Surf Forecasts:
Oceanside Harbor surf forecast from 12 Aug 2026:
- Best quality surf: Thursday 13 Aug, 11PM (local time) - 3ft (0.9m), 16s period, SW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 2AM (local time) - 4ft (1.2m), 17s period, SSW swell with 807 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 2AM (local time) - 2.5ft (0.7m), 18s period with SW 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 12) at 2AM. The primary swell is predicted to be 0.7m and 18s period with a secondary swell of 0.5m and 12s. 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 1.2m 17s and forecast to arrive on Saturday (Aug 15) 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+) | 2AM (Wed 12th Aug) | 2.5ft (0.7m) 18s |
| Best Surf | 11PM (Thu 13th Aug) | 3ft (0.9m) 16s |
| Most Powerful | 2AM (Sat 15th Aug) | 4ft (1.2m) 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 coming our way.
To be straight with you, the next couple of weeks look pretty grim for a proper paddle. We’ve got a long stretch ahead with nothing really worth getting excited about, so don’t go clearing your schedule just yet. The water temp is sitting at 75°, which is a solid 7° warmer than usual for this time of year – that’s very unusual, so you might not even need a spring suit for the dip, but the waves just aren't there to enjoy it.
Starting things off, we’re looking at a real blank run. From Tuesday the 11th all the way through to Thursday the 21st of August, it’s a wasteland. Nearly every session is scored as poor, with a weird mix of small, weak swell and messy cross-onshore winds. The early mornings on the 14th, 15th, and 16th (Friday, Saturday, and Sunday) are labelled as marginal – more of a “maybe if you’re desperate” vibe. You’ve got a little bump of swell around 2ft to 4ft from the SSW and SW, but the wind is always cross-on from the west or WSW at 9-12 mph, just ruining any chance of a clean face. The combined energy does hit some moderate numbers, like 535 on Friday morning or 717 on Saturday afternoon, and the swell periods are a decent 16-18 seconds, which is proper long-period groundswell. However, with the wind constant and the break being a beach/jetty setup, it’s just going to be a choppy mess. For the experienced guys, the South swell might wrap in a bit better on a jetty, but it’s not worth a special trip.
Honestly, there isn’t a single standout in this 16-day window. The best of a bad bunch is probably the morning of Wednesday the 26th of August. We see a bit of life then, with a 3ft swell from the SW at 16 seconds, and the combined energy hits 614 – a solid moderate push. But again, the wind is cross-on from the west at 9 mph. It’s *marginal* rather than good. The jetty (Oceanside Harbor) can sometimes clean things up, but with that wind direction, it’s going to be lumpy. If you’re absolutely jonesing for a session, that Wednesday morning is your only real shot, but keep the expectations on the floor.
The whole outlook is pretty flat and unexciting. Don't bother rushing out. The forecasts can change, but right now, it’s a long, poor run for Oceanside.
- Rusty
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Warm (max 23°C on Tue afternoon, min 19°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Sat afternoon, min 19°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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 18 | SW 18 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 252 | 316 | 195 | 264 | 306 | 255 | 358 | 280 | 302 | 404 | 807 | 417 | 683 | 666 | 551 | 443 | 437 | 367 | 264 | 357 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | cross-on | cross-on | on | cross-on | glassy | cross-on | cross-on | glassy | on | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | glassy |
High Tide | 8:45PM2.49m | 10:13AM1.79m | 9:31PM2.43m | 10:46AM1.87m | 10:16PM2.30m | 11:19AM1.93m | 11:00PM2.09m | 11:52AM1.96m | 11:45PM1.85m | 12:26PM1.96m | 00:34AM1.60m | 1:01PM1.93m | 1:36AM1.37m | |||||||
Low Tide | 2:33PM0.92m | 3:49AM-0.05m | 3:23PM0.82m | 4:24AM0.03m | 4:11PM0.75m | 4:58AM0.17m | 5:00PM0.72m | 5:29AM0.35m | 5:51PM0.72m | 5:58AM0.56m | 6:46PM0.75m | 6:24AM0.77m | 7:51PM0.79m | |||||||
 |  |  | |  |  | |  | |  | | | | | | | | | | | |
 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — |
 | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:34 | — | — | 7:32 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 21 | 23 | 23 | 21 | 22 | 22 | 20 | 21 | 21 | 20 | 21 | 22 | 20 | 22 | 22 | 21 | 22 | 23 | 22 |
Feels °C | 23 | 23 | 24 | 23 | 22 | 23 | 22 | 21 | 21 | 20 | 20 | 21 | 21 | 21 | 23 | 21 | 21 | 21 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 18 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
| kJ | 118 | 316 | 195 | 264 | 306 | 255 | 358 | 280 | 217 | 404 | 807 | 417 | 683 | 666 | 551 | 443 | 437 | 367 | 264 | 357 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 12 | SSW 11 | SSW 12 | SSW 10 | S 11 | S 11 | S 10 | SSW 18 | SW 14 | W 4 | SW 14 | S 11 | W 5 | S 11 | S 10 | W 5 | S 10 | SSW 18 | W 6 |
| kJ | 252 | 68 | 42 | 49 | 35 | 62 | 61 | 51 | 302 | 214 | 5 | 191 | 21 | 13 | 9 | 8 | 19 | 8 | 63 | 30 |
Swell 3 Height (m) Direction Period (s) | SW 15 | SW 13 | SW 13 | SW 13 | S 12 | SW 12 | SSW 21 | SSW 20 | SSW 9 | W 12 | S 12 | S 11 | W 11 | S 11 | W 10 | W 10 | S 10 | W 10 | SW 10 | S 10 |
| kJ | 75 | 44 | 44 | 61 | 27 | 23 | 44 | 149 | 16 | 3 | 44 | 37 | 2 | 20 | 2 | 2 | 8 | 2 | 15 | 7 |
Wind waves Height (m) Direction Period (s) | WNW 12 | — | W 4 | — | — | — | W 8 | — | W 6 | SSW 11 | W 4 | W 5 | W 5 | — | W 6 | W 5 | — | W 6 | W 6 | — |
| kJ | 48 | — | 2 | — | — | — | 12 | — | 3 | 78 | 8 | 7 | 12 | — | 15 | 20 | — | 22 | 22 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 68 | 0 | 68 | 68 | 17 | 68 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 32 | 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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