Surf Forecasts:
Seaside Cove surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 11PM (local time) - 4.5ft (1.3m), 12s period, WNW swell with glassy 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★+): Tuesday 18 Aug, 8AM (local time) - 2ft (0.6m), 14s 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 Tuesday (Aug 18) at 8AM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.5m and 6s. The wind is predicted to be glassy 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-shore 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+) | 8AM (Tue 18th Aug) | 2ft (0.6m) 14s |
| Best Surf | 11PM (Wed 19th Aug) | 4.5ft (1.3m) 12s |
| 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. Let’s have a look at the next couple of weeks at Seaside Cove. It’s a real mix of beach, reef, and point setup, so there’s potential, but we’re going to have to be patient. The water temp is sitting about average for this time of year.
Right now, we’re looking at a pretty quiet start. The first few days are a bit of a write-off, with the surf struggling to get going. Tuesday morning, the 18th of August, we’ve got a tiny 2ft swell from the SW, but the wind is onshore and conditions are just poor. You’d be better off leaving the board in the car. The energy is weak (168) and it just doesn’t look inviting.
We do see a little bump on Wednesday the 19th. The swell picks up to 3ft, then 4ft in the afternoon from the WNW, with a period of 12 seconds – that’s a decent groundswell. The energy is moderate (270-530). But the wind is cross-onshore, putting a bit of a ripple on the face. It’s marginal at best, but if you’re desperate, the afternoon might offer a few fun ones. The same goes for Thursday the 20th: 4ft from the WNW, but that cross-onshore breeze keeps things from being clean.
We hit a real dry spell from Friday the 21st all the way through to the end of August. The swell drops off, the periods get short and choppy, and the wind stays messy. You’ll see a mix of cross-onshore and cross-shore winds, with wave heights bouncing between 1ft and 3ft. The energy is mostly weak to moderate (74-431), but the quality is poor. It’s a solid week of not much to write home about. The surf just isn’t cooperating.
Now, looking ahead to the first couple of days of September, there’s a glimmer of hope. On Tuesday the 1st of September, we see a 4ft to 4ft swell from the W and WNW, with a period of 8-9 seconds. The wind is a clean cross-shore from the north. The energy is moderate (327-406), but it’s still a bit short-period and the conditions are described as marginal. The cross-shore wind will keep it from being a total mess, but it’s not the standout session we’re all hoping for. Wednesday the 2nd looks similar, with 4ft from the WNW and cross-shore wind.
Honestly, for the dedicated surfer, there aren’t any true standouts in this 16-day window. The best bet would be to keep an eye on the afternoon of Wednesday the 19th of August, where the swell has a bit of size and a solid period, even if the wind isn’t perfect. It’s the closest thing to a decent wave we’ve got. The rest of the period is a waiting game. For a spot that’s consistent, this is a disappointing run, but it won’t last forever. The forecasts can change, so stay tuned.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Wed afternoon, min 13°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Fri afternoon, min 12°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 14 | SW 14 | W 12 | WNW 12 | W 12 | WNW 12 | WNW 11 | WNW 11 | WNW 8 | WNW 8 | WNW 10 | WNW 9 | WNW 8 | WNW 8 | SW 18 | NW 6 | NW 6 | SW 18 | WSW 18 | WSW 18 | SW 17 |
Wave Graph | |||||||||||||||||||||
132 | 132 | 190 | 236 | 270 | 422 | 198 | 302 | 194 | 157 | 166 | 131 | 144 | 172 | 86 | 35 | 37 | 86 | 124 | 221 | 148 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | cross-on | cross-on | glassy | on | on | cross | cross-on | cross-on | cross-off | cross-on | cross-on | cross-off | cross | cross | cross | cross | cross | cross |
High Tide | 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 | 11:27AM1.21m | 9:45PM1.56m | 12:00PM1.26m | 10:35PM1.61m | ||||||||
Low Tide | 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 | 5:43AM0.06m | 5:14PM0.42m | 6:28AM0.03m | 6:06PM0.39m | ||||||||
6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | |
— | 8:19 | — | — | 8:17 | — | — | 8:15 | — | — | 8:14 | — | — | 8:12 | — | — | 8:10 | — | — | 8:08 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 15 | 16 | 17 | 15 | 16 | 17 | 14 | 16 | 17 | 15 | 16 | 16 | 15 | 17 | 17 | 14 | 16 | 17 | 14 |
Feels °C | 15 | 15 | 16 | 16 | 16 | 14 | 15 | 17 | 15 | 15 | 16 | 14 | 15 | 16 | 15 | 15 | 14 | 12 | 14 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | NW 6 | WNW 7 | W 12 | WNW 12 | W 12 | WNW 12 | WNW 11 | WNW 11 | WNW 8 | WNW 8 | WNW 10 | WNW 9 | WNW 8 | WNW 8 | WNW 7 | NW 6 | WNW 8 | NW 6 | NW 5 | WSW 18 | WNW 7 |
19 | 61 | 190 | 236 | 270 | 422 | 198 | 302 | 194 | 157 | 166 | 131 | 144 | 172 | 61 | 34 | 22 | 33 | 13 | 221 | 46 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | W 13 | WNW 7 | WNW 6 | WNW 6 | SW 16 | WNW 7 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | W 9 | W 8 | WSW 16 | SW 18 | WSW 18 | WNW 7 | SW 17 |
132 | 92 | 57 | 33 | 28 | 86 | 41 | 104 | 73 | 72 | 72 | 46 | 27 | 27 | 38 | 35 | 25 | 86 | 124 | 10 | 148 | |
Swell 3 Height (m) Direction Period (s) | W 7 | SW 14 | SW 14 | SW 14 | SW 16 | W 21 | SW 15 | W 15 | WSW 19 | W 13 | W 13 | SW 18 | WSW 18 | WSW 18 | SW 18 | SW 13 | WSW 20 | WNW 8 | WNW 7 | W 10 | WSW 18 |
17 | 132 | 65 | 46 | 89 | 9 | 109 | 4 | 36 | 14 | 14 | 49 | 30 | 31 | 86 | 27 | 37 | 20 | 18 | 8 | 104 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 6 | — | NW 5 | NW 5 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 31 | — | 28 | 14 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 104 | 264 | 0 | 104 | 242 | 0 | 104 | 409 | 25 | 66 | 104 | 0 | 104 | 155 | 0 | 99 | 469 | 138 | 99 | 469 | 138 |
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.











