Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 10 am 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
14.1°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 31 Aug 2026:

  • Best quality surf: Friday 4 Sep, 2AM (local time) - 3ft (0.9m), 18s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Friday 4 Sep, 8AM (local time) - 3.5ft (1.0m), 18s period, SSW swell with 659 kJ wave energy.
  • Next surfable swell (1★+): Monday 31 Aug, 8PM (local time) - 3ft (0.9m), 14s 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 Monday (Aug 31) at 8PM. The primary swell is predicted to be 0.9m and 14s 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 1.0m 18s and forecast to arrive on Friday (Sep 04) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 12s period and expected on Thursday (Sep 03) at 8PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Mon 31st Aug)3ft (0.9m) 14s
Best Surf 2AM (Fri 4th Sep)3ft (0.9m) 18s
Most Powerful 8AM (Fri 4th Sep)3.5ft (1.0m) 18s

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 the table for the next 16 days. It's a bit of a mixed bag, with a lot of marginal stuff and a few longer gaps where the surf just isn't happening. The water temp is sitting at 57°F, which is basically bang on average for this time of year, so grab a decent wetsuit and you'll be fine.

The first real action kicks off at Third Reef on Monday, 31st August. We've got a 3ft SSW swell rolling in, with a period of 14 seconds, giving us a moderate wave energy of 506. The wind's a light cross-onshore from the WSW at 6 mph, which is a bit of a bummer, but it's light enough to keep things rideable. The early part of the week is really just a warm-up, though – the surf is there, but it's nothing to write home about.

Things start to look a bit more promising on Thursday, 3rd September. The morning session sees a 3ft SW swell with a very long period of 19 seconds, cranking the energy up to 865. That's the kind of groundswell that brings some real power. The wind is light cross from the south at 3 mph, so it's nearly glassy. That afternoon, the swell jumps to 5ft from the WNW, but the period drops to 10 seconds and the wind goes cross-onshore, so it's a bit of a trade-off.

The standout, and I mean the real standout, is Sunday, 13th September. The afternoon session at Third Reef is looking perfect. You've got a 5ft NW swell, period of 11 seconds, and the energy is still decent at 640. But the best part? The wind is glassy. Dead flat. From the west at a measly 3 mph. That's a major positive and means the waves will be buttery smooth. This is the one to circle on your calendar. It's a bit of a wait, but trust me, it'll be worth it.

Now, for the rest of the run, there are some solid gaps. After the 31st of August, the first week is a bit up and down, but the second week really drops off. We have a big dead zone from the 4th of September right through to the 10th, with mostly poor conditions and strong winds. The 10th of September morning sees a bigger 6ft NW swell, but the wind is a moderate cross-onshore, making it choppy and messy. That's more of a kite-surfing scenario than a clean paddle session.

Friday, 11th September, brings a bit of a reprieve with a 3ft SSW swell and a 16-second period, but the energy is still high at 1242. The wind is light onshore, so it's not great, but it's not terrible either. The real action then picks up again on the 12th and 13th, leading into that Sunday glass-off.

So, to sum it up: the first week is a bit of a slog, but if you're patient, the 13th of September afternoon is the clear winner. The water's average, the swell's solid, and the wind is perfect. Get out there.

Rusty

Short Range Forecast

Moderate rain (total 12mm), heaviest on Wed night. Very mild (max 16°C on Tue afternoon, min 13°C on Mon morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Fri afternoon, min 11°C on Fri night). Winds decreasing (fresh winds from the NW on Fri afternoon, light winds from the NNE by Sat night).

Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
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
2
1
1
2
1
1
3
2
2
4
2
0
4
1
0
3
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
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
1.4
W
8
0.9
SW
19
1.5
WNW
10
0.9
SSW
18
1
SSW
18
1
SSW
18
1
SSW
16
1.1
SSW
16
1.1
SSW
16
1.1
SSW
15
1
SSW
15
1
SSW
15
0.8
SSW
14
Wave Graph
Metric surfscale
Energy kJ
400
325
210
198
154
154
252
99
227
513
455
559
659
637
512
627
596
519
411
405
264
Wind (km/h)
10
WSW
10
W
5
ESE
10
S
10
S
10
E
15
S
20
SSE
10
ESE
5
S
10
NW
10
NNE
15
WNW
30
NW
15
NNE
10
WNW
15
WNW
10
NE
10
WNW
10
NW
5
NE
Wind State
cross-on
on
glassy
cross
cross
off
cross
cross-off
cross-off
cross
cross-on
cross-off
cross-on
cross-on
cross-off
on
cross-on
cross-off
on
cross-on
cross-off
High Tide
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
8:01AM1.23m
6:05PM1.91m
9:09AM1.32m
7:25PM1.94m
Low Tide
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
11:41AM1.05m
1:56AM-0.06m
1:13PM1.04m
3:00AM-0.12m
clear
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
cloud
heavy rain
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:43
6:43
6:45
6:46
6:47
6:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:49
7:47
7:45
7:45
7:43
7:40
7:39
 mm
12
Temp °C
14
15
15
15
16
15
16
15
15
16
16
15
16
18
16
16
16
15
16
16
16
Feels °C
13
14
15
14
15
14
14
12
14
16
16
15
13
12
13
14
14
15
14
15
14
  • 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