Surf Forecasts:
Oceanside Harbor surf forecast from 29 Aug 2026:
- Best quality surf: Friday 4 Sep, 5AM (local time) - 3.5ft (1.0m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 2AM (local time) - 4.5ft (1.3m), 17s period, SSW swell with 932 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 11PM (local time) - 3.5ft (1.0m), 17s 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 Friday (Aug 28) at 11PM. The primary swell is predicted to be 1.0m and 17s period with a secondary swell of 0.6m and 8s. 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 17s and forecast to arrive on Saturday (Aug 29) at 2AM. 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+) | 11PM (Fri 28th Aug) | 3.5ft (1.0m) 17s |
| Best Surf | 5AM (Fri 4th Sep) | 3.5ft (1.0m) 17s |
| Most Powerful | 2AM (Sat 29th Aug) | 4.5ft (1.3m) 17s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Right, listen up. Rusty here, looking at the next couple of weeks for us. We’ve only got the one spot to look at, so let’s get into it.
Alright, straight up, this 16-day window is a tough one for us. There’s no real standout, classic day on the cards. We’ll see some waves, but you’ll have to work for them and pick your moments.
The first chance is this Friday afternoon, August 28th. Oceanside Harbor will see a long-period, 2ft SSW groundswell rolling in with a period of 19 seconds. The water temp is a toasty 75°F, which is much warmer than normal for the time of year. That long-period swell will make for some nice, lined-up waves, but being a beach/jetty setup, it might break a little too straight. The wind is a light onshore at 6 mph, so it’ll be okay but not glassy. The combined wave energy is moderate at 545.
Saturday the 29th and Sunday the 30th look bleak. The swell bumps up to a miserable 4ft, but the wind turns cross-onshore at 9 mph, making it choppy and messy. The period drops through the weekend, losing that long-period quality. Scores are low, and the wave comment is “marginal” or “poor.” Not worth getting wet for.
There’s a big gap of several days with nothing really worthwhile. Monday the 31st through the end of the first week of September is mostly poor conditions with onshore or cross-onshore winds. Swells are small and weak, with energy values dropping into the hundreds. Not good.
We get a slight uptick on Thursday, September 3rd with a 5ft to 5ft swell, but it’s paired with cross-onshore winds at 9 to 12 mph. That makes it a choppy mess. The beach setup and onshore wind mean it’s honestly more interesting for kite surfing than paddle surfing that day.
Friday, September 4th has a bit more energy – 1024 on the combined scale – but it’s still a 3ft swell with light onshore wind. Marginal at best.
The one faint glimmer comes on Friday, September 11th. Early that morning, we get glassy conditions with an Easterly breeze at just 3 mph. The swell is a 3ft SW groundswell with a period of 16 seconds. The combined energy is 397, so weak, but that glassy wind is the only truly clean window in the entire outlook. If you’re desperate, that dawn patrol on the 11th is your only real shot at something half-decent. But don’t expect much.
Other than that, the pattern is consistent: small swell, nasty wind, and poor to marginal surf. It’s a tough run for Oceanside Harbor.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sat morning, min 21°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Wed afternoon, min 21°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | ||||||||||||||
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 19 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | S 12 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 12 | SSW 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 325 | 932 | 692 | 627 | 759 | 537 | 478 | 389 | 261 | 226 | 154 | 151 | 154 | 319 | 594 | 476 | 396 | 904 | 739 | 543 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | cross-on | cross-on | cross-on | on | on | glassy | on | cross-on | cross-off | cross-on | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | glassy |
High Tide | 9:53PM2.09m | 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 | ||||||||
Low Tide | 3:51PM0.76m | 4:23AM0.38m | 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 | |||||||
 |  | | | | | | | | | | | |  |  |  | | | | | |
 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — |
 | 7:20 | — | — | 7:19 | — | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:12 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 27 | 27 | 24 | 25 | 24 | 22 | 23 | 23 | 22 | 24 | 25 | 23 | 24 | 26 | 24 | 26 | 26 | 24 |
Feels °C | 28 | 29 | 28 | 27 | 27 | 25 | 23 | 23 | 23 | 22 | 22 | 23 | 22 | 22 | 24 | 23 | 23 | 24 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | S 9 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | W 7 | SSW 14 | S 12 | SSW 13 | SSW 13 | S 11 | S 12 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 12 | SSW 12 |
| kJ | 73 | 932 | 692 | 627 | 759 | 537 | 478 | 102 | 261 | 180 | 154 | 151 | 112 | 319 | 594 | 476 | 396 | 904 | 739 | 543 |
Swell 2 Height (m) Direction Period (s) | SW 14 | S 8 | W 7 | W 7 | W 8 | W 8 | W 7 | SSW 14 | W 7 | SSW 14 | S 11 | S 11 | SSW 13 | W 5 | SSW 16 | SW 16 | SSW 12 | W 5 | S 13 | SSW 18 |
| kJ | 147 | 33 | 35 | 61 | 110 | 146 | 85 | 389 | 55 | 226 | 85 | 82 | 154 | 16 | 179 | 264 | 293 | 8 | 14 | 404 |
Swell 3 Height (m) Direction Period (s) | SSW 19 | W 6 | SSW 8 | SW 12 | S 8 | SSE 13 | S 12 | SSE 12 | S 13 | SSW 19 | W 5 | SW 18 | SW 18 | SW 18 | W 9 | — | W 4 | SSW 20 | W 12 | W 5 |
| kJ | 325 | 13 | 21 | 36 | 11 | 33 | 44 | 46 | 163 | 35 | 13 | 50 | 80 | 111 | 2 | — | 9 | 75 | 3 | 13 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 6 | — | W 5 | W 5 | — | W 5 | W 5 | — | — | W 6 | — |
| kJ | — | — | — | — | — | — | — | — | — | 36 | — | 14 | 19 | — | 8 | 12 | — | — | 17 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 68 | 0 | 68 | 68 | 68 | 68 | 171 | 0 | 68 | 68 | 0 | 68 | 68 | 4 | 52 | 68 | 32 | 68 | 68 | 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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