don't expect anything clean.
By Tuesday afternoon, the swell drops to 6ft from the West and the wind swings cross-onshore. It's just not doing us any favors.
Now, there is a standout moment if you're patient. On the morning of Thursday the 10th of September, we get a tiny 1.0ft swell from the SW, but get this – it's a very long period groundswell at 16 seconds. The wind goes glassy. Absolutely flat calm. The energy is weak (42), so we're not talking about waves with any punch, but for a spot like Kiholo Bay, which is a beach and point setup, that long period and glassy conditions could line up a few fun, clean little peelers. It's delicate, but it's the best the whole forecast has to offer.
After that, it's a long, slow decline. The middle of September is dominated by flat spells and tiny, short-period leftovers. There are big gaps here. From around the 13th of September all the way through the 23rd, we're looking at wave heights consistently below 1.0ft or just completely flat (0 energy). It’s glassy a lot of that time, but there's nothing to ride.
So, here's the bottom line: Don't get your hopes up for any powerful sessions. The one bright spot, and I mean the *only* real bright spot, is that Thursday the 10th of September morning. If you're a log or a longboarder who loves a glassy, clean morning, that's your window. Just don't expect big waves. For the rest of the run, you're better off grabbing a snorkel.
Stay stoked, but stay realistic.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Wed afternoon. Warm (max 30°C on Tue morning, min 25°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Fri morning. Warm (max 29°C on Sun afternoon, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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) | WSW 11 | W 10 | WNW 8 | W 7 | W 6 | SW 7 | SW 16 | SW 18 | SW 16 | SW 10 | SW 9 | SW 15 | WSW 8 | SW 14 | SW 14 | NNE 8 | W 11 | NNE 8 | W 10 | NE 8 | NE 8 |
Wave Graph | |||||||||||||||||||||
1101 | 539 | 85 | 34 | 12 | 7 | 42 | 49 | 0 | 23 | 21 | 0 | 7 | 29 | 29 | 0 | 9 | 0 | 8 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | glassy | on | cross-on | glassy | glassy | cross-on | glassy | cross-on | cross | cross | on | glassy | glassy | on | glassy | glassy | cross-on | cross-on | glassy |
High Tide | 2:14PM0.82m | 2:34AM0.47m | 2:50PM0.80m | 3:14AM0.55m | 3:23PM0.75m | 3:52AM0.61m | 3:54PM0.69m | 4:30AM0.66m | 4:23PM0.62m | 5:07AM0.69m | 4:49PM0.54m | 5:46AM0.70m | 5:13PM0.47m | ||||||||
Low Tide | 9:03PM0.10m | 8:08AM0.08m | 9:27PM0.08m | 8:58AM0.09m | 9:51PM0.06m | 9:44AM0.11m | 10:13PM0.06m | 10:31AM0.15m | 10:36PM0.06m | 11:17AM0.20m | 10:58PM0.07m | 12:07PM0.24m | 11:20PM0.09m | ||||||||
6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | |
mm | — | 1 | 4 | — | 3 | 4 | — | 2 | 5 | 1 | 2 | 3 | — | — | — | — | — | — | — | 1 | — |
Temp °C | 30 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 26 | 27 | 26 | 26 | 27 | 27 | 26 | 28 | 29 | 27 | 28 | 28 | 27 |
Feels °C | 32 | 31 | 33 | 33 | 32 | 32 | 32 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 31 | 32 | 32 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | WSW 11 | W 10 | WNW 8 | W 7 | NE 7 | NE 7 | NNE 5 | NE 7 | NNE 8 | NNE 8 | NE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 9 | NNE 8 | SSW 15 | NNE 8 | NNE 8 | NE 8 | NE 8 |
1101 | 539 | 85 | 34 | 64 | 51 | 17 | 63 | 44 | 43 | 59 | 32 | 42 | 58 | 94 | 90 | 21 | 46 | 59 | 67 | 48 | |
Swell 2 Height (m) Direction Period (s) | NE 11 | NE 11 | NE 9 | NNE 8 | W 6 | SSW 13 | NE 7 | SW 18 | SW 16 | SW 10 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 12 | W 11 | N 5 | SW 14 | SSW 22 | SSW 21 |
145 | 134 | 62 | 44 | 12 | 33 | 18 | 49 | 67 | 23 | 57 | 57 | 49 | 29 | 29 | 15 | 9 | 15 | 8 | 46 | 45 | |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SSW 14 | WSW 8 | SW 7 | SW 7 | SW 7 | SW 16 | SSW 13 | ENE 7 | SW 16 | SW 9 | NE 4 | WSW 8 | WSW 8 | W 11 | SSW 15 | SW 12 | SSW 14 | W 10 | SSW 14 | SSW 13 |
84 | 82 | 33 | 14 | 13 | 7 | 42 | 16 | 5 | 65 | 21 | 5 | 7 | 7 | 9 | 22 | 6 | 20 | 8 | 18 | 17 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 8 | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 88 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 44 | 44 | 0 | 94 | 90 | 27 | 31 | 94 | 14 | 21 | 21 | 43 | 94 | 99 | 22 | 97 | 43 | 22 | 94 | 94 | 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.










