
Surf Forecasts:
Kiholo Bay surf forecast from 12 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 with a secondary swell of 0.4m and 4s. 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 glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Wednesday (Sep 16) at 5PM.
| 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 folks, Rusty here. Let's have a look at what the next couple of weeks are shaping up like for this spot.
Honestly, I've got to be straight with you—we’re looking at a long, dry spell. For the first week and a half, the ocean is basically flat and unresponsive. There's a lot of clean, glassy conditions during that stretch, especially on the mornings, but with near-zero swell energy it's just not worth paddling out. We're talking about a solid 10 days or more where the best thing you can do is grab a snorkel or just enjoy the beach. The water temp is sitting at 82.0°, which is a touch warmer than usual for this time of year—nothing crazy, just a degree or so above the norm.
Now, if you're patient, there is a little glimmer of hope toward the very end. The morning of Wednesday, the 23rd of September, things start to look a bit more interesting over at Kiholo Bay. We finally get a bit of southwest groundswell pushing in around 1.0 ft, but the period stretches right out to 17 seconds. That's a long-period swell, which can be tricky at beach breaks, but Kiholo Bay being a beach and point setup, the point might actually handle it alright. The wind is forecast to be light out of the northwest, which is offshore for this spot, and it's looking glassy. The combined swell energy bumps up to a moderate 70, but the conditions are still described as just "surfable but very ordinary." It's not a standout, it's just the first pulse of something after a long quiet period. The morning of the 24th (Thursday) sees moderate energy of 109, with a 1.3 ft swell from the southwest at 15 seconds, but the wind turns onshore from the WNW, so it'll be choppy. The 25th (Friday morning) might offer the best of a mediocre bunch, with a 1.6 ft swell from the north at 13 seconds and moderate energy of 149, but again, the WNW wind is onshore, blowing straight into it. Not ideal.
In the end, there's no real standout session in this whole 16-day window. The numbers just aren't there. If you're a kiter, maybe you'll find something on those windier days, but for a regular surfer, this is a solid period to fix your dings and wait for the next proper swell. Patience is the play.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 28°C on Fri afternoon, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Wed morning, min 26°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||
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) | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | NNE 9 | W 11 | W 11 | W 10 | SSW 22 | SSW 21 | N 10 | SW 19 | WSW 8 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 |
Wave Graph | ||||||||||||||||||||
0 | 0 | 0 | 29 | 29 | 0 | 9 | 9 | 8 | 0 | 0 | 8 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | on | on | glassy | on | glassy | glassy | on | glassy | glassy | on | glassy | glassy | on | glassy | glassy | on | glassy | glassy |
High Tide | 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 | 7:17AM0.65m | 5:42PM0.35m | 8:22AM0.62m | ||||||||
Low Tide | 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 | 2:31PM0.32m | 00:10AM0.14m | 00:45AM0.18m | ||||||||
— | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — | |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 26 | 27 | 27 | 26 | 28 | 28 | 26 | 27 | 28 | 26 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 27 |
Feels °C | 32 | 30 | 29 | 29 | 30 | 31 | 31 | 30 | 29 | 31 | 30 | 31 | 31 | 31 | 32 | 33 | 31 | 33 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | NE 5 | NNE 8 | NNE 8 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 8 | NNE 8 | NNE 8 | NNE 4 | NNE 8 | NE 6 | NNE 8 | NE 6 | NE 6 | NE 7 | SW 16 | NE 6 | NE 6 |
11 | 37 | 43 | 43 | 68 | 68 | 68 | 48 | 61 | 26 | 7 | 52 | 32 | 50 | 31 | 51 | 67 | 65 | 52 | 37 | |
Swell 2 Height (m) Direction Period (s) | NNE 8 | SW 15 | SW 15 | SW 14 | NE 4 | SSW 12 | W 11 | SSW 14 | SW 14 | SSW 22 | NNE 8 | SW 20 | NNE 8 | SW 19 | SW 18 | SW 18 | SW 17 | ENE 10 | SW 16 | SW 17 |
23 | 57 | 60 | 29 | 5 | 15 | 9 | 20 | 7 | 46 | 24 | 98 | 22 | 94 | 79 | 152 | 75 | 19 | 64 | 148 | |
Swell 3 Height (m) Direction Period (s) | SW 15 | ENE 10 | ENE 10 | WSW 8 | SW 14 | SSW 15 | SSW 15 | W 11 | W 10 | SSW 14 | SSW 21 | N 10 | SW 19 | WSW 8 | NNE 7 | NNE 7 | NNE 9 | NNE 8 | ENE 10 | ENE 9 |
57 | 20 | 9 | 7 | 29 | 22 | 21 | 9 | 8 | 18 | 45 | 8 | 96 | 7 | 18 | 10 | 15 | 13 | 19 | 35 | |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 4 | — | — | NNE 4 | NNE 4 | — | NNE 5 | — | — | — | — | — | — | — | NNE 6 | — | — |
— | — | — | 7 | — | — | 7 | 7 | — | 19 | — | — | — | — | — | — | — | 43 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 94 | 21 | 14 | 94 | 94 | 28 | 94 | 88 | 22 | 97 | 22 | 22 | 21 | 21 | 21 | 21 | 14 | 21 | 14 | 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.










