Surf Forecasts:
Oceanside Harbor surf forecast from 29 Aug 2026:
- Best quality surf: Thursday 3 Sep, 11PM (local time) - 4.5ft (1.3m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 8PM (local time) - 4.5ft (1.3m), 16s period, SSW swell with 788 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 8PM (local time) - 4.5ft (1.3m), 16s 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 Saturday (Aug 29) at 8PM. The primary swell is predicted to be 1.3m and 16s period with a secondary swell of 0.6m and 6s. 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 29) 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+) | 8PM (Sat 29th Aug) | 4.5ft (1.3m) 16s |
| Best Surf | 11PM (Thu 3rd Sep) | 4.5ft (1.3m) 14s |
| Most Powerful | 8PM (Sat 29th Aug) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s on the menu for Oceanside Harbor.
Alright, let’s be straight with you. For the next week or so, the surf is going to be flat and frustrating. The water is running much warmer than normal for this time of year, a solid 9° warmer than average, so at least you won't be cold while you're sitting there waiting. The harbor setup here is a beach/jetty, and we’re mostly looking at choppy, messy conditions with cross-onshore winds. That long period groundswell from the SSW is carrying some decent energy in the low hundreds, but with those onshore winds and short period on some days, it’s just not going to shape up. It’s flat, choppy, and honestly, not worth a paddle for most of this stretch.
The first flicker of anything happens on Sunday, September 6th. The morning is still soft with a 3ft SSW swell and very light wind, but it’s the afternoon that catches my eye. The wind goes glassy – dead calm – with a 3ft SSW groundswell. This is the one true standout in the near term. The combined energy is a moderate 651, and while it’s not huge, those clean, glassy conditions will make it rideable and fun for a decent longboard session. It won’t be bombing, but for pure, clean fun, that’s your window.
After that, the surf picks up a bit in size, but the quality drops off. Monday the 7th sees a 5ft to 6ft SSW swell, but the cross-onshore wind messes it up. Then we get a big pulse for Tuesday, September 8th. The swell jumps to 12ft by the afternoon with a very strong energy reading of 3123. But that is way too big for this break, especially with the short period at 12 seconds. That’s expert-only territory, and the wind is still cross-onshore. The setup looks far more interesting for kite surfing than paddle surfing at that point.
The rest of the second week drops back into poor, choppy groundswell and small, weak swell. There’s nothing else worth chasing after that one glassy Sunday. It's a tough outlook, but that's how it goes sometimes.
Keep your eyes on the wind forecasts, because if that glassy window shifts, that's the only shot we've got.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sat morning, min 21°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Wed morning, min 20°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 12 | SSW 13 | SSW 13 | S 11 | S 12 | SSW 12 | SSW 12 | SSW 13 | SSW 12 | SSW 16 | SSW 14 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 692 | 627 | 759 | 537 | 478 | 389 | 325 | 235 | 160 | 156 | 260 | 371 | 373 | 361 | 648 | 517 | 452 | 621 | 537 | 659 | 620 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | on | glassy | on | cross-on | glassy | cross-on | cross | cross | cross-on | cross-on | glassy | on | cross-on | glassy | cross-on | on | on |
High Tide | 10:39AM1.90m | 10:30PM1.96m | 11:04AM1.97m | 11:10PM1.79m | 11:32AM2.02m | 11:57PM1.60m | 12:06PM2.03m | 00:58AM1.39m | 12:48PM2.03m | 2:40AM1.23m | 1:48PM2.00m | 6:05AM1.25m | 3:13PM1.98m | ||||||||
Low Tide | 4:31PM0.69m | 4:46AM0.49m | 5:13PM0.65m | 5:10AM0.64m | 6:02PM0.64m | 5:34AM0.79m | 7:03PM0.65m | 5:58AM0.95m | 8:23PM0.65m | 6:24AM1.10m | 10:07PM0.59m | 7:01AM1.25m | 11:37PM0.45m | ||||||||
 | |  | | | | | | | |  |  | | | | | | | | | | |
 | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 7:19 | — | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:12 | — | — | 7:10 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 25 | 25 | 25 | 22 | 23 | 23 | 22 | 24 | 24 | 23 | 25 | 25 | 23 | 24 | 24 | 22 | 22 | 22 | 21 |
Feels °C | 29 | 27 | 28 | 24 | 24 | 23 | 22 | 22 | 22 | 23 | 21 | 21 | 24 | 22 | 21 | 23 | 22 | 22 | 20 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | W 7 | SSW 14 | S 12 | S 11 | S 11 | S 11 | S 12 | SSW 12 | SSW 12 | SSW 13 | SSW 12 | SSW 12 | SSW 14 | SSW 12 | SSW 16 | SSW 16 |
| kJ | 692 | 627 | 759 | 537 | 478 | 99 | 325 | 235 | 160 | 149 | 260 | 371 | 373 | 361 | 648 | 517 | 412 | 621 | 403 | 659 | 620 |
Swell 2 Height (m) Direction Period (s) | W 6 | W 6 | W 7 | W 8 | W 8 | SSW 14 | W 7 | SSW 13 | SSW 13 | SSW 13 | W 5 | WNW 5 | SW 16 | SW 16 | W 5 | W 6 | SSW 16 | SSW 18 | SSW 17 | SSW 12 | W 6 |
| kJ | 29 | 28 | 80 | 153 | 89 | 389 | 55 | 158 | 156 | 156 | 14 | 35 | 214 | 208 | 11 | 25 | 452 | 408 | 537 | 231 | 53 |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SW 12 | S 8 | SSE 13 | S 12 | SSE 12 | S 13 | SSW 19 | W 5 | W 5 | SW 18 | SW 18 | W 9 | SSW 12 | S 15 | SSW 19 | S 13 | W 5 | W 7 | W 6 | SW 11 |
| kJ | 21 | 37 | 10 | 33 | 44 | 46 | 163 | 35 | 14 | 9 | 80 | 111 | 2 | 119 | 17 | 145 | 14 | 21 | 42 | 28 | 117 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 6 | — | — | — | — | W 5 | W 3 | — | — | W 6 | — | — | W 6 | W 6 |
| kJ | — | — | — | — | — | — | — | 25 | — | — | — | — | 7 | 4 | — | — | 25 | — | — | 52 | 88 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 68 | 68 | 34 | 68 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 32 | 68 | 68 | 0 | 68 | 149 | 0 | 68 | 1342 | 4 |
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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