Surf Forecasts:
Kiholo Bay surf forecast from 9 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 2PM (local time) - 1.5ft (0.4m), 18s period, SW swell with 109 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s 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 Tuesday (Sep 15) at 5AM. The primary swell is predicted to be 0.3m and 21s 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 0.4m 18s and forecast to arrive on Wednesday (Sep 16) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 7s period and expected on Thursday (Sep 10) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 15th Sep) | 1ft (0.3m) 21s |
| Best Surf | 5AM (Tue 15th Sep) | 1ft (0.3m) 21s |
| Most Powerful | 2PM (Wed 16th Sep) | 1.5ft (0.4m) 18s |
Table - best surf conditions forecast for Kiholo Bay over the next 16 days.
The Lowdown
Alright, let’s get real about the next couple of weeks.
Honestly, it’s looking flat and pretty desperate out here for a while. We’ve got a long stretch of nada before anything even gets close to rideable. From now until the 23rd of September, there’s just nothing doing. Most days are showing tiny 0.3ft to 1ft dribble with weak energy readings (between 1 and 49), and a lot of it is just cross-onshore or straight onshore junk. The swell direction doesn't match what the bay wants, and the periods are either too short or too inconsistent. There are a few glassy windows, like Thursday the 10th, Saturday the 12th, and Monday the 14th in the afternoon, but even then, there’s just no power behind it. It’s the kind of flat spell where you start checking the tide charts for fun.
Now, the one slight glimmer in all this comes on the 23rd of September, Wednesday. We finally see a pulse of W swell roll in, bumping things up to around 2ft and the energy jumps way up to 113. That’s a big difference from the weak stuff we’ve been seeing. The period is a nice long 15 seconds too, which means some actual groundswell energy. Kiholo Bay (Big Island) is the only break that’s even on the radar here and it’s a consistent spot, though it’s `sometimes` packed. For a wave this size, it’s going to be your best bet. The morning is looking glassy with that WNW wind at 3 mph, so it should be clean. This isn’t a giant day by any stretch – you’ll be on a longboard for sure – but after this drought, a clean 2ft with that kind of period is a genuine standout. Keep your expectations low, but be ready for that Wednesday morning session. After that, the energy fades back down and it looks like we’re back to the waiting game.
For the water temperature, it’s about 82°F which is pretty much normal for this time of year, so you can leave the booties at home.
Honestly, for the first couple of weeks, you might be better off with a foil or just working on your tan. It’s that flat.
Rusty
Short Range ForecastModerate rain (total 11mm), heaviest on Wed afternoon. Warm (max 29°C on Wed morning, min 25°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Mon morning, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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) | W 7 | W 6 | NE 7 | SW 16 | SW 18 | SW 16 | SW 10 | SW 9 | SW 15 | SW 14 | SW 14 | SW 14 | NE 9 | W 11 | W 11 | W 10 | W 10 | NNE 8 | WSW 9 | WSW 9 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 22 | 11 | 0 | 42 | 49 | 0 | 14 | 21 | 0 | 0 | 29 | 29 | 0 | 9 | 9 | 8 | 11 | 0 | 8 | 8 | 7 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | glassy | glassy | glassy | on | cross | glassy | cross-on | cross-on | glassy | on | glassy | glassy | on | glassy | glassy | on | cross-on | cross-on |
High Tide | 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 | 6:28AM0.68m | 5:32PM0.40m | ||||||||
Low Tide | 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 | 1:05PM0.29m | 11:43PM0.12m | |||||||
 |  |  | |  | |  | |  | | |  | | | | | | | | | | |
 | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — |
 | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — |
mm | — | 2 | 4 | — | 2 | 2 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 33 | 32 | 33 | 32 | 33 | 31 | 30 | 31 | 31 | 31 | 29 | 31 | 30 | 30 | 29 | 31 | 31 | 32 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NNE 4 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 9 | NE 9 | NNE 9 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 7 | NNE 7 |
| kJ | 44 | 55 | 49 | 67 | 55 | 12 | 26 | 51 | 37 | 43 | 64 | 65 | 79 | 49 | 62 | 61 | 45 | 55 | 37 | 48 | 36 |
Swell 2 Height (m) Direction Period (s) | W 7 | W 6 | SSW 13 | SW 16 | SW 18 | SW 16 | NE 4 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 12 | NE 5 | SSW 14 | SW 14 | SSW 22 | SSW 21 | SW 20 | SW 19 | SW 19 |
| kJ | 22 | 11 | 33 | 42 | 49 | 67 | 4 | 57 | 57 | 49 | 29 | 29 | 15 | 11 | 20 | 8 | 46 | 45 | 98 | 96 | 94 |
Swell 3 Height (m) Direction Period (s) | SW 7 | SW 7 | SSW 7 | SSW 13 | SSW 13 | NNE 8 | SW 10 | SW 9 | ENE 10 | ENE 10 | WSW 8 | WNW 11 | SSW 15 | W 11 | W 11 | W 10 | W 10 | SSW 13 | WSW 9 | WSW 9 | WSW 8 |
| kJ | 14 | 13 | 5 | 16 | 16 | 13 | 14 | 21 | 20 | 9 | 7 | 12 | 22 | 9 | 9 | 8 | 8 | 17 | 8 | 8 | 7 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 4 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 11 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 94 | 90 | 26 | 94 | 94 | 14 | 21 | 14 | 43 | 94 | 94 | 14 | 97 | 22 | 14 | 97 | 95 | 25 | 21 | 21 | 21 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Kiholo Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest