Surf Forecasts:
Oceanside Harbor surf forecast from 30 Aug 2026:
- Best quality surf: Saturday 29 Aug, 11PM (local time) - 4.5ft (1.3m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 11PM (local time) - 4.5ft (1.3m), 16s period, SSW swell with 778 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 11PM (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 11PM. The primary swell is predicted to be 1.3m and 16s period with a secondary swell of 0.7m and 7s. 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 11PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 14s period and expected on Saturday (Sep 05) at 8PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 29th Aug) | 4.5ft (1.3m) 16s |
| Best Surf | 11PM (Sat 29th Aug) | 4.5ft (1.3m) 16s |
| Most Powerful | 11PM (Sat 29th Aug) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Alright, Rusty here, and I’ve got the scoop for Oceanside Harbor over the next couple of weeks. Let’s be honest, it’s a bit of a flat spell staring us in the face, so don’t expect much action for a while.
Right now, the brunt of the rideable swell is a long way off. We’ve got a lot of small, weak energy and onshore to cross-onshore winds messing things up for the first week. The combined energy is painfully low, sitting between 285 and 692 at best for the first week, but the winds are just ruining any chance of a clean wave. The water is sitting at a balmy 76.3°, which is much warmer than normal for this time of year at *Oceanside Harbor*.
The first real blip on the radar comes on Tuesday, September 8th. We’ll see a bump in swell, with waves hitting around 6.2 ft to 7.2 ft from the SSW. The combined energy will finally roar to life with values hitting 1277, and then 1547 on the Tuesday afternoon – that’s proper moderate wave energy. This is the standout of the whole forecast. A long-period groundswell at 13 seconds. This will bring shape but might be a bit too straight for the beach setup here, though the size will please a lot of surfers. The wind is still cross-onshore, so it won’t be perfection, but it’s the only time we get some proper juice. The swell is over 5 ft, so it’s eyeing the advanced crowd, not the beginners. The break is very consistent, so there will be waves to chase, but expect crowds as it's often busy.
By Wednesday the 9th, the swell backs off quickly down to 5.6 ft and period drops to 10 seconds, energy takes a dive to 792, and winds get choppier. The rest of the second week is pretty lackluster: small waves from the SW with poor conditions and weak energy readings dropping below 500. It’s a long wait for not a whole lot of payoff after that Tuesday.
Keep an eye on Tuesday the 8th, that's your best bet, but don't get too excited about the rest.
Short Range ForecastMostly dry. Warm (max 27°C on Sat afternoon, min 21°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Tue afternoon, min 21°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sat 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 12 | SSW 13 | S 11 | SSW 13 | SSW 11 | SSW 12 | SW 16 | SSW 12 | SSW 12 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 627 | 759 | 537 | 478 | 389 | 253 | 184 | 160 | 152 | 147 | 213 | 303 | 261 | 333 | 265 | 292 | 547 | 594 | 566 | 620 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | on | on | glassy | on | cross-on | glassy | cross-on | cross-on | cross | cross | cross-on | cross | on | cross-on | glassy | on | cross-on | glassy |
High Tide | 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 | |||||||
 |  | | | | | | | |  | |  | | | | |  | | | | |
 | — | — | 6:22 | — | — | 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 | 24 | 25 | 25 | 23 | 23 | 23 | 22 | 24 | 25 | 23 | 25 | 25 | 23 | 25 | 25 | 23 | 24 | 24 | 23 |
Feels °C | 28 | 27 | 25 | 24 | 25 | 23 | 22 | 22 | 22 | 22 | 21 | 24 | 22 | 21 | 24 | 23 | 23 | 24 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SSW 14 | W 7 | SSW 14 | S 12 | S 11 | S 11 | S 10 | SSW 11 | SSW 12 | SSW 11 | SSW 12 | SSW 12 | SSW 11 | SSW 18 | SSW 17 | SSW 16 | SSW 16 |
| kJ | 627 | 759 | 537 | 478 | 99 | 253 | 184 | 160 | 152 | 100 | 213 | 303 | 198 | 333 | 265 | 200 | 547 | 594 | 566 | 620 |
Swell 2 Height (m) Direction Period (s) | W 6 | W 7 | W 8 | W 8 | SSW 14 | S 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SW 16 | SW 16 | W 6 | W 6 | SSW 18 | SSW 12 | SSW 11 | SW 11 | W 6 |
| kJ | 28 | 56 | 117 | 93 | 389 | 206 | 158 | 156 | 118 | 147 | 152 | 133 | 261 | 30 | 37 | 292 | 260 | 227 | 126 | 73 |
Swell 3 Height (m) Direction Period (s) | SW 12 | S 8 | SSE 13 | S 12 | SSE 12 | W 6 | SSW 19 | W 5 | W 6 | SW 18 | W 10 | W 11 | SSW 13 | SW 16 | SW 15 | W 6 | W 6 | W 6 | S 12 | SSW 10 |
| kJ | 37 | 10 | 33 | 44 | 46 | 41 | 35 | 20 | 15 | 80 | 2 | 2 | 65 | 268 | 186 | 37 | 61 | 26 | 12 | 68 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | W 6 | — | — | W 5 | W 5 | W 5 | W 6 | — | — | — | — | — | W 6 | — |
| kJ | — | — | — | — | — | — | 25 | — | — | 14 | 25 | 13 | 22 | — | — | — | — | — | 26 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 68 | 0 | 68 | 163 | 0 | 68 | 68 | 0 | 68 | 68 | 7 | 32 | 68 | 17 | 68 | 68 | 0 | 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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