Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 4 am 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
14.2° C
0.7° 

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 30 Jul 2026:

  • Best quality surf: Tuesday 4 Aug, 8AM (local time) - 10ft (3.0m), 10s period, NW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 4 Aug, 5AM (local time) - 10ft (3.0m), 10s period, NW swell with 1,721 kJ wave energy.
  • Next surfable swell (1★+): Friday 31 Jul, 8AM (local time) - 2.5ft (0.7m), 14s 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 Friday (Jul 31) at 8AM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 0.5m and 8s. Another secondary swell of 0.8m and 6s 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 3.0m 10s and forecast to arrive on Tuesday (Aug 04) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Thursday (Jul 30) at 11PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 31st Jul)2.5ft (0.7m) 14s
Best Surf 8AM (Tue 4th Aug)10ft (3.0m) 10s
Most Powerful 5AM (Tue 4th Aug)10ft (3.0m) 10s

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


The Lowdown

Alright, this is Rusty, and I’ve been staring at the charts for our stretch of coast. The only break on the menu is Third Reef, and to be honest, it’s a bit of a mixed bag for the next two weeks.

The pattern starts with a long stretch of frustration. From Thursday the 30th of July right through to Monday the 3rd of August, the wind is a constant cross-on mess, with speeds hitting 12 to 19 mph. The swell is there, ranging from 3 ft to 8 ft, and the energy is moderate to strong (around 320 to 1027), but it’s all blown out and choppy. It’s the kind of surf you’d drive past and keep on driving. The water is sitting at 58°F, which is about normal for this time of year, nothing to write home about.

Then we get a little glimmer of hope. On Tuesday the 4th of August, the afternoon sees the wind drop to a glassy 3 mph from the NW. The swell is a solid 6 ft from the NW with a period of 9 seconds, and the energy is still moderate (630). This is the first real standout. The conditions are clean, and the waves should have some shape. With an intermediate reef break like Third Reef, that’s a good window for a session. It’s not a monster, but for this area, it’s the best on offer for a while. Keep in mind, it can get crowded here sometimes.

The next few days are marginal, with onshore or light cross-on winds and similar swell sizes. The wind stays light, which is better than a gale, but the tide or consistency will be a bit of a question mark. The period for the north-west swells hangs around 8 to 10 seconds, which is decent, but not groundswell territory.

The next real standout doesn’t come until Monday the 10th of August. That afternoon, we get a glassy 6 ft NW swell with an 8-second period and strong energy (897). It’s late in the forecast, so it’s promising but less certain. Again, Third Reef (reef) with clean conditions should produce some fun, rippable waves.

Finally, on Wednesday the 12th of August, the afternoon looks glassy again, but the swell switches to a long-period (18 seconds) SSW swell at just 3 ft. That long period is a groundswell, and while it’s clean, it’s small. That long period might make it break a bit straight at the reef, but it’s a point break setup, so it could still offer some nice lines if you’re patient. The energy is strong (951) for the size, which is interesting.

From Thursday the 13th of August onward, it’s back to cross-on winds and messy conditions, with the swell dropping back to 3 ft to 3 ft from the SSW. The two-week run fizzles out.

So, to sum it up: the first week is mostly a write-off. Your best bets are the Tuesday the 4th of August afternoon, and then the Monday the 10th of August afternoon. Both offer glassy windows and manageable swell. The 12th of August is a curiosity for the long-period fans, but it’s small. The rest? Save your energy.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 24°C on Sat afternoon, min 11°C on Thu night). Mainly fresh winds.

Days 4-6 Weather Summary

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

Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
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
1
0
0
0
0
0
2
0
0
2
1
3
2
2
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SSW
16
1.1
SSW
16
0.6
SW
15
0.9
SSW
14
0.8
SSW
14
0.7
SSW
14
1.2
NW
8
1.6
NW
6
1.8
NW
8
2.1
NW
8
2.3
NW
8
2.1
NW
9
2.1
NW
9
2.4
NW
9
2.1
NW
10
1.8
NW
9
1.8
NW
9
1.6
NW
9
1.7
NW
9
1.7
NW
9
2.3
NW
9
Wave Graph
Metric surfscale
Energy kJ
419
568
171
301
239
183
196
169
359
555
719
731
747
942
817
519
537
410
488
488
931
Wind (km/h)
20
NW
25
NNW
15
NNE
20
NW
20
NW
15
NNE
25
NW
30
NNW
20
N
25
NW
30
NNW
20
NNE
20
NW
25
NNW
15
NNE
10
NW
5
NW
0
NE
5
WSW
5
W
5
N
Wind State
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
glassy
glassy
cross-on
on
cross
High Tide
1:33PM1.50m
00:19AM1.88m
2:00PM1.55m
1:00AM1.80m
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
Low Tide
6:30PM0.83m
7:19AM-0.09m
7:12PM0.77m
7:48AM0.00m
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
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:13
6:13
6:15
6:16
6:16
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:31
8:30
8:30
8:29
8:28
8:27
8:24
 mm
Temp °C
18
23
21
17
19
20
22
24
18
20
23
18
20
25
20
18
17
18
15
15
14
Feels °C
14
17
16
14
16
17
18
19
14
16
17
14
16
20
16
17
17
17
14
14
15
  • 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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