Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 4 am 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
14.8°C
0.3° 

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 29 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 5AM (local time) - 3.5ft (1.1m), 16s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Saturday 29 Aug, 2PM (local time) - 4ft (1.2m), 18s period, SSW swell with 877 kJ wave energy.
  • Next surfable swell (1★+): Sunday 30 Aug, 5AM (local time) - 3.5ft (1.1m), 16s 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 Sunday (Aug 30) at 5AM. The primary swell is predicted to be 1.1m and 16s period with a secondary swell of 1.3m and 7s. Another secondary swell of 2.0m and 7s 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 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 13s period and expected on Friday (Sep 04) at 11AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sun 30th Aug)3.5ft (1.1m) 16s
Best Surf 5AM (Sun 30th Aug)3.5ft (1.1m) 16s
Most Powerful 2PM (Sat 29th Aug)4ft (1.2m) 18s

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


The Lowdown

Alright folks, Rusty here. Let's look at the surf ahead for Third Reef.

The next sixteen days at Third Reef are a bit of a mixed bag. We’ve got some solid long-period energy rolling in at times, but the wind is gonna be the main character for much of the first week, keeping things messy. The real highlights are tucked away in the middle and later parts of the forecast, offering some clean windows.

The run starts off rough. Saturday, August 29th, is a write-off. We’ve got a 4ft SSW swell with a pumping 18-second period, so there’s plenty of energy (combined energy 972 in the morning, 1023 in the afternoon), but a strong cross-onshore wind is just trashing the surface. It's choppy and lumpy, not worth paddling out. Sunday the 30th isn’t much better – the swell drops a touch and the wind stays cross-onshore, keeping conditions poor.

Monday the 31st and Tuesday September 1st see the swell slowly fade. The wind eases off, but it’s still cross or cross-onshore. Tuesday afternoon on September 1st gives a brief moment of relief with a glassy surface on a tiny 2ft SSW swell, but it’s pretty weak (271 combined energy). Wednesday the 2nd is a write-off again with messy winds.

Now, here’s where it gets interesting. For the first standout, look at Thursday morning, September 3rd. The swell bumps up to 3ft from the SSW with a very long 19-second period. The wind goes glassy from the WNW. This is the kind of setup that makes Third Reef worth the drive. The energy is moderate (806), but with that period and clean conditions, the waves should have real shape and power. This is the best call for the first week.

The afternoon of the 3rd gets ruined by a fresh cross-onshore breeze, and the whole weekend of September 5th and 6th looks like more of the same chop and wind.

We then hit a gap of a few days with nothing recommended until the next real highlight. That comes on Wednesday afternoon, September 9th. The swell jumps to a solid 5ft from the NW with a 12-second period. This is a bigger swell, getting into expert territory at that size, but the key here is the wind: it goes glassy from the WNW. The energy is strong (968). If you’re an experienced surfer, this is the session to circle on the calendar.

The good conditions keep rolling. The morning of Thursday, September 10th is glassy again, with a 3ft SSW, 17-second swell (883 energy). Very clean, very lined up. Friday afternoon the 11th is also glassy, with a similar 3ft SSW, 16-second swell.

The final standout is Saturday morning, September 12th. It’s 3ft from the SW, 14-second period, with a light cross-offshore wind from the SSE. The comment says "clean," and that’s exactly what it looks like (728 energy). A nice, clean option to close out the forecast window with some quality waves.

So, to sum it up: the first week is a write-off until the glassy morning of September 3rd. The best waves on offer are the bigger, glassy sessions on September 9th afternoon and the clean morning of September 12th. Don't fight the wind; wait for those windows.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 20°C on Sat afternoon, min 11°C on Sat night). Winds decreasing (fresh winds from the NW on Sat afternoon, calm by Mon night).

Days 4-6 Weather Summary

Some drizzle, heaviest during Wed night. Very mild (max 18°C on Thu afternoon, min 11°C on Thu night). Wind will be generally light.

Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
2
1
0
4
2
1
2
1
2
2
1
0
2
3
0
2
0
0
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
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
0.8
SSW
13
0.7
SSW
13
0.7
SSW
13
0.6
SW
18
0.8
WNW
9
0.6
SW
16
0.9
SW
19
1.3
WNW
10
0.9
SSW
18
0.9
SSW
18
1
SSW
17
1
SSW
16
Wave Graph
Metric surfscale
Energy kJ
887
877
627
733
546
447
400
325
210
198
154
151
249
94
214
513
361
553
547
569
505
Wind (km/h)
20
NW
30
NNW
15
N
15
WNW
15
NW
10
NNE
10
SSW
5
SW
5
ENE
5
S
5
WSW
10
E
15
S
10
S
10
SE
5
WNW
20
NW
15
NNE
20
NW
30
NNW
15
N
Wind State
cross-on
cross-on
cross
cross-on
cross-on
cross-off
cross-on
cross-on
off
cross
glassy
off
cross
cross
cross-off
glassy
cross-on
cross-off
cross-on
cross-on
cross
High Tide
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
6:22AM1.19m
4:51PM1.92m
Low Tide
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
10:20AM0.98m
00:44AM0.02m
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
part cloud
clear
part cloud
rain showers
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:39
6:41
6:41
6:43
6:43
6:45
6:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:52
7:51
7:49
7:47
7:45
7:45
7:43
 mm
1
Temp °C
18
20
17
15
16
16
15
15
14
15
16
15
16
16
15
16
18
17
17
19
15
Feels °C
14
14
13
12
14
15
14
13
15
14
16
15
14
14
15
16
15
13
13
12
12
  • 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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