Surf Forecasts:
Polihale surf forecast from 18 Aug 2026:
- Best quality surf: Saturday 22 Aug, 2PM (local time) - 3ft (0.9m), 11s period, WNW swell with glassy winds.
- Most powerful swell: Saturday 22 Aug, 8PM (local time) - 4ft (1.2m), 12s period, WNW swell with 419 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 11PM (local time) - 1.5ft (0.5m), 16s period with SW swell.
Best Forecast Surf Conditions for Polihale this week:
The surf forecast for Polihale over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 11PM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.8m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Polihale in the next 16 days are 1.2m 12s and forecast to arrive on Saturday (Aug 22) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 7s period and expected on Monday (Aug 24) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 20th Aug) | 1.5ft (0.5m) 16s |
| Best Surf | 2PM (Sat 22nd Aug) | 3ft (0.9m) 11s |
| Most Powerful | 8PM (Sat 22nd Aug) | 4ft (1.2m) 12s |
Table - best surf conditions forecast for Polihale over the next 16 days.
The Lowdown
Alright, listen up. Rusty here. We’re lookin’ at a long, dry spell to kick things off. Don’t even think about draggin’ your board down until the 22nd of August. That’s a solid five days of flat, lifeless water.
Polihale (sandbar) – The water’s warm, right around normal for this time of year, 81°F. No surprises there. The first real chance comes on Saturday, the 22nd of August. The morning is glassy, flat calm wind, with a 3ft swell from the WNW. The energy is weak though, at 183. The afternoon is where it’s at. The same WNW swell picks up to 3ft, the period is a solid 11 seconds, and the wind is a clean cross-off from the east. The combined energy jumps to 387. It’s clean, it’s rideable, but you gotta be patient. It’s not a day to call in sick for, but it’s a window.
Sunday the 23rd is similar, but the energy drops off through the day. Monday the 24th is back to the slow lane. The 25th and 26th are a total loss with a risk of thunderstorms.
Now for the one real highlight. Mark your calendar for the 31st of August – Monday morning. The wind is a light cross-off from the ENE at 6 mph, and the swell is a solid 4ft from the NE. The period is a short 8 seconds, more of a windswell, but the energy is punchin’ in at 364. This is the biggest, most energetic swell of the whole forecast. The waves will be there, and the conditions are “good surf conditions.” The afternoon is okay, but the morning is the session to be on.
The first few days of September are a dud. A long-period groundswell from the WNW (14 seconds) shows up on the 1st, but it’s only 2ft and the energy is drainin’ fast. It’ll be gutless.
So here’s the plan: the 22nd of August gets you clean, small waves, but the 31st of August is the main event. It’s the biggest push, and the wind is right. After that, it’s back to the waitin’ game.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Mon afternoon, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sat morning, min 24°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 | WNW 11 | S 13 | WNW 12 | WNW 12 | NE 7 | NE 6 | NE 6 | NE 6 | NE 7 | W 10 | NE 7 | NE 7 | W 10 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | NW 10 | NW 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 23 | 0 | 49 | 48 | 37 | 32 | 39 | 47 | 52 | 31 | 49 | 36 | 71 | 183 | 229 | 307 | 204 | 157 | 132 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | glassy | cross-off | glassy | glassy | cross-off | glassy | cross | glassy | glassy | glassy | glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:22PM0.40m | 8:38AM0.49m | 10:07AM0.51m | 11:26AM0.53m | 12:23PM0.57m | 1:05PM0.59m | 11:49PM0.22m | 1:40PM0.62m | 00:48AM0.24m | |||||||||||
Low Tide | 00:34AM0.12m | 1:02AM0.13m | 1:44AM0.13m | 2:53AM0.14m | 4:19AM0.13m | 9:37PM0.21m | 5:28AM0.11m | 9:26PM0.20m | ||||||||||||
 |  | | |  | | | |  | | | | | | | | | | | | |
 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 27 | 27 | 26 | 26 | 26 | 26 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 27 | 27 | 27 | 27 | 27 | 26 |
Feels °C | 29 | 29 | 30 | 29 | 29 | 29 | 29 | 28 | 30 | 28 | 28 | 29 | 28 | 29 | 31 | 31 | 31 | 30 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | S 14 | ENE 7 | S 13 | ENE 6 | E 7 | E 9 | NE 6 | NE 6 | NE 7 | ENE 7 | E 7 | NE 7 | ENE 7 | ENE 7 | WNW 11 | WNW 11 | WNW 11 | NW 10 | NW 10 |
| kJ | 244 | 191 | 108 | 121 | 70 | 43 | 71 | 39 | 47 | 52 | 90 | 39 | 36 | 61 | 68 | 229 | 307 | 204 | 157 | 132 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 6 | S 13 | WNW 12 | S 13 | NE 7 | NE 6 | E 8 | E 8 | E 8 | SSW 16 | NE 7 | SSW 16 | W 10 | WNW 12 | WNW 13 | SSW 16 | SSW 15 | SSW 15 | E 7 |
| kJ | 100 | 10 | 121 | 49 | 80 | 37 | 32 | 33 | 32 | 31 | 181 | 49 | 171 | 71 | 183 | 158 | 162 | 150 | 123 | 48 |
Swell 3 Height (m) Direction Period (s) | S 15 | WNW 11 | SSW 6 | SW 6 | WNW 12 | S 12 | S 12 | S 12 | SSW 18 | SSW 17 | W 10 | SSW 17 | E 8 | SSW 16 | SSW 16 | SSW 16 | S 12 | SSE 13 | S 11 | SSW 14 |
| kJ | 104 | 23 | 15 | 9 | 48 | 69 | 69 | 69 | 123 | 119 | 31 | 197 | 41 | 171 | 173 | 166 | 26 | 59 | 22 | 118 |
Wind waves Height (m) Direction Period (s) | E 8 | ENE 7 | — | ENE 7 | — | E 7 | — | — | — | — | — | — | — | — | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 | NE 6 |
| kJ | 329 | 167 | — | 88 | — | 70 | — | — | — | — | — | — | — | — | — | 64 | 96 | 154 | 180 | 92 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 170 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 36 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 8 |
Best forecast wave conditions in Kaua'i | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Polihale Surf forecast
The above surf forecast table for Polihale provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Polihale can be found by selecting the local surf guide option on the grey menu. Our Polihale 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 (Polihale) 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 Polihale 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 Polihale, camping, hotels and condos and appartments in Kaua'i, consider staying in Nawiliwili which is 43 km (27 miles) away. Alternatively, find information about places to stay and car hire in Lihue - Kauai which is 45 km (28 miles) away
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