Surf Forecasts:
Oceanside Harbor surf forecast from 1 Sep 2026:
- Best quality surf: Sunday 6 Sep, 5PM (local time) - 10ft (3.0m), 15s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 20ft (6.0m), 12s period, S swell with 9,561 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 2AM (local time) - 1.5ft (0.5m), 13s 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 Wednesday (Sep 02) at 2AM. The primary swell is predicted to be 0.5m and 13s period with a secondary swell of 0.7m and 5s. Another secondary swell of 0.5m and 10s 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 6.0m 12s and forecast to arrive on Tuesday (Sep 08) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 15s period and expected on Saturday (Sep 05) at 2AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 2nd Sep) | 1.5ft (0.5m) 13s |
| Best Surf | 5PM (Sun 6th Sep) | 10ft (3.0m) 15s |
| Most Powerful | 2AM (Tue 8th Sep) | 20ft (6.0m) 12s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Alright, Rusty here, let’s talk about what’s cooking at Oceanside Harbor.
Right off the bat, I gotta be straight with you – the first week is a tough slog. From Tuesday the 1st right through to Friday the 4th, it’s mostly junk. Tiny little 2ft to 3ft swells from the SSW, cross-on winds messing it up, and the water’s sitting at a very unusual 77° – that’s far warmer than normal for this time of year, feels like bathwater. The wave energy is weak to moderate (242 to 719), but it’s all just poor or marginal. Not worth paddling out for.
Now, Saturday the 5th afternoon is where things start to get interesting. That’s a proper standout. The swell jumps to 5ft from the S, with a 15-second period – that’s a nice long groundswell. And the wind? Glassy. Zero wind. The wave energy is strong (1562), and the conditions are described as excellent for experienced surfers. This is the best session on offer. The break is a beach/jetty setup, so that long period might make it a bit straight, but with glass, who cares?
Sunday the 6th morning is another standout, but this one’s for the big dogs only. We’re looking at 8ft from the S, 15-second period, light offshore NNE wind at 6 mph. The wave energy is very strong (3067). The report says it’s excellent for experienced surfers, but that’s a heavy wave. Sunday afternoon and Monday the 7th get even bigger – 10ft to 15ft – but the file warns it’s predicted to be too big for this break. That’s expert-only territory, and even then, it’s pushing it at a jetty spot.
After that, the surf drops off again. Tuesday the 8th through the end of the 16-day window, it’s back to small, weak, and mostly onshore. 1ft to 4ft, short periods, cross-on winds. The energy drops back to 185 to 663. Don’t get your hopes up for the second week – it’s a long flat spell.
So, to wrap it up: your best bet is Saturday afternoon, September 5th, for that glassy 5ft groundswell. If you’ve got the skills and the nerve, Sunday morning the 6th is the big one. But keep in mind, Oceanside Harbor can get crowded, and it’s a very consistent spot, so expect company.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Tue morning, min 19°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Sun morning. Warm (max 26°C on Sun night, min 20°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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 13 | SSW 13 | SW 16 | SSW 16 | SW 17 | SW 15 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | S 15 | S 15 | S 15 | S 15 | S 15 | S 13 | S 12 | S 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 116 | 114 | 93 | 132 | 175 | 291 | 188 | 399 | 547 | 587 | 566 | 674 | 512 | 1010 | 1847 | 3067 | 3430 | 4223 | 2775 | 5630 | 9561 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross-on | cross-on | glassy | on | cross-on | glassy | cross-on | cross-on | glassy | on | glassy | cross-off | off | cross-off | off | cross-off | cross | cross |
High Tide | 12:06PM2.03m | 00:58AM1.39m | 12:48PM2.03m | 2:40AM1.23m | 1:48PM2.00m | 6:05AM1.25m | 3:13PM1.98m | 7:12AM1.38m | 4:46PM2.04m | 7:41AM1.51m | 6:01PM2.14m | 8:09AM1.64m | 7:00PM2.24m | ||||||||
Low Tide | 7:03PM0.65m | 5:58AM0.95m | 8:23PM0.65m | 6:24AM1.10m | 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 | ||||||||
 | |  | | | | | | | | | |  |  |  |  | |  | | | | |
 | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — |
 | — | 7:15 | — | — | 7:14 | — | — | 7:12 | — | — | 7:10 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 15 | 3 | 1 | — | — | — |
Temp °C | 23 | 22 | 21 | 22 | 23 | 21 | 22 | 22 | 21 | 22 | 23 | 21 | 24 | 24 | 24 | 24 | 24 | 26 | 30 | 31 | 29 |
Feels °C | 23 | 19 | 21 | 21 | 21 | 20 | 21 | 21 | 21 | 21 | 23 | 23 | 24 | 25 | 26 | 27 | 27 | 28 | 32 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 10 | W 5 | W 6 | SSW 13 | SSW 12 | SSW 11 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | S 14 | S 15 | S 15 | S 15 | S 15 | S 15 | S 13 | S 12 | SW 18 |
| kJ | 112 | 78 | 27 | 24 | 149 | 203 | 140 | 399 | 547 | 587 | 566 | 674 | 501 | 1010 | 1847 | 3067 | 3430 | 4223 | 2775 | 3594 | 50 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | S 10 | SSW 12 | S 10 | W 6 | W 6 | SSW 10 | W 6 | W 6 | SSE 15 | S 15 | SSW 16 | SSW 16 | WSW 10 | — | — | — | — | — | — |
| kJ | 116 | 114 | 46 | 106 | 80 | 35 | 37 | 56 | 30 | 54 | 240 | 435 | 512 | 512 | 40 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 5 | SW 18 | SSW 13 | SW 16 | SSW 16 | SW 17 | SW 15 | SSW 12 | SSW 11 | SSW 11 | W 6 | W 5 | SW 11 | SW 11 | SW 20 | — | — | — | — | — | — |
| kJ | 14 | 80 | 93 | 132 | 175 | 291 | 188 | 59 | 87 | 78 | 23 | 8 | 46 | 40 | 15 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | W 6 | — | — | W 6 | — | — | W 6 | — | — | — | — | — | — | — | — | — | — | — | S 12 | S 12 |
| kJ | — | 21 | — | — | 22 | — | — | 35 | — | — | — | — | — | — | — | — | — | — | — | 5630 | 9561 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 68 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 0 | 32 | 0 | 0 | 0 | 5 | 5 | 5 | 68 | 9 |
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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