Surf Forecasts:
Oceanside Harbor surf forecast from 25 Aug 2026:
- Best quality surf: Saturday 29 Aug, 2AM (local time) - 4.5ft (1.3m), 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★+): Tuesday 25 Aug, 8PM (local time) - 3.5ft (1.0m), 13s period with S 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 (Aug 25) at 8PM. The primary swell is predicted to be 1.0m and 13s period with a secondary swell of 0.6m and 16s. 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+) | 8PM (Tue 25th Aug) | 3.5ft (1.0m) 13s |
| Best Surf | 2AM (Sat 29th Aug) | 4.5ft (1.3m) 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
Alright folks, Rusty here. Let's have a look at what's on the menu for Oceanside Harbor over the next couple of weeks.
Right off the bat, it's a bit of a slow start. The water is sitting at 74°, which is a solid 6° warmer than normal for this time of year – that's a real standout, bathwater warm. But the surf? It's small and pretty average. There's a long-period groundswell coming in from the SW on the 25th, with a 16-second period, but the size is only 2ft. That long period is good for shape, but the energy is weak (400). The wind is light onshore, which won't help. This is marginal stuff at best.
The real action doesn't pick up until later. Wednesday the 26th sees a bump in swell to 4ft from the S, with a 12-second period. The combined energy jumps to a moderate 807, which is the best we'll see. The wind stays light onshore, but it's clean enough. This is the best the first week has to offer, but it's still just a "marginal" call. Thursday the 27th holds similar 4ft S swell, with light wind, but it's nothing to write home about. The rest of the first week into early September is a lot of the same story: small swell, cross-onshore winds, and a lot of "poor" or "marginal" conditions.
There's a real lull from the 31st of August through the 2nd of September. The swell drops, the wind gets messy, and the energy dips. It's a dull stretch.
Now, heading into the second week, things might get a little more interesting. On the 3rd of September, we see a long-period SSW swell creeping in at 18 seconds, but it's only 3ft. The energy is moderate (527). By the 5th of September, the swell rises to 4ft from the SSW, but the wind is a stubborn cross-onshore breeze, making it choppy. The energy is moderate (780), but it's not clean. Looking further out to the 9th of September, there's a similar 3ft SW swell with a 18-second period and moderate energy (645), but again, the wind is onshore or cross-onshore.
Honestly, there's no true standout session in this 16-day window. The biggest bump in energy is on the 26th, but even that is just a "marginal" score. The consistent onshore and cross-onshore wind is the real killer here. This is a spot for the die-hards who don't mind a little chop, but for a clean, fun wave, you'll be waiting. If you're a kiter, this setup might look more appealing than it does for a surfer.
Keep your eyes on the forecasts, things can change. For now, it's a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Wed morning, min 22°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 20°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | SW 16 | S 13 | S 13 | S 12 | S 12 | S 11 | S 12 | S 11 | SSW 18 | SSW 17 | SSW 19 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 |
Wave Graph | |||||||||||||||||||||
264 | 229 | 599 | 485 | 461 | 272 | 333 | 279 | 270 | 351 | 325 | 932 | 587 | 788 | 706 | 537 | 405 | 321 | 321 | 178 | 154 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | on | on | cross-on | on | on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | cross | on | on | cross-on | on | on | glassy |
High Tide | 9:16AM1.61m | 8:10PM2.17m | 9:35AM1.68m | 8:44PM2.20m | 9:55AM1.75m | 9:18PM2.17m | 10:17AM1.83m | 9:53PM2.09m | 10:39AM1.90m | 10:30PM1.96m | 11:04AM1.97m | 11:10PM1.79m | 11:32AM2.02m | 11:57PM1.60m | |||||||
Low Tide | 2:06PM1.04m | 3:12AM0.24m | 2:40PM0.94m | 3:36AM0.24m | 3:15PM0.84m | 4:00AM0.29m | 3:51PM0.76m | 4:23AM0.38m | 4:31PM0.69m | 4:46AM0.49m | 5:13PM0.65m | 5:10AM0.64m | 6:02PM0.64m | ||||||||
6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | |
— | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:20 | — | — | 7:19 | — | — | 7:16 | — | — | 7:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 24 | 26 | 26 | 24 | 26 | 26 | 25 | 27 | 27 | 25 | 26 | 26 | 23 | 24 | 24 | 22 | 23 | 23 | 22 |
Feels °C | 26 | 26 | 27 | 27 | 27 | 26 | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 26 | 25 | 24 | 24 | 24 | 23 | 22 | 24 |
Swell 1 Height (m) Direction Period (s) | SW 16 | S 13 | S 13 | S 12 | S 12 | S 11 | S 12 | S 11 | S 10 | SSW 17 | S 8 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | W 7 | SSW 14 | W 7 | W 6 |
264 | 229 | 599 | 485 | 461 | 272 | 333 | 279 | 158 | 351 | 71 | 932 | 587 | 788 | 706 | 537 | 405 | 76 | 321 | 43 | 38 | |
Swell 2 Height (m) Direction Period (s) | S 13 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 18 | S 9 | SW 14 | W 7 | W 7 | W 9 | W 7 | W 8 | W 7 | SSW 14 | W 7 | SSW 14 | S 12 |
126 | 208 | 203 | 248 | 198 | 171 | 169 | 167 | 270 | 103 | 147 | 51 | 83 | 15 | 91 | 111 | 80 | 321 | 58 | 178 | 134 | |
Swell 3 Height (m) Direction Period (s) | W 6 | SSE 12 | W 6 | W 6 | W 6 | W 13 | SSW 19 | W 12 | SW 14 | W 11 | SSW 19 | S 8 | SSW 8 | S 8 | S 9 | SSE 13 | SSE 12 | S 14 | S 12 | S 12 | SSW 13 |
10 | 47 | 11 | 20 | 11 | 55 | 142 | 71 | 116 | 61 | 325 | 33 | 20 | 10 | 14 | 35 | 52 | 142 | 112 | 103 | 154 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 7 | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | 59 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 68 | 68 | 0 | 98 | 68 | 36 | 108 | 122 | 0 | 23 | 68 | 0 | 68 | 68 | 5 | 68 | 68 | 34 | 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.











