Oceanside Harbor Surf Break

Lat Long: 33.26° N 117.44° W

Oceanside Harbor Surf Forecast and Surf Report

Issued: 10 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Oceanside Harbor sea temperature is
22.1° C
2.2° 

Oceanside Harbor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Oceanside Harbor surf forecast from 21 Aug 2026:

  • Best quality surf: Thursday 27 Aug, 8PM (local time) - 5ft (1.5m), 13s period, SSW swell with glassy winds.
  • Most powerful swell: Thursday 27 Aug, 2AM (local time) - 5ft (1.6m), 14s period, SSW swell with 953 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 5AM (local time) - 2.5ft (0.7m), 14s 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 (Aug 21) at 5AM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 0.4m 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 1.6m 14s and forecast to arrive on Thursday (Aug 27) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Fri 21st Aug)2.5ft (0.7m) 14s
Best Surf 8PM (Thu 27th Aug)5ft (1.5m) 13s
Most Powerful 2AM (Thu 27th Aug)5ft (1.6m) 14s

Table - best surf conditions forecast for Oceanside Harbor over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s have a proper look at the surf window for the next couple of weeks.

Overall, it’s a slow start. We’ve got a run of days where the surf is just gutless and messy. The swell is small and the wind is mostly cross-onshore, chopping up what little push there is. It’s not gonna be worth paddling out for anything more than a quick splash to keep the rust off. This flat and weak spell looks set to last for the best part of a week, maybe even a bit longer. It’s a classic case of the ocean needing a breather, and we’re going to have to be patient. There are no real standouts in this whole run until we get to that last day of the forecast, and even that one, you've gotta take with a pinch of salt this far out.

Looking at Oceanside Harbor first, yeah the break is exposed and it picks up the west in the optimum direction, but the wind is mostly working against us. That spot is going to be a mess of small, cross-onshore dribble. The mornings on the 21st and 22nd are showing tiny waves, around `2ft` to `2ft`, with light wind but it’s still cross-onshore, and there’s barely enough energy to push you around. The onshore breeze kicks in a touch more in the afternoons, making it poor. This goes on for days, with the swell height barely moving and the energy staying weak, in the low hundreds.

Then we get a little pulse around the 26th and 27th. The swell jumps a bit, up to `5ft` from the south, and the energy is building to a moderate `948` and `1043`. But the conditions are still marginal, with that cross-onshore wind taking the shine off it. It’s still not great. The period is around 13 seconds, which is okay, but nothing special in these conditions.

It stays pretty average right through to the end of the month and into September. The swell comes and goes, sometimes down to `2ft`, sometimes up to `4ft`, but the wind just never cleans up. We're having to scrap for anything. The energy is moderate throughout, mostly in the `300` to `800` range, but the model keeps saying the surf is poor or marginal. It’s a frustrating stretch.

Now, the one glimmer of hope is the `4th of September`. The morning shows a big change. The wind swings around to the WNW at a light `3 mph`, and it's glassy. That’s what we want to hear. The swell is still small, around `3ft` from the SSW, but with a period of 17 seconds, it’s a proper groundswell. The energy is moderate at `435`, but the glassy conditions will make it look and feel ten times better. This is the standout of the window, but it’s a long way off, so you’d call it promising but far from certain. It’s a chance for some clean, lined-up waves at the Harbor, with the SSW swell. It’s not big, but on a glassy morning like that, it could be fun.

The afternoon of the 4th and into the 5th looks like the swell starts to fill in more, getting up to `6ft` from the south with a stronger `1386` energy, but the wind is due to swing back around to a cross-onshore, so it might get messy again. That morning of the 4th is the one to put a little star next to, it’s our best bet. But don’t go booking the time off work just yet, a lot can change in ten days. The rest of the window is a write-off, so if you’re desperate for a wave before then, bring the log and enjoy the small stuff. You win some, you lose some.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Sun morning, min 22°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Tue morning, min 22°C on Tue night). Wind will be generally light.

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
1
1
0
0
2
1
0
1
0
0
2
0
1
1
1
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
SSW
14
0.7
SSW
13
0.6
SSW
13
0.5
SSW
13
0.4
SW
18
0.6
SSW
15
0.7
SSW
14
0.5
SW
19
0.5
SW
18
0.6
SW
18
0.6
SW
18
0.6
SW
17
0.7
SW
17
0.6
SW
16
0.6
SW
16
1.2
S
14
1.4
S
13
1.3
S
13
1.6
SSW
14
Wave Graph
Metric surfscale
Energy kJ
175
156
137
98
92
167
218
177
155
213
197
179
273
216
171
526
683
563
953
Wind (km/h)
5
SSW
10
WSW
10
WSW
0
WSW
10
WSW
15
W
0
WSW
10
WSW
15
W
10
WNW
10
W
15
W
5
NW
15
W
10
SW
10
SSE
10
SSW
10
SSW
5
SE
Wind State
glassy
on
cross-on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
cross
cross-on
cross-on
glassy
cross-on
on
cross-on
cross-on
on
cross
High Tide
8:25AM1.36m
5:06PM1.83m
8:27AM1.43m
6:08PM1.91m
8:41AM1.49m
6:56PM2.01m
8:58AM1.55m
7:35PM2.10m
9:16AM1.61m
8:10PM2.17m
9:35AM1.68m
8:44PM2.20m
Low Tide
00:19AM0.65m
10:09AM1.35m
1:10AM0.54m
11:57AM1.32m
1:47AM0.43m
12:51PM1.24m
2:18AM0.34m
1:31PM1.14m
2:46AM0.27m
2:06PM1.04m
3:12AM0.24m
2:40PM0.94m
3:36AM0.24m
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:16
6:18
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:29
7:27
7:25
7:24
7:23
7:22
 mm
Temp °C
22
24
24
23
25
25
24
26
26
23
26
26
24
27
27
24
25
25
23
Feels °C
24
26
24
26
26
25
26
26
25
24
26
25
25
26
26
25
26
26
25
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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