Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 4 pm 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
14.6°C
0.1° 

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 9 Sep 2026:

  • Best quality surf: Saturday 12 Sep, 5AM (local time) - 5ft (1.6m), 10s period, NW swell with cross-offshore winds.
  • Most powerful swell: Monday 14 Sep, 5AM (local time) - 7.5ft (2.3m), 8s period, NW swell with 711 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 8PM (local time) - 1.5ft (0.4m), 18s period with SW 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 Tuesday (Sep 08) at 8PM. The primary swell is predicted to be 0.4m and 18s period with a secondary swell of 0.7m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Third Reef in the next 16 days are 2.3m 8s and forecast to arrive on Monday (Sep 14) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 12s period and expected on Tuesday (Sep 08) at 8PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Tue 8th Sep)1.5ft (0.4m) 18s
Best Surf 5AM (Sat 12th Sep)5ft (1.6m) 10s
Most Powerful 5AM (Mon 14th Sep)7.5ft (2.3m) 8s

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


The Lowdown

Alright, let's talk turkey. I've been studying the long-range for the next couple of weeks, and it's going to be a test of patience. There are a couple of diamonds in the rough, but you're going to have to sift through a lot of sand to find them.

We have a big lull in the middle of the period where you can pretty much forget about it, so plan your life around that. The first window has a few decent options, but you have to be in the right place at the right time.

Here’s how it breaks down.

Tuesday, September 8th is weak. We're looking at a 0.7m SSW swell, but the cross-on wind puts a bad texture on it at Third Reef. The energy is weak at 241. Water temp is 60°F, so pretty standard for the season.

The morning of Wednesday the 9th is a no-go, but the afternoon is our first real taste of hope. The wind turns glassy from the WNW, the wave period jumps up to 19 seconds, and the energy bumps to 439. This is a proper groundswell, and on this reef, those long lines will have some push. Still small, but clean.

Thursday the 10th follows the same script. A bit rough in the morning, but the afternoon is the pick of the first run. Glassy conditions, a 1.0m SW swell with a 17-second period, and the energy is a solid 831. This is the one to circle.

Now for the bad news. Friday the 11th and Saturday the 12th are ruined by fresh onshore winds, turning any swell into a choppy, lumpy mess. Don't even think about it.

Sunday the 13th has another interesting afternoon. The wind goes glassy from the N, and the swell pushes to 1.4m, but the period drops to a short 9 seconds and the direction swings to the NW. It’s a windswell, so it will be less organized, but with clean conditions, there will be waves to ride.

Monday the 14th is a trap. A bigger, wind-blown NW swell with howling onshore winds will just be a blown-out mess. This starts a poor stretch that runs through the 16th. The swells are all onshore winds and the surf quality is just poor.

We get a tiny tease on the morning of Thursday the 17th – glassy winds and a long 21-second period, but the swell is tiny at just 0.4m. A perfect score with nothing to play. The next several days are more of the same, with small SW swells and onshore winds keeping the surface a mess.

So, the true standouts in this whole 16-day window are the afternoon sessions on Thursday the 10th and maybe Sunday the 13th. They're not big, but they will be clean and have some energy. For a spot that can handle a good swell, it’s a case of waiting for the wind to cooperate. It won't stay flat forever; this area has too much character for that.

Rusty out.

Short Range Forecast

Mostly dry. Warm (max 25°C on Wed morning, min 14°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 21°C on Fri afternoon, min 10°C on Fri night). Wind will be generally light.

Tue
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
2
2
1
3
2
0
0
3
1
0
3
1
3
4
0
0
2
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
0.5
SSW
14
0.5
SW
16
0.7
SW
19
0.7
SW
18
0.9
SW
17
1
SW
17
1
SW
16
1
SW
16
1
SW
15
0.9
SSW
15
0.9
SSW
14
0.9
SW
14
1.3
NW
10
1.1
NW
9
1.4
NW
9
2.1
NW
8
1.6
NW
8
2
NW
8
1.3
NW
8
Wave Graph
Metric surfscale
Energy kJ
168
105
132
368
312
424
553
496
477
459
372
367
301
341
216
314
608
358
480
210
Wind (km/h)
10
NW
15
NE
10
NW
5
WNW
5
NNE
10
WNW
5
NW
15
N
20
NW
30
NW
15
NNE
10
W
25
WNW
15
N
10
WNW
5
NNW
15
NNE
20
NW
20
NW
15
NNE
Wind State
cross-on
cross-off
cross-on
glassy
cross-off
cross-on
glassy
cross
cross-on
cross-on
cross-off
on
cross-on
cross-off
cross-on
glassy
cross-off
cross-on
cross-on
cross-off
High Tide
9:41PM2.01m
11:10AM1.66m
10:38PM2.00m
11:44AM1.75m
11:32PM1.95m
12:16PM1.83m
00:23AM1.85m
12:48PM1.87m
1:13AM1.73m
1:19PM1.88m
2:03AM1.60m
1:51PM1.86m
2:55AM1.46m
Low Tide
3:43PM0.76m
4:40AM-0.15m
4:40PM0.58m
5:22AM-0.09m
5:31PM0.41m
6:00AM0.02m
6:18PM0.27m
6:35AM0.17m
7:03PM0.17m
7:09AM0.35m
7:47PM0.13m
7:41AM0.53m
8:33PM0.13m
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:52
6:52
6:54
6:54
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:37
7:35
7:32
7:31
7:30
7:28
7:27
 mm
Temp °C
23
21
25
24
22
20
17
18
19
21
16
15
17
15
17
19
17
17
18
16
Feels °C
21
20
22
22
22
17
16
18
15
15
12
13
12
11
15
18
15
14
14
14
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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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