
Surf Forecasts:
Oceanside Harbor surf forecast from 7 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 11PM (local time) - 3.5ft (1.0m), 10s period, SSW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 11AM (local time) - 6ft (1.8m), 13s period, SSW swell with 1,025 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 11PM (local time) - 3.5ft (1.0m), 10s 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 08) at 11PM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.5m and 13s. Another secondary swell of 0.6m and 4s 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 1.8m 13s and forecast to arrive on Monday (Sep 07) at 11AM. 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+) | 11PM (Tue 8th Sep) | 3.5ft (1.0m) 10s |
| Best Surf | 11PM (Tue 8th Sep) | 3.5ft (1.0m) 10s |
| Most Powerful | 11AM (Mon 7th Sep) | 6ft (1.8m) 13s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s coming up for Oceanside Harbor.
Right off the bat, I gotta be straight with you – this isn’t a week for the highlight reel. We’re looking at a long stretch of pretty average conditions, so don't get your hopes up too high. The first real window of opportunity is on Monday, September 7th, but it’s a mixed bag.
The main event for the whole period is that Monday morning. We’ve got a solid 5.9ft swell rolling in from the SSW, with a period of 13 seconds. That’s a proper groundswell, packing some serious energy (1098). The water temp is sitting at 73.6°, which is much warmer than normal for this time of year, so it’s a pleasant surprise. The trouble is the wind. It’s a cross-onshore breeze from the WNW at 6 mph, which is light enough to be manageable but not glassy. It’s a marginal call, but it’s the biggest, most powerful swell we’ll see. By Monday afternoon, the wind picks up to 16 mph and it gets choppy, so that window is short.
After that, things drop off. Tuesday and Wednesday are small, in the 3.3ft range, still cross-onshore, and the energy drops significantly. The rest of the first week and into the second week is pretty poor. The swell stays tiny, often under 3.3ft, and while the wind occasionally gets light and turns more onshore, the wave quality is just not there. There’s a long gap from about Wednesday, September 9th, all the way through to the weekend of the 20th where the surf is just too small and weak to get excited about.
The one thing that does look interesting, but it’s a long way off, is the stretch from Sunday, September 20th, into Monday, September 21st. The swell picks up a touch to 3.0ft, but the period is a very long 19 seconds. That’s a deep-water groundswell that will have a lot of energy (555) for its size. The wind is light and variable, even turning onshore at times. For a jetty/beach break like Oceanside Harbor, a period that long can make the waves break a little too straight and fat, so it’s not a guarantee. But if the direction lines up and the tide is right, it could offer some long, clean lines when nothing else is happening. This is a long-range call, so don’t book the day off yet.
If you’re a beginner, the 5.9ft on Monday is a bit of a handful, and the rest is too small to be much fun. For the experienced crew, Monday morning is your best bet, and keep an eye on that long-period stuff around the 20th, but be prepared for it to be a bit tricky.
Short Range ForecastMostly dry. Warm (max 27°C on Mon morning, min 23°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Thu morning, min 19°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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 13 | SSW 12 | SSW 11 | SSW 14 | SSW 10 | SSW 13 | SW 16 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 19 |
Wave Graph | |||||||||||||||||||||
1025 | 916 | 615 | 246 | 190 | 151 | 214 | 278 | 419 | 553 | 502 | 483 | 400 | 365 | 309 | 214 | 164 | 160 | 147 | 87 | 179 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | on | cross | cross-on | on | glassy |
High Tide | 8:09AM1.64m | 7:00PM2.24m | 8:37AM1.76m | 7:51PM2.30m | 9:05AM1.88m | 8:37PM2.28m | 9:33AM1.98m | 9:21PM2.20m | 10:01AM2.05m | 10:04PM2.06m | 10:29AM2.09m | 10:46PM1.88m | 10:56AM2.10m | 11:30PM1.68m | |||||||
Low Tide | 12:55PM1.08m | 2:07AM0.11m | 1:47PM0.90m | 2:43AM0.10m | 2:34PM0.74m | 3:16AM0.16m | 3:18PM0.61m | 3:46AM0.28m | 4:01PM0.53m | 4:14AM0.43m | 4:43PM0.49m | 4:40AM0.61m | 5:27PM0.50m | ||||||||
6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | |
— | 7:07 | — | — | 7:06 | — | — | 7:04 | — | — | 7:02 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 25 | 26 | 26 | 25 | 27 | 26 | 24 | 24 | 24 | 23 | 23 | 23 | 22 | 21 | 21 | 20 | 21 | 22 | 20 |
Feels °C | 28 | 26 | 26 | 26 | 24 | 26 | 26 | 25 | 26 | 24 | 24 | 24 | 23 | 23 | 23 | 20 | 21 | 22 | 20 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 12 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | W 7 | W 7 | W 7 | W 7 | W 9 |
1025 | 916 | 615 | 246 | 190 | 142 | 67 | 278 | 419 | 553 | 502 | 483 | 400 | 365 | 309 | 214 | 42 | 58 | 82 | 69 | 117 | |
Swell 2 Height (m) Direction Period (s) | SW 19 | SW 19 | W 4 | SSW 14 | SSW 13 | SSW 13 | SW 16 | SSW 12 | W 5 | W 6 | W 6 | W 7 | W 7 | W 7 | W 6 | W 6 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 |
58 | 58 | 5 | 207 | 154 | 151 | 214 | 86 | 12 | 16 | 15 | 33 | 44 | 31 | 28 | 38 | 164 | 160 | 147 | 87 | 84 | |
Swell 3 Height (m) Direction Period (s) | WSW 10 | — | SW 18 | SW 18 | SW 18 | SW 16 | SSW 13 | SSW 8 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SW 6 | S 9 | WSW 14 | S 9 | S 9 | SW 19 | SW 19 | SW 19 |
9 | — | 51 | 80 | 112 | 130 | 135 | 45 | 82 | 47 | 46 | 23 | 22 | 6 | 15 | 38 | 14 | 13 | 59 | 58 | 179 | |
Wind waves Height (m) Direction Period (s) | WNW 4 | W 4 | WNW 4 | W 4 | W 3 | WNW 4 | — | W 4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
6 | 7 | 9 | 3 | 6 | 11 | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 32 | 68 | 32 | 68 | 51 | 0 | 32 | 32 | 4 | 98 | 46 | 46 | 98 | 46 | 9 | 98 | 68 | 9 | 46 | 171 | 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.










