Surf Forecasts:
Hanalei Bay surf forecast from 7 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 8AM (local time) - 8ft (2.4m), 10s period, ENE swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 11PM (local time) - 15ft (4.5m), 9s period, E swell with 3,467 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 8AM (local time) - 8ft (2.4m), 10s period with ENE 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 Tuesday (Sep 08) at 8AM. The primary swell is predicted to be 2.4m and 10s period. 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 4.5m 9s and forecast to arrive on Monday (Sep 07) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 14s period and expected on Tuesday (Sep 08) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 8th Sep) | 8ft (2.4m) 10s |
| Best Surf | 8AM (Tue 8th Sep) | 8ft (2.4m) 10s |
| Most Powerful | 11PM (Mon 7th Sep) | 15ft (4.5m) 9s |
Table - best surf conditions forecast for Hanalei Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's break down what's on the menu for Hanalei Bay.
The next couple of weeks are a bit of a mixed bag. We've got a brief window of solid surf early on, then a long, flat spell before a possible late-period pulse. The ocean is definitely playing hard to get.
The first real chance is Monday, September 7th, but it's ugly. You've got a 7ft to 10ft east swell, but it's getting torn up by a 30 to 40 km/h cross-off wind. The wave energy is up there, maxing out at 1399 (moderate energy), but it's just a wall of chop. No thanks.
Now, Tuesday, September 8th is the one. The standout. Morning brings a clean 7ft swell from the east-northeast with a gentle 15 km/h cross-off wind from the SSW. The wave energy is pumping at 1659 (strong energy). By the afternoon, it drops slightly to 6ft, but the period stretches to 11 seconds, giving it some real grunt. The water is a warm 80°F, which is about average for the time of year. This is a go. For experienced surfers only, though.
Wednesday, September 9th morning offers a chance. A 1.2m (4ft) swell from the east-northeast and a perfect 5 km/h offshore wind from the north. The swell is small and the energy is low at 648 (weak-moderate), but it'll be glassy. Could be a few fun ones for the early bird. The afternoon goes sideways with a cross wind.
From Thursday, September 10th right through the middle of the second week, it's flat. The swell drops to 3ft or less, and the wave energy bottoms out at 42 (weak energy). The wind is a constant 15 km/h cross-off from the east, but there's nothing to ride. A long stretch of no surf.
There is a late shift. Around Saturday, September 19th and into the final days, the swell direction swings to the north-northwest with periods reaching 14 seconds. The wave energy climbs back into the 300-400 range (moderate energy). It's still only 3ft to 4ft, and the wind is still a cross-off, but a long-period groundswell like that could wrap into the bay and offer some clean, fun lines for the patient surfer. Nothing to get too excited about, but it's something.
The best bet? Lock in Tuesday, September 8th. Big east-northeast swell, clean cross-off, and strong energy. That's the session to chase.
Rusty.
Short Range ForecastHeavy rain (total 78mm), heaviest during Mon night. Warm (max 28°C on Tue afternoon, min 24°C on Mon morning). Winds decreasing (near gales from the SE on Mon night, calm by Wed morning). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Thu afternoon. Warm (max 27°C on Thu morning, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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 8 | E 8 | E 9 | ENE 10 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 11 | ENE 10 | NE 9 | NE 9 | NE 9 | ENE 9 | NE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 518 | 1355 | 1672 | 884 | 745 | 597 | 269 | 184 | 125 | 385 | 292 | 167 | 132 | 99 | 328 | 163 | 128 | 112 | 85 | 88 | 69 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | cross-off | on | cross | 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 |
High Tide | 12:41PM0.75m | 00:35AM0.33m | 1:20PM0.75m | 1:21AM0.40m | 1:54PM0.72m | 2:04AM0.46m | 2:25PM0.67m | 2:46AM0.52m | 2:54PM0.60m | 3:27AM0.57m | 3:18PM0.53m | 4:10AM0.60m | 3:40PM0.45m | 4:53AM0.61m | |||||||
Low Tide | 7:19PM0.12m | 5:41AM0.02m | 7:39PM0.10m | 6:32AM0.02m | 7:59PM0.09m | 7:20AM0.04m | 8:20PM0.07m | 8:07AM0.08m | 8:40PM0.06m | 8:54AM0.12m | 9:01PM0.05m | 9:43AM0.17m | 9:22PM0.05m | ||||||||
 | |  |  |  |  | |  | | | |  | | | | | | | | | | |
 | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — |
 | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — |
mm | 23 | 16 | 38 | 1 | — | — | — | — | — | — | 5 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 27 | 27 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 25 | 26 | 26 | 24 | 26 | 26 | 25 | 27 | 26 | 25 |
Feels °C | 24 | 25 | 24 | 30 | 30 | 30 | 31 | 32 | 31 | 28 | 28 | 27 | 27 | 26 | 25 | 27 | 27 | 27 | 28 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | E 12 | SSW 15 | E 9 | W 9 | WNW 9 | ENE 11 | NW 9 | ENE 9 | ENE 8 | NW 8 | E 12 | ENE 7 | ENE 7 | ENE 8 | ENE 11 | ENE 10 | ENE 10 | NE 9 | NE 9 | ENE 9 | NE 8 |
| kJ | 496 | 411 | 1672 | 775 | 525 | 597 | 249 | 184 | 125 | 51 | 73 | 167 | 132 | 99 | 328 | 163 | 128 | 112 | 75 | 88 | 69 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | NW 13 | NW 12 | ENE 10 | ENE 11 | NW 9 | ENE 10 | NW 8 | NW 8 | E 12 | NW 7 | E 12 | E 11 | E 11 | SW 15 | NE 8 | NE 9 | E 10 | E 9 | NE 8 | ENE 9 |
| kJ | 133 | 44 | 37 | 884 | 745 | 320 | 269 | 107 | 69 | 108 | 19 | 71 | 93 | 91 | 35 | 69 | 115 | 92 | 85 | 74 | 26 |
Swell 3 Height (m) Direction Period (s) | SSE 8 | — | — | SE 8 | SE 8 | E 14 | E 13 | E 13 | E 13 | NW 10 | NW 10 | NW 7 | NW 9 | NNE 7 | WNW 8 | SSW 14 | W 11 | W 11 | WNW 13 | W 11 | WNW 12 |
| kJ | 14 | — | — | 105 | 31 | 103 | 130 | 125 | 119 | 15 | 14 | 8 | 12 | 35 | 7 | 19 | 9 | 9 | 17 | 9 | 14 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | S 14 | S 9 | S 9 | — | — | — | — | ENE 8 | ENE 7 | — | — | — | — | — | — | — | — | E 6 | E 5 |
| kJ | 518 | 1355 | 6479 | 1164 | 653 | — | — | — | — | 385 | 292 | — | — | — | — | — | — | — | — | 15 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 36 | 322 | 323 | 0 | 0 | 0 | 7 | 7 | 0 | 7 | 34 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 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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