
Surf Forecasts:
Oceanside Harbor surf forecast from 4 Sep 2026:
- Best quality surf: Sunday 6 Sep, 11AM (local time) - 6ft (1.9m), 14s period, S swell with offshore winds.
- Most powerful swell: Monday 7 Sep, 5AM (local time) - 7ft (2.1m), 14s period, SSW swell with 1,728 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 5AM (local time) - 3.5ft (1.0m), 18s 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 (Sep 04) at 5AM. The primary swell is predicted to be 1.0m and 18s period with a secondary swell of 0.7m and 11s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Oceanside Harbor in the next 16 days are 2.1m 14s and forecast to arrive on Monday (Sep 07) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 4th Sep) | 3.5ft (1.0m) 18s |
| Best Surf | 11AM (Sun 6th Sep) | 6ft (1.9m) 14s |
| Most Powerful | 5AM (Mon 7th Sep) | 7ft (2.1m) 14s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Alright, let’s get into it. The long-range picture for Oceanside Harbor is a bit of a mixed bag. We’ve got a pulse of energy coming in for the start of next week, but it’s going to be a bit of a wait, and there’s some junk to sift through before we get to the good stuff.
Right now, and through the weekend, it’s pretty gutless. You’re looking at some small, weak swell – maybe 3ft – with a lot of cross-onshore wind. The water temp is running about average for this time of year, so nothing crazy there, just standard fall conditions. The energy is moderate, but it’s not doing us any favors. Saturday afternoon does see the energy tick up a notch, but the wave quality is still marginal. It’s really a waiting game.
Now, hold on to your leashes, because Sunday morning is where things wake up. That North-Northeast wind is going to be blowing offshore, and it’s going to clean things right up. Swell jumps to 6ft from the South with a 14-second period, and the energy is solid. That’s a proper, punchy combo for the Harbor. This is the standout of the whole period, and the early session is the one to make. The wind will be light enough to have it glassy, and the wave comment backs it up: good conditions for experienced surfers. This is advanced territory with that size, so be ready.
Sunday afternoon the wind swings around to the West-Northwest and it gets cross-onshore again, making it a bit of a messy crumble. The swell holds, but the quality drops off a cliff. Monday sees the swell top out around 7ft from the South-Southwest, but the wind is just onshore all day, making it a choppy, blown-out mess. The energy is strong, but it’s not going to be fun. The same story continues into Tuesday with 5-6ft of swell, but the cross-shore wind is going to chop it all up.
By Wednesday the swell fades back down to 4ft, and then it just fades away into nothing for the rest of the week. The following week is a desert. We’re talking days of sub-2ft slop with poor conditions and light to moderate onshore breezes. There’s a tiny blip of long-period energy (20+ seconds) that shows up on the 17th and 18th, but it’s just too small to even get excited about – 1-2ft of very long-period swell is just not doing anything for a beach/jetty setup. It might make the channel glassy, but that’s about it. That’s a solid, flat run from the 13th through the 19th.
So, bottom line: if you’re keen, you need to be out there early Sunday morning, September 6th. That’s the only real window we’ve got in this whole 16-day stretch. It’s a short-lived pulse of quality before the onshores ruin it. This spot is very consistent, so it tends not to stay poor for long, but this looks like a genuine dry spell after that one morning.
-Rusty
Short Range ForecastSome drizzle, heaviest during Sun morning. Warm (max 25°C on Sun afternoon, min 18°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Wed morning. Warm (max 26°C on Mon morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | ||||||||||||||
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 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | S 14 | S 14 | S 14 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 11 | SSW 11 | SW 16 | SW 17 |
Wave Graph | |||||||||||||||||||
651 | 587 | 559 | 620 | 512 | 512 | 1110 | 1442 | 1509 | 736 | 1676 | 1683 | 1422 | 1152 | 965 | 517 | 300 | 278 | 346 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | off | cross-on | cross-on | cross | off | cross-on | cross | cross-on | cross-on | glassy | cross-on | cross | glassy | cross-on | cross-on | glassy |
High Tide | 6:05AM1.25m | 3:13PM1.98m | 7:12AM1.38m | 4:46PM2.04m | 7:41AM1.51m | 6:01PM2.14m | 8:09AM1.64m | 7:00PM2.24m | 8:37AM1.76m | 7:51PM2.30m | 9:05AM1.88m | 8:37PM2.28m | |||||||
Low Tide | 10:07PM0.59m | 7:01AM1.25m | 11:37PM0.45m | 10:01AM1.32m | 00:40AM0.30m | 11:49AM1.23m | 1:27AM0.18m | 12:55PM1.08m | 2:07AM0.11m | 1:47PM0.90m | 2:43AM0.10m | 2:34PM0.74m | 3:16AM0.16m | ||||||
— | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | |
— | — | 7:10 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:04 | — | |
mm | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 1 | 1 | — |
Temp °C | 19 | 21 | 22 | 20 | 24 | 24 | 23 | 23 | 25 | 24 | 26 | 25 | 24 | 26 | 26 | 23 | 24 | 25 | 24 |
Feels °C | 20 | 20 | 21 | 21 | 23 | 23 | 23 | 22 | 25 | 24 | 25 | 23 | 23 | 24 | 23 | 22 | 24 | 23 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | S 13 | S 14 | S 14 | S 14 | S 13 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 11 | SSW 11 | SW 10 | SW 9 |
651 | 587 | 559 | 620 | 512 | 511 | 1110 | 1442 | 1509 | 736 | 1676 | 1683 | 1422 | 1152 | 965 | 517 | 300 | 234 | 173 | |
Swell 2 Height (m) Direction Period (s) | W 6 | SSW 11 | S 14 | S 14 | S 13 | SSW 16 | WSW 11 | WSW 10 | W 12 | SSW 15 | W 10 | — | — | SW 18 | SW 18 | W 5 | SW 16 | SW 16 | SW 17 |
29 | 78 | 148 | 257 | 356 | 512 | 45 | 19 | 3 | 736 | 17 | — | — | 150 | 81 | 19 | 211 | 278 | 346 | |
Swell 3 Height (m) Direction Period (s) | SSW 11 | W 6 | SSW 11 | SW 11 | SW 12 | WSW 12 | W 13 | SW 20 | — | — | — | — | — | SW 21 | SW 21 | SSW 13 | SSW 13 | SSW 12 | SSW 12 |
47 | 15 | 78 | 58 | 66 | 93 | 3 | 15 | — | — | — | — | — | 18 | 18 | 95 | 96 | 51 | 82 | |
Wind waves Height (m) Direction Period (s) | — | — | W 5 | — | — | — | — | — | W 11 | — | — | WNW 4 | — | — | W 4 | WNW 5 | — | W 4 | — |
— | — | 8 | — | — | — | — | — | 36 | — | — | 11 | — | — | 6 | 28 | — | 9 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 68 | 68 | 0 | 68 | 68 | 4 | 0 | 32 | 32 | 32 | 68 | 0 | 68 | 68 | 0 | 17 | 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.










