Surf Forecasts:
Hanalei Bay surf forecast from 4 Sep 2026:
- Best quality surf: Monday 7 Sep, 11PM (local time) - 8ft (2.4m), 13s period, ENE swell with offshore winds.
- Most powerful swell: Monday 7 Sep, 8PM (local time) - 8ft (2.5m), 13s period, E swell with 2,124 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 11PM (local time) - 8ft (2.4m), 13s 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 Monday (Sep 07) at 11PM. The primary swell is predicted to be 2.4m and 13s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Hanalei Bay in the next 16 days are 2.5m 13s and forecast to arrive on Monday (Sep 07) at 8PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 14s period and expected on Monday (Sep 07) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 7th Sep) | 8ft (2.4m) 13s |
| Best Surf | 11PM (Mon 7th Sep) | 8ft (2.4m) 13s |
| Most Powerful | 8PM (Mon 7th Sep) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for Hanalei Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s brewing for Hanalei Bay.
Right now, things are looking pretty average for the next few days. We’ve got a mix of onshore wind and short-period swell making for messy conditions. The swell energy is sitting at moderate levels (559), but that 6ft ENE swell with a short 7-second period is going to be lumpy and hard to ride. The water temp is 81°, basically spot on for this time of year, so nothing weird there.
The weekend of the 5th and 6th sees the swell building a bit, with 7ft waves from the east and a longer 13-second period. That’s a better quality groundswell, but the moderate cross-off wind is keeping it from being perfect. Energy ramps up nicely into the triple digits (1379-1482), but the onshore winds and risk of showers are holding it back from being a standout.
The real standout is Tuesday morning, September 8th. We’re talking glassy conditions with a light 3 mph NW wind, a solid 7ft ENE swell running on a clean 12-second period. The energy is strong (1475) and those conditions will have Hanalei’s reef and point working beautifully. This is expert territory at that size, and with it being a consistent spot, you can expect a quality session if you’re up for it.
After that, there’s a bit of a lull in quality, with smaller, choppier days through the middle of the month. The swell sticks around, but cross-shore winds and shorter periods make for less exciting options. Another possible window appears around Monday, September 14th and Tuesday, September 15th with 7ft to 8ft ENE swells and longer periods again. The energy on the 15th peaks at 2204, which is strong. Winds are light and cross-shore, meaning the wave faces should be reasonably clean, but it’s not a total classic. This one’s for the advanced crew; that size at Hanalei is no joke.
From the 18th onward, the swell drops back down to around 5ft to 6ft from the ENE. Conditions are mostly clean in the mornings with light cross-off winds, so there are some fun, smaller waves to be had, but nothing that screams "drop everything and go."
Overall, the pick of the fortnight is that glassy Tuesday morning on September 8th. Get it while it’s clean.
- Rusty
Short Range ForecastHeavy rain (total 20mm), heaviest during Sun night. Warm (max 26°C on Fri morning, min 24°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 16mm), heaviest on Mon afternoon. Warm (max 29°C on Tue morning, min 25°C on Mon morning). Winds decreasing (fresh winds from the SE on Mon afternoon, calm by Tue night). | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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) | ENE 7 | E 13 | E 14 | E 14 | E 13 | ENE 14 | E 13 | E 12 | E 12 | E 8 | E 9 | ENE 12 | ENE 12 | ENE 11 | ENE 10 | NW 10 | NW 10 | E 13 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 302 | 285 | 577 | 659 | 1465 | 1519 | 1379 | 1213 | 472 | 1253 | 899 | 1382 | 1084 | 870 | 346 | 195 | 208 | 168 | 199 | 167 | 237 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | glassy | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:48AM0.66m | 10:59AM0.70m | 10:22PM0.22m | 11:55AM0.73m | 11:41PM0.27m | 12:41PM0.75m | 00:35AM0.33m | 1:20PM0.75m | 1:21AM0.40m | 1:54PM0.72m | 2:04AM0.46m | 2:25PM0.67m | 2:46AM0.52m | ||||||||
Low Tide | 2:01AM0.06m | 6:49PM0.16m | 3:32AM0.05m | 7:01PM0.14m | 4:43AM0.03m | 7:19PM0.12m | 5:41AM0.02m | 7:39PM0.10m | 6:32AM0.02m | 7:59PM0.09m | 7:20AM0.04m | 8:20PM0.07m | |||||||||
 |  |  | | |  | | |  |  | | | |  |  | | | | | | | |
 | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — |
 | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — |
mm | — | 1 | — | — | 1 | 4 | 2 | 3 | 9 | 4 | 5 | 4 | — | — | — | — | 2 | 1 | — | — | 2 |
Temp °C | 26 | 26 | 25 | 26 | 26 | 24 | 26 | 26 | 24 | 26 | 27 | 27 | 29 | 29 | 27 | 29 | 28 | 26 | 26 | 26 | 25 |
Feels °C | 25 | 25 | 25 | 26 | 26 | 24 | 26 | 26 | 25 | 25 | 25 | 29 | 33 | 33 | 32 | 32 | 30 | 29 | 26 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | E 14 | E 13 | E 14 | E 14 | SSE 13 | ENE 14 | E 13 | SSW 14 | E 12 | SSW 16 | E 9 | ENE 12 | ENE 12 | ENE 11 | ENE 10 | ENE 9 | NW 10 | NW 9 | ENE 7 | E 13 | E 13 |
| kJ | 257 | 285 | 577 | 659 | 33 | 1519 | 1379 | 77 | 472 | 848 | 899 | 1382 | 1084 | 870 | 346 | 190 | 208 | 166 | 199 | 156 | 229 |
Swell 2 Height (m) Direction Period (s) | SSE 11 | SSE 12 | SSE 11 | SSE 10 | NNE 9 | SSW 14 | SSW 13 | SSW 12 | SSW 15 | NNW 14 | SW 15 | WSW 10 | WNW 9 | NW 9 | NW 9 | NW 10 | ENE 8 | E 13 | NW 9 | NW 8 | NW 8 |
| kJ | 49 | 54 | 38 | 19 | 17 | 36 | 99 | 28 | 242 | 19 | 2146 | 971 | 391 | 353 | 235 | 188 | 128 | 168 | 81 | 34 | 17 |
Swell 3 Height (m) Direction Period (s) | SSE 13 | N 12 | NNE 11 | NNE 10 | SW 17 | SSE 9 | SSE 10 | N 10 | E 15 | — | E 13 | SE 8 | SE 8 | SE 10 | E 14 | E 14 | E 13 | SSW 13 | E 13 | NW 10 | WNW 9 |
| kJ | 18 | 3 | 12 | 20 | 12 | 8 | 9 | 2 | 150 | — | 582 | 72 | 28 | 24 | 198 | 195 | 176 | 17 | 158 | 15 | 17 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 13 | — | — | E 12 | E 7 | E 8 | SSE 8 | S 4 | — | — | — | — | — | ENE 8 | — | ENE 7 | ENE 7 |
| kJ | 302 | 268 | 280 | 258 | 1465 | — | — | 1213 | 286 | 1253 | 587 | 7 | — | — | — | — | — | 143 | — | 167 | 237 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 35 | 35 | 34 | 34 | 34 | 34 | 144 | 36 | 159 | 322 | 0 | 0 | 7 | 0 | 0 | 29 | 29 | 29 | 34 | 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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