Surf Forecasts:
Oceanside Harbor surf forecast from 11 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 2.5ft (0.8m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Friday 11 Sep, 8PM (local time) - 3.5ft (1.0m), 15s period, SW swell with 418 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 8PM (local time) - 2ft (0.6m), 14s 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 Saturday (Sep 12) at 8PM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.5m and 6s. 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 1.0m 15s and forecast to arrive on Friday (Sep 11) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 12th Sep) | 2ft (0.6m) 14s |
| Best Surf | 5AM (Thu 17th Sep) | 2.5ft (0.8m) 16s |
| Most Powerful | 8PM (Fri 11th Sep) | 3.5ft (1.0m) 15s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Alright, let’s break down what the ocean’s got for us at Oceanside Harbor over the next couple weeks. This break is a consistent one, exposed to the west, and right now the water is at 71°F, which feels a touch warmer than normal, so you can probably ditch the wetsuit top.
We’re starting off rough on Friday the 11th. There’s a long-period SW groundswell at 16 seconds, pushing about 3ft, but that south wind is howling at 12 mph, blowing cross-on and just shredding the surface. The combined energy is moderate at 531, but with “poor surf conditions” marked, it’s a hard pass. Saturday and Sunday morning look even worse – smaller waist-high slop with that same ugly cross-on wind. Saturday afternoon has a bit of a break with the wind turning onshore at 6 mph, but the waves drop to around 2ft, and it’s only called marginal.
Monday the 14th brings a short-period 4ft swell from the west, but it’s only 8 seconds apart, and the south wind is back at 9 mph, cross-on. The channel is messy. Honestly, from Friday the 11th right through to Saturday the 19th, it’s a stretch of poor to marginal surf. There are a few afternoons where the wind dies to a light breeze, but the wave quality just isn’t there.
The real window opens on Saturday the 19th and Sunday the 20th of September. Sunday morning is the pick: light onshore wind, a 3ft SW swell with a long 18-second period, and the combined energy is pumping at 596. It’s still not perfect, but it’s the cleanest we’ll see. The swell direction from the SW is exactly what this harbor likes. It’s not big, but with that period, the sets will have some push. Watch out for the crowds, as this spot gets busy often.
After that, it fades. The 26th of September drops to barely 1ft of swell, with another long 19-second period, but it’s a fickle marginal wave. No swell over 5ft in the whole run, so it’s small wave territory all the way.
So, save your energy for the 19th and 20th – that’s your best shot for a few half-decent waves. The rest of the time, you’re best off doing something else.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Fri morning, min 21°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Mon morning, min 20°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 19 | W 10 | W 8 | SW 18 | SW 17 | SW 16 | SSW 20 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 471 | 360 | 309 | 211 | 164 | 160 | 89 | 130 | 196 | 160 | 150 | 190 | 161 | 127 | 113 | 386 | 347 | 402 | 284 | 246 | 242 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | on | glassy | cross-on | on | cross | cross-on | on | cross-on | cross-on | on | glassy | on | cross-on | glassy | cross-on | cross-on | cross |
High Tide | 10:01AM2.05m | 10:04PM2.06m | 10:29AM2.09m | 10:46PM1.88m | 10:56AM2.10m | 11:30PM1.68m | 11:24AM2.06m | 00:18AM1.49m | 11:53AM1.99m | 1:22AM1.32m | 12:27PM1.90m | 3:52AM1.22m | 1:13PM1.80m | ||||||||
Low Tide | 4:01PM0.53m | 4:14AM0.43m | 4:43PM0.49m | 4:40AM0.61m | 5:27PM0.50m | 5:04AM0.79m | 6:14PM0.56m | 5:24AM0.96m | 7:08PM0.64m | 5:37AM1.11m | 8:22PM0.72m | 5:04AM1.22m | 10:05PM0.73m | ||||||||
 | |  | | | | | | | | | | | | | | | | | | | |
 | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — |
 | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 22 | 23 | 23 | 22 | 23 | 23 | 21 | 23 | 23 | 21 | 22 | 22 | 20 | 22 | 22 | 20 | 23 | 23 | 21 |
Feels °C | 24 | 24 | 24 | 24 | 24 | 25 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 23 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | W 6 | W 7 | W 8 | W 10 | W 8 | W 8 | W 7 | W 9 | W 9 | W 8 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 |
| kJ | 471 | 360 | 309 | 211 | 164 | 36 | 82 | 94 | 196 | 160 | 89 | 33 | 57 | 58 | 32 | 386 | 347 | 402 | 284 | 246 | 242 |
Swell 2 Height (m) Direction Period (s) | W 6 | W 6 | W 6 | W 6 | W 6 | SW 14 | SW 14 | SW 13 | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | W 7 | S 13 | S 11 | S 12 | S 10 | W 5 |
| kJ | 29 | 17 | 10 | 25 | 24 | 160 | 89 | 87 | 85 | 108 | 150 | 190 | 161 | 122 | 88 | 14 | 82 | 55 | 97 | 54 | 12 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | SSW 10 | S 10 | S 10 | S 10 | S 9 | SW 19 | SW 19 | SW 19 | SW 13 | SW 13 | SW 12 | SW 12 | SSW 20 | SSW 18 | S 9 | W 6 | S 12 | SW 21 | SW 21 | S 12 |
| kJ | 22 | 20 | 16 | 29 | 29 | 14 | 58 | 130 | 129 | 44 | 40 | 38 | 37 | 127 | 113 | 15 | 11 | 27 | 160 | 162 | 69 |
Wind waves Height (m) Direction Period (s) | SSW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 5 | W 3 | — |
| kJ | 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 5 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 98 | 46 | 9 | 46 | 68 | 0 | 46 | 68 | 9 | 47 | 68 | 4 | 98 | 68 | 0 | 68 | 68 | 0 | 68 | 68 | 32 |
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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