Surf Forecasts:
Seaside Cove surf forecast from 17 Aug 2026:
- Best quality surf: Monday 17 Aug, 2AM (local time) - 2ft (0.6m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 8PM (local time) - 4.5ft (1.3m), 12s period, WNW swell with 422 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 2AM (local time) - 2ft (0.6m), 16s period with SW swell.
Best Forecast Surf Conditions for Seaside Cove this week:
The surf forecast for Seaside Cove over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 2AM. The primary swell is predicted to be 0.6m and 16s period with a secondary swell of 0.5m and 9s. Another secondary swell of 0.4m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Seaside Cove in the next 16 days are 1.3m 12s and forecast to arrive on Wednesday (Aug 19) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 13s period and expected on Saturday (Aug 22) at 2AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 17th Aug) | 2ft (0.6m) 16s |
| Best Surf | 2AM (Mon 17th Aug) | 2ft (0.6m) 16s |
| Most Powerful | 8PM (Wed 19th Aug) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Seaside Cove over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at the waves ahead for our stretch of coast. Let's be honest, the next couple of weeks are a bit of a mixed bag, so we gotta pick our moments.
We're looking at a long stretch of small, weak surf for most of the first week. The ocean's got a bit of energy kicking around, but nothing that's gonna get the heart pumping. The set-up is mostly cross-onshore winds, which is gonna chop things up and keep it messy. The best we can say is that it'll be a good time for a beginner lesson or a longboard cruise at Seaside Cove, but it's not going to be a day for proper turns.
The water is sitting at about 58°, which is a bit colder than normal for this time of year. So a decent spring suit is the way to go.
Alright, now for the standout. If you can wait, hang tight for the morning of Sunday, the 23rd of August. That's our glimmer of hope. The wind goes glassy early with a slight air, and while the swell is still a small 0.9m from the WNW, that combo of clean, smooth conditions will make it feel way better than it should. The combined energy is weak at 124, but you won't care when you're surfing a mirror. It won't be an epic day of size, but it'll be the cleanest, most user-friendly session in the whole window.
Everything after that remains ordinary. We get a bump in swell around Thursday the 27th, with waves hitting 1.6m from the NW and the combined energy jumping up to 783, but the wind is generally a cross-shore at 15 km/h, which leaves a lot of cross-chop on the face. It's there, but it's not inviting. That size is getting into the zone where it's not fun for a beginner either. By the 31st of August, we see 1.5m swell with a long 11-second period from the W, but again the cross-onshore wind is going to mess with the shape.
So, in short: there's barely anything to write home about. The real, proper clean session is that one glassy Sunday morning the 23rd. The rest is a waiting game. Don't hold your breath for anything else.
- Rusty
Short Range ForecastMostly dry. Very mild (max 17°C on Sun afternoon, min 12°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Wed afternoon, min 13°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | W 12 | WNW 12 | WNW 12 | W 12 | WNW 11 | WNW 11 | WNW 11 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 93 | 91 | 157 | 139 | 132 | 132 | 132 | 132 | 190 | 236 | 361 | 274 | 198 | 191 | 240 | 158 | 144 | 119 | 94 | 111 | 125 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross | cross-on | glassy | on | cross-on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | glassy | on | cross-on | cross-off | cross-on | cross-on | cross |
High Tide | 3:48PM1.71m | 4:09AM1.41m | 4:23PM1.69m | 5:09AM1.26m | 5:01PM1.64m | 6:21AM1.14m | 5:44PM1.58m | 7:53AM1.08m | 6:35PM1.53m | 9:31AM1.09m | 7:39PM1.51m | 10:42AM1.15m | 8:45PM1.51m | ||||||||
Low Tide | 10:46AM0.06m | 11:29PM0.11m | 11:21AM0.16m | 00:23AM0.11m | 11:57AM0.25m | 1:22AM0.12m | 12:37PM0.34m | 2:28AM0.12m | 1:28PM0.40m | 3:40AM0.12m | 2:41PM0.44m | 4:47AM0.10m | 4:06PM0.45m | ||||||||
 |  |  | | | | | | |  | |  | | | | | | | | | | |
 | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — |
 | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:17 | — | — | 8:15 | — | — | 8:14 | — | — | 8:12 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 14 | 16 | 16 | 14 | 16 | 17 | 16 | 16 | 17 | 15 | 17 | 17 | 15 | 16 | 17 | 16 | 16 | 17 | 15 |
Feels °C | 14 | 15 | 12 | 15 | 14 | 14 | 16 | 16 | 17 | 16 | 17 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 14 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | SW 16 | SW 15 | WNW 8 | WNW 6 | WNW 6 | WNW 7 | W 12 | WNW 12 | WNW 12 | W 12 | WNW 11 | WNW 11 | WNW 11 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 8 |
| kJ | 41 | 41 | 157 | 139 | 57 | 40 | 34 | 90 | 190 | 236 | 361 | 274 | 198 | 191 | 240 | 158 | 144 | 119 | 94 | 111 | 125 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | W 9 | W 9 | SW 14 | SW 14 | SW 14 | W 13 | WNW 7 | WNW 6 | SW 16 | WNW 7 | WNW 7 | WNW 7 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 18 |
| kJ | 93 | 91 | 40 | 38 | 132 | 132 | 132 | 92 | 57 | 33 | 89 | 84 | 81 | 40 | 73 | 72 | 72 | 46 | 27 | 27 | 86 |
Swell 3 Height (m) Direction Period (s) | SW 13 | SW 13 | NW 4 | NW 4 | W 13 | W 11 | W 7 | SW 14 | SW 14 | SW 14 | SW 13 | SW 16 | SW 15 | SW 15 | WSW 19 | SW 20 | W 13 | SW 18 | WSW 18 | WSW 18 | SW 13 |
| kJ | 62 | 63 | 4 | 7 | 3 | 10 | 17 | 132 | 65 | 46 | 26 | 86 | 79 | 75 | 36 | 15 | 14 | 49 | 30 | 31 | 27 |
Wind waves Height (m) Direction Period (s) | — | NW 6 | NW 4 | — | NW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 6 | 6 | — | 19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 107 | 662 | 0 | 107 | 463 | 0 | 104 | 264 | 0 | 104 | 104 | 0 | 242 | 107 | 0 | 99 | 104 | 0 | 66 | 104 | 25 |
Best forecast wave conditions in North Oregon | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Seaside Cove Surf forecast
The above surf forecast table for Seaside Cove provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Seaside Cove can be found by selecting the local surf guide option on the grey menu. Our Seaside Cove 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 (Seaside Cove) 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 Seaside Cove 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.
Seaside Cove is 24 km (15 miles) from Astoria. If you plan a vacation in North Oregon, look for hotels and other accommodation in Astoria. Astoria has rooms for a wide range of budgets as well as car hire and transport links.
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