Surf Forecasts:
Seaside Cove surf forecast from 13 Aug 2026:
- Best quality surf: Friday 14 Aug, 5AM (local time) - 3.5ft (1.0m), 7s period, WNW swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 8PM (local time) - 3.5ft (1.0m), 12s period, W swell with 274 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 5AM (local time) - 1.5ft (0.4m), 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 Thursday (Aug 13) at 5AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m and 16s. 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 1.0m 12s and forecast to arrive on Wednesday (Aug 19) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 13th Aug) | 1.5ft (0.4m) 16s |
| Best Surf | 5AM (Fri 14th Aug) | 3.5ft (1.0m) 7s |
| Most Powerful | 8PM (Wed 19th Aug) | 3.5ft (1.0m) 12s |
Table - best surf conditions forecast for Seaside Cove over the next 16 days.
The Lowdown
Alright, Rusty here with the imperial take on the same stretch at Seaside Cove.
First off, from Wednesday the 12th through to around the 21st of August, it’s pretty grim. Swell is tiny – 1ft to 2ft – coming from the SW with short periods. The wind is mostly cross-onshore or cross-shore, so expect chop and crumble. Combined energy is low-to-moderate (148 to 491). Every session is marked as poor or marginal. Water temp at the start is 59°, which is typical for this time of year. Nothing exciting there.
There’s a major dry spell. The first real hope doesn’t show up until Wednesday the 26th of August. That’s almost two weeks of flatness.
The best session by far is Thursday the 27th of August. That morning, Seaside Cove sees a 7ft WNW swell with a 10-second period. Combined energy hits 864 (moderate-to-strong wind and wave energy). Winds are light cross-onshore at 10 km/h – not glassy, but decent. That afternoon the swell settles to 6ft with a cross-shore breeze from the N at 15 km/h. This is the one to aim for. The swell direction (WNW) is close to the break’s favored NW direction, and the period is solid – not too long, not too short.
This size is firmly in expert territory. For beginners, anything over about 5ft is too much, so this is not a learner day. The period is short enough that it shouldn’t make the waves too doughy, and the wind holds up enough to keep it surfable.
Crowds? Seaside Cove can be “sometimes” busy, so expect a few heads out on a good day like this.
There’s a warm-up on Wednesday the 26th: 5ft from the NW with a 9-second period, light cross-shore wind, and energy of 479. That’s a good session, but Thursday is the standout.
Bottom line: wait it out until Wednesday the 26th, and make sure you’re out for Thursday the 27th of August. The rest is a bust.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Thu morning, min 13°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Tue afternoon, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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) | WNW 7 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | W 10 | SW 18 | SW 14 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | W 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 93 | 67 | 91 | 125 | 87 | 84 | 75 | 74 | 111 | 102 | 93 | 91 | 157 | 139 | 132 | 132 | 132 | 132 | 153 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | on | cross-on | glassy | on | on | glassy | cross-on | cross-on | cross-off | cross-on | cross-on | cross | cross-on | cross-on | glassy |
High Tide | 00:44AM1.94m | 2:03PM1.62m | 1:35AM1.86m | 2:38PM1.67m | 2:25AM1.73m | 3:13PM1.71m | 3:16AM1.58m | 3:48PM1.71m | 4:09AM1.41m | 4:23PM1.69m | 5:09AM1.26m | 5:01PM1.64m | |||||||
Low Tide | 8:07PM0.23m | 8:54AM-0.15m | 8:58PM0.18m | 9:33AM-0.09m | 9:48PM0.14m | 10:10AM-0.02m | 10:38PM0.12m | 10:46AM0.06m | 11:29PM0.11m | 11:21AM0.16m | 00:23AM0.11m | 11:57AM0.25m | 1:22AM0.12m | ||||||
 | |  |  | | | | | | | | |  | | | | | |  | |
 | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — |
 | 8:29 | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 17 | 17 | 15 | 17 | 17 | 15 | 16 | 16 | 15 | 16 | 16 | 14 | 16 | 16 | 15 | 16 | 17 | 15 |
Feels °C | 14 | 16 | 16 | 14 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 13 | 15 | 15 | 14 | 15 | 17 | 15 |
Swell 1 Height (m) Direction Period (s) | WNW 7 | NW 7 | NW 7 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | W 10 | W 10 | W 10 | W 9 | W 9 | SW 16 | W 9 | W 8 | WNW 6 | WNW 7 | WNW 7 | W 12 |
| kJ | 93 | 47 | 64 | 88 | 73 | 53 | 40 | 71 | 72 | 68 | 58 | 41 | 157 | 56 | 50 | 75 | 88 | 114 | 153 |
Swell 2 Height (m) Direction Period (s) | SW 17 | W 7 | W 6 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | W 9 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | WNW 6 |
| kJ | 75 | 33 | 21 | 125 | 87 | 84 | 75 | 74 | 74 | 102 | 93 | 91 | 40 | 139 | 132 | 132 | 132 | 132 | 35 |
Swell 3 Height (m) Direction Period (s) | W 13 | SW 16 | SW 16 | W 12 | W 11 | W 11 | W 10 | NW 7 | SW 18 | SW 18 | SW 13 | SW 13 | WNW 4 | NW 5 | W 13 | W 8 | W 8 | WNW 14 | SW 14 |
| kJ | 29 | 67 | 91 | 11 | 21 | 21 | 18 | 18 | 111 | 78 | 62 | 63 | 3 | 1 | 3 | 12 | 10 | 64 | 64 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NW 6 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1140 | 25 | 104 | 1016 | 25 | 104 | 409 | 0 | 104 | 409 | 0 | 469 | 662 | 0 | 34 | 107 | 25 | 34 | 1017 |
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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