Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 10 am 05 Sep 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 6 Sep 2026:

  • Best quality surf: Saturday 5 Sep, 8PM (local time) - 3.5ft (1.1m), 15s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Saturday 5 Sep, 11PM (local time) - 4ft (1.2m), 15s period, SSW swell with 670 kJ wave energy.
  • Next surfable swell (1★+): Saturday 5 Sep, 8PM (local time) - 3.5ft (1.1m), 15s 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 Saturday (Sep 05) at 8PM. The primary swell is predicted to be 1.1m and 15s period with a secondary swell of 1.1m and 9s. Another secondary swell of 1.5m and 9s 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 15s and forecast to arrive on Saturday (Sep 05) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 12s period and expected on Wednesday (Sep 09) at 5AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sat 5th Sep)3.5ft (1.1m) 15s
Best Surf 8PM (Sat 5th Sep)3.5ft (1.1m) 15s
Most Powerful11PM (Sat 5th Sep)4ft (1.2m) 15s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on offer at Third Reef over the next couple of weeks.

Right off the bat, we’ve got a bit of a wait. The first few days are pretty flat and messy. The water temp is sitting at 59°F at the start, which is about normal for this time of year – nothing to complain about there.

We’ve got a long period groundswell rolling in from the SSW on Saturday the 5th, with a wave height of 4ft and a period of 16 seconds, carrying moderate energy (947). But the wind is on it or cross-on, and the conditions are marginal. Sunday the 6th looks like a write-off with fresh cross-onshore winds up to 19 mph making it lumpy. Through Monday and Tuesday the 7th and 8th, the swell drops, and it’s not really worth paddling out.

Now, Wednesday afternoon the 9th is where things start to get interesting. The wind goes glassy, the swell is 2ft from the SW with a very long period of 19 seconds, and the energy is moderate (445). That’s a clean, glassy session for the late afternoon if you’re keen.

The real standout is shaping up for Thursday afternoon the 10th. We’ve got a 3ft SW groundswell with a 17-second period, glassy conditions, and the energy is building to a solid 824. That’s going to be clean, lined-up waves – a proper session. But remember, this is a reef break, and with a long period like that, it’ll be a bit more focused and less forgiving at a beach setup. Still, it’s the best of the first week.

Friday the 11th gets blown out again, and Saturday the 12th sees a shift to a shorter period NW windswell (9 seconds) at 5ft. The energy is still there (699), but it’s cross-on and choppy. Sunday the 13th has a 5ft NW swell with an 8-second period (753 energy), but it’s going to be a bit of a lumpy mess. That size is getting into intermediate territory, but the quality isn’t there.

The second week is pretty quiet overall. Monday the 14th has a glassy morning with a tiny 1ft SW swell (17-second period), but it’s barely a ripple. Tuesday the 15th through Thursday the 17th is all small, cross-on, and marginal.

But hold on – the best is saved for the very end. On Sunday the 20th of September, we’ve got a cracking setup. The morning has a 3ft SW swell with a clean cross-offshore wind from the SSE. The energy is strong at 752. Then in the afternoon, it jumps to a 5ft WNW swell with a 10-second period, and the energy rockets to 1099. That’s strong wave energy, and with a light cross-offshore breeze, it’s going to be clean and powerful. That afternoon session is for experienced surfers, though – over 5ft and a bit of punch. Still, it’s the clear standout of the whole forecast.

Overall, it’s a slow start, but the 10th and that 20th of September are the ones to circle. Crowds are possible at Third Reef, but with the conditions looking clean on those days, it’ll be worth the paddle.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Sun afternoon, min 12°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Wed night, min 16°C on Tue morning). Wind will be generally light.

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
3
0
0
2
1
1
2
1
0
2
1
2
2
1
3
3
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SSW
16
1.1
SSW
16
1.1
SSW
15
1
SSW
15
1
SSW
15
0.8
SSW
14
0.8
SSW
14
0.9
SSW
14
1.6
NW
7
1
NW
8
0.6
SSW
13
0.5
SW
18
0.5
SW
16
0.7
SW
19
0.7
SW
18
0.9
SW
17
1
SW
17
1.4
SSW
11
1
SW
16
1
SW
15
0.9
SSW
15
Wave Graph
Metric surfscale
Energy kJ
620
589
519
411
405
236
236
293
234
118
118
166
132
368
312
419
553
441
477
465
377
Wind (km/h)
5
W
15
WNW
10
NNE
15
WNW
30
NW
15
NNE
10
WNW
10
NW
15
NNE
10
WNW
5
NNW
10
NE
10
WSW
5
NNW
10
NE
10
WNW
5
WNW
10
NNE
15
NW
30
NNW
15
N
Wind State
on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
on
cross
cross-off
cross-on
glassy
cross-off
cross-on
glassy
cross-off
cross-on
cross-on
cross
High Tide
8:01AM1.23m
6:05PM1.91m
9:09AM1.32m
7:25PM1.94m
9:55AM1.43m
8:38PM1.98m
10:34AM1.54m
9:41PM2.01m
11:10AM1.66m
10:38PM2.00m
11:44AM1.75m
11:32PM1.95m
12:16PM1.83m
00:23AM1.85m
Low Tide
11:41AM1.05m
1:56AM-0.06m
1:13PM1.04m
3:00AM-0.12m
2:35PM0.93m
3:53AM-0.16m
3:43PM0.76m
4:40AM-0.15m
4:40PM0.58m
5:22AM-0.09m
5:31PM0.41m
6:00AM0.02m
6:18PM0.27m
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:47
6:48
6:48
6:50
6:50
6:52
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:40
7:39
7:37
7:37
7:35
7:32
7:31
 mm
Temp °C
16
16
15
17
19
16
18
17
18
19
19
20
24
25
26
24
23
23
22
24
19
Feels °C
15
14
14
14
14
13
16
16
16
17
18
18
22
23
24
21
21
22
19
19
16
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Third Reef:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Third Reef surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest