Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 4 am 28 Aug 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
14.8°C
0.4° 

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


Third Reef surf forecast from 28 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 5AM (local time) - 4ft (1.2m), 16s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Saturday 29 Aug, 11AM (local time) - 4ft (1.2m), 18s period, SSW swell with 887 kJ wave energy.
  • Next surfable swell (1★+): Friday 28 Aug, 11PM (local time) - 2.5ft (0.8m), 19s period with SSW swell.

Best Forecast Surf Conditions for Third Reef this week:

The surf forecast for Third Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 28) at 11PM. The primary swell is predicted to be 0.8m and 19s period with a secondary swell of 0.5m and 13s. Another secondary swell of 1.1m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Third Reef in the next 16 days are 1.2m 18s and forecast to arrive on Saturday (Aug 29) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 11s period and expected on Thursday (Sep 03) at 5PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Fri 28th Aug)2.5ft (0.8m) 19s
Best Surf 5AM (Sun 30th Aug)4ft (1.2m) 16s
Most Powerful11AM (Sat 29th Aug)4ft (1.2m) 18s

Table - best surf conditions forecast for Third Reef over the next 16 days.


The Lowdown

G’day, Rusty here. Let’s have a look at what’s comin’ for Third Reef (United States). To be straight with ya, this stretch is lookin’ pretty ordinary over the next sixteen days, with no real standout sessions to get fired up about. The water temp’s sittin’ around 59°F, which is about average for this time of year, so nothin’ unusual there.

We start off this Friday morning, August 28, with some clouds and a light WNW breeze blowin’ cross-on at 9 mph. Swell’s comin’ from the SSW at 3 feet, with a long period of 16 seconds, but the combined energy is moderate at 525. It’s a groundswell, but that cross-onshore wind’s got it choppy and messy. The waves are small, the tide’s questionable – honestly, it’s a bit of a dud. Afternoon’s no better, same story with poor conditions.

Saturday, August 29, the wind picks up to 19 mph from the NW, fresh and lumpy. Swell height’s 4 feet from the SSW, period 18 seconds, combined energy jumps to 1070 (strong), but that cross-onshore wind just ruins it. Sunday, August 30, is more of the same – clear skies, but cross-onshore WNW at 9 mph, swell 4 feet, period 16 seconds, energy 1394. Still marginal, still choppy. The pattern holds through Monday, August 31, with lighter S winds at 6 mph and a cross shore, swell drops to 3 feet, period 14 seconds, energy 598. Slight improvement in wind, but the surf’s still weak and marginal.

The rest of the first week into early September is a real grind. Tuesday, September 1, has light winds but swell only 2 to 3 feet, and the period drops to 10 seconds – weak energy around 286 to 314. Wednesday and Thursday are similar, with a bit of a bump on Thursday afternoon September 3 – swell hits 5 feet from the NW, period 11 seconds, energy 985. That’s the biggest push so far, but the wind’s light cross-on from the WSW at 3 mph, and it’s still labelled marginal, so nothin’ to write home about.

Friday, September 4, has a bit of potential – swell 3 feet from the SSW, period 17 seconds, energy up to 1127 in the afternoon, with light onshore WSW wind at 3 mph. Again, it’s marginal and the wind’s not helpin’ clean it up. Saturday, September 5, and Sunday, September 6, drift along with 3 feet swell, 14-15 second periods, and light winds, but the combined energy sits around 500-782. Still no clean conditions.

There’s a gap from Monday, September 7 through to Wednesday, September 9, where the surf stays small and messy – swell under 3 feet, periods dropping to 7 or 8 seconds, and cross-onshore winds. The energy’s low (236 to 564). This area’s just not firin’.

Then we get a spike late in the second week. Thursday morning, September 10, sees a 5 feet NW swell with a 12-second period, combined energy of 1498 (strong), but it’s cross-onshore from the NW at 9 mph – so lumpy and poor. Afternoon’s even windier at 16 mph. That swell’s got some size, but the quality’s wrecked. Friday and Saturday, September 11-12, the swell stays around 3 to 6 feet with long periods (13-16 seconds) and energy up to 1475, but the wind’s fresh and cross-onshore again – nothin’ clean.

Look, if you’re keen, the best chance is probably Thursday afternoon, September 4, with that 3 feet SSW groundswell and light wind, or maybe Thursday morning, September 10, if you can handle lumpy 5 feet waves. Neither’s a true standout. The NW swells have long periods, which could work alright on Third Reef (it’s a reef break after all), but the wind never lines up right for clean conditions. Crowds are possible here sometimes, but with this forecast, it might be quiet.

Overall, it’s a bleak outlook – long stretches of poor to marginal surf with cross-onshore winds. If you’re really itchin’, keep an eye on those few days with lighter breeze, but don’t expect much. The setup here is more interesting for kite surfing than paddling, given the strong winds and lumpy seas.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Sat afternoon, min 11°C on Sat night). Winds decreasing (fresh winds from the NW on Sat afternoon, light winds from the NE by Sun night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 16°C on Mon morning, min 12°C on Mon night). Wind will be generally light.

Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
1
0
0
2
1
1
3
2
1
2
1
0
2
1
0
2
2
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)
0.8
SSW
16
0.7
SW
16
0.7
SSW
19
1.2
SSW
18
1.2
SSW
18
1.1
SSW
16
1.2
SSW
16
1.1
SSW
16
1.9
NW
8
1
SSW
14
0.9
SSW
14
0.8
SSW
14
0.7
SSW
13
0.7
SSW
13
0.7
SSW
13
0.6
SW
18
0.5
SW
16
0.6
SSW
16
0.8
SSW
19
1.5
NW
11
0.9
SSW
18
Wave Graph
Metric surfscale
Energy kJ
343
274
315
887
877
627
733
546
458
400
325
210
154
160
154
249
130
177
450
515
553
Wind (km/h)
15
NW
15
NW
15
NNE
20
NW
30
NW
15
N
15
WNW
15
NW
10
N
10
S
10
WNW
5
NNE
10
SSW
15
WNW
10
NNE
10
W
10
WNW
10
ENE
10
S
5
WSW
5
ENE
Wind State
cross-on
cross-on
cross-off
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
on
glassy
cross-on
cross-on
cross-off
on
on
cross-off
cross
cross-on
glassy
High Tide
12:37PM1.64m
00:11AM1.84m
1:02PM1.71m
00:55AM1.76m
1:28PM1.78m
1:42AM1.66m
1:56PM1.84m
2:34AM1.53m
2:28PM1.89m
3:33AM1.39m
3:05PM1.92m
4:47AM1.26m
3:51PM1.93m
Low Tide
6:14PM0.55m
6:41AM0.11m
6:54PM0.44m
7:10AM0.23m
7:37PM0.33m
7:39AM0.38m
8:23PM0.24m
8:09AM0.54m
9:17PM0.17m
8:43AM0.71m
10:19PM0.12m
9:24AM0.86m
11:29PM0.07m
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:39
6:39
6:41
6:41
6:43
6:43
6:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:53
7:52
7:51
7:49
7:47
7:45
7:45
 mm
Temp °C
16
16
16
18
21
17
16
16
16
16
15
13
14
15
15
16
16
15
15
16
16
Feels °C
14
14
15
15
15
13
13
14
15
15
14
13
13
14
15
15
14
14
14
16
16
  • 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 Third Reef Surf forecast

The above surf forecast table for Third Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Third Reef can be found by selecting the local surf guide option on the grey menu. Our Third Reef 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 (Third Reef) 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 Third Reef 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.

Third Reef is 85 km (53 miles) from Eureka. If you plan a vacation in Humboldt County, look for hotels and other accommodation in Eureka. Eureka has rooms for a wide range of budgets as well as car hire and transport links.

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