Surf Forecasts:
Oceanside Harbor surf forecast from 15 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 3ft (0.9m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Monday 21 Sep, 5PM (local time) - 3.5ft (1.0m), 17s period, SW swell with 553 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 8PM (local time) - 1.5ft (0.4m), 20s 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 Tuesday (Sep 15) at 8PM. The primary swell is predicted to be 0.4m and 20s period with a secondary swell of 0.5m and 16s. Another secondary swell of 0.5m and 9s is also forecast. 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 1.0m 17s and forecast to arrive on Monday (Sep 21) at 5PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Tue 15th Sep) | 1.5ft (0.4m) 20s |
| Best Surf | 5AM (Thu 17th Sep) | 3ft (0.9m) 16s |
| Most Powerful | 5PM (Mon 21st Sep) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
Look, I’m gonna be straight with you – Oceanside Harbor is not the place to be for the next couple of weeks. We’ve got a long stretch of marginal to poor surf, and the wind is just not playing ball. For the first few days, we’re looking at small, weak swells with cross-onshore winds messing up the surface. It’s a pretty grim start.
On Tuesday morning, September 15th, we’ve got a tiny 2ft SW swell, but it’s coming in at 16 seconds, so that’s a long-period groundswell, which usually means more shape. But the wind is a cross-on from the south at 9 mph, and the energy is weak at 255. The water is sitting at a very unusual 74°, which is 6° warmer than normal for this time of year – that’s a big anomaly. Still, the surf is flat and choppy. Not worth paddling out.
It doesn’t get any better for a while. The swell stays small, mostly between 2ft and 3ft, and the wind is almost always cross-on. There’s a bit of a pulse showing up on Friday morning, September 18th, with the combined energy climbing to 501, but it’s still a 2ft SW swell with the same cross-on wind. It’s not clean, and it’s not big. A real fisherman’s weekend, not a surfer’s.
There’s a small window on the morning of Saturday, September 19th, where the energy is moderate (503) and the swell is a bit more organised from the SW at 3ft, but again, it’s cross-on wind. Just not worth getting excited about. The whole first week is a bust.
We roll into the second week, and it’s pretty much the same story. The swell stays in the 2ft to 3ft range, the wind is from the west or southwest at 6 to 9 mph, and it’s cross-on. The energy drops off a cliff by Sunday, September 27th, with a 3ft swell and only 249 in the tank. There’s a moment on Sunday morning with the wind swinging onshore light, but the swell is tiny and the period has dropped to 12 seconds. It’s a no-go.
Honestly, there’s not a single standout day in this whole 16-day window. The swell is too small, the wind is wrong, and the break is an exposed beach/jetty that just can’t handle it. If you’re set on getting wet, wait for a better forecast. This one’s a washout.
Rusty
Short Range ForecastMostly dry. Warm (max 21°C on Tue morning, min 18°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Fri afternoon, min 19°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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 | SSW 20 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 161 | 127 | 114 | 390 | 347 | 402 | 288 | 275 | 405 | 303 | 303 | 234 | 379 | 375 | 375 | 455 | 522 | 499 | 470 | 553 | 443 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross | on | cross-on | glassy | cross-on | cross-on | glassy | on | cross-on | glassy | on | cross-on | glassy | cross-on | on | cross-on | cross-on | on | glassy |
High Tide | 11:53AM1.99m | 1:22AM1.32m | 12:27PM1.90m | 3:52AM1.22m | 1:13PM1.80m | 2:35PM1.72m | 8:13AM1.44m | 4:22PM1.72m | 7:53AM1.50m | 5:36PM1.80m | 8:01AM1.57m | 6:27PM1.89m | |||||||||
Low Tide | 7:08PM0.64m | 5:37AM1.11m | 8:22PM0.72m | 5:04AM1.22m | 10:05PM0.73m | 11:35PM0.67m | 10:11AM1.43m | 00:29AM0.57m | 11:54AM1.34m | 1:06AM0.48m | 12:41PM1.21m | 1:35AM0.42m | |||||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — |
 | — | 6:55 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:49 | — | — | 6:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 21 | 21 | 19 | 20 | 21 | 19 | 21 | 22 | 20 | 21 | 22 | 21 | 22 | 21 | 20 | 21 | 21 | 20 |
Feels °C | 21 | 21 | 21 | 21 | 20 | 19 | 20 | 20 | 19 | 21 | 21 | 20 | 21 | 22 | 22 | 22 | 21 | 22 | 20 | 20 | 22 |
Swell 1 Height (m) Direction Period (s) | W 9 | SW 16 | SW 16 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SW 19 | SSW 13 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | W 7 | SW 17 | SW 17 | SW 16 |
| kJ | 57 | 122 | 88 | 390 | 347 | 402 | 288 | 275 | 405 | 183 | 303 | 139 | 379 | 375 | 375 | 455 | 522 | 71 | 470 | 553 | 443 |
Swell 2 Height (m) Direction Period (s) | SW 16 | W 9 | W 8 | W 6 | W 6 | SSW 9 | SW 21 | SW 21 | SW 21 | SW 19 | SSW 13 | SW 19 | W 6 | W 6 | W 6 | W 7 | W 7 | SW 17 | W 7 | W 6 | W 6 |
| kJ | 161 | 39 | 21 | 11 | 6 | 28 | 160 | 162 | 156 | 303 | 141 | 234 | 25 | 26 | 25 | 58 | 56 | 499 | 56 | 28 | 17 |
Swell 3 Height (m) Direction Period (s) | SW 12 | SSW 20 | SSW 18 | S 9 | S 9 | S 13 | SSW 8 | S 12 | NW 11 | W 6 | S 11 | W 5 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | S 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 |
| kJ | 37 | 127 | 114 | 15 | 14 | 30 | 14 | 25 | 5 | 15 | 21 | 13 | 99 | 96 | 85 | 56 | 76 | 50 | 48 | 46 | 26 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 8 | — | — | W 6 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 24 | — | — | 15 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 116 | 2 | 68 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 5 | 68 | 68 | 0 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 Oceanside Harbor 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 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.
Nearest