Surf Forecasts:
Oceanside Harbor surf forecast from 14 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 3ft (0.9m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Sunday 20 Sep, 2PM (local time) - 3ft (0.9m), 18s period, SW swell with 528 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 8PM (local time) - 1.5ft (0.4m), 20s 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 Tuesday (Sep 15) at 8PM. The primary swell is predicted to be 0.4m and 20s period with a secondary swell of 0.5m and 9s. Another secondary swell of 0.5m and 16s is also forecast. 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 0.9m 18s and forecast to arrive on Sunday (Sep 20) at 2PM. 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 (Tue 15th Sep) | 1.5ft (0.4m) 20s |
| Best Surf | 5AM (Thu 17th Sep) | 3ft (0.9m) 16s |
| Most Powerful | 2PM (Sun 20th Sep) | 3ft (0.9m) 18s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Alright, Rusty here, checking out what we've got for our local stretch over the next 16 days.
Honestly, it’s a quiet outlook. We’re looking at a long run of small, choppy conditions here at Oceanside Harbor, so don’t expect much.
Right from the start on Monday the 14th, the surf is small at just 3ft from the west, with a short 8-second period. The cross-onshore southerly wind at 9 mph has it all chopped up. It’s poor. That same story rolls through Monday afternoon with the swell dropping to 2ft, though oddly it digs up a long-period 18-second groundswell from the southwest. That long period generally means better-shaped waves, but with the combined swell energy (311) being moderate and the wind not playing ball, it’s not going to come together here.
Tuesday the 15th and Wednesday the 16th see us stuck in the same rut. Swell hangs around 2ft to 3ft, mostly from the southwest, with periods still long but winds are light to gentle and onshore. The energy stays moderate, but the quality remains marginal at best. It’s just not worth paddling out for.
Late in the first week, Friday the 18th shows a slight flicker of hope. Morning session has a 2ft southwest swell with a really solid 19-second period and a light onshore flow. The combined energy is moderate (502), and with the wind being light, it might get a little clean, but the size is tiny. This is the only time in the whole run that we even get a score of 2 out of 10, but honestly, that’s scraping the barrel.
We then drift through the entire second week into the end of September with flat, poor conditions. Swell is consistently 3ft or below, period dropping from 18 seconds down to 12 seconds, and the wind is either light cross-onshore or a moderate breeze from the west-northwest. The combined swell energy stays in the moderate 200-400 range, but it’s all messy, strong wind for the size, and just not surfable. The water temp is going to be about average for this time of year, so no surprises there.
Look, this is a blank run. The Harbor can go quiet like this, and this is one of those times. If you’re desperate, maybe an early Friday morning paddle on the 18th for that tiny, clean, long-period bump, but that’s it. Everything else is a kite-surfing, flat-water day. Forecasts can change, but right now, we’re in a drought.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon morning, min 19°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Fri afternoon, min 19°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | W 10 | W 8 | SW 18 | SW 17 | SW 16 | SSW 20 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 |
Wave Graph  | |||||||||||||||||||
 kJ | 149 | 113 | 150 | 190 | 161 | 127 | 114 | 390 | 347 | 366 | 288 | 246 | 242 | 303 | 303 | 234 | 379 | 375 | 375 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | on | glassy | on | cross-on | glassy | cross-on | cross-on | glassy | on | cross-on | glassy | on | on | glassy |
High Tide | 11:30PM1.68m | 11:24AM2.06m | 00:18AM1.49m | 11:53AM1.99m | 1:22AM1.32m | 12:27PM1.90m | 3:52AM1.22m | 1:13PM1.80m | 2:35PM1.72m | 8:13AM1.44m | 4:22PM1.72m | ||||||||
Low Tide | 5:04AM0.79m | 6:14PM0.56m | 5:24AM0.96m | 7:08PM0.64m | 5:37AM1.11m | 8:22PM0.72m | 5:04AM1.22m | 10:05PM0.73m | 11:35PM0.67m | 10:11AM1.43m | 00:29AM0.57m | ||||||||
 |  | | | | | | | | | | | | | | | | | | |
 | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — |
 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 22 | 21 | 22 | 22 | 20 | 21 | 21 | 19 | 21 | 21 | 20 | 21 | 22 | 21 | 21 | 22 | 21 |
Feels °C | 23 | 22 | 21 | 22 | 22 | 22 | 22 | 21 | 20 | 20 | 21 | 20 | 21 | 21 | 21 | 21 | 21 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 8 | W 10 | W 9 | W 9 | W 9 | SW 16 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SW 19 | SSW 13 | SW 18 | SW 18 | SW 18 |
| kJ | 149 | 113 | 121 | 59 | 57 | 56 | 88 | 390 | 347 | 366 | 288 | 246 | 242 | 183 | 303 | 184 | 379 | 375 | 375 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | W 8 | W 6 | W 6 | SSW 13 | S 12 | SSW 12 | SSW 11 | SW 19 | SSW 13 | W 6 | W 6 | W 6 | W 6 |
| kJ | 85 | 108 | 150 | 190 | 161 | 122 | 32 | 12 | 10 | 65 | 73 | 94 | 68 | 303 | 141 | 31 | 24 | 23 | 16 |
Swell 3 Height (m) Direction Period (s) | SW 19 | SW 13 | SW 13 | SW 12 | SW 12 | SSW 20 | SSW 18 | S 9 | S 9 | SSW 9 | SW 21 | SW 21 | SW 21 | W 6 | W 6 | SW 19 | SSW 13 | SSW 13 | SSW 12 |
| kJ | 129 | 44 | 40 | 38 | 37 | 127 | 114 | 15 | 14 | 28 | 160 | 162 | 156 | 16 | 16 | 234 | 99 | 96 | 85 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WNW 3 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 34 | 46 | 46 | 9 | 46 | 108 | 0 | 68 | 68 | 0 | 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.
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