Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 4 am 01 Aug 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
12.0° C
1.8° 

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 1 Aug 2026:

  • Best quality surf: Monday 3 Aug, 11PM (local time) - 8ft (2.5m), 10s period, NW swell with cross-offshore winds.
  • Most powerful swell: Monday 3 Aug, 2AM (local time) - 10ft (3.0m), 10s period, NW swell with 1,819 kJ wave energy.
  • Next surfable swell (1★+): Monday 3 Aug, 8AM (local time) - 7ft (2.1m), 10s period with NW 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 03) at 8AM. The primary swell is predicted to be 2.1m and 10s period with a secondary swell of 0.4m and 13s. 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 3.0m 10s and forecast to arrive on Monday (Aug 03) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 13s period and expected on Saturday (Aug 01) at 2PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Mon 3rd Aug)7ft (2.1m) 10s
Best Surf11PM (Mon 3rd Aug)8ft (2.5m) 10s
Most Powerful 2AM (Mon 3rd Aug)10ft (3.0m) 10s

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


The Lowdown

Alright, folks, Rusty here. Let’s talk Third Reef. This forecast is a slow burner, so don’t rush out the door just yet. The first few days are a mess with that cross-onshore wind and lumpy surf. The water is 54°, which is a good bit colder than normal for this time of year, so you’ll need a thick wetsuit.

The first real chance comes on Monday, August 3rd in the afternoon. The wind dies right off, glassy as a mirror, and the swell is 7ft from the NW with a 9-second period. The energy is moderate (783). It’s a reef break, so that period is good for shape. That’s your first decent option for the experienced surfer.

We get a calm spell through the middle of the week. Nothing worth paddling out for until Friday, August 7th in the afternoon. Another glassy window, 5ft NW swell, moderate energy (563). Clean, small, but fun.

Now, the real standout is Sunday, August 9th in the afternoon. The swell is 8ft from the NW, period at 9 seconds, and the wind is glassy. The energy jumps to a strong 1236. This is the kind of day you call in sick for. The forecasters say it’s excellent for experienced surfers, and I’m with them. That’s the best of the whole 16 days.

Monday, August 10th afternoon is another ripper: glassy, 8ft NW swell, and strong energy (1408). Another excellent call for the experienced crew. Then Tuesday, August 11th afternoon, glassy, 7ft, strong energy (956). The conditions are holding up.

Then the swell switches to a long-period south-southwest groundswell from the 13th. The period is 16 to 18 seconds, which is very long. That’s a lot of energy, but it can be a bit straight at the reef. The highlight there is Saturday, August 15th in the morning: 4ft from the SSW, 17-second period, glassy, and strong energy (1223). That’s a beautiful, patient session.

So, the top pick is the 9th afternoon, with the 10th afternoon right behind it. Don’t rush the first week, but the second week has some magic in it.

- Rusty

Short Range Forecast

Mostly dry. Warm (max 25°C on Sat afternoon, min 12°C on Sat night). Winds decreasing (fresh winds from the NW on Sun afternoon, calm by Mon afternoon).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Tue morning, min 14°C on Wed night). Wind will be generally light.

Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
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
1
0
0
3
2
3
3
2
2
2
2
1
3
2
2
3
1
3
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
NW
8
1.7
NW
6
1.9
NW
8
2.1
NW
8
2.3
NW
9
3
NW
10
3
NW
10
2.1
NW
9
2.5
NW
10
1.6
NW
9
1.6
NW
9
1.5
NW
9
1.5
NW
9
1.6
NW
9
2
NW
9
1.6
NW
9
1.6
NW
9
1.6
NW
9
1.5
NW
9
1.6
NW
9
2.1
NW
9
Wave Graph
Metric surfscale
Energy kJ
196
212
470
582
846
1819
1460
699
1129
421
412
367
351
376
612
393
430
423
359
370
703
Wind (km/h)
20
NNW
30
NNW
20
N
25
NW
30
NNW
15
NNE
15
NW
5
NW
15
N
5
WNW
5
NW
5
NNE
5
S
5
WNW
5
NW
5
WSW
10
WNW
5
NW
10
WNW
5
WNW
10
N
Wind State
cross-on
cross-on
cross
cross-on
cross-on
cross-off
cross-on
glassy
cross
cross-on
cross-on
glassy
glassy
cross-on
glassy
on
cross-on
glassy
on
glassy
cross
High Tide
2:26PM1.61m
1:44AM1.69m
2:52PM1.67m
2:32AM1.55m
3:21PM1.74m
3:29AM1.40m
3:54PM1.81m
4:39AM1.25m
4:34PM1.87m
6:09AM1.15m
5:24PM1.94m
7:52AM1.15m
6:25PM2.00m
Low Tide
7:57PM0.69m
8:17AM0.14m
8:45PM0.60m
8:47AM0.30m
9:41PM0.49m
9:20AM0.47m
10:44PM0.37m
9:57AM0.64m
11:53PM0.24m
10:43AM0.80m
1:04AM0.09m
11:43AM0.93m
2:13AM-0.06m
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:15
6:16
6:16
6:18
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:30
8:29
8:28
8:27
8:24
8:23
8:22
 mm
Temp °C
22
25
17
21
23
18
18
18
18
18
16
17
16
16
16
15
16
15
15
17
16
Feels °C
19
19
14
17
17
14
16
18
17
17
15
16
15
16
16
15
15
16
15
17
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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