Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 10 pm 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
12.5° C
1.2° 

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 Jul 2026:

  • Best quality surf: Tuesday 4 Aug, 5AM (local time) - 6ft (1.8m), 10s period, NW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 4 Aug, 2AM (local time) - 8ft (2.5m), 10s period, NW swell with 1,365 kJ wave energy.
  • Next surfable swell (1★+): Friday 31 Jul, 11PM (local time) - 2ft (0.6m), 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 Friday (Jul 31) at 11PM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.6m and 9s. Another secondary swell of 0.9m and 5s 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 2.5m 10s and forecast to arrive on Tuesday (Aug 04) 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 0.6m 14s period and expected on Friday (Jul 31) at 11PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Fri 31st Jul)2ft (0.6m) 14s
Best Surf 5AM (Tue 4th Aug)6ft (1.8m) 10s
Most Powerful 2AM (Tue 4th Aug)8ft (2.5m) 10s

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 coming up for Third Reef over the next couple of weeks.

Right off the bat, we’ve got a bit of a rough patch. The first few days are looking pretty average to poor. Friday the 31st and Saturday the 1st are a write-off with cross-onshore winds and choppy conditions. The swell is there, but the wind is just ruining it. Sunday the 2nd and Monday the 3rd see the swell building, with combined energy readings between 674 and 1089 (moderate to strong), but the wind stays cross-onshore, keeping the surface lumpy and messy. Not worth paddling out for.

The first real glimmer of hope comes on Tuesday the 4th of August. The morning is still a bit cross-onshore, but the afternoon is where it’s at. We get a glassy, clean surface with a 5ft swell from the NW, period of 9 seconds, and a combined energy of 514 (moderate). The water temp is about average for this time of year. This is your best window in the first week—clean, rideable waves, and not too crowded, though it can get a bit busy here sometimes. Wednesday the 5th also has a glassy afternoon with 4ft, but the energy drops a bit.

Then we hit another slump. From Thursday the 6th through to the 10th, the swell drops off and the winds are mostly cross-onshore or light, with poor to marginal conditions. There’s a glassy moment on Sunday the 9th, but the swell is only 3ft, so it’s pretty small.

Now, the standout for the whole forecast is on Tuesday the 13th of August. That afternoon, we’ve got a dead calm, glassy ocean. The swell is 3ft from the SSW with a very long period of 16 seconds—that’s proper groundswell. The combined energy is 786 (moderate), and these long-period waves will wrap in nicely, offering clean, lined-up sets. It’s a reef break, so it’ll handle that long period well. This is your best bet, but it’s over a week out, so keep an eye on it.

The 14th and 15th see a bit more size but with cross-onshore winds again, so the quality won’t be there.

Overall, the pick of the bunch is the 4th of August afternoon for the best combo of size and glass, and the 13th of August afternoon for the cleanest, most promising conditions even if a bit smaller. The rest of the time, you’re battling the wind or flat spells.

This is Rusty, signing off.

Short Range Forecast

Mostly dry. Warm (max 24°C on Sat afternoon, min 11°C on Thu night). Winds increasing (light winds from the NNE on Fri morning, fresh winds from the NW by Sun afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 23°C on Mon afternoon, min 12°C on Sun night). Wind will be generally light.

Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
1
0
0
1
0
0
3
0
3
3
1
3
2
1
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)
0.6
SW
15
0.9
SSW
14
0.8
SSW
14
0.7
SSW
14
1.2
NW
8
1.7
NW
6
1.8
NW
8
2.1
NW
8
2.3
NW
8
2.4
NW
10
2.2
NW
9
2.4
NW
9
2.5
NW
10
1.7
NW
9
1.6
NW
9
1.5
NW
9
1.5
NW
9
1.3
NW
9
1.1
NW
8
Wave Graph
Metric surfscale
Energy kJ
171
301
239
183
196
205
416
569
754
1070
833
1005
1365
468
421
359
359
281
153
Wind (km/h)
15
NNE
20
WNW
20
NW
15
NNE
20
NNW
30
NNW
20
N
25
NNW
30
NNW
20
NNE
20
NW
15
NNW
15
NNE
10
WNW
5
NW
5
N
10
S
5
WSW
0
E
Wind State
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross
cross-on
cross
cross-off
cross-on
cross
cross-off
cross-on
glassy
glassy
cross
glassy
glassy
High Tide
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
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
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
20
17
20
21
22
24
18
21
23
17
21
23
22
19
17
17
16
16
14
Feels °C
16
14
17
17
19
18
15
17
17
13
17
20
19
17
16
16
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