Surf Forecasts:
Oceanside Harbor surf forecast from 26 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★+): Wednesday 26 Aug, 11PM (local time) - 4ft (1.2m), 11s 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 Wednesday (Aug 26) at 11PM. The primary swell is predicted to be 1.2m and 11s period with a secondary swell of 0.6m and 15s. 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+) | 11PM (Wed 26th Aug) | 4ft (1.2m) 11s |
| 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
Right, grab a coffee, because I’ve been staring at the charts for Oceanside Harbor and I’ve got the full picture. It’s a bit of a mixed bag, but there’s a light at the end of the tunnel, so let’s break it down.
The water’s sitting at 73°F, which is a couple of degrees warmer than you’d expect for this time of year – it’s a good 5°F above normal, so feels like a warm bath out there.
The next 16 days are a story of waiting for the real juice to arrive. The start is a bit flat. Wednesday morning, 26 August, you’re looking at small 4ft swell from the south with a 12-second period, but the wind is just light onshore, keeping things a bit messy. The energy is moderate (807), but the quality is just “marginal” – it’s not going to be a classic. Thursday morning, 27 August, drops to 4ft, and the wind stays light onshore, but again, it’s pretty average. The afternoon gets choppier. Friday, 28 August, the morning has a small 3ft swell with a very long 17-second period from the south-southwest, but the wind is cross-on, so it’s not clean. That long period means the sets will be fat and slow at the beach, which is a bit of a pain.
From Saturday, 29 August, through to Tuesday, 1 September, it’s a real grind. Swell hangs around 3ft to 4ft, period is long (15-17 seconds), but the wind is mostly onshore or cross-onshore, and the energy is moderate (400-700 range). The wave comment is consistently “marginal” or “poor.” It’s not surf I’d be rushing for.
Then we hit a gap. Wednesday, 2 September, to Thursday, 3 September, is where things start to get interesting. The swell bumps up to 5ft on Wednesday afternoon, then 6ft on Thursday morning, and by Thursday afternoon, 3 September, it hits 6ft from the south-southwest with a 12-second period. The energy jumps to strong (1008), and the wind goes light cross-shore, which is a decent setup. This is the first real standout. That 6ft is still okay for most competent surfers, but it’s getting a bit punchy for beginners. The break is a beach/jetty mix, so the long period (12 seconds) will work okay, but keep an eye on the tide.
Friday, 4 September, drops back to 3ft, and the afternoon gets wrecked by a moderate 12 mph wind, so that’s a write-off. Saturday, 5 September, has a bit of size at 4ft with a long 16-second period, but the wind is cross-on again, so it’s choppy.
Now, the real gem in the second week is Thursday, 3 September, with that 6ft swell and light cross-shore wind. That’s the best on offer. It’s the only day where the energy is genuinely strong and the wind is workable. The rest of the second week is a slow fade into small, poor-quality waves. The last decent-ish morning is 9 September, with a 3ft swell and light onshore wind, but it’s nothing to write home about.
So, the long story short: the first week is mostly a bust. The standout is the morning of Thursday, 3 September, with 6ft south-southwest swell and light cross-shore wind. It’s not perfect, but it’s the only real window of quality. After that, it fizzles out. Expect crowds at Oceanside Harbor – it’s often busy, so you’ll be sharing the peak.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Fri morning, min 24°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sat morning, min 20°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | S 12 | S 12 | S 11 | S 12 | S 11 | SSW 18 | SSW 17 | SW 14 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | S 13 | S 12 | S 12 | S 11 | S 11 | S 12 |
Wave Graph | |||||||||||||||||||||
485 | 461 | 272 | 333 | 231 | 270 | 351 | 147 | 932 | 594 | 627 | 706 | 537 | 405 | 321 | 276 | 295 | 347 | 255 | 289 | 425 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | on | cross-on | glassy | cross-on | cross-on | glassy | on | on | cross-on | on | on | glassy | on | cross-on | glassy | cross-on | cross-on | glassy |
High Tide | 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 | 12:06PM2.03m | 00:58AM1.39m | |||||||
Low Tide | 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 | 5:34AM0.79m | 7:03PM0.65m | ||||||||
6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | |
— | 7:22 | — | — | 7:21 | — | — | 7:20 | — | — | 7:19 | — | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 24 | 27 | 27 | 25 | 26 | 25 | 23 | 24 | 23 | 21 | 22 | 22 | 21 | 24 | 23 | 22 |
Feels °C | 28 | 27 | 27 | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 25 | 26 | 24 | 22 | 22 | 22 | 20 | 22 | 23 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 11 | S 12 | S 11 | S 10 | W 9 | W 7 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | W 7 | S 13 | S 12 | S 12 | S 11 | S 11 | S 12 |
485 | 461 | 272 | 333 | 231 | 154 | 99 | 51 | 932 | 594 | 627 | 706 | 537 | 405 | 87 | 276 | 295 | 347 | 255 | 289 | 425 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 18 | SSW 17 | SW 14 | W 7 | W 7 | W 7 | W 8 | W 8 | W 7 | SSW 14 | SSW 14 | SSW 13 | SW 13 | SSW 13 | SW 13 | SW 18 |
302 | 196 | 171 | 169 | 132 | 270 | 351 | 147 | 42 | 68 | 50 | 141 | 114 | 78 | 321 | 261 | 158 | 88 | 116 | 44 | 111 | |
Swell 3 Height (m) Direction Period (s) | W 6 | W 6 | W 6 | SSW 19 | W 12 | SW 14 | S 9 | S 9 | S 8 | W 9 | SW 12 | S 8 | SSE 13 | SSE 12 | S 15 | W 7 | SSW 19 | W 5 | W 5 | SW 18 | W 5 |
20 | 11 | 12 | 142 | 71 | 116 | 79 | 54 | 34 | 27 | 37 | 10 | 35 | 52 | 287 | 56 | 35 | 12 | 8 | 80 | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 26 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 98 | 68 | 46 | 98 | 46 | 0 | 68 | 68 | 0 | 68 | 68 | 68 | 68 | 68 | 0 | 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.











