Surf Forecasts:
Oceanside Harbor surf forecast from 23 Aug 2026:
- Best quality surf: Saturday 29 Aug, 5AM (local time) - 4ft (1.2m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 5AM (local time) - 4ft (1.2m), 17s period, SSW swell with 867 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 11PM (local time) - 2ft (0.6m), 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 Sunday (Aug 23) at 11PM. The primary swell is predicted to be 0.6m and 18s period with a secondary swell of 0.7m and 14s. 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 29) at 5AM. 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 (Sun 23rd Aug) | 2ft (0.6m) 18s |
| Best Surf | 5AM (Sat 29th Aug) | 4ft (1.2m) 17s |
| Most Powerful | 5AM (Sat 29th 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 get into it. We’ve got a 16-day window for Oceanside Harbor, and honestly, it’s a slow start. The first few days are a real struggle, with a lot of weak, short-period swell and those cross-onshore winds messing up the lineup. The water is sitting at a very unusual 74°, which is much warmer than normal for this time of year.
The first real hint of something surfable doesn’t show up until Tuesday, August 25th morning. We’re looking at a tiny 2ft swell from the SW with a short period of 16 seconds, and the combined energy is only moderate at 406. The wind is light and cross-on, so it’s still a marginal call. You’ll be fighting for little wind ripples, but it’s not a total washout.
The pattern starts to lift a bit from Wednesday, August 26th. The swell bumps up to 4ft from the S, with a period of 12 seconds and the combined energy climbing into the moderate range (594). The wind is still cross-on, but it’s a gentle breeze, so the chop isn’t too nasty. It’s still more of a small-wave practice session than a proper surf.
Things get a little more interesting heading into the first week of September. On Thursday, September 3rd, we see a longer-period 19-second swell from the SSW pushing through, with combined energy of 677. The cross-on wind from the W keeps it from being clean, but there’s some energy in the water. The best bet of the whole period looks like Friday, September 4th. The morning shows a solid 4ft SSW swell with a 17-second period, and the combined energy jumps to strong at 1139. The light cross-on breeze from the W is the best wind we’ll see, making it the standout day. The afternoon cleans up a bit more with a light onshore, but the morning is the window.
That swell hangs around for the weekend, with Saturday, September 5th offering a similar 5ft SSW swell and a combined energy of 1041, but the wind is more onshore from the WSW, so it’s not as clean.
We get a bit of a spike on Sunday, September 6th with a morning reading of 5ft SSW swell and a very strong combined energy of 1565. The wind is onshore, but light, so the waves will have punch but a bit of bump. Then Monday, September 7th sees the swell build to 7ft from the SSW, but the wind picks up to a moderate 12 mph cross-on from the SSW, making it choppy and poor for paddle surfing. At that size and with that wind, it’s more of a kite-surfing setup than a clean paddle wave.
The standout is definitely Friday, September 4th morning. The swell is solid, the period is long, and the wind is the lightest we’ll see. It’s not perfect, but it’s the best on offer. The rest of the time, you’re looking at marginal, small, or wind-affected waves.
Rusty out.
Short Range ForecastMostly dry. Warm (max 27°C on Tue morning, min 23°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 22°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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 19 | SW 18 | SSW 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | S 13 | S 12 | S 12 | S 12 | S 11 | S 11 | SSW 18 | SSW 17 | SSW 19 | SSW 17 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph | |||||||||||||||||||||
177 | 155 | 273 | 252 | 179 | 273 | 264 | 208 | 335 | 344 | 393 | 461 | 342 | 267 | 270 | 351 | 325 | 742 | 594 | 635 | 706 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | on | cross-on | glassy | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 8:41AM1.49m | 6:56PM2.01m | 8:58AM1.55m | 7:35PM2.10m | 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 | |||||||
Low Tide | 12:51PM1.24m | 2:18AM0.34m | 1:31PM1.14m | 2:46AM0.27m | 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 | |||||||
6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | |
— | 7:25 | — | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:20 | — | — | 7:19 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 24 | 26 | 26 | 24 | 27 | 27 | 25 | 24 | 24 | 23 | 25 | 25 | 24 | 27 | 27 | 25 | 27 | 27 | 25 |
Feels °C | 27 | 26 | 26 | 27 | 26 | 26 | 28 | 27 | 27 | 25 | 24 | 25 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | W 6 | SSW 13 | SSW 14 | SW 18 | SW 17 | SW 17 | SW 16 | S 13 | S 13 | S 12 | S 12 | S 12 | S 11 | S 11 | S 10 | W 8 | S 9 | SSW 17 | SSW 17 | SSW 16 | SSW 16 |
29 | 98 | 273 | 252 | 179 | 273 | 264 | 171 | 335 | 344 | 393 | 461 | 342 | 267 | 204 | 95 | 108 | 742 | 594 | 635 | 706 | |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SW 18 | SW 18 | SSW 12 | SSW 12 | S 13 | S 13 | SW 16 | W 6 | W 7 | SW 16 | SW 15 | W 7 | W 8 | SSW 18 | S 9 | W 8 | S 9 | W 8 | W 7 | W 8 |
99 | 155 | 199 | 89 | 85 | 126 | 126 | 208 | 26 | 47 | 198 | 174 | 52 | 44 | 270 | 113 | 44 | 73 | 74 | 54 | 117 | |
Swell 3 Height (m) Direction Period (s) | SW 19 | SSW 16 | W 5 | S 15 | S 14 | W 5 | W 6 | W 6 | SW 16 | SW 16 | W 6 | W 6 | SW 15 | SW 14 | SW 13 | SSW 17 | SSW 19 | W 10 | S 8 | S 9 | SSW 9 |
177 | 84 | 11 | 110 | 66 | 8 | 16 | 18 | 203 | 203 | 30 | 20 | 134 | 132 | 88 | 351 | 325 | 69 | 52 | 40 | 25 | |
Wind waves Height (m) Direction Period (s) | — | W 6 | — | — | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 17 | — | — | 15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 68 | 68 | 0 | 98 | 68 | 0 | 68 | 175 | 98 | 98 | 46 | 46 | 46 | 68 | 0 | 68 | 157 | 7 | 68 | 68 | 5 |
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.











