Surf Forecasts:
Hanalei Bay surf forecast from 26 Aug 2026:
- Best quality surf: Saturday 29 Aug, 2AM (local time) - 1.5ft (0.5m), 14s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 1 Sep, 5PM (local time) - 5.5ft (1.7m), 9s period, ENE swell with 419 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 8AM (local time) - 3.5ft (1.1m), 8s period with E swell.
Best Forecast Surf Conditions for Hanalei Bay this week:
The surf forecast for Hanalei Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 26) at 8AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.4m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Hanalei Bay in the next 16 days are 1.7m 9s and forecast to arrive on Tuesday (Sep 01) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Sunday (Aug 30) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 26th Aug) | 3.5ft (1.1m) 8s |
| Best Surf | 2AM (Sat 29th Aug) | 1.5ft (0.5m) 14s |
| Most Powerful | 5PM (Tue 1st Sep) | 5.5ft (1.7m) 9s |
Table - best surf conditions forecast for Hanalei Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s coming for Hanalei Bay.
Honestly, the first week is a total write-off. We’re staring at a dry spell from Wednesday the 26th of August all the way through the end of the month, with no good surf on offer. The swell is small, mostly 1.0–1.5m, with a short, weak 7-second period, and the wave energy is in the weak to moderate range (130–318). The wind is a steady cross-off or cross from the east, which keeps the surface clean, but the waves just don’t have any power behind them.
The one real highlight comes on the afternoon of the 1st of September. Swell bumps up to 1.6m from the ENE, still a short 8-second period, but the combined energy hits 388 (moderate) and the wind is a clean cross-off. It’s the first “good surf conditions” call in the whole run. Water temp is about average for the season, nothing unusual. This is your best bet – not a classic Hanalei long wall, but it’ll be rideable and clean.
After that, it’s back to the grind. The 6th of September morning sees a jump in energy to 724 (strong) with 1.8m swell from the ENE, but the wind is cross and there’s a risk of thunderstorms. The 7th and 8th are ugly with onshore winds from the NNE and north, making it choppy and blown out.
Then, right at the end of the window, on the morning of the 10th of September, we get a gem. The wind goes glassy – dead calm – with 1.6m of ENE swell and an 8-second period, but the combined energy is a solid 586 (strong). This is the only “very good” rating in the entire forecast. It’s a long way out, so take it with a grain of salt, but if that glassy morning happens, Hanalei will be clean and fun. Just remember, crowds are often heavy here, so you won’t be alone.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Warm (max 27°C on Wed morning, min 24°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon morning. Warm (max 27°C on Sat afternoon, min 24°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | E 7 | E 7 | E 7 | E 7 | E 6 | E 7 | E 7 | E 7 | E 14 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 131 | 127 | 128 | 124 | 101 | 89 | 103 | 85 | 102 | 106 | 168 | 204 | 225 | 197 | 135 | 209 | 209 | 310 | 381 | 419 | 330 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off |
High Tide | 2:18PM0.69m | 2:07AM0.37m | 2:43PM0.67m | 2:44AM0.41m | 3:07PM0.64m | 3:24AM0.46m | 3:30PM0.59m | 4:07AM0.51m | 3:52PM0.53m | 4:56AM0.55m | 4:13PM0.46m | 5:53AM0.58m | 4:29PM0.39m | ||||||||
Low Tide | 8:29PM0.12m | 7:18AM0.03m | 8:46PM0.10m | 7:57AM0.05m | 9:05PM0.09m | 8:38AM0.09m | 9:25PM0.07m | 9:24AM0.14m | 9:49PM0.05m | 10:19AM0.19m | 10:15PM0.05m | 11:32AM0.24m | 10:47PM0.04m | ||||||||
 | |  |  | |  | | | |  | | | | | | | |  | | | | |
 | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — |
 | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — |
mm | — | — | — | — | — | 2 | — | — | 2 | 1 | — | — | — | — | 1 | 2 | — | — | — | — | 1 |
Temp °C | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 25 | 27 | 27 | 25 | 26 | 27 | 25 | 27 | 27 | 25 |
Feels °C | 28 | 27 | 26 | 27 | 27 | 26 | 26 | 27 | 25 | 25 | 27 | 25 | 27 | 27 | 26 | 26 | 27 | 26 | 29 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 10 | NW 10 | NW 9 | NW 9 | E 7 | NNE 6 | NNE 6 | E 6 | NE 7 | E 13 | E 12 | E 12 | ENE 11 | E 7 | E 10 | ENE 10 | ENE 8 | ENE 8 | ENE 9 | ENE 8 |
| kJ | 30 | 47 | 32 | 21 | 20 | 89 | 23 | 24 | 100 | 106 | 125 | 73 | 72 | 41 | 135 | 18 | 31 | 310 | 381 | 419 | 330 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | W 10 | W 10 | N 6 | NNE 8 | NNE 7 | E 16 | E 15 | E 14 | E 13 | W 12 | W 10 | W 11 | SSW 15 | NNE 7 | SSW 15 | SSW 14 | E 9 | SSW 14 | SSE 9 | SSE 9 |
| kJ | 20 | 8 | 8 | 3 | 11 | 19 | 79 | 72 | 102 | 89 | 11 | 8 | 9 | 23 | 54 | 21 | 20 | 6 | 20 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | W 10 | SSW 14 | NNE 9 | W 9 | W 11 | NW 8 | NW 8 | WNW 8 | NNE 6 | W 11 | NW 8 | SSW 17 | SSW 16 | W 11 | ENE 11 | W 12 | W 12 | SSW 14 | W 11 | SSW 14 | SW 14 |
| kJ | 8 | 19 | 7 | 7 | 9 | 11 | 11 | 6 | 11 | 9 | 2 | 27 | 25 | 9 | 39 | 11 | 11 | 20 | 9 | 20 | 8 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 7 | E 6 | — | E 7 | E 7 | — | ESE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | ENE 7 | ENE 7 | — | — | — | — |
| kJ | 131 | 127 | 128 | 124 | 101 | — | 103 | 85 | — | 70 | 168 | 204 | 225 | 197 | — | 209 | 209 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 35 | 34 | 34 | 34 | 34 | 34 | 34 | 0 | 34 | 36 | 36 | 34 | 34 | 0 | 34 | 34 | 34 | 34 | 0 | 0 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Hanalei Bay Surf forecast
The above surf forecast table for Hanalei Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Hanalei Bay can be found by selecting the local surf guide option on the grey menu. Our Hanalei 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 (Hanalei 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 Hanalei 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.
Are you planning a vacation in Kaua'i? If you are looking for accommodation near Hanalei Bay, camping, hotels and condos and appartments in Kaua'i, consider staying in Lihue - Kauai which is 31 km (19 miles) away. Alternatively, find information about places to stay and car hire in Nawiliwili which is 31 km (19 miles) away
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