Surf Forecasts:
State Line surf forecast from 10 Sep 2026:
- Best quality surf: Friday 11 Sep, 8PM (local time) - 6ft (1.8m), 9s period, NW swell with cross-offshore winds.
- Most powerful swell: Monday 14 Sep, 5PM (local time) - 8ft (2.5m), 7s period, NW swell with 742 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 2AM (local time) - 2.5ft (0.7m), 18s period with SW swell.
Best Forecast Surf Conditions for State Line this week:
The surf forecast for State Line over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 10) at 2AM. The primary swell is predicted to be 0.7m and 18s period with a secondary swell of 1.3m and 7s. Another secondary swell of 0.9m and 12s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at State Line in the next 16 days are 2.5m 7s and forecast to arrive on Monday (Sep 14) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 7s period and expected on Thursday (Sep 10) at 8PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 10th Sep) | 2.5ft (0.7m) 18s |
| Best Surf | 8PM (Fri 11th Sep) | 6ft (1.8m) 9s |
| Most Powerful | 5PM (Mon 14th Sep) | 8ft (2.5m) 7s |
Table - best surf conditions forecast for State Line over the next 16 days.
The Lowdown
Alright folks, let’s get into it. The forecast for the next couple of weeks is a mixed bag at State Line. We’ve got a lot of marginal days, a few windows of cleaner conditions, and one real standout session that’s gonna be for the experienced crew only.
The coming days are pretty underwhelming. Wednesday afternoon sees a small 2ft SW swell at 19 seconds, but with cross-on winds, it’s not going to be anything special. The water temp is sitting at 58°, which is about average for the time of year, so no surprises there. The combined energy is moderate (695).
Thursday morning is a bit bigger at 3ft SW, but still with cross-on wind. Not great. The real shift comes Thursday afternoon, with a 7ft NW windswell that’s short period (7 seconds) and cross-shore, making for a messy, choppy lineup. Not recommended.
Friday and Saturday are more of the same – small SW swells, cross or onshore winds, and the combined energy hovering in the moderate range (620-727). The quality just isn’t there.
Sunday afternoon on the 13th of September is a bit of a wild card. A 8ft NW windswell (6 seconds) with a fresh cross-offshore breeze (35 km/h) will clean it up, but the short period and size will make it a bit of a grunt session. Not for the faint of heart.
The next week opens with more small, wind-affected SW swells. There’s a gap of poor to no surf from the 19th through the 21st, with the 19th and 20th rated as “poor surf conditions.” The only bright spot in that stretch is Sunday afternoon the 20th of September, where an 8ft NW windswell and a strong cross-offshore breeze (35 km/h) will clean things up, but the short period (7 seconds) and size mean it’s expert territory.
The standout, and I mean the real standout, is Wednesday the 23rd of September. We’ve got a 10ft NW groundswell, with a period of 9 seconds, and it’s glassy. Zero wind. The combined energy is a powerful 1524. The only catch is that this swell is predicted to be too big for State Line, so this is strictly for the experts. The wind and tide are favorable, but the size will be intimidating. Don’t even think about it if you’re not comfortable in triple-overhead-plus conditions.
After that, Thursday the 24th of September eases off to a 7ft NW swell, but it’s a bit more moderate with light cross-shore winds. The quality is still marginal, but a step down in intensity.
So, overall, the best bet is that glassy, 10ft session on the 23rd of September – but it’s a big call. Keep your eyes on the forecast, because it could be a wild one.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Wed afternoon, min 11°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sat afternoon. Warm (max 21°C on Sun afternoon, min 12°C on Sat night). Winds decreasing (fresh winds from the NNW on Sun afternoon, calm by Mon night). | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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) | SW 19 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SSW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | NW 6 | NW 6 | NW 7 | NW 7 | NW 7 | SW 17 | SW 16 | NW 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 296 | 312 | 434 | 479 | 515 | 489 | 414 | 322 | 459 | 346 | 297 | 189 | 411 | 206 | 253 | 742 | 303 | 186 | 159 | 119 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | cross | glassy | cross | cross | cross-off | on | cross-on | off | cross | cross-off | off | cross | cross | glassy | cross-on | cross | glassy |
High Tide | 11:04PM2.22m | 12:02PM2.03m | 11:54PM2.18m | 12:35PM2.12m | 00:43AM2.09m | 1:06PM2.17m | 1:30AM1.97m | 1:36PM2.18m | 2:19AM1.84m | 2:07PM2.15m | 3:09AM1.70m | 2:39PM2.08m | 4:05AM1.56m | |||||||
Low Tide | 5:08PM0.52m | 5:43AM-0.17m | 5:56PM0.34m | 6:20AM-0.06m | 6:42PM0.19m | 6:55AM0.10m | 7:25PM0.10m | 7:29AM0.30m | 8:08PM0.06m | 8:02AM0.52m | 8:52PM0.08m | 8:36AM0.73m | 9:38PM0.13m | |||||||
 |  | | | | | | |  |  | | | | | | | | | | | |
 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — |
 | 7:37 | — | — | 7:35 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:27 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 19 | 19 | 18 | 16 | 15 | 17 | 14 | 14 | 15 | 14 | 16 | 21 | 17 | 16 | 18 | 15 | 15 | 16 | 14 |
Feels °C | 21 | 19 | 18 | 16 | 15 | 13 | 14 | 13 | 12 | 13 | 13 | 13 | 14 | 11 | 13 | 13 | 12 | 13 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 13 | NW 7 | NW 7 | SW 17 | SW 16 | SW 16 | SSW 15 | NW 9 | SW 14 | WNW 10 | WNW 10 | WNW 8 | SW 13 | SSW 13 | SW 13 | SW 13 | NW 7 | NW 7 | NW 7 | NW 7 |
| kJ | 186 | 167 | 211 | 410 | 515 | 489 | 414 | 300 | 459 | 261 | 210 | 184 | 183 | 116 | 85 | 84 | 303 | 151 | 116 | 119 |
Swell 2 Height (m) Direction Period (s) | SW 19 | WNW 12 | SW 17 | S 11 | WNW 10 | WNW 10 | WSW 16 | SW 15 | NW 9 | SW 14 | SW 14 | SW 14 | SW 20 | SW 19 | SW 18 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 |
| kJ | 296 | 218 | 434 | 39 | 83 | 85 | 102 | 322 | 112 | 346 | 297 | 189 | 60 | 127 | 109 | 106 | 188 | 186 | 159 | 86 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SW 18 | WNW 11 | SW 12 | S 11 | S 10 | S 9 | WSW 15 | WNW 11 | WSW 13 | NW 9 | NW 9 | WSW 11 | WSW 10 | NW 15 | SW 9 | SW 12 | NW 13 | SW 12 | NW 12 |
| kJ | 66 | 312 | 103 | 5 | 63 | 46 | 40 | 144 | 146 | 35 | 70 | 42 | 12 | 10 | 54 | 3 | 40 | 44 | 37 | 37 |
Wind waves Height (m) Direction Period (s) | NW 7 | — | — | NW 7 | NNW 7 | NW 7 | NW 6 | — | S 7 | SSW 3 | — | — | NW 6 | NW 6 | NW 7 | NW 7 | — | — | — | — |
| kJ | 147 | — | — | 479 | 218 | 189 | 252 | — | 10 | 1 | — | — | 411 | 206 | 253 | 742 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 29 | 14 | 29 | 224 | 14 | 29 | 496 | 14 | 28 | 28 | 14 | 29 | 542 | 14 | 29 | 597 | 14 | 29 | 597 | 14 |
Best forecast wave conditions in South Oregon | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the State Line Surf forecast
The above surf forecast table for State Line provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at State Line can be found by selecting the local surf guide option on the grey menu. Our State Line 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 (State Line) 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 State Line 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.
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