Surf Forecasts:
The Strait surf forecast from 15 Sep 2026:
- Best quality surf: Monday 21 Sep, 8PM (local time) - 6ft (1.8m), 12s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 8PM (local time) - 6ft (1.8m), 12s period, W swell with 957 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 8AM (local time) - 1ft (0.3m), 17s period with SW swell.
Best Forecast Surf Conditions for The Strait this week:
The surf forecast for The Strait over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 8AM. The primary swell is predicted to be 0.3m and 17s period with a secondary swell of 0.5m and 8s. Another secondary swell of 0.3m and 13s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at The Strait in the next 16 days are 1.8m 12s and forecast to arrive on Monday (Sep 21) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 15th Sep) | 1ft (0.3m) 17s |
| Best Surf | 8PM (Mon 21st Sep) | 6ft (1.8m) 12s |
| Most Powerful | 8PM (Mon 21st Sep) | 6ft (1.8m) 12s |
Table - best surf conditions forecast for The Strait over the next 16 days.
Short Range ForecastMostly dry. Warm (max 20°C on Thu afternoon, min 12°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Fri afternoon, min 10°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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) | W 8 | SW 17 | SW 17 | SW 15 | W 8 | W 8 | WNW 8 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | SW 20 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | W 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 30 | 46 | 46 | 39 | 55 | 57 | 94 | 103 | 82 | 126 | 85 | 61 | 59 | 59 | 57 | 80 | 109 | 111 | 192 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-on | glassy | cross | glassy | cross | cross-off | cross | glassy | glassy | cross-off | glassy | cross | cross | glassy | cross | cross | cross-off |
High Tide | 4:03AM2.33m | 3:37PM2.88m | 4:56AM2.16m | 4:10PM2.79m | 6:00AM2.01m | 4:49PM2.67m | 7:31AM1.92m | 5:38PM2.56m | 9:21AM1.93m | 6:49PM2.47m | 10:30AM2.02m | 8:12PM2.45m | |||||||
Low Tide | 9:49PM0.60m | 9:25AM1.27m | 10:35PM0.67m | 9:55AM1.46m | 11:25PM0.78m | 10:26AM1.63m | 00:25AM0.88m | 11:05AM1.76m | 1:38AM0.93m | 12:10PM1.86m | 2:54AM0.91m | 1:57PM1.89m | 3:56AM0.83m | ||||||
 |  |  |  | | | | | | | | |  | | | | | | | |
 | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:01 | — | — |
 | — | — | 7:30 | — | — | 7:28 | — | — | 7:25 | — | — | 7:23 | — | — | 7:22 | — | — | 7:20 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 17 | 13 | 18 | 19 | 14 | 18 | 20 | 14 | 16 | 18 | 13 | 14 | 16 | 11 | 14 | 16 | 13 |
Feels °C | 14 | 13 | 15 | 12 | 17 | 18 | 14 | 17 | 20 | 13 | 16 | 18 | 13 | 13 | 14 | 10 | 12 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | W 8 | WNW 8 | W 7 | W 7 | W 8 | W 8 | WNW 8 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 7 | W 6 | SW 19 | W 5 | WNW 8 | W 8 | W 8 | W 9 |
| kJ | 30 | 19 | 28 | 39 | 55 | 57 | 94 | 103 | 82 | 126 | 85 | 54 | 11 | 59 | 4 | 22 | 30 | 44 | 192 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 17 | SW 15 | SW 15 | SW 16 | SW 16 | WSW 14 | SW 14 | WSW 14 | SW 14 | SW 20 | WNW 9 | WNW 8 | WNW 8 | SW 18 | SW 18 | SW 18 | SW 17 |
| kJ | 27 | 27 | 46 | 37 | 37 | 38 | 39 | 18 | 30 | 20 | 33 | 61 | 16 | 13 | 13 | 80 | 109 | 111 | 71 |
Swell 3 Height (m) Direction Period (s) | WSW 17 | SW 17 | SW 12 | SW 12 | WSW 12 | WSW 12 | SW 19 | SW 16 | SW 22 | WSW 21 | WSW 21 | SW 14 | SW 19 | W 5 | SW 19 | SW 13 | SW 13 | SW 13 | SW 13 |
| kJ | 29 | 46 | 24 | 23 | 14 | 14 | 15 | 10 | 18 | 45 | 45 | 33 | 59 | 4 | 57 | 7 | 7 | 7 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 3 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 15 | 15 | 15 | 15 | 15 | 0 | 15 | 0 | 137 | 0 | 0 | 0 | 15 | 30 | 729 | 0 | 228 | 228 | 0 |
Best forecast wave conditions in Washington State | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our The Strait surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the The Strait Surf forecast
The above surf forecast table for The Strait provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Strait can be found by selecting the local surf guide option on the grey menu. Our The Strait 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 (The Strait) 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 The Strait 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.
The Strait is 76 km (47 miles) from Duncan. If you plan a vacation in Washington State, look for hotels and other accommodation in Duncan. Duncan has rooms for a wide range of budgets as well as car hire and transport links.
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