Surf Forecasts:
Oceanside Harbor surf forecast from 5 Sep 2026:
- Best quality surf: Sunday 6 Sep, 5PM (local time) - 6.5ft (2.0m), 14s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 5AM (local time) - 7ft (2.1m), 14s period, SSW swell with 1,748 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 8PM (local time) - 4ft (1.2m), 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 Friday (Sep 04) at 8PM. The primary swell is predicted to be 1.2m and 16s period with a secondary swell of 0.6m 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 2.1m 14s and forecast to arrive on Monday (Sep 07) at 5AM. 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 (Fri 4th Sep) | 4ft (1.2m) 16s |
| Best Surf | 5PM (Sun 6th Sep) | 6.5ft (2.0m) 14s |
| Most Powerful | 5AM (Mon 7th Sep) | 7ft (2.1m) 14s |
Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.
The Lowdown
Alright, Rusty here. Let's talk about what's coming up for Oceanside Harbor.
We're looking at a pretty slow start to the forecast window. The first real chance of a wave comes on Friday, September 4th, but it’s nothing to write home about. We’re seeing a modest 3ft SSW swell rolling in with a long 17-second period, but the energy is weak (680). The wind is light and onshore, so it’ll be a bit bumpy. The water is sitting at 75°, which is a whopping 7° warmer than usual for this time of year – that’s a very unusual and noticeable warm patch.
Saturday, September 5th, sees a bit more energy building through the day, with the combined energy hitting 1040 in the morning and 1335 by afternoon. The swell stays around 3ft to 4ft from the SSW, with that same long 16-second period. The wind is light, turning cross-onshore in the afternoon, so it’s going to be small and a little rippled. The surf is still marginal.
Sunday, September 6th, is the standout of the whole forecast. The swell picks up to 6ft in the morning and 7ft in the afternoon from the S, with a 14-second period. The wind turns cross-offshore from the NNW and N, cleaning things right up. The combined energy jumps to 1362 and 1556. This is clean, punchy surf for experienced surfers. The 7ft afternoon swell is pushing into the bigger range, so beginners should sit this one out. The wave direction is a good match for the harbor’s optimal W exposure, too. This is where you want to be in the water.
After that, things drop off quickly. Monday, September 7th, is a mess with cross-onshore winds and choppy conditions, despite the swell still being 7ft. By Tuesday the 8th, the swell is fading and the wind is still onshore, making for poor quality. From Wednesday the 9th onwards, we’re looking at a long stretch of poor to marginal surf. The swell drops below 3ft, the energy dips into the 100-500 range, and the wind is either onshore or cross-onshore. There’s a gap of several days where there’s really nothing to recommend. The odd small pulse of 2ft to 3ft shows up around the 19th of September, but with weak energy and light cross-onshore breezes, it’s still not worth getting excited about.
So, for the whole 16-day window, Sunday the 6th is your best bet. Get out there for the afternoon session. The rest is a waiting game.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun afternoon. Warm (max 26°C on Sun afternoon, min 18°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Mon morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | S 14 | S 14 | S 14 | S 13 | SSW 14 | SSW 13 | SSW 12 | SSW 13 | SSW 13 | SSW 11 | SSW 10 | SSW 10 | SW 17 | SW 17 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 587 | 559 | 620 | 512 | 666 | 957 | 1298 | 1505 | 838 | 1581 | 1609 | 1036 | 938 | 838 | 504 | 245 | 278 | 419 | 560 | 508 | 483 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | on | cross-on | cross | cross-off | cross-off | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | on | cross-on | glassy |
High Tide | 3:13PM1.98m | 7:12AM1.38m | 4:46PM2.04m | 7:41AM1.51m | 6:01PM2.14m | 8:09AM1.64m | 7:00PM2.24m | 8:37AM1.76m | 7:51PM2.30m | 9:05AM1.88m | 8:37PM2.28m | 9:33AM1.98m | 9:21PM2.20m | ||||||||
Low Tide | 11:37PM0.45m | 10:01AM1.32m | 00:40AM0.30m | 11:49AM1.23m | 1:27AM0.18m | 12:55PM1.08m | 2:07AM0.11m | 1:47PM0.90m | 2:43AM0.10m | 2:34PM0.74m | 3:16AM0.16m | 3:18PM0.61m | 3:46AM0.28m | ||||||||
 |  |  | | |  |  |  |  | | | | | | | | | | | | | |
 | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — |
 | — | 7:10 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:04 | — | — | 7:02 | — |
mm | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 23 | 24 | 23 | 24 | 26 | 25 | 26 | 26 | 24 | 25 | 26 | 23 | 25 | 26 | 25 | 24 | 25 | 23 |
Feels °C | 20 | 20 | 21 | 22 | 23 | 23 | 22 | 26 | 26 | 26 | 24 | 24 | 24 | 24 | 22 | 24 | 24 | 26 | 25 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SSW 16 | S 14 | S 13 | S 14 | S 14 | S 14 | S 13 | SSW 14 | SSW 13 | SSW 12 | SSW 13 | SSW 13 | SSW 11 | SSW 10 | SSW 10 | SW 10 | SW 17 | SW 16 | SW 16 |
| kJ | 587 | 559 | 620 | 462 | 599 | 957 | 1298 | 1505 | 838 | 1581 | 1609 | 1036 | 938 | 838 | 504 | 245 | 267 | 134 | 560 | 508 | 483 |
Swell 2 Height (m) Direction Period (s) | SSW 11 | S 14 | S 14 | SSW 16 | SSW 16 | WSW 11 | SW 20 | W 11 | SSW 15 | — | — | W 10 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 17 | SW 9 | SW 9 | SW 10 |
| kJ | 78 | 148 | 253 | 512 | 666 | 45 | 15 | 36 | 596 | — | — | 8 | 80 | 81 | 130 | 214 | 278 | 419 | 97 | 62 | 148 |
Swell 3 Height (m) Direction Period (s) | W 6 | SSW 11 | SW 11 | SW 12 | S 10 | W 13 | — | W 12 | — | — | — | — | SW 21 | SW 21 | W 10 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | WSW 12 | SSW 11 |
| kJ | 15 | 78 | 75 | 66 | 70 | 3 | — | 3 | — | — | — | — | 18 | 18 | 2 | 96 | 29 | 81 | 47 | 53 | 39 |
Wind waves Height (m) Direction Period (s) | — | W 5 | — | — | — | — | W 10 | NW 4 | W 11 | W 10 | WNW 4 | WNW 4 | — | W 3 | W 4 | W 4 | W 4 | WNW 4 | W 4 | WNW 3 | WNW 4 |
| kJ | — | 8 | — | — | — | — | 49 | 12 | 36 | 17 | 10 | 9 | — | 5 | 5 | 3 | 6 | 6 | 3 | 3 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 68 | 68 | 0 | 68 | 68 | 15 | 23 | 0 | 19 | 32 | 68 | 17 | 68 | 68 | 4 | 32 | 32 | 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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