Surf Forecasts:
Lymans surf forecast from 9 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 5AM (local time) - 2ft (0.6m), 21s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 11AM (local time) - 2.5ft (0.8m), 18s period, SSW swell with 395 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 2AM (local time) - 2ft (0.6m), 16s period with SW swell.
Best Forecast Surf Conditions for Lymans this week:
The surf forecast for Lymans over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 11) at 2AM. The primary swell is predicted to be 0.6m and 16s period with a secondary swell of 0.5m and 5s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Lymans in the next 16 days are 0.8m 18s and forecast to arrive on Wednesday (Sep 16) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 5s period and expected on Friday (Sep 11) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 11th Sep) | 2ft (0.6m) 16s |
| Best Surf | 5AM (Tue 15th Sep) | 2ft (0.6m) 21s |
| Most Powerful | 11AM (Wed 16th Sep) | 2.5ft (0.8m) 18s |
Table - best surf conditions forecast for Lymans over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gonna level with you: this forecast is a slow one. There’s a whole lot of waiting around for the surf to get its act together, but there are a couple of windows that look worth getting excited about.
For the next week or so, forget it. We’re looking at tiny surf and walls of whitewater. It’s gonna be small, weak, and mostly junky with cross-shore breezes. The energy in the water is weak, and you’ll be doing more bobbing than surfing. Don't even bother waxing up.
Now, the first real glimmer of hope comes on Tuesday afternoon, September 15th. The wind goes glassy, which is always a good sign. The swell is still on the small side, only about 2ft, but it's coming from the SSW with a long 19 second period. That's proper groundswell, and for a reef and point like Lymans (Kauai), that means the lines will be clean and lined up. The energy is moderate at around 352, but the clean face will make it worthwhile. It won't be big, but it could be a fun one.
Then, keep your eyes peeled for the afternoon of Friday, September 18th. This is the real standout. The swell bumps up a notch to about 3ft from the SW, with a 17-second period. The wind goes glassy again, and the energy reading jumps to 524, which is the strongest we see all forecast period. This is the pick of the bunch. The combo of a decent size and glassy conditions for a spot that is fairly consistent is hard to beat. There should be some proper waves to be had.
The rest of the second week is more of the same: small surf in the 2 to 2ft range. The odd one might have a clean window, but nothing that will get your heart racing.
Water temp is about average for this time of year, coming in around 82°F, so no surprises there.
So, in short, the afternoons of the 15th and the 18th are your days. The 18th is the better one, with more size and energy. It’s not going to be huge, but it should be clean and fun. The rest of the time, you might get lucky, but I wouldn't gamble on it.
Rusty out.
Short Range ForecastModerate rain (total 19mm), heaviest on Wed night. Warm (max 28°C on Wed morning, min 25°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sat morning. Warm (max 27°C on Mon morning, min 25°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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) | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SW 16 | SSW 16 | SSW 15 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 23 | SW 22 | SSW 21 | SW 20 | SW 19 | SW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 326 | 249 | 176 | 170 | 154 | 211 | 166 | 150 | 178 | 66 | 64 | 69 | 104 | 54 | 51 | 137 | 118 | 180 | 309 | 303 | 372 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | glassy | on | on | cross-on | cross-on | cross-on | glassy | on | cross-on | glassy | on | on | glassy | on | glassy | glassy |
High Tide | 2:53PM0.80m | 3:17AM0.55m | 3:26PM0.76m | 3:55AM0.62m | 3:57PM0.70m | 4:32AM0.67m | 4:26PM0.62m | 5:10AM0.70m | 4:53PM0.54m | 5:48AM0.70m | 5:17PM0.47m | 6:30AM0.68m | 5:38PM0.40m | ||||||||
Low Tide | 8:11AM0.08m | 9:29PM0.07m | 9:01AM0.09m | 9:53PM0.06m | 9:48AM0.11m | 10:16PM0.06m | 10:34AM0.15m | 10:39PM0.06m | 11:20AM0.19m | 11:01PM0.07m | 12:10PM0.24m | 11:23PM0.09m | 1:07PM0.28m | 11:47PM0.12m | |||||||
 |  |  | |  |  |  | | | | | | | |  | | | | | | | |
 | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — |
mm | — | 2 | 4 | 2 | 2 | 4 | — | 2 | 3 | 1 | — | 3 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 31 | 32 | 31 | 32 | 31 | 30 | 30 | 29 | 30 | 29 | 30 | 30 | 29 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SW 16 | SSW 16 | SSW 15 | SW 15 | SW 14 | SW 16 | SSW 13 | SW 15 | NNE 9 | SW 14 | SW 14 | SW 22 | N 8 | SW 20 | SW 19 | SW 19 |
| kJ | 326 | 249 | 176 | 170 | 117 | 211 | 166 | 150 | 178 | 65 | 64 | 69 | 104 | 29 | 51 | 50 | 118 | 33 | 309 | 303 | 372 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | SSW 7 | NW 9 | SW 17 | SW 18 | N 5 | SW 9 | SW 9 | SW 9 | SW 16 | SW 13 | NNE 9 | NNE 9 | SW 15 | NNE 5 | SW 23 | SW 14 | SSW 21 | NNE 8 | NNE 8 | NNE 7 |
| kJ | 61 | 43 | 41 | 140 | 154 | 12 | 41 | 29 | 20 | 66 | 45 | 25 | 26 | 54 | 7 | 137 | 48 | 180 | 11 | 11 | 18 |
Swell 3 Height (m) Direction Period (s) | WNW 7 | WNW 7 | SSW 7 | NW 9 | NNE 7 | S 12 | SSE 8 | NNE 8 | NNE 8 | SW 8 | NNE 8 | SW 16 | SE 8 | SE 8 | NNE 8 | NNE 8 | NNE 4 | SW 13 | SW 13 | SW 12 | SW 12 |
| kJ | 56 | 31 | 18 | 26 | 15 | 71 | 24 | 21 | 11 | 18 | 22 | 65 | 18 | 17 | 14 | 14 | 6 | 44 | 40 | 38 | 37 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SE 5 | — | SE 4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 17 | — | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 95 | 95 | 99 | 99 | 2 | 0 | 99 | 49 | 16 | 16 | 1 | 0 | 78 | 8 | 1 | 82 | 79 | 0 | 82 | 0 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Lymans Surf forecast
The above surf forecast table for Lymans provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Lymans can be found by selecting the local surf guide option on the grey menu. Our Lymans 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 (Lymans) 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 Lymans 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.
Lymans is 94 km (58 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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