
Surf Forecasts:
Oceanside Harbor surf forecast from 20 Jul 2026:
- Best quality surf: Saturday 25 Jul, 2AM (local time) - 3ft (0.9m), 21s period, SW swell with glassy winds.
- Most powerful swell: Sunday 26 Jul, 2AM (local time) - 4ft (1.2m), 19s period, SW swell with 1,100 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 8PM (local time) - 3ft (0.9m), 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 Monday (Jul 20) at 8PM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 0.9m and 11s. 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 19s and forecast to arrive on Sunday (Jul 26) at 2AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 20th Jul) | 3ft (0.9m) 16s |
| Best Surf | 2AM (Sat 25th Jul) | 3ft (0.9m) 21s |
| Most Powerful | 2AM (Sun 26th Jul) | 4ft (1.2m) 19s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's take a good, hard look at what's coming down the line for Oceanside Harbor. We've got a solid 16-day window, and honestly, it's a bit of a mixed bag with some real promise if you can wait for it.
The water is a standout feature right now. At 74°, that's a whopping 7° warmer than usual for this time of year. It’s very unusual, so you can leave the thick wetsuit at home. The ocean feels like a bath.
Right now, things are a bit quiet. The first real surfable energy we see kicks off on Monday the 20th with a modest 3ft SSW groundswell, with a very long period of 15 seconds. The combined energy is moderate (641). The wind is light onshore, so it's a "make the most of it" session, not a standout. This marginal pattern continues through Tuesday and Wednesday, with the swell staying under 4ft and the winds mostly cross-onshore, making it a bit choppy. The best of this early run is probably Monday morning with the light breeze, but it's nothing to write home about.
Then we hit a bit of a lull in quality. The afternoon of Wednesday the 22nd gets a solid 12 mph cross-onshore wind that chops everything up, so I'd skip that. Thursday and Friday look a little better in size, but the wind is still a problem, keeping the surf quality poor. The combined energy picks up, hitting 949 and then 1072 on Friday morning, but it's all bark and no bite with the wind.
The real interest starts to build around the end of the first week. Saturday the 25th morning has a tiny 3ft swell but with a very long period of 21 seconds, and a light onshore breeze. The energy is strong (1018), but it's a real tease. The biggest issue is the wind. For the next several days, from the 26th through the 29th, we're mostly stuck with a moderate cross-onshore breeze from the SSW or WSW. The waves are there, bumping up to 4ft with strong energy (over 1000), but it's going to be a bumpy, chop-filled ride. It's a long stretch of mediocrity.
Now, hold onto your boards, because the best window is the very end of the forecast. On the 31st of July, we see a proper S swell start to fill in. Friday morning has a clean 5ft S swell with a 15-second period, and the combined energy is very strong (1168). The wind is a light cross-onshore, which is the best we've seen in a while. This is your first real window.
But the crown jewel is Saturday the 1st of August. The morning shows a solid 7ft S swell with a 14-second period and a massive combined energy of 1561. That's some serious grunt. The wind is light cross-onshore again. This is the one. It's a big swell, over 5ft, so it's not for beginners, and at 7ft, it's getting into the expert-only zone, especially at the jetty. The long period (14 seconds) is groundswell, and it will be powerful. The size and wind combo make it the clear standout of the entire 16 days. Expect a crowd, as this spot is often packed.
After that, the swell backs off quickly. Sunday the 2nd and Monday the 3rd drop back to 5ft and then 3ft, with the energy falling off a cliff. The winds stay light, but the pulse is gone. By Tuesday the 4th, we're down to a tiny 2ft SSW swell with weak energy (213). The run is over.
So, to sum it up: the first week is a write-off for quality. The middle of the window is a long, frustrating stretch of size with bad wind. The time to strike is Friday the 31st of July morning, and absolutely Saturday the 1st of August morning. That's the one. Get out there and get some.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Wed afternoon, min 21°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sat afternoon, min 21°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
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) | SSW 15 | SW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | S 14 | S 14 | S 13 | S 13 | SW 24 | SSW 13 | SW 21 | SW 21 | SW 21 | SW 19 | SW 19 | SW 18 | SW 18 |
Wave Graph | |||||||||||||||||||||
398 | 367 | 334 | 827 | 474 | 559 | 437 | 394 | 843 | 818 | 694 | 673 | 563 | 499 | 664 | 664 | 450 | 1100 | 863 | 743 | 799 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | cross-on | glassy | on | cross-on | glassy | cross-on | cross-on | cross-on | on | on | glassy | on | cross-on | on | cross-on | cross-on | cross-on |
High Tide | 3:02PM1.87m | 3:37AM1.29m | 3:53PM1.88m | 5:50AM1.24m | 4:47PM1.90m | 7:37AM1.30m | 5:41PM1.94m | 8:30AM1.38m | 6:30PM2.00m | 9:02AM1.44m | 7:14PM2.08m | 9:28AM1.49m | 7:53PM2.15m | ||||||||
Low Tide | 8:03AM0.79m | 10:06PM0.88m | 8:42AM0.98m | 11:35PM0.77m | 9:32AM1.13m | 00:43AM0.64m | 10:46AM1.22m | 1:32AM0.51m | 12:00PM1.25m | 2:11AM0.40m | 12:56PM1.23m | 2:45AM0.31m | 1:39PM1.18m | 3:17AM0.24m | |||||||
5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | |
— | 7:57 | — | — | 7:57 | — | — | 7:55 | — | — | 7:54 | — | — | 7:54 | — | — | 7:53 | — | — | 7:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 23 | 22 | 23 | 23 | 22 | 23 | 24 | 21 | 24 | 24 | 22 | 23 | 24 | 22 | 25 | 26 | 23 | 24 | 23 | 23 |
Feels °C | 24 | 23 | 24 | 23 | 21 | 23 | 23 | 23 | 22 | 25 | 24 | 24 | 24 | 24 | 24 | 26 | 26 | 25 | 25 | 23 | 25 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | S 14 | S 14 | S 13 | S 13 | S 12 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SW 19 | SW 19 | SW 18 | SW 18 |
235 | 188 | 334 | 827 | 474 | 559 | 437 | 394 | 843 | 818 | 694 | 673 | 453 | 499 | 411 | 322 | 311 | 1100 | 863 | 743 | 799 | |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SW 16 | S 10 | S 14 | SSW 9 | SSW 8 | SSW 8 | S 14 | W 6 | W 6 | SW 26 | W 6 | W 7 | W 6 | SW 21 | SW 21 | SW 21 | SSW 12 | SSW 11 | SSW 11 | SSW 11 |
398 | 367 | 125 | 16 | 84 | 54 | 25 | 268 | 30 | 37 | 171 | 80 | 56 | 37 | 664 | 664 | 450 | 260 | 133 | 151 | 103 | |
Swell 3 Height (m) Direction Period (s) | W 5 | SSW 13 | SW 13 | W 14 | SW 11 | W 4 | S 16 | SSW 8 | SW 7 | SW 6 | SW 18 | SW 18 | SW 24 | SSW 24 | W 6 | W 7 | W 6 | W 6 | W 6 | W 6 | W 6 |
8 | 35 | 175 | 15 | 19 | 6 | 78 | 22 | 12 | 6 | 49 | 49 | 563 | 368 | 28 | 32 | 30 | 19 | 30 | 18 | 12 | |
Wind waves Height (m) Direction Period (s) | — | — | — | W 4 | W 5 | — | — | W 5 | — | — | W 6 | — | — | — | — | — | — | — | — | — | — |
— | — | — | 1 | 4 | — | — | 13 | — | — | 35 | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 68 | 68 | 68 | 68 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 68 | 68 | 68 | 0 | 68 | 68 | 68 | 98 | 98 | 46 |
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.










