Surf Forecasts:
Old Kona Airport State Park surf forecast from 5 Sep 2026:
- Best quality surf: Monday 7 Sep, 8AM (local time) - 6ft (1.8m), 13s period, SW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 11PM (local time) - 7ft (2.2m), 13s period, WSW swell with 1,693 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 8AM (local time) - 5.5ft (1.7m), 12s period with SSW swell.
Best Forecast Surf Conditions for Old Kona Airport State Park this week:
The surf forecast for Old Kona Airport State Park over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 05) at 8AM. The primary swell is predicted to be 1.7m and 12s period with a secondary swell of 0.5m and 6s. Another secondary swell of 0.4m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Old Kona Airport State Park in the next 16 days are 2.2m 13s and forecast to arrive on Monday (Sep 07) at 11PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Monday (Sep 07) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sat 5th Sep) | 5.5ft (1.7m) 12s |
| Best Surf | 8AM (Mon 7th Sep) | 6ft (1.8m) 13s |
| Most Powerful | 11PM (Mon 7th Sep) | 7ft (2.2m) 13s |
Table - best surf conditions forecast for Old Kona Airport State Park over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s on offer at Old Kona Airport State Park (Hawaii) over this 16-day window. We’re looking at a pretty flat run, honestly, so don’t expect much.
The pattern starts with a pulse of swell from the SSW kicking off on Saturday the 5th, peaking around 6ft with a 12-second period. The water is feeling about average for the time of year. Unfortunately, the wind is coming from the SSW at 15 km/h, making it a bit choppy and cross-onshore for the morning. The combined energy is moderate at 902. Not great, but it’s the best we’ve got early on. The afternoon switches to a WSW wind at 10 km/h but still onshore, so conditions stay pretty ordinary.
Sunday the 6th is more of the same – 5ft to 5ft SW swell, but the wind is onshore from the W at 10 km/h. The energy dips a little in the morning to 620, but the afternoon sees it jump to 1026. Still, the wind is killing the quality. The tide is also questionable.
Monday the 7th is the standout of the whole outlook. The swell picks up to 6ft in the morning and 7ft in the afternoon, from the SW and WSW. The period is a solid 12 to 13 seconds, so there’s some proper groundswell energy. The combined energy jumps to 1995 and then 2041 - that’s strong. The morning has a light onshore breeze, but by the afternoon the wind goes to the NNW at 10 km/h, making it cross-onshore and a bit lumpy. It’s still the best-looking surf in the whole window. It’s intermediate-level stuff, and it breaks consistently, so you’ll have waves. Just expect crowds sometimes.
From Tuesday the 8th onward, the swell backs off. The morning of the 8th has 6ft from the WSW at 11 seconds, but the energy drops. By Wednesday the 9th, we’re down to under 3ft, and from Thursday the 10th right through to the end of the window, it’s mostly under 3ft with periods that are too long for the size or too short to matter. It’s a long stretch of poor conditions and marginal surf. The combined energy falls below 500 for most of those days, and the wind is often onshore or messy. The 13th of September offers a rare glassy window in the afternoon with 3ft of windswell from the NNE at 7 seconds, and the 14th has a glassy afternoon too, but the waves are tiny and weak.
If you’re experienced, that Monday the 7th is your best bet. For the rest of it, you’re really just waiting for a change.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun night. Warm (max 28°C on Sat afternoon, min 26°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Wed afternoon. Warm (max 28°C on Mon night, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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) | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 | SW 12 | SW 12 | SW 13 | WSW 13 | WSW 13 | WSW 11 | W 11 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 17 | SW 18 | SSW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 780 | 811 | 646 | 615 | 594 | 633 | 841 | 1247 | 1370 | 1538 | 737 | 599 | 431 | 326 | 236 | 176 | 137 | 154 | 175 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross | on | on | on | on | cross-on | glassy | on | on | glassy | on | cross | cross-on | cross | on | glassy |
High Tide | 10:02PM0.22m | 11:36AM0.71m | 11:43PM0.24m | 12:34PM0.74m | 00:51AM0.28m | 1:22PM0.76m | 1:42AM0.34m | 2:05PM0.75m | 2:27AM0.40m | 2:44PM0.71m | 3:08AM0.46m | 3:19PM0.66m | 3:48AM0.51m | ||||||
Low Tide | 3:30AM0.08m | 7:23PM0.13m | 4:53AM0.08m | 7:59PM0.10m | 6:05AM0.06m | 8:31PM0.08m | 7:06AM0.05m | 9:00PM0.06m | 8:01AM0.05m | 9:27PM0.05m | 8:52AM0.06m | 9:52PM0.05m | |||||||
 |  |  |  | |  |  | | | | | | | | |  | | | | |
 | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:36 | — | 6:35 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — |
mm | — | — | — | — | — | 2 | 2 | — | — | — | — | — | 2 | 2 | 3 | 4 | 1 | — | 1 |
Temp °C | 27 | 27 | 28 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 27 | 26 | 27 | 26 |
Feels °C | 30 | 30 | 31 | 29 | 30 | 29 | 32 | 31 | 31 | 32 | 32 | 32 | 32 | 31 | 32 | 31 | 29 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 | SW 12 | SW 12 | SW 13 | WSW 13 | WSW 13 | WSW 11 | W 11 | WNW 10 | SSW 14 | NNE 6 | NNE 6 | NNE 5 | NE 7 | NNE 7 |
| kJ | 780 | 811 | 646 | 615 | 594 | 633 | 841 | 1247 | 1370 | 1538 | 737 | 599 | 255 | 326 | 51 | 74 | 46 | 46 | 43 |
Swell 2 Height (m) Direction Period (s) | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | SSW 19 | SSW 18 | SSW 17 | S 7 | SSW 15 | SSW 15 | SSW 8 | SW 8 | SW 7 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 16 |
| kJ | 31 | 27 | 34 | 32 | 26 | 360 | 553 | 719 | 150 | 621 | 543 | 188 | 119 | 79 | 236 | 176 | 131 | 89 | 175 |
Swell 3 Height (m) Direction Period (s) | SSW 20 | SSW 18 | S 12 | S 12 | S 12 | NNE 6 | NNE 7 | NNE 7 | SSW 16 | S 8 | SSW 9 | SSW 14 | SSW 14 | WNW 9 | SW 7 | SW 7 | SW 17 | SW 18 | SSW 12 |
| kJ | 38 | 64 | 47 | 69 | 69 | 33 | 25 | 29 | 671 | 173 | 202 | 449 | 431 | 92 | 53 | 25 | 137 | 154 | 46 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 6 | S 9 | — | — | — | — | — | N 7 | SSE 10 | S 4 | N 6 |
| kJ | — | — | — | — | — | — | — | — | 151 | 214 | — | — | — | — | — | 24 | 35 | 6 | 20 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 2 | 46 | 44 | 6 | 46 | 33 | 18 | 46 | 25 | 0 | 104 | 49 | 0 | 15 | 11 | 2 | 16 | 104 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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Information about the Old Kona Airport State Park Surf forecast
The above surf forecast table for Old Kona Airport State Park provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Old Kona Airport State Park can be found by selecting the local surf guide option on the grey menu. Our Old Kona Airport State Park 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 (Old Kona Airport State Park) 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 Old Kona Airport State Park 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.
Old Kona Airport State Park is 99 km (61 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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