Surf Forecasts:
Oceanside Harbor surf forecast from 9 Aug 2026:
- Best quality surf: Saturday 15 Aug, 2AM (local time) - 4ft (1.2m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 8PM (local time) - 4.5ft (1.3m), 16s period, SSW swell with 843 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 8AM (local time) - 3.5ft (1.0m), 15s period with SSW swell.
Best Forecast Surf Conditions for Oceanside Harbor this week:
The surf forecast for Oceanside Harbor over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 09) at 8AM. The primary swell is predicted to be 1.0m and 15s period with a secondary swell of 0.5m and 5s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Oceanside Harbor in the next 16 days are 1.3m 16s and forecast to arrive on Saturday (Aug 15) at 8PM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sun 9th Aug) | 3.5ft (1.0m) 15s |
| Best Surf | 2AM (Sat 15th Aug) | 4ft (1.2m) 17s |
| Most Powerful | 8PM (Sat 15th Aug) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
G’day, Rusty here. I’ve combed through the forecast for Oceanside Harbor, and I gotta tell ya, it’s gonna be a tough couple of weeks. We’ve got a long stretch of small, choppy, onshore junk, with just one brief window that looks like it could turn on. If you’re keen, you’ll need to wait.
The general vibe is small swell from the SSW and SW, with the wind blowing onshore or cross-onshore most of the time. Wave energy is low, with combined energy figures sitting in the weak to moderate range – think around 345 to 425 in the early days. Water temp is about normal for the season.
From Sunday the 9th through to Thursday the 13th morning, it’s a no-go. Swell is 2 ft to 3 ft, period around 15 seconds, and the wind is killing it. Thursday afternoon shows a slight lift to 3 ft with energy hitting 509, but it’s still marginal.
The one real standout is Saturday the 15th afternoon. We get glassy conditions – light and variable wind – with 4 ft of SW swell at a groundswell period of 16 seconds, and combined energy jumping to 784. That’s the cleanest and biggest we see the whole run. After that, it’s back to small, onshore slop from Sunday the 16th all the way to the end of the outlook on Monday the 24th. The second week is even weaker, with swell down to 2 ft and energy falling under 300.
Oceanside Harbor is a beach/jetty break that’s very consistent, so it’s a bummer when it goes this flat, but this is a long dry spell. The setup also looks more interesting for kite surfing than paddle surfing during most of this period.
Keep an eye on that Saturday afternoon – it’s your best bet.
Rusty
Short Range ForecastMostly dry. Warm (max 24°C on Sun morning, min 21°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Wed morning, min 19°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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) | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SW 20 | SW 19 | SSW 13 | SW 18 | SW 18 | SSW 17 | SW 16 | SW 16 | SW 16 | SSW 16 | SW 15 | SSW 18 | SSW 18 | SSW 17 |
Wave Graph  | |||||||||||||||||||
 kJ | 362 | 309 | 242 | 239 | 207 | 186 | 184 | 95 | 252 | 316 | 195 | 264 | 306 | 201 | 430 | 280 | 302 | 404 | 807 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | on | glassy | on | on | glassy | on | cross-on | on | on | on | glassy | on | cross-on | glassy | cross-on | cross | glassy |
High Tide | 8:30AM1.50m | 7:02PM2.36m | 9:05AM1.60m | 7:56PM2.46m | 9:39AM1.70m | 8:45PM2.49m | 10:13AM1.79m | 9:31PM2.43m | 10:46AM1.87m | 10:16PM2.30m | 11:19AM1.93m | 11:00PM2.09m | |||||||
Low Tide | 1:44AM0.15m | 12:40PM1.15m | 2:29AM0.02m | 1:40PM1.04m | 3:10AM-0.06m | 2:33PM0.92m | 3:49AM-0.05m | 3:23PM0.82m | 4:24AM0.03m | 4:11PM0.75m | 4:58AM0.17m | 5:00PM0.72m | |||||||
 |  | | | | | | | | | | | |  | |  |  | |  | |
 | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — |
 | — | — | 7:42 | — | — | 7:40 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 24 | 24 | 22 | 24 | 24 | 22 | 24 | 24 | 22 | 23 | 23 | 21 | 22 | 22 | 20 | 21 | 22 | 21 |
Feels °C | 24 | 25 | 24 | 23 | 25 | 24 | 23 | 24 | 24 | 23 | 23 | 22 | 22 | 22 | 22 | 21 | 22 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SW 18 | SSW 17 | SW 16 | SW 16 | SW 16 | SSW 16 | SW 15 | SW 15 | SSW 18 | SSW 17 |
| kJ | 362 | 309 | 242 | 239 | 207 | 139 | 137 | 95 | 252 | 316 | 195 | 264 | 306 | 201 | 430 | 280 | 217 | 404 | 807 |
Swell 2 Height (m) Direction Period (s) | W 5 | W 13 | SW 11 | SW 11 | SW 20 | SW 20 | SW 19 | SW 15 | SSW 12 | SSW 12 | SSW 12 | SW 13 | S 11 | SSW 12 | S 12 | S 11 | SSW 18 | SW 14 | SW 9 |
| kJ | 12 | 3 | 30 | 58 | 106 | 186 | 184 | 75 | 98 | 55 | 44 | 61 | 63 | 85 | 24 | 38 | 302 | 214 | 29 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SW 22 | SW 21 | SW 21 | SSW 11 | SW 16 | SW 14 | SW 18 | SW 15 | SW 13 | SW 13 | SSW 12 | W 9 | S 12 | SSW 21 | SSW 20 | S 10 | S 10 | S 9 |
| kJ | 83 | 19 | 72 | 71 | 12 | 39 | 33 | 51 | 75 | 44 | 44 | 49 | 2 | 25 | 44 | 149 | 50 | 46 | 24 |
Wind waves Height (m) Direction Period (s) | — | W 5 | W 5 | — | — | SSW 11 | — | — | — | — | — | — | — | W 6 | W 8 | — | — | SW 9 | WNW 3 |
| kJ | — | 14 | 8 | — | — | 11 | — | — | — | — | — | — | — | 3 | 11 | — | — | 21 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 68 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 29 | 68 | 68 | 0 | 68 | 68 | 0 | 32 | 32 | 0 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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Information about the Oceanside Harbor Surf forecast
The above surf forecast table for Oceanside Harbor provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Oceanside Harbor can be found by selecting the local surf guide option on the grey menu. Our Oceanside Harbor 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 (Oceanside Harbor) 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 Oceanside Harbor 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.
Oceanside Harbor is 8 km (5 miles) from the city of Oceanside. If you plan a vacation in San Diego County, look for hotels and other accommodation in Oceanside. Oceanside has rooms for a wide range of budgets as well as car hire and transport links.
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